first commit

backend/app.js

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+const express = require('express');
+const app = express();
+const port = 3001;
+
+const grpc = require('@grpc/grpc-js');
+const protoLoader = require('@grpc/proto-loader');
+const fs = require('fs');
+
+const path = require('path');
+
+// const { Buffer } = 'buffer';
+
+//// gRPC INITIALIZATION
+
+// Due to updated ECDSA generated tls.cert we need to let gprc know that
+// we need to use that cipher suite otherwise there will be a handhsake
+// error when we communicate with the lnd rpc server.
+process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
+
+// We need to give the proto loader some extra options, otherwise the code won't
+// fully work with lnd.
+const loaderOptions = {
+  keepCase: true,
+  longs: String,
+  enums: String,
+  defaults: true,
+  oneofs: true,
+};
+const packageDefinition = protoLoader.loadSync(
+  './proto/lighting.proto',
+  loaderOptions
+);
+
+// Load lnd macaroon
+let m = fs.readFileSync(
+  'C:\\Users\\tserg\\.polar\\networks\\1\\volumes\\lnd\\bob\\data\\chain\\bitcoin\\regtest\\admin.macaroon'
+);
+let macaroon = m.toString('hex');
+
+// Build meta data credentials
+let metadata = new grpc.Metadata();
+metadata.add('macaroon', macaroon);
+let macaroonCreds = grpc.credentials.createFromMetadataGenerator(
+  (_args, callback) => {
+    callback(null, metadata);
+  }
+);
+// Combine credentials
+let lndCert = fs.readFileSync(
+  'C:\\Users\\tserg\\.polar\\networks\\1\\volumes\\lnd\\bob\\tls.cert'
+);
+let sslCreds = grpc.credentials.createSsl(lndCert);
+let credentials = grpc.credentials.combineChannelCredentials(
+  sslCreds,
+  macaroonCreds
+);
+
+// Create client
+let lnrpcDescriptor = grpc.loadPackageDefinition(packageDefinition);
+let lnrpc = lnrpcDescriptor.lnrpc;
+let client = new lnrpc.Lightning('127.0.0.1:10002', credentials);
+
+//// ROUTES
+
+app.get('/', (req, res) => {
+  res.send('Kachow!');
+});
+
+app.get('/getinfo', function (req, res) {
+  client.getInfo({}, function (err, response) {
+    if (err) {
+      console.log('Error: ' + err);
+    }
+    res.json(response);
+  });
+});
+
+app.get('/generate-invoice/:source/:price', function (req, res) {
+  let request = {
+    value: req.params['price'],
+    memo: req.params['source'],
+  };
+  client.addInvoice(request, function (err, response) {
+    res.json(response);
+  });
+});
+
+app.get('/check-invoice/:payment_hash', function (req, res) {
+  let request = {
+    r_hash_str: req.params['payment_hash'],
+  };
+  client.lookupInvoice(request, function (err, response) {
+    if (err) {
+      console.log('Error: ' + err);
+    }
+    res.json(response);
+  });
+});
+
+app.get('/file/:source', function (req, res, next) {
+  console.log('/file/:source');
+  var options = {
+    dotfiles: 'deny',
+    headers: {
+      'x-timestamp': Date.now(),
+      'x-sent': true,
+    },
+  };
+
+  var fileName = path.join(path.join(__dirname, 'static'));
+  res.download(
+    path.join(__dirname, 'static', req.params['source']),
+    req.params['source'],
+    options,
+    function (err) {
+      if (err) {
+        next(err);
+      } else {
+        console.log('Sent:', fileName);
+      }
+    }
+  );
+});
+
+app.listen(port, () => {
+  console.log(`Example app listening at http://localhost:${port}`);
+});

client/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

client/README.md

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+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
+
+The page will reload when you make changes.\
+You may also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can't go back!**
+
+If you aren't satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.
+
+You don't have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting)
+
+### Analyzing the Bundle Size
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size)
+
+### Making a Progressive Web App
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app)
+
+### Advanced Configuration
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration)
+
+### Deployment
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment)
+
+### `npm run build` fails to minify
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

client/package.json

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+{
+  "name": "client",
+  "version": "0.1.0",
+  "private": true,
+  "proxy": "http://localhost:3001",
+  "dependencies": {
+    "@testing-library/jest-dom": "^5.16.4",
+    "@testing-library/react": "^13.3.0",
+    "@testing-library/user-event": "^13.5.0",
+    "buffer": "^6.0.3",
+    "react": "^18.1.0",
+    "react-dom": "^18.1.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

client/public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

client/public/manifest.json

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+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

client/public/robots.txt

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+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

client/src/App.css

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+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

client/src/App.js

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+import React, { useState } from 'react';
+import './App.css';
+var Buffer = require('buffer/').Buffer;
+
+const media = [
+  {
+    name: 'Succulent (photo)',
+    price: 200,
+    source: '01.png',
+    invoice: '',
+    paymentHash: '',
+    buyButton: false,
+    checkButton: true,
+    fileDownloadUrl: '',
+  },
+  {
+    name: 'Melbourne (photo)',
+    price: 200,
+    source: '02.png',
+    invoice: '',
+    paymentHash: '',
+    buyButton: false,
+    checkButton: true,
+    fileDownloadUrl: '',
+  },
+  {
+    name: 'Madayaka (photo)',
+    price: 1000,
+    source: '03.png',
+    invoice: '',
+    paymentHash: '',
+    buyButton: false,
+    checkButton: true,
+    fileDownloadUrl: '',
+  },
+];
+
+function Media(props) {
+  const [mediaList, setMedia] = useState(media);
+
+  function generateInvoice(source, price) {
+    fetch(`/generate-invoice/${source}/${price}`)
+      .then((res) => res.json())
+      .then((data) => {
+        const updateMedia = mediaList.map((m) => {
+          if (m.source === source) {
+            const updatedMedia = {
+              ...m,
+              invoice: data.payment_request,
+              paymentHash: Buffer.from(data.r_hash).toString('hex'),
+              buyButton: true,
+              checkButton: false,
+            };
+            return updatedMedia;
+          }
+          return m;
+        });
+        setMedia(updateMedia);
+      });
+  }
+
+  function checkInvoice(paymentHash) {
+    fetch(`/check-invoice/${paymentHash}`)
+      .then((res) => res.json())
+      .then((data) => {
+        if (data.settled === true) {
+          getContent(data.memo).then((res) => {
+            const updateMedia = mediaList.map((m) => {
+              if (m.source === data.memo) {
+                return {
+                  ...m,
+                  invoice: 'THANK YOU',
+                  checkButton: true,
+                  fileDownloadUrl: res,
+                };
+              }
+              return m;
+            });
+            setMedia(updateMedia);
+          });
+        } else {
+          alert('Payment not yet received');
+        }
+      });
+  }
+
+  async function getContent(source) {
+    return await fetch(`/file/${source}`)
+      .then((res) => res.blob())
+      .then((blob) => URL.createObjectURL(blob));
+  }
+
+  return (
+    <div>
+      {mediaList.map((m) => {
+        return (
+          <div
+            key={m.source}
+            style={{
+              border: '3px solid gray',
+              borderRadius: '5px',
+              margin: '10px',
+              padding: '10px',
+              width: '350px',
+              display: 'inline-block',
+              height: '550px',
+              whiteSpace: 'nowrap',
+            }}
+          >
+            <div style={{ margin: 'auto', width: '80%' }}>
+              <p>{m.name}</p>
+              <p>Price: {m.price} sats</p>
+              <img src={'assets/' + m.source} height='220px' alt={m.name} />
+              <br />
+              <button
+                disabled={m.buyButton}
+                style={{ padding: '10px', margin: '10px' }}
+                type='button'
+                onClick={() => {
+                  generateInvoice(m.source, m.price);
+                }}
+              >
+                Buy
+              </button>
+              <button
+                disabled={m.checkButton}
+                style={{ padding: '10px', margin: '10px' }}
+                type='button'
+                onClick={() => {
+                  checkInvoice(m.paymentHash);
+                }}
+              >
+                Check Payment
+              </button>
+              <br></br>
+              <textarea
+                style={{ resize: 'none' }}
+                rows='9'
+                cols='32'
+                value={m.invoice}
+                readOnly
+              ></textarea>
+              <br></br>
+              <a
+                style={{
+                  visibility:
+                    !m.checkButton || !m.buyButton ? 'hidden' : 'visible',
+                }}
+                href={m.fileDownloadUrl}
+                rel='noreferrer'
+                target='_blank'
+              >
+                View
+              </a>
+              <br></br>
+              <a
+                style={{
+                  visibility:
+                    !m.checkButton || !m.buyButton ? 'hidden' : 'visible',
+                }}
+                href={m.fileDownloadUrl}
+                rel='noreferrer'
+                target='_blank'
+                download
+              >
+                Download
+              </a>
+            </div>
+          </div>
+        );
+      })}
+    </div>
+  );
+}
+
+class App extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      alias: '',
+    };
+  }
+
+  componentDidMount() {
+    const getInfo = async () => {
+      const response = await fetch('/getinfo');
+      const { alias } = await response.json();
+      this.setState({
+        alias,
+      });
+    };
+    getInfo();
+  }
+
+  render() {
+    return (
+      <div>
+        <p>{this.state.alias}</p>
+        <Media />
+      </div>
+    );
+  }
+}
+
+export default App;

client/src/App.test.js

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+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

client/src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

client/src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

client/src/logo.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

client/src/reportWebVitals.js

@@ -0,0 +1,13 @@
+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

client/src/setupTests.js

@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';

node_modules/.bin/mime

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../mime/cli.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../mime/cli.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/mime.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\mime\cli.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/mime.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../mime/cli.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../mime/cli.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/pbjs

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../protobufjs/bin/pbjs" "$@"
+  ret=$?
+else 
+  node  "$basedir/../protobufjs/bin/pbjs" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/pbjs.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\protobufjs\bin\pbjs" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/pbjs.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../protobufjs/bin/pbjs" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../protobufjs/bin/pbjs" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/pbts

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../protobufjs/bin/pbts" "$@"
+  ret=$?
+else 
+  node  "$basedir/../protobufjs/bin/pbts" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/pbts.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\protobufjs\bin\pbts" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/pbts.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../protobufjs/bin/pbts" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../protobufjs/bin/pbts" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/proto-loader-gen-types

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../@grpc/proto-loader/build/bin/proto-loader-gen-types.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../@grpc/proto-loader/build/bin/proto-loader-gen-types.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/proto-loader-gen-types.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\@grpc\proto-loader\build\bin\proto-loader-gen-types.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/proto-loader-gen-types.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../@grpc/proto-loader/build/bin/proto-loader-gen-types.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../@grpc/proto-loader/build/bin/proto-loader-gen-types.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/@grpc/grpc-js/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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node_modules/@grpc/grpc-js/README.md

@@ -0,0 +1,73 @@
+# Pure JavaScript gRPC Client
+
+## Installation
+
+Node 12 is recommended. The exact set of compatible Node versions can be found in the `engines` field of the `package.json` file.
+
+```sh
+npm install @grpc/grpc-js
+```
+
+## Documentation
+
+Documentation specifically for the `@grpc/grpc-js` package is currently not available. However, [documentation is available for the `grpc` package](https://grpc.github.io/grpc/node/grpc.html), and the two packages contain mostly the same interface. There are a few notable differences, however, and these differences are noted in the "Migrating from grpc" section below.
+
+## Features
+
+- Clients
+- Automatic reconnection
+- Servers
+- Streaming
+- Metadata
+- Partial compression support: clients can decompress response messages
+- Pick first and round robin load balancing policies
+- Client Interceptors
+- Connection Keepalives
+- HTTP Connect support (proxies)
+
+If you need a feature from the `grpc` package that is not provided by the `@grpc/grpc-js`, please file a feature request with that information.
+
+This library does not directly handle `.proto` files. To use `.proto` files with this library we recommend using the `@grpc/proto-loader` package.
+
+## Migrating from [`grpc`](https://www.npmjs.com/package/grpc)
+
+`@grpc/grpc-js` is almost a drop-in replacement for `grpc`, but you may need to make a few code changes to use it:
+
+- If you are currently loading `.proto` files using `grpc.load`, that function is not available in this library. You should instead load your `.proto` files using `@grpc/proto-loader` and load the resulting package definition objects into `@grpc/grpc-js` using `grpc.loadPackageDefinition`.
+- If you are currently loading packages generated by `grpc-tools`, you should instead generate your files using the `generate_package_definition` option in `grpc-tools`, then load the object exported by the generated file into `@grpc/grpc-js` using `grpc.loadPackageDefinition`.
+- If you have a server and you are using `Server#bind` to bind ports, you will need to use `Server#bindAsync` instead.
+- If you are using any channel options supported in `grpc` but not supported in `@grpc/grpc-js`, you may need to adjust your code to handle the different behavior. Refer to [the list of supported options](#supported-channel-options) below.
+- Refer to the [detailed package comparison](https://github.com/grpc/grpc-node/blob/master/PACKAGE-COMPARISON.md) for more details on the differences between `grpc` and `@grpc/grpc-js`.
+
+## Supported Channel Options
+Many channel arguments supported in `grpc` are not supported in `@grpc/grpc-js`. The channel arguments supported by `@grpc/grpc-js` are:
+  - `grpc.ssl_target_name_override`
+  - `grpc.primary_user_agent`
+  - `grpc.secondary_user_agent`
+  - `grpc.default_authority`
+  - `grpc.keepalive_time_ms`
+  - `grpc.keepalive_timeout_ms`
+  - `grpc.keepalive_permit_without_calls`
+  - `grpc.service_config`
+  - `grpc.max_concurrent_streams`
+  - `grpc.initial_reconnect_backoff_ms`
+  - `grpc.max_reconnect_backoff_ms`
+  - `grpc.use_local_subchannel_pool`
+  - `grpc.max_send_message_length`
+  - `grpc.max_receive_message_length`
+  - `grpc.enable_http_proxy`
+  - `grpc.default_compression_algorithm`
+  - `grpc.enable_channelz`
+  - `grpc.dns_min_time_between_resolutions_ms`
+  - `grpc-node.max_session_memory`
+  - `channelOverride`
+  - `channelFactoryOverride`
+
+## Some Notes on API Guarantees
+
+The public API of this library follows semantic versioning, with some caveats:
+
+- Some methods are prefixed with an underscore. These methods are internal and should not be considered part of the public API.
+- The class `Call` is only exposed due to limitations of TypeScript. It should not be considered part of the public API.
+- In general, any API that is exposed by this library but is not exposed by the `grpc` library is likely an error and should not be considered part of the public API.
+- The `grpc.experimental` namespace contains APIs that have not stabilized. Any API in that namespace may break in any minor version update.

node_modules/@grpc/grpc-js/build/src/admin.d.ts

@@ -0,0 +1,11 @@
+import { ServiceDefinition } from "./make-client";
+import { Server, UntypedServiceImplementation } from "./server";
+interface GetServiceDefinition {
+    (): ServiceDefinition;
+}
+interface GetHandlers {
+    (): UntypedServiceImplementation;
+}
+export declare function registerAdminService(getServiceDefinition: GetServiceDefinition, getHandlers: GetHandlers): void;
+export declare function addAdminServicesToServer(server: Server): void;
+export {};

node_modules/@grpc/grpc-js/build/src/admin.js

@@ -0,0 +1,31 @@
+"use strict";
+/*
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.addAdminServicesToServer = exports.registerAdminService = void 0;
+const registeredAdminServices = [];
+function registerAdminService(getServiceDefinition, getHandlers) {
+    registeredAdminServices.push({ getServiceDefinition, getHandlers });
+}
+exports.registerAdminService = registerAdminService;
+function addAdminServicesToServer(server) {
+    for (const { getServiceDefinition, getHandlers } of registeredAdminServices) {
+        server.addService(getServiceDefinition(), getHandlers());
+    }
+}
+exports.addAdminServicesToServer = addAdminServicesToServer;
+//# sourceMappingURL=admin.js.map

node_modules/@grpc/grpc-js/build/src/admin.js.map

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node_modules/@grpc/grpc-js/build/src/backoff-timeout.d.ts

@@ -0,0 +1,80 @@
+export interface BackoffOptions {
+    initialDelay?: number;
+    multiplier?: number;
+    jitter?: number;
+    maxDelay?: number;
+}
+export declare class BackoffTimeout {
+    private callback;
+    /**
+     * The delay time at the start, and after each reset.
+     */
+    private readonly initialDelay;
+    /**
+     * The exponential backoff multiplier.
+     */
+    private readonly multiplier;
+    /**
+     * The maximum delay time
+     */
+    private readonly maxDelay;
+    /**
+     * The maximum fraction by which the delay time can randomly vary after
+     * applying the multiplier.
+     */
+    private readonly jitter;
+    /**
+     * The delay time for the next time the timer runs.
+     */
+    private nextDelay;
+    /**
+     * The handle of the underlying timer. If running is false, this value refers
+     * to an object representing a timer that has ended, but it can still be
+     * interacted with without error.
+     */
+    private timerId;
+    /**
+     * Indicates whether the timer is currently running.
+     */
+    private running;
+    /**
+     * Indicates whether the timer should keep the Node process running if no
+     * other async operation is doing so.
+     */
+    private hasRef;
+    /**
+     * The time that the currently running timer was started. Only valid if
+     * running is true.
+     */
+    private startTime;
+    constructor(callback: () => void, options?: BackoffOptions);
+    private runTimer;
+    /**
+     * Call the callback after the current amount of delay time
+     */
+    runOnce(): void;
+    /**
+     * Stop the timer. The callback will not be called until `runOnce` is called
+     * again.
+     */
+    stop(): void;
+    /**
+     * Reset the delay time to its initial value. If the timer is still running,
+     * retroactively apply that reset to the current timer.
+     */
+    reset(): void;
+    /**
+     * Check whether the timer is currently running.
+     */
+    isRunning(): boolean;
+    /**
+     * Set that while the timer is running, it should keep the Node process
+     * running.
+     */
+    ref(): void;
+    /**
+     * Set that while the timer is running, it should not keep the Node process
+     * running.
+     */
+    unref(): void;
+}

node_modules/@grpc/grpc-js/build/src/backoff-timeout.js

@@ -0,0 +1,160 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BackoffTimeout = void 0;
+const INITIAL_BACKOFF_MS = 1000;
+const BACKOFF_MULTIPLIER = 1.6;
+const MAX_BACKOFF_MS = 120000;
+const BACKOFF_JITTER = 0.2;
+/**
+ * Get a number uniformly at random in the range [min, max)
+ * @param min
+ * @param max
+ */
+function uniformRandom(min, max) {
+    return Math.random() * (max - min) + min;
+}
+class BackoffTimeout {
+    constructor(callback, options) {
+        this.callback = callback;
+        /**
+         * The delay time at the start, and after each reset.
+         */
+        this.initialDelay = INITIAL_BACKOFF_MS;
+        /**
+         * The exponential backoff multiplier.
+         */
+        this.multiplier = BACKOFF_MULTIPLIER;
+        /**
+         * The maximum delay time
+         */
+        this.maxDelay = MAX_BACKOFF_MS;
+        /**
+         * The maximum fraction by which the delay time can randomly vary after
+         * applying the multiplier.
+         */
+        this.jitter = BACKOFF_JITTER;
+        /**
+         * Indicates whether the timer is currently running.
+         */
+        this.running = false;
+        /**
+         * Indicates whether the timer should keep the Node process running if no
+         * other async operation is doing so.
+         */
+        this.hasRef = true;
+        /**
+         * The time that the currently running timer was started. Only valid if
+         * running is true.
+         */
+        this.startTime = new Date();
+        if (options) {
+            if (options.initialDelay) {
+                this.initialDelay = options.initialDelay;
+            }
+            if (options.multiplier) {
+                this.multiplier = options.multiplier;
+            }
+            if (options.jitter) {
+                this.jitter = options.jitter;
+            }
+            if (options.maxDelay) {
+                this.maxDelay = options.maxDelay;
+            }
+        }
+        this.nextDelay = this.initialDelay;
+        this.timerId = setTimeout(() => { }, 0);
+        clearTimeout(this.timerId);
+    }
+    runTimer(delay) {
+        var _a, _b;
+        clearTimeout(this.timerId);
+        this.timerId = setTimeout(() => {
+            this.callback();
+            this.running = false;
+        }, delay);
+        if (!this.hasRef) {
+            (_b = (_a = this.timerId).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
+        }
+    }
+    /**
+     * Call the callback after the current amount of delay time
+     */
+    runOnce() {
+        this.running = true;
+        this.startTime = new Date();
+        this.runTimer(this.nextDelay);
+        const nextBackoff = Math.min(this.nextDelay * this.multiplier, this.maxDelay);
+        const jitterMagnitude = nextBackoff * this.jitter;
+        this.nextDelay =
+            nextBackoff + uniformRandom(-jitterMagnitude, jitterMagnitude);
+    }
+    /**
+     * Stop the timer. The callback will not be called until `runOnce` is called
+     * again.
+     */
+    stop() {
+        clearTimeout(this.timerId);
+        this.running = false;
+    }
+    /**
+     * Reset the delay time to its initial value. If the timer is still running,
+     * retroactively apply that reset to the current timer.
+     */
+    reset() {
+        this.nextDelay = this.initialDelay;
+        if (this.running) {
+            const now = new Date();
+            const newEndTime = this.startTime;
+            newEndTime.setMilliseconds(newEndTime.getMilliseconds() + this.nextDelay);
+            clearTimeout(this.timerId);
+            if (now < newEndTime) {
+                this.runTimer(newEndTime.getTime() - now.getTime());
+            }
+            else {
+                this.running = false;
+            }
+        }
+    }
+    /**
+     * Check whether the timer is currently running.
+     */
+    isRunning() {
+        return this.running;
+    }
+    /**
+     * Set that while the timer is running, it should keep the Node process
+     * running.
+     */
+    ref() {
+        var _a, _b;
+        this.hasRef = true;
+        (_b = (_a = this.timerId).ref) === null || _b === void 0 ? void 0 : _b.call(_a);
+    }
+    /**
+     * Set that while the timer is running, it should not keep the Node process
+     * running.
+     */
+    unref() {
+        var _a, _b;
+        this.hasRef = false;
+        (_b = (_a = this.timerId).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
+    }
+}
+exports.BackoffTimeout = BackoffTimeout;
+//# sourceMappingURL=backoff-timeout.js.map

node_modules/@grpc/grpc-js/build/src/backoff-timeout.js.map

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node_modules/@grpc/grpc-js/build/src/call-credentials-filter.d.ts

@@ -0,0 +1,16 @@
+import { Call } from './call-stream';
+import { Channel } from './channel';
+import { BaseFilter, Filter, FilterFactory } from './filter';
+import { Metadata } from './metadata';
+export declare class CallCredentialsFilter extends BaseFilter implements Filter {
+    private readonly channel;
+    private readonly stream;
+    private serviceUrl;
+    constructor(channel: Channel, stream: Call);
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+}
+export declare class CallCredentialsFilterFactory implements FilterFactory<CallCredentialsFilter> {
+    private readonly channel;
+    constructor(channel: Channel);
+    createFilter(callStream: Call): CallCredentialsFilter;
+}

node_modules/@grpc/grpc-js/build/src/call-credentials-filter.js

@@ -0,0 +1,75 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CallCredentialsFilterFactory = exports.CallCredentialsFilter = void 0;
+const filter_1 = require("./filter");
+const constants_1 = require("./constants");
+const uri_parser_1 = require("./uri-parser");
+class CallCredentialsFilter extends filter_1.BaseFilter {
+    constructor(channel, stream) {
+        var _a, _b;
+        super();
+        this.channel = channel;
+        this.stream = stream;
+        this.channel = channel;
+        this.stream = stream;
+        const splitPath = stream.getMethod().split('/');
+        let serviceName = '';
+        /* The standard path format is "/{serviceName}/{methodName}", so if we split
+         * by '/', the first item should be empty and the second should be the
+         * service name */
+        if (splitPath.length >= 2) {
+            serviceName = splitPath[1];
+        }
+        const hostname = (_b = (_a = uri_parser_1.splitHostPort(stream.getHost())) === null || _a === void 0 ? void 0 : _a.host) !== null && _b !== void 0 ? _b : 'localhost';
+        /* Currently, call credentials are only allowed on HTTPS connections, so we
+         * can assume that the scheme is "https" */
+        this.serviceUrl = `https://${hostname}/${serviceName}`;
+    }
+    async sendMetadata(metadata) {
+        const credentials = this.stream.getCredentials();
+        const credsMetadata = credentials.generateMetadata({
+            service_url: this.serviceUrl,
+        });
+        const resultMetadata = await metadata;
+        try {
+            resultMetadata.merge(await credsMetadata);
+        }
+        catch (error) {
+            this.stream.cancelWithStatus(constants_1.Status.UNAUTHENTICATED, `Failed to retrieve auth metadata with error: ${error.message}`);
+            return Promise.reject('Failed to retrieve auth metadata');
+        }
+        if (resultMetadata.get('authorization').length > 1) {
+            this.stream.cancelWithStatus(constants_1.Status.INTERNAL, '"authorization" metadata cannot have multiple values');
+            return Promise.reject('"authorization" metadata cannot have multiple values');
+        }
+        return resultMetadata;
+    }
+}
+exports.CallCredentialsFilter = CallCredentialsFilter;
+class CallCredentialsFilterFactory {
+    constructor(channel) {
+        this.channel = channel;
+        this.channel = channel;
+    }
+    createFilter(callStream) {
+        return new CallCredentialsFilter(this.channel, callStream);
+    }
+}
+exports.CallCredentialsFilterFactory = CallCredentialsFilterFactory;
+//# sourceMappingURL=call-credentials-filter.js.map

node_modules/@grpc/grpc-js/build/src/call-credentials-filter.js.map

@@ -0,0 +1 @@
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node_modules/@grpc/grpc-js/build/src/call-credentials.d.ts

@@ -0,0 +1,56 @@
+import { Metadata } from './metadata';
+export interface CallMetadataOptions {
+    service_url: string;
+}
+export declare type CallMetadataGenerator = (options: CallMetadataOptions, cb: (err: Error | null, metadata?: Metadata) => void) => void;
+export interface OldOAuth2Client {
+    getRequestMetadata: (url: string, callback: (err: Error | null, headers?: {
+        [index: string]: string;
+    }) => void) => void;
+}
+export interface CurrentOAuth2Client {
+    getRequestHeaders: (url?: string) => Promise<{
+        [index: string]: string;
+    }>;
+}
+export declare type OAuth2Client = OldOAuth2Client | CurrentOAuth2Client;
+/**
+ * A class that represents a generic method of adding authentication-related
+ * metadata on a per-request basis.
+ */
+export declare abstract class CallCredentials {
+    /**
+     * Asynchronously generates a new Metadata object.
+     * @param options Options used in generating the Metadata object.
+     */
+    abstract generateMetadata(options: CallMetadataOptions): Promise<Metadata>;
+    /**
+     * Creates a new CallCredentials object from properties of both this and
+     * another CallCredentials object. This object's metadata generator will be
+     * called first.
+     * @param callCredentials The other CallCredentials object.
+     */
+    abstract compose(callCredentials: CallCredentials): CallCredentials;
+    /**
+     * Check whether two call credentials objects are equal. Separate
+     * SingleCallCredentials with identical metadata generator functions are
+     * equal.
+     * @param other The other CallCredentials object to compare with.
+     */
+    abstract _equals(other: CallCredentials): boolean;
+    /**
+     * Creates a new CallCredentials object from a given function that generates
+     * Metadata objects.
+     * @param metadataGenerator A function that accepts a set of options, and
+     * generates a Metadata object based on these options, which is passed back
+     * to the caller via a supplied (err, metadata) callback.
+     */
+    static createFromMetadataGenerator(metadataGenerator: CallMetadataGenerator): CallCredentials;
+    /**
+     * Create a gRPC credential from a Google credential object.
+     * @param googleCredentials The authentication client to use.
+     * @return The resulting CallCredentials object.
+     */
+    static createFromGoogleCredential(googleCredentials: OAuth2Client): CallCredentials;
+    static createEmpty(): CallCredentials;
+}

node_modules/@grpc/grpc-js/build/src/call-credentials.js

@@ -0,0 +1,149 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CallCredentials = void 0;
+const metadata_1 = require("./metadata");
+function isCurrentOauth2Client(client) {
+    return ('getRequestHeaders' in client &&
+        typeof client.getRequestHeaders === 'function');
+}
+/**
+ * A class that represents a generic method of adding authentication-related
+ * metadata on a per-request basis.
+ */
+class CallCredentials {
+    /**
+     * Creates a new CallCredentials object from a given function that generates
+     * Metadata objects.
+     * @param metadataGenerator A function that accepts a set of options, and
+     * generates a Metadata object based on these options, which is passed back
+     * to the caller via a supplied (err, metadata) callback.
+     */
+    static createFromMetadataGenerator(metadataGenerator) {
+        return new SingleCallCredentials(metadataGenerator);
+    }
+    /**
+     * Create a gRPC credential from a Google credential object.
+     * @param googleCredentials The authentication client to use.
+     * @return The resulting CallCredentials object.
+     */
+    static createFromGoogleCredential(googleCredentials) {
+        return CallCredentials.createFromMetadataGenerator((options, callback) => {
+            let getHeaders;
+            if (isCurrentOauth2Client(googleCredentials)) {
+                getHeaders = googleCredentials.getRequestHeaders(options.service_url);
+            }
+            else {
+                getHeaders = new Promise((resolve, reject) => {
+                    googleCredentials.getRequestMetadata(options.service_url, (err, headers) => {
+                        if (err) {
+                            reject(err);
+                            return;
+                        }
+                        resolve(headers);
+                    });
+                });
+            }
+            getHeaders.then((headers) => {
+                const metadata = new metadata_1.Metadata();
+                for (const key of Object.keys(headers)) {
+                    metadata.add(key, headers[key]);
+                }
+                callback(null, metadata);
+            }, (err) => {
+                callback(err);
+            });
+        });
+    }
+    static createEmpty() {
+        return new EmptyCallCredentials();
+    }
+}
+exports.CallCredentials = CallCredentials;
+class ComposedCallCredentials extends CallCredentials {
+    constructor(creds) {
+        super();
+        this.creds = creds;
+    }
+    async generateMetadata(options) {
+        const base = new metadata_1.Metadata();
+        const generated = await Promise.all(this.creds.map((cred) => cred.generateMetadata(options)));
+        for (const gen of generated) {
+            base.merge(gen);
+        }
+        return base;
+    }
+    compose(other) {
+        return new ComposedCallCredentials(this.creds.concat([other]));
+    }
+    _equals(other) {
+        if (this === other) {
+            return true;
+        }
+        if (other instanceof ComposedCallCredentials) {
+            return this.creds.every((value, index) => value._equals(other.creds[index]));
+        }
+        else {
+            return false;
+        }
+    }
+}
+class SingleCallCredentials extends CallCredentials {
+    constructor(metadataGenerator) {
+        super();
+        this.metadataGenerator = metadataGenerator;
+    }
+    generateMetadata(options) {
+        return new Promise((resolve, reject) => {
+            this.metadataGenerator(options, (err, metadata) => {
+                if (metadata !== undefined) {
+                    resolve(metadata);
+                }
+                else {
+                    reject(err);
+                }
+            });
+        });
+    }
+    compose(other) {
+        return new ComposedCallCredentials([this, other]);
+    }
+    _equals(other) {
+        if (this === other) {
+            return true;
+        }
+        if (other instanceof SingleCallCredentials) {
+            return this.metadataGenerator === other.metadataGenerator;
+        }
+        else {
+            return false;
+        }
+    }
+}
+class EmptyCallCredentials extends CallCredentials {
+    generateMetadata(options) {
+        return Promise.resolve(new metadata_1.Metadata());
+    }
+    compose(other) {
+        return other;
+    }
+    _equals(other) {
+        return other instanceof EmptyCallCredentials;
+    }
+}
+//# sourceMappingURL=call-credentials.js.map

node_modules/@grpc/grpc-js/build/src/call-credentials.js.map

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node_modules/@grpc/grpc-js/build/src/call-stream.d.ts

@@ -0,0 +1,164 @@
+/// <reference types="node" />
+import * as http2 from 'http2';
+import { CallCredentials } from './call-credentials';
+import { Status } from './constants';
+import { Filter } from './filter';
+import { FilterStackFactory, FilterStack } from './filter-stack';
+import { Metadata } from './metadata';
+import { ChannelImplementation } from './channel';
+import { SubchannelCallStatsTracker, Subchannel } from './subchannel';
+import { ServerSurfaceCall } from './server-call';
+export declare type Deadline = Date | number;
+export interface CallStreamOptions {
+    deadline: Deadline;
+    flags: number;
+    host: string;
+    parentCall: ServerSurfaceCall | null;
+}
+export declare type PartialCallStreamOptions = Partial<CallStreamOptions>;
+export interface StatusObject {
+    code: Status;
+    details: string;
+    metadata: Metadata;
+}
+export declare const enum WriteFlags {
+    BufferHint = 1,
+    NoCompress = 2,
+    WriteThrough = 4
+}
+export interface WriteObject {
+    message: Buffer;
+    flags?: number;
+}
+export interface MetadataListener {
+    (metadata: Metadata, next: (metadata: Metadata) => void): void;
+}
+export interface MessageListener {
+    (message: any, next: (message: any) => void): void;
+}
+export interface StatusListener {
+    (status: StatusObject, next: (status: StatusObject) => void): void;
+}
+export interface FullListener {
+    onReceiveMetadata: MetadataListener;
+    onReceiveMessage: MessageListener;
+    onReceiveStatus: StatusListener;
+}
+export declare type Listener = Partial<FullListener>;
+/**
+ * An object with methods for handling the responses to a call.
+ */
+export interface InterceptingListener {
+    onReceiveMetadata(metadata: Metadata): void;
+    onReceiveMessage(message: any): void;
+    onReceiveStatus(status: StatusObject): void;
+}
+export declare function isInterceptingListener(listener: Listener | InterceptingListener): listener is InterceptingListener;
+export declare class InterceptingListenerImpl implements InterceptingListener {
+    private listener;
+    private nextListener;
+    private processingMetadata;
+    private hasPendingMessage;
+    private pendingMessage;
+    private processingMessage;
+    private pendingStatus;
+    constructor(listener: FullListener, nextListener: InterceptingListener);
+    private processPendingMessage;
+    private processPendingStatus;
+    onReceiveMetadata(metadata: Metadata): void;
+    onReceiveMessage(message: any): void;
+    onReceiveStatus(status: StatusObject): void;
+}
+export interface WriteCallback {
+    (error?: Error | null): void;
+}
+export interface MessageContext {
+    callback?: WriteCallback;
+    flags?: number;
+}
+export interface Call {
+    cancelWithStatus(status: Status, details: string): void;
+    getPeer(): string;
+    start(metadata: Metadata, listener: InterceptingListener): void;
+    sendMessageWithContext(context: MessageContext, message: Buffer): void;
+    startRead(): void;
+    halfClose(): void;
+    getDeadline(): Deadline;
+    getCredentials(): CallCredentials;
+    setCredentials(credentials: CallCredentials): void;
+    getMethod(): string;
+    getHost(): string;
+}
+export declare class Http2CallStream implements Call {
+    private readonly methodName;
+    private readonly channel;
+    private readonly options;
+    private readonly channelCallCredentials;
+    private readonly callNumber;
+    credentials: CallCredentials;
+    filterStack: FilterStack;
+    private http2Stream;
+    private pendingRead;
+    private isWriteFilterPending;
+    private pendingWrite;
+    private pendingWriteCallback;
+    private writesClosed;
+    private decoder;
+    private isReadFilterPending;
+    private canPush;
+    /**
+     * Indicates that an 'end' event has come from the http2 stream, so there
+     * will be no more data events.
+     */
+    private readsClosed;
+    private statusOutput;
+    private unpushedReadMessages;
+    private unfilteredReadMessages;
+    private mappedStatusCode;
+    private finalStatus;
+    private subchannel;
+    private disconnectListener;
+    private listener;
+    private internalError;
+    private configDeadline;
+    private statusWatchers;
+    private streamEndWatchers;
+    private callStatsTracker;
+    constructor(methodName: string, channel: ChannelImplementation, options: CallStreamOptions, filterStackFactory: FilterStackFactory, channelCallCredentials: CallCredentials, callNumber: number);
+    private outputStatus;
+    private trace;
+    /**
+     * On first call, emits a 'status' event with the given StatusObject.
+     * Subsequent calls are no-ops.
+     * @param status The status of the call.
+     */
+    private endCall;
+    private maybeOutputStatus;
+    private push;
+    private handleFilterError;
+    private handleFilteredRead;
+    private filterReceivedMessage;
+    private tryPush;
+    private handleTrailers;
+    private writeMessageToStream;
+    attachHttp2Stream(stream: http2.ClientHttp2Stream, subchannel: Subchannel, extraFilters: Filter[], callStatsTracker: SubchannelCallStatsTracker): void;
+    start(metadata: Metadata, listener: InterceptingListener): void;
+    private destroyHttp2Stream;
+    cancelWithStatus(status: Status, details: string): void;
+    getDeadline(): Deadline;
+    getCredentials(): CallCredentials;
+    setCredentials(credentials: CallCredentials): void;
+    getStatus(): StatusObject | null;
+    getPeer(): string;
+    getMethod(): string;
+    getHost(): string;
+    setConfigDeadline(configDeadline: Deadline): void;
+    addStatusWatcher(watcher: (status: StatusObject) => void): void;
+    addStreamEndWatcher(watcher: (success: boolean) => void): void;
+    addFilters(extraFilters: Filter[]): void;
+    getCallNumber(): number;
+    startRead(): void;
+    private maybeCloseWrites;
+    sendMessageWithContext(context: MessageContext, message: Buffer): void;
+    halfClose(): void;
+}

node_modules/@grpc/grpc-js/build/src/call-stream.js

@@ -0,0 +1,694 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Http2CallStream = exports.InterceptingListenerImpl = exports.isInterceptingListener = void 0;
+const http2 = require("http2");
+const os = require("os");
+const constants_1 = require("./constants");
+const metadata_1 = require("./metadata");
+const stream_decoder_1 = require("./stream-decoder");
+const logging = require("./logging");
+const constants_2 = require("./constants");
+const TRACER_NAME = 'call_stream';
+const { HTTP2_HEADER_STATUS, HTTP2_HEADER_CONTENT_TYPE, NGHTTP2_CANCEL, } = http2.constants;
+/**
+ * Should do approximately the same thing as util.getSystemErrorName but the
+ * TypeScript types don't have that function for some reason so I just made my
+ * own.
+ * @param errno
+ */
+function getSystemErrorName(errno) {
+    for (const [name, num] of Object.entries(os.constants.errno)) {
+        if (num === errno) {
+            return name;
+        }
+    }
+    return 'Unknown system error ' + errno;
+}
+function getMinDeadline(deadlineList) {
+    let minValue = Infinity;
+    for (const deadline of deadlineList) {
+        const deadlineMsecs = deadline instanceof Date ? deadline.getTime() : deadline;
+        if (deadlineMsecs < minValue) {
+            minValue = deadlineMsecs;
+        }
+    }
+    return minValue;
+}
+function isInterceptingListener(listener) {
+    return (listener.onReceiveMetadata !== undefined &&
+        listener.onReceiveMetadata.length === 1);
+}
+exports.isInterceptingListener = isInterceptingListener;
+class InterceptingListenerImpl {
+    constructor(listener, nextListener) {
+        this.listener = listener;
+        this.nextListener = nextListener;
+        this.processingMetadata = false;
+        this.hasPendingMessage = false;
+        this.processingMessage = false;
+        this.pendingStatus = null;
+    }
+    processPendingMessage() {
+        if (this.hasPendingMessage) {
+            this.nextListener.onReceiveMessage(this.pendingMessage);
+            this.pendingMessage = null;
+            this.hasPendingMessage = false;
+        }
+    }
+    processPendingStatus() {
+        if (this.pendingStatus) {
+            this.nextListener.onReceiveStatus(this.pendingStatus);
+        }
+    }
+    onReceiveMetadata(metadata) {
+        this.processingMetadata = true;
+        this.listener.onReceiveMetadata(metadata, (metadata) => {
+            this.processingMetadata = false;
+            this.nextListener.onReceiveMetadata(metadata);
+            this.processPendingMessage();
+            this.processPendingStatus();
+        });
+    }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    onReceiveMessage(message) {
+        /* If this listener processes messages asynchronously, the last message may
+         * be reordered with respect to the status */
+        this.processingMessage = true;
+        this.listener.onReceiveMessage(message, (msg) => {
+            this.processingMessage = false;
+            if (this.processingMetadata) {
+                this.pendingMessage = msg;
+                this.hasPendingMessage = true;
+            }
+            else {
+                this.nextListener.onReceiveMessage(msg);
+                this.processPendingStatus();
+            }
+        });
+    }
+    onReceiveStatus(status) {
+        this.listener.onReceiveStatus(status, (processedStatus) => {
+            if (this.processingMetadata || this.processingMessage) {
+                this.pendingStatus = processedStatus;
+            }
+            else {
+                this.nextListener.onReceiveStatus(processedStatus);
+            }
+        });
+    }
+}
+exports.InterceptingListenerImpl = InterceptingListenerImpl;
+class Http2CallStream {
+    constructor(methodName, channel, options, filterStackFactory, channelCallCredentials, callNumber) {
+        this.methodName = methodName;
+        this.channel = channel;
+        this.options = options;
+        this.channelCallCredentials = channelCallCredentials;
+        this.callNumber = callNumber;
+        this.http2Stream = null;
+        this.pendingRead = false;
+        this.isWriteFilterPending = false;
+        this.pendingWrite = null;
+        this.pendingWriteCallback = null;
+        this.writesClosed = false;
+        this.decoder = new stream_decoder_1.StreamDecoder();
+        this.isReadFilterPending = false;
+        this.canPush = false;
+        /**
+         * Indicates that an 'end' event has come from the http2 stream, so there
+         * will be no more data events.
+         */
+        this.readsClosed = false;
+        this.statusOutput = false;
+        this.unpushedReadMessages = [];
+        this.unfilteredReadMessages = [];
+        // Status code mapped from :status. To be used if grpc-status is not received
+        this.mappedStatusCode = constants_1.Status.UNKNOWN;
+        // This is populated (non-null) if and only if the call has ended
+        this.finalStatus = null;
+        this.subchannel = null;
+        this.listener = null;
+        this.internalError = null;
+        this.configDeadline = Infinity;
+        this.statusWatchers = [];
+        this.streamEndWatchers = [];
+        this.callStatsTracker = null;
+        this.filterStack = filterStackFactory.createFilter(this);
+        this.credentials = channelCallCredentials;
+        this.disconnectListener = () => {
+            this.endCall({
+                code: constants_1.Status.UNAVAILABLE,
+                details: 'Connection dropped',
+                metadata: new metadata_1.Metadata(),
+            });
+        };
+        if (this.options.parentCall &&
+            this.options.flags & constants_1.Propagate.CANCELLATION) {
+            this.options.parentCall.on('cancelled', () => {
+                this.cancelWithStatus(constants_1.Status.CANCELLED, 'Cancelled by parent call');
+            });
+        }
+    }
+    outputStatus() {
+        /* Precondition: this.finalStatus !== null */
+        if (this.listener && !this.statusOutput) {
+            this.statusOutput = true;
+            const filteredStatus = this.filterStack.receiveTrailers(this.finalStatus);
+            this.trace('ended with status: code=' +
+                filteredStatus.code +
+                ' details="' +
+                filteredStatus.details +
+                '"');
+            this.statusWatchers.forEach(watcher => watcher(filteredStatus));
+            /* We delay the actual action of bubbling up the status to insulate the
+             * cleanup code in this class from any errors that may be thrown in the
+             * upper layers as a result of bubbling up the status. In particular,
+             * if the status is not OK, the "error" event may be emitted
+             * synchronously at the top level, which will result in a thrown error if
+             * the user does not handle that event. */
+            process.nextTick(() => {
+                var _a;
+                (_a = this.listener) === null || _a === void 0 ? void 0 : _a.onReceiveStatus(filteredStatus);
+            });
+            if (this.subchannel) {
+                this.subchannel.callUnref();
+                this.subchannel.removeDisconnectListener(this.disconnectListener);
+            }
+        }
+    }
+    trace(text) {
+        logging.trace(constants_2.LogVerbosity.DEBUG, TRACER_NAME, '[' + this.callNumber + '] ' + text);
+    }
+    /**
+     * On first call, emits a 'status' event with the given StatusObject.
+     * Subsequent calls are no-ops.
+     * @param status The status of the call.
+     */
+    endCall(status) {
+        /* If the status is OK and a new status comes in (e.g. from a
+         * deserialization failure), that new status takes priority */
+        if (this.finalStatus === null || this.finalStatus.code === constants_1.Status.OK) {
+            this.finalStatus = status;
+            this.maybeOutputStatus();
+        }
+        this.destroyHttp2Stream();
+    }
+    maybeOutputStatus() {
+        if (this.finalStatus !== null) {
+            /* The combination check of readsClosed and that the two message buffer
+             * arrays are empty checks that there all incoming data has been fully
+             * processed */
+            if (this.finalStatus.code !== constants_1.Status.OK ||
+                (this.readsClosed &&
+                    this.unpushedReadMessages.length === 0 &&
+                    this.unfilteredReadMessages.length === 0 &&
+                    !this.isReadFilterPending)) {
+                this.outputStatus();
+            }
+        }
+    }
+    push(message) {
+        this.trace('pushing to reader message of length ' +
+            (message instanceof Buffer ? message.length : null));
+        this.canPush = false;
+        process.nextTick(() => {
+            var _a;
+            /* If we have already output the status any later messages should be
+             * ignored, and can cause out-of-order operation errors higher up in the
+             * stack. Checking as late as possible here to avoid any race conditions.
+             */
+            if (this.statusOutput) {
+                return;
+            }
+            (_a = this.listener) === null || _a === void 0 ? void 0 : _a.onReceiveMessage(message);
+            this.maybeOutputStatus();
+        });
+    }
+    handleFilterError(error) {
+        this.cancelWithStatus(constants_1.Status.INTERNAL, error.message);
+    }
+    handleFilteredRead(message) {
+        /* If we the call has already ended with an error, we don't want to do
+         * anything with this message. Dropping it on the floor is correct
+         * behavior */
+        if (this.finalStatus !== null && this.finalStatus.code !== constants_1.Status.OK) {
+            this.maybeOutputStatus();
+            return;
+        }
+        this.isReadFilterPending = false;
+        if (this.canPush) {
+            this.http2Stream.pause();
+            this.push(message);
+        }
+        else {
+            this.trace('unpushedReadMessages.push message of length ' + message.length);
+            this.unpushedReadMessages.push(message);
+        }
+        if (this.unfilteredReadMessages.length > 0) {
+            /* nextMessage is guaranteed not to be undefined because
+               unfilteredReadMessages is non-empty */
+            const nextMessage = this.unfilteredReadMessages.shift();
+            this.filterReceivedMessage(nextMessage);
+        }
+    }
+    filterReceivedMessage(framedMessage) {
+        /* If we the call has already ended with an error, we don't want to do
+         * anything with this message. Dropping it on the floor is correct
+         * behavior */
+        if (this.finalStatus !== null && this.finalStatus.code !== constants_1.Status.OK) {
+            this.maybeOutputStatus();
+            return;
+        }
+        this.trace('filterReceivedMessage of length ' + framedMessage.length);
+        this.isReadFilterPending = true;
+        this.filterStack
+            .receiveMessage(Promise.resolve(framedMessage))
+            .then(this.handleFilteredRead.bind(this), this.handleFilterError.bind(this));
+    }
+    tryPush(messageBytes) {
+        if (this.isReadFilterPending) {
+            this.trace('unfilteredReadMessages.push message of length ' +
+                (messageBytes && messageBytes.length));
+            this.unfilteredReadMessages.push(messageBytes);
+        }
+        else {
+            this.filterReceivedMessage(messageBytes);
+        }
+    }
+    handleTrailers(headers) {
+        this.streamEndWatchers.forEach(watcher => watcher(true));
+        let headersString = '';
+        for (const header of Object.keys(headers)) {
+            headersString += '\t\t' + header + ': ' + headers[header] + '\n';
+        }
+        this.trace('Received server trailers:\n' + headersString);
+        let metadata;
+        try {
+            metadata = metadata_1.Metadata.fromHttp2Headers(headers);
+        }
+        catch (e) {
+            metadata = new metadata_1.Metadata();
+        }
+        const metadataMap = metadata.getMap();
+        let code = this.mappedStatusCode;
+        if (code === constants_1.Status.UNKNOWN &&
+            typeof metadataMap['grpc-status'] === 'string') {
+            const receivedStatus = Number(metadataMap['grpc-status']);
+            if (receivedStatus in constants_1.Status) {
+                code = receivedStatus;
+                this.trace('received status code ' + receivedStatus + ' from server');
+            }
+            metadata.remove('grpc-status');
+        }
+        let details = '';
+        if (typeof metadataMap['grpc-message'] === 'string') {
+            details = decodeURI(metadataMap['grpc-message']);
+            metadata.remove('grpc-message');
+            this.trace('received status details string "' + details + '" from server');
+        }
+        const status = { code, details, metadata };
+        // This is a no-op if the call was already ended when handling headers.
+        this.endCall(status);
+    }
+    writeMessageToStream(message, callback) {
+        var _a;
+        (_a = this.callStatsTracker) === null || _a === void 0 ? void 0 : _a.addMessageSent();
+        this.http2Stream.write(message, callback);
+    }
+    attachHttp2Stream(stream, subchannel, extraFilters, callStatsTracker) {
+        this.filterStack.push(extraFilters);
+        if (this.finalStatus !== null) {
+            stream.close(NGHTTP2_CANCEL);
+        }
+        else {
+            this.trace('attachHttp2Stream from subchannel ' + subchannel.getAddress());
+            this.http2Stream = stream;
+            this.subchannel = subchannel;
+            this.callStatsTracker = callStatsTracker;
+            subchannel.addDisconnectListener(this.disconnectListener);
+            subchannel.callRef();
+            stream.on('response', (headers, flags) => {
+                var _a;
+                let headersString = '';
+                for (const header of Object.keys(headers)) {
+                    headersString += '\t\t' + header + ': ' + headers[header] + '\n';
+                }
+                this.trace('Received server headers:\n' + headersString);
+                switch (headers[':status']) {
+                    // TODO(murgatroid99): handle 100 and 101
+                    case 400:
+                        this.mappedStatusCode = constants_1.Status.INTERNAL;
+                        break;
+                    case 401:
+                        this.mappedStatusCode = constants_1.Status.UNAUTHENTICATED;
+                        break;
+                    case 403:
+                        this.mappedStatusCode = constants_1.Status.PERMISSION_DENIED;
+                        break;
+                    case 404:
+                        this.mappedStatusCode = constants_1.Status.UNIMPLEMENTED;
+                        break;
+                    case 429:
+                    case 502:
+                    case 503:
+                    case 504:
+                        this.mappedStatusCode = constants_1.Status.UNAVAILABLE;
+                        break;
+                    default:
+                        this.mappedStatusCode = constants_1.Status.UNKNOWN;
+                }
+                if (flags & http2.constants.NGHTTP2_FLAG_END_STREAM) {
+                    this.handleTrailers(headers);
+                }
+                else {
+                    let metadata;
+                    try {
+                        metadata = metadata_1.Metadata.fromHttp2Headers(headers);
+                    }
+                    catch (error) {
+                        this.endCall({
+                            code: constants_1.Status.UNKNOWN,
+                            details: error.message,
+                            metadata: new metadata_1.Metadata(),
+                        });
+                        return;
+                    }
+                    try {
+                        const finalMetadata = this.filterStack.receiveMetadata(metadata);
+                        (_a = this.listener) === null || _a === void 0 ? void 0 : _a.onReceiveMetadata(finalMetadata);
+                    }
+                    catch (error) {
+                        this.endCall({
+                            code: constants_1.Status.UNKNOWN,
+                            details: error.message,
+                            metadata: new metadata_1.Metadata(),
+                        });
+                    }
+                }
+            });
+            stream.on('trailers', this.handleTrailers.bind(this));
+            stream.on('data', (data) => {
+                this.trace('receive HTTP/2 data frame of length ' + data.length);
+                const messages = this.decoder.write(data);
+                for (const message of messages) {
+                    this.trace('parsed message of length ' + message.length);
+                    this.callStatsTracker.addMessageReceived();
+                    this.tryPush(message);
+                }
+            });
+            stream.on('end', () => {
+                this.readsClosed = true;
+                this.maybeOutputStatus();
+            });
+            stream.on('close', () => {
+                /* Use process.next tick to ensure that this code happens after any
+                 * "error" event that may be emitted at about the same time, so that
+                 * we can bubble up the error message from that event. */
+                process.nextTick(() => {
+                    var _a;
+                    this.trace('HTTP/2 stream closed with code ' + stream.rstCode);
+                    /* If we have a final status with an OK status code, that means that
+                     * we have received all of the messages and we have processed the
+                     * trailers and the call completed successfully, so it doesn't matter
+                     * how the stream ends after that */
+                    if (((_a = this.finalStatus) === null || _a === void 0 ? void 0 : _a.code) === constants_1.Status.OK) {
+                        return;
+                    }
+                    let code;
+                    let details = '';
+                    switch (stream.rstCode) {
+                        case http2.constants.NGHTTP2_NO_ERROR:
+                            /* If we get a NO_ERROR code and we already have a status, the
+                             * stream completed properly and we just haven't fully processed
+                             * it yet */
+                            if (this.finalStatus !== null) {
+                                return;
+                            }
+                            code = constants_1.Status.INTERNAL;
+                            details = `Received RST_STREAM with code ${stream.rstCode}`;
+                            break;
+                        case http2.constants.NGHTTP2_REFUSED_STREAM:
+                            code = constants_1.Status.UNAVAILABLE;
+                            details = 'Stream refused by server';
+                            break;
+                        case http2.constants.NGHTTP2_CANCEL:
+                            code = constants_1.Status.CANCELLED;
+                            details = 'Call cancelled';
+                            break;
+                        case http2.constants.NGHTTP2_ENHANCE_YOUR_CALM:
+                            code = constants_1.Status.RESOURCE_EXHAUSTED;
+                            details = 'Bandwidth exhausted or memory limit exceeded';
+                            break;
+                        case http2.constants.NGHTTP2_INADEQUATE_SECURITY:
+                            code = constants_1.Status.PERMISSION_DENIED;
+                            details = 'Protocol not secure enough';
+                            break;
+                        case http2.constants.NGHTTP2_INTERNAL_ERROR:
+                            code = constants_1.Status.INTERNAL;
+                            if (this.internalError === null) {
+                                /* This error code was previously handled in the default case, and
+                                 * there are several instances of it online, so I wanted to
+                                 * preserve the original error message so that people find existing
+                                 * information in searches, but also include the more recognizable
+                                 * "Internal server error" message. */
+                                details = `Received RST_STREAM with code ${stream.rstCode} (Internal server error)`;
+                            }
+                            else {
+                                if (this.internalError.code === 'ECONNRESET' || this.internalError.code === 'ETIMEDOUT') {
+                                    code = constants_1.Status.UNAVAILABLE;
+                                    details = this.internalError.message;
+                                }
+                                else {
+                                    /* The "Received RST_STREAM with code ..." error is preserved
+                                     * here for continuity with errors reported online, but the
+                                     * error message at the end will probably be more relevant in
+                                     * most cases. */
+                                    details = `Received RST_STREAM with code ${stream.rstCode} triggered by internal client error: ${this.internalError.message}`;
+                                }
+                            }
+                            break;
+                        default:
+                            code = constants_1.Status.INTERNAL;
+                            details = `Received RST_STREAM with code ${stream.rstCode}`;
+                    }
+                    // This is a no-op if trailers were received at all.
+                    // This is OK, because status codes emitted here correspond to more
+                    // catastrophic issues that prevent us from receiving trailers in the
+                    // first place.
+                    this.endCall({ code, details, metadata: new metadata_1.Metadata() });
+                });
+            });
+            stream.on('error', (err) => {
+                /* We need an error handler here to stop "Uncaught Error" exceptions
+                 * from bubbling up. However, errors here should all correspond to
+                 * "close" events, where we will handle the error more granularly */
+                /* Specifically looking for stream errors that were *not* constructed
+                 * from a RST_STREAM response here:
+                 * https://github.com/nodejs/node/blob/8b8620d580314050175983402dfddf2674e8e22a/lib/internal/http2/core.js#L2267
+                 */
+                if (err.code !== 'ERR_HTTP2_STREAM_ERROR') {
+                    this.trace('Node error event: message=' +
+                        err.message +
+                        ' code=' +
+                        err.code +
+                        ' errno=' +
+                        getSystemErrorName(err.errno) +
+                        ' syscall=' +
+                        err.syscall);
+                    this.internalError = err;
+                }
+                this.streamEndWatchers.forEach(watcher => watcher(false));
+            });
+            if (!this.pendingRead) {
+                stream.pause();
+            }
+            if (this.pendingWrite) {
+                if (!this.pendingWriteCallback) {
+                    throw new Error('Invalid state in write handling code');
+                }
+                this.trace('sending data chunk of length ' +
+                    this.pendingWrite.length +
+                    ' (deferred)');
+                try {
+                    this.writeMessageToStream(this.pendingWrite, this.pendingWriteCallback);
+                }
+                catch (error) {
+                    this.endCall({
+                        code: constants_1.Status.UNAVAILABLE,
+                        details: `Write failed with error ${error.message}`,
+                        metadata: new metadata_1.Metadata()
+                    });
+                }
+            }
+            this.maybeCloseWrites();
+        }
+    }
+    start(metadata, listener) {
+        this.trace('Sending metadata');
+        this.listener = listener;
+        this.channel._startCallStream(this, metadata);
+        this.maybeOutputStatus();
+    }
+    destroyHttp2Stream() {
+        var _a;
+        // The http2 stream could already have been destroyed if cancelWithStatus
+        // is called in response to an internal http2 error.
+        if (this.http2Stream !== null && !this.http2Stream.destroyed) {
+            /* If the call has ended with an OK status, communicate that when closing
+             * the stream, partly to avoid a situation in which we detect an error
+             * RST_STREAM as a result after we have the status */
+            let code;
+            if (((_a = this.finalStatus) === null || _a === void 0 ? void 0 : _a.code) === constants_1.Status.OK) {
+                code = http2.constants.NGHTTP2_NO_ERROR;
+            }
+            else {
+                code = http2.constants.NGHTTP2_CANCEL;
+            }
+            this.trace('close http2 stream with code ' + code);
+            this.http2Stream.close(code);
+        }
+    }
+    cancelWithStatus(status, details) {
+        this.trace('cancelWithStatus code: ' + status + ' details: "' + details + '"');
+        this.endCall({ code: status, details, metadata: new metadata_1.Metadata() });
+    }
+    getDeadline() {
+        const deadlineList = [this.options.deadline];
+        if (this.options.parentCall && this.options.flags & constants_1.Propagate.DEADLINE) {
+            deadlineList.push(this.options.parentCall.getDeadline());
+        }
+        if (this.configDeadline) {
+            deadlineList.push(this.configDeadline);
+        }
+        return getMinDeadline(deadlineList);
+    }
+    getCredentials() {
+        return this.credentials;
+    }
+    setCredentials(credentials) {
+        this.credentials = this.channelCallCredentials.compose(credentials);
+    }
+    getStatus() {
+        return this.finalStatus;
+    }
+    getPeer() {
+        var _a, _b;
+        return (_b = (_a = this.subchannel) === null || _a === void 0 ? void 0 : _a.getAddress()) !== null && _b !== void 0 ? _b : this.channel.getTarget();
+    }
+    getMethod() {
+        return this.methodName;
+    }
+    getHost() {
+        return this.options.host;
+    }
+    setConfigDeadline(configDeadline) {
+        this.configDeadline = configDeadline;
+    }
+    addStatusWatcher(watcher) {
+        this.statusWatchers.push(watcher);
+    }
+    addStreamEndWatcher(watcher) {
+        this.streamEndWatchers.push(watcher);
+    }
+    addFilters(extraFilters) {
+        this.filterStack.push(extraFilters);
+    }
+    getCallNumber() {
+        return this.callNumber;
+    }
+    startRead() {
+        /* If the stream has ended with an error, we should not emit any more
+         * messages and we should communicate that the stream has ended */
+        if (this.finalStatus !== null && this.finalStatus.code !== constants_1.Status.OK) {
+            this.readsClosed = true;
+            this.maybeOutputStatus();
+            return;
+        }
+        this.canPush = true;
+        if (this.http2Stream === null) {
+            this.pendingRead = true;
+        }
+        else {
+            if (this.unpushedReadMessages.length > 0) {
+                const nextMessage = this.unpushedReadMessages.shift();
+                this.push(nextMessage);
+                return;
+            }
+            /* Only resume reading from the http2Stream if we don't have any pending
+             * messages to emit */
+            this.http2Stream.resume();
+        }
+    }
+    maybeCloseWrites() {
+        if (this.writesClosed &&
+            !this.isWriteFilterPending &&
+            this.http2Stream !== null) {
+            this.trace('calling end() on HTTP/2 stream');
+            this.http2Stream.end();
+        }
+    }
+    sendMessageWithContext(context, message) {
+        this.trace('write() called with message of length ' + message.length);
+        const writeObj = {
+            message,
+            flags: context.flags,
+        };
+        const cb = (error) => {
+            var _a, _b;
+            let code = constants_1.Status.UNAVAILABLE;
+            if (((_a = error) === null || _a === void 0 ? void 0 : _a.code) === 'ERR_STREAM_WRITE_AFTER_END') {
+                code = constants_1.Status.INTERNAL;
+            }
+            if (error) {
+                this.cancelWithStatus(code, `Write error: ${error.message}`);
+            }
+            (_b = context.callback) === null || _b === void 0 ? void 0 : _b.call(context);
+        };
+        this.isWriteFilterPending = true;
+        this.filterStack.sendMessage(Promise.resolve(writeObj)).then((message) => {
+            this.isWriteFilterPending = false;
+            if (this.http2Stream === null) {
+                this.trace('deferring writing data chunk of length ' + message.message.length);
+                this.pendingWrite = message.message;
+                this.pendingWriteCallback = cb;
+            }
+            else {
+                this.trace('sending data chunk of length ' + message.message.length);
+                try {
+                    this.writeMessageToStream(message.message, cb);
+                }
+                catch (error) {
+                    this.endCall({
+                        code: constants_1.Status.UNAVAILABLE,
+                        details: `Write failed with error ${error.message}`,
+                        metadata: new metadata_1.Metadata()
+                    });
+                }
+                this.maybeCloseWrites();
+            }
+        }, this.handleFilterError.bind(this));
+    }
+    halfClose() {
+        this.trace('end() called');
+        this.writesClosed = true;
+        this.maybeCloseWrites();
+    }
+}
+exports.Http2CallStream = Http2CallStream;
+//# sourceMappingURL=call-stream.js.map

node_modules/@grpc/grpc-js/build/src/call.d.ts

@@ -0,0 +1,81 @@
+/// <reference types="node" />
+import { EventEmitter } from 'events';
+import { Duplex, Readable, Writable } from 'stream';
+import { StatusObject } from './call-stream';
+import { EmitterAugmentation1 } from './events';
+import { Metadata } from './metadata';
+import { ObjectReadable, ObjectWritable, WriteCallback } from './object-stream';
+import { InterceptingCallInterface } from './client-interceptors';
+/**
+ * A type extending the built-in Error object with additional fields.
+ */
+export declare type ServiceError = StatusObject & Error;
+/**
+ * A base type for all user-facing values returned by client-side method calls.
+ */
+export declare type SurfaceCall = {
+    call?: InterceptingCallInterface;
+    cancel(): void;
+    getPeer(): string;
+} & EmitterAugmentation1<'metadata', Metadata> & EmitterAugmentation1<'status', StatusObject> & EventEmitter;
+/**
+ * A type representing the return value of a unary method call.
+ */
+export declare type ClientUnaryCall = SurfaceCall;
+/**
+ * A type representing the return value of a server stream method call.
+ */
+export declare type ClientReadableStream<ResponseType> = {
+    deserialize: (chunk: Buffer) => ResponseType;
+} & SurfaceCall & ObjectReadable<ResponseType>;
+/**
+ * A type representing the return value of a client stream method call.
+ */
+export declare type ClientWritableStream<RequestType> = {
+    serialize: (value: RequestType) => Buffer;
+} & SurfaceCall & ObjectWritable<RequestType>;
+/**
+ * A type representing the return value of a bidirectional stream method call.
+ */
+export declare type ClientDuplexStream<RequestType, ResponseType> = ClientWritableStream<RequestType> & ClientReadableStream<ResponseType>;
+/**
+ * Construct a ServiceError from a StatusObject. This function exists primarily
+ * as an attempt to make the error stack trace clearly communicate that the
+ * error is not necessarily a problem in gRPC itself.
+ * @param status
+ */
+export declare function callErrorFromStatus(status: StatusObject): ServiceError;
+export declare class ClientUnaryCallImpl extends EventEmitter implements ClientUnaryCall {
+    call?: InterceptingCallInterface;
+    constructor();
+    cancel(): void;
+    getPeer(): string;
+}
+export declare class ClientReadableStreamImpl<ResponseType> extends Readable implements ClientReadableStream<ResponseType> {
+    readonly deserialize: (chunk: Buffer) => ResponseType;
+    call?: InterceptingCallInterface;
+    constructor(deserialize: (chunk: Buffer) => ResponseType);
+    cancel(): void;
+    getPeer(): string;
+    _read(_size: number): void;
+}
+export declare class ClientWritableStreamImpl<RequestType> extends Writable implements ClientWritableStream<RequestType> {
+    readonly serialize: (value: RequestType) => Buffer;
+    call?: InterceptingCallInterface;
+    constructor(serialize: (value: RequestType) => Buffer);
+    cancel(): void;
+    getPeer(): string;
+    _write(chunk: RequestType, encoding: string, cb: WriteCallback): void;
+    _final(cb: Function): void;
+}
+export declare class ClientDuplexStreamImpl<RequestType, ResponseType> extends Duplex implements ClientDuplexStream<RequestType, ResponseType> {
+    readonly serialize: (value: RequestType) => Buffer;
+    readonly deserialize: (chunk: Buffer) => ResponseType;
+    call?: InterceptingCallInterface;
+    constructor(serialize: (value: RequestType) => Buffer, deserialize: (chunk: Buffer) => ResponseType);
+    cancel(): void;
+    getPeer(): string;
+    _read(_size: number): void;
+    _write(chunk: RequestType, encoding: string, cb: WriteCallback): void;
+    _final(cb: Function): void;
+}

node_modules/@grpc/grpc-js/build/src/call.js

@@ -0,0 +1,134 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ClientDuplexStreamImpl = exports.ClientWritableStreamImpl = exports.ClientReadableStreamImpl = exports.ClientUnaryCallImpl = exports.callErrorFromStatus = void 0;
+const events_1 = require("events");
+const stream_1 = require("stream");
+const constants_1 = require("./constants");
+/**
+ * Construct a ServiceError from a StatusObject. This function exists primarily
+ * as an attempt to make the error stack trace clearly communicate that the
+ * error is not necessarily a problem in gRPC itself.
+ * @param status
+ */
+function callErrorFromStatus(status) {
+    const message = `${status.code} ${constants_1.Status[status.code]}: ${status.details}`;
+    return Object.assign(new Error(message), status);
+}
+exports.callErrorFromStatus = callErrorFromStatus;
+class ClientUnaryCallImpl extends events_1.EventEmitter {
+    constructor() {
+        super();
+    }
+    cancel() {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.cancelWithStatus(constants_1.Status.CANCELLED, 'Cancelled on client');
+    }
+    getPeer() {
+        var _a, _b;
+        return (_b = (_a = this.call) === null || _a === void 0 ? void 0 : _a.getPeer()) !== null && _b !== void 0 ? _b : 'unknown';
+    }
+}
+exports.ClientUnaryCallImpl = ClientUnaryCallImpl;
+class ClientReadableStreamImpl extends stream_1.Readable {
+    constructor(deserialize) {
+        super({ objectMode: true });
+        this.deserialize = deserialize;
+    }
+    cancel() {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.cancelWithStatus(constants_1.Status.CANCELLED, 'Cancelled on client');
+    }
+    getPeer() {
+        var _a, _b;
+        return (_b = (_a = this.call) === null || _a === void 0 ? void 0 : _a.getPeer()) !== null && _b !== void 0 ? _b : 'unknown';
+    }
+    _read(_size) {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.startRead();
+    }
+}
+exports.ClientReadableStreamImpl = ClientReadableStreamImpl;
+class ClientWritableStreamImpl extends stream_1.Writable {
+    constructor(serialize) {
+        super({ objectMode: true });
+        this.serialize = serialize;
+    }
+    cancel() {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.cancelWithStatus(constants_1.Status.CANCELLED, 'Cancelled on client');
+    }
+    getPeer() {
+        var _a, _b;
+        return (_b = (_a = this.call) === null || _a === void 0 ? void 0 : _a.getPeer()) !== null && _b !== void 0 ? _b : 'unknown';
+    }
+    _write(chunk, encoding, cb) {
+        var _a;
+        const context = {
+            callback: cb,
+        };
+        const flags = Number(encoding);
+        if (!Number.isNaN(flags)) {
+            context.flags = flags;
+        }
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.sendMessageWithContext(context, chunk);
+    }
+    _final(cb) {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.halfClose();
+        cb();
+    }
+}
+exports.ClientWritableStreamImpl = ClientWritableStreamImpl;
+class ClientDuplexStreamImpl extends stream_1.Duplex {
+    constructor(serialize, deserialize) {
+        super({ objectMode: true });
+        this.serialize = serialize;
+        this.deserialize = deserialize;
+    }
+    cancel() {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.cancelWithStatus(constants_1.Status.CANCELLED, 'Cancelled on client');
+    }
+    getPeer() {
+        var _a, _b;
+        return (_b = (_a = this.call) === null || _a === void 0 ? void 0 : _a.getPeer()) !== null && _b !== void 0 ? _b : 'unknown';
+    }
+    _read(_size) {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.startRead();
+    }
+    _write(chunk, encoding, cb) {
+        var _a;
+        const context = {
+            callback: cb,
+        };
+        const flags = Number(encoding);
+        if (!Number.isNaN(flags)) {
+            context.flags = flags;
+        }
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.sendMessageWithContext(context, chunk);
+    }
+    _final(cb) {
+        var _a;
+        (_a = this.call) === null || _a === void 0 ? void 0 : _a.halfClose();
+        cb();
+    }
+}
+exports.ClientDuplexStreamImpl = ClientDuplexStreamImpl;
+//# sourceMappingURL=call.js.map

node_modules/@grpc/grpc-js/build/src/call.js.map

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node_modules/@grpc/grpc-js/build/src/channel-credentials.d.ts

@@ -0,0 +1,82 @@
+/// <reference types="node" />
+import { ConnectionOptions, PeerCertificate, SecureContext } from 'tls';
+import { CallCredentials } from './call-credentials';
+/**
+ * A callback that will receive the expected hostname and presented peer
+ * certificate as parameters. The callback should return an error to
+ * indicate that the presented certificate is considered invalid and
+ * otherwise returned undefined.
+ */
+export declare type CheckServerIdentityCallback = (hostname: string, cert: PeerCertificate) => Error | undefined;
+/**
+ * Additional peer verification options that can be set when creating
+ * SSL credentials.
+ */
+export interface VerifyOptions {
+    /**
+     * If set, this callback will be invoked after the usual hostname verification
+     * has been performed on the peer certificate.
+     */
+    checkServerIdentity?: CheckServerIdentityCallback;
+}
+/**
+ * A class that contains credentials for communicating over a channel, as well
+ * as a set of per-call credentials, which are applied to every method call made
+ * over a channel initialized with an instance of this class.
+ */
+export declare abstract class ChannelCredentials {
+    protected callCredentials: CallCredentials;
+    protected constructor(callCredentials?: CallCredentials);
+    /**
+     * Returns a copy of this object with the included set of per-call credentials
+     * expanded to include callCredentials.
+     * @param callCredentials A CallCredentials object to associate with this
+     * instance.
+     */
+    abstract compose(callCredentials: CallCredentials): ChannelCredentials;
+    /**
+     * Gets the set of per-call credentials associated with this instance.
+     */
+    _getCallCredentials(): CallCredentials;
+    /**
+     * Gets a SecureContext object generated from input parameters if this
+     * instance was created with createSsl, or null if this instance was created
+     * with createInsecure.
+     */
+    abstract _getConnectionOptions(): ConnectionOptions | null;
+    /**
+     * Indicates whether this credentials object creates a secure channel.
+     */
+    abstract _isSecure(): boolean;
+    /**
+     * Check whether two channel credentials objects are equal. Two secure
+     * credentials are equal if they were constructed with the same parameters.
+     * @param other The other ChannelCredentials Object
+     */
+    abstract _equals(other: ChannelCredentials): boolean;
+    /**
+     * Return a new ChannelCredentials instance with a given set of credentials.
+     * The resulting instance can be used to construct a Channel that communicates
+     * over TLS.
+     * @param rootCerts The root certificate data.
+     * @param privateKey The client certificate private key, if available.
+     * @param certChain The client certificate key chain, if available.
+     * @param verifyOptions Additional options to modify certificate verification
+     */
+    static createSsl(rootCerts?: Buffer | null, privateKey?: Buffer | null, certChain?: Buffer | null, verifyOptions?: VerifyOptions): ChannelCredentials;
+    /**
+     * Return a new ChannelCredentials instance with credentials created using
+     * the provided secureContext. The resulting instances can be used to
+     * construct a Channel that communicates over TLS. gRPC will not override
+     * anything in the provided secureContext, so the environment variables
+     * GRPC_SSL_CIPHER_SUITES and GRPC_DEFAULT_SSL_ROOTS_FILE_PATH will
+     * not be applied.
+     * @param secureContext The return value of tls.createSecureContext()
+     * @param verifyOptions Additional options to modify certificate verification
+     */
+    static createFromSecureContext(secureContext: SecureContext, verifyOptions?: VerifyOptions): ChannelCredentials;
+    /**
+     * Return a new ChannelCredentials instance with no credentials.
+     */
+    static createInsecure(): ChannelCredentials;
+}

node_modules/@grpc/grpc-js/build/src/channel-credentials.js

@@ -0,0 +1,183 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ChannelCredentials = void 0;
+const tls_1 = require("tls");
+const call_credentials_1 = require("./call-credentials");
+const tls_helpers_1 = require("./tls-helpers");
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function verifyIsBufferOrNull(obj, friendlyName) {
+    if (obj && !(obj instanceof Buffer)) {
+        throw new TypeError(`${friendlyName}, if provided, must be a Buffer.`);
+    }
+}
+function bufferOrNullEqual(buf1, buf2) {
+    if (buf1 === null && buf2 === null) {
+        return true;
+    }
+    else {
+        return buf1 !== null && buf2 !== null && buf1.equals(buf2);
+    }
+}
+/**
+ * A class that contains credentials for communicating over a channel, as well
+ * as a set of per-call credentials, which are applied to every method call made
+ * over a channel initialized with an instance of this class.
+ */
+class ChannelCredentials {
+    constructor(callCredentials) {
+        this.callCredentials = callCredentials || call_credentials_1.CallCredentials.createEmpty();
+    }
+    /**
+     * Gets the set of per-call credentials associated with this instance.
+     */
+    _getCallCredentials() {
+        return this.callCredentials;
+    }
+    /**
+     * Return a new ChannelCredentials instance with a given set of credentials.
+     * The resulting instance can be used to construct a Channel that communicates
+     * over TLS.
+     * @param rootCerts The root certificate data.
+     * @param privateKey The client certificate private key, if available.
+     * @param certChain The client certificate key chain, if available.
+     * @param verifyOptions Additional options to modify certificate verification
+     */
+    static createSsl(rootCerts, privateKey, certChain, verifyOptions) {
+        var _a;
+        verifyIsBufferOrNull(rootCerts, 'Root certificate');
+        verifyIsBufferOrNull(privateKey, 'Private key');
+        verifyIsBufferOrNull(certChain, 'Certificate chain');
+        if (privateKey && !certChain) {
+            throw new Error('Private key must be given with accompanying certificate chain');
+        }
+        if (!privateKey && certChain) {
+            throw new Error('Certificate chain must be given with accompanying private key');
+        }
+        const secureContext = tls_1.createSecureContext({
+            ca: (_a = rootCerts !== null && rootCerts !== void 0 ? rootCerts : tls_helpers_1.getDefaultRootsData()) !== null && _a !== void 0 ? _a : undefined,
+            key: privateKey !== null && privateKey !== void 0 ? privateKey : undefined,
+            cert: certChain !== null && certChain !== void 0 ? certChain : undefined,
+            ciphers: tls_helpers_1.CIPHER_SUITES,
+        });
+        return new SecureChannelCredentialsImpl(secureContext, verifyOptions !== null && verifyOptions !== void 0 ? verifyOptions : {});
+    }
+    /**
+     * Return a new ChannelCredentials instance with credentials created using
+     * the provided secureContext. The resulting instances can be used to
+     * construct a Channel that communicates over TLS. gRPC will not override
+     * anything in the provided secureContext, so the environment variables
+     * GRPC_SSL_CIPHER_SUITES and GRPC_DEFAULT_SSL_ROOTS_FILE_PATH will
+     * not be applied.
+     * @param secureContext The return value of tls.createSecureContext()
+     * @param verifyOptions Additional options to modify certificate verification
+     */
+    static createFromSecureContext(secureContext, verifyOptions) {
+        return new SecureChannelCredentialsImpl(secureContext, verifyOptions !== null && verifyOptions !== void 0 ? verifyOptions : {});
+    }
+    /**
+     * Return a new ChannelCredentials instance with no credentials.
+     */
+    static createInsecure() {
+        return new InsecureChannelCredentialsImpl();
+    }
+}
+exports.ChannelCredentials = ChannelCredentials;
+class InsecureChannelCredentialsImpl extends ChannelCredentials {
+    constructor(callCredentials) {
+        super(callCredentials);
+    }
+    compose(callCredentials) {
+        throw new Error('Cannot compose insecure credentials');
+    }
+    _getConnectionOptions() {
+        return null;
+    }
+    _isSecure() {
+        return false;
+    }
+    _equals(other) {
+        return other instanceof InsecureChannelCredentialsImpl;
+    }
+}
+class SecureChannelCredentialsImpl extends ChannelCredentials {
+    constructor(secureContext, verifyOptions) {
+        super();
+        this.secureContext = secureContext;
+        this.verifyOptions = verifyOptions;
+        this.connectionOptions = {
+            secureContext
+        };
+        // Node asserts that this option is a function, so we cannot pass undefined
+        if (verifyOptions === null || verifyOptions === void 0 ? void 0 : verifyOptions.checkServerIdentity) {
+            this.connectionOptions.checkServerIdentity = verifyOptions.checkServerIdentity;
+        }
+    }
+    compose(callCredentials) {
+        const combinedCallCredentials = this.callCredentials.compose(callCredentials);
+        return new ComposedChannelCredentialsImpl(this, combinedCallCredentials);
+    }
+    _getConnectionOptions() {
+        // Copy to prevent callers from mutating this.connectionOptions
+        return Object.assign({}, this.connectionOptions);
+    }
+    _isSecure() {
+        return true;
+    }
+    _equals(other) {
+        if (this === other) {
+            return true;
+        }
+        if (other instanceof SecureChannelCredentialsImpl) {
+            return (this.secureContext === other.secureContext &&
+                this.verifyOptions.checkServerIdentity === other.verifyOptions.checkServerIdentity);
+        }
+        else {
+            return false;
+        }
+    }
+}
+class ComposedChannelCredentialsImpl extends ChannelCredentials {
+    constructor(channelCredentials, callCreds) {
+        super(callCreds);
+        this.channelCredentials = channelCredentials;
+    }
+    compose(callCredentials) {
+        const combinedCallCredentials = this.callCredentials.compose(callCredentials);
+        return new ComposedChannelCredentialsImpl(this.channelCredentials, combinedCallCredentials);
+    }
+    _getConnectionOptions() {
+        return this.channelCredentials._getConnectionOptions();
+    }
+    _isSecure() {
+        return true;
+    }
+    _equals(other) {
+        if (this === other) {
+            return true;
+        }
+        if (other instanceof ComposedChannelCredentialsImpl) {
+            return (this.channelCredentials._equals(other.channelCredentials) &&
+                this.callCredentials._equals(other.callCredentials));
+        }
+        else {
+            return false;
+        }
+    }
+}
+//# sourceMappingURL=channel-credentials.js.map

node_modules/@grpc/grpc-js/build/src/channel-credentials.js.map

@@ -0,0 +1 @@
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node_modules/@grpc/grpc-js/build/src/channel-options.d.ts

@@ -0,0 +1,53 @@
+import { CompressionAlgorithms } from './compression-algorithms';
+/**
+ * An interface that contains options used when initializing a Channel instance.
+ */
+export interface ChannelOptions {
+    'grpc.ssl_target_name_override'?: string;
+    'grpc.primary_user_agent'?: string;
+    'grpc.secondary_user_agent'?: string;
+    'grpc.default_authority'?: string;
+    'grpc.keepalive_time_ms'?: number;
+    'grpc.keepalive_timeout_ms'?: number;
+    'grpc.keepalive_permit_without_calls'?: number;
+    'grpc.service_config'?: string;
+    'grpc.max_concurrent_streams'?: number;
+    'grpc.initial_reconnect_backoff_ms'?: number;
+    'grpc.max_reconnect_backoff_ms'?: number;
+    'grpc.use_local_subchannel_pool'?: number;
+    'grpc.max_send_message_length'?: number;
+    'grpc.max_receive_message_length'?: number;
+    'grpc.enable_http_proxy'?: number;
+    'grpc.http_connect_target'?: string;
+    'grpc.http_connect_creds'?: string;
+    'grpc.default_compression_algorithm'?: CompressionAlgorithms;
+    'grpc.enable_channelz'?: number;
+    'grpc.dns_min_time_between_resolutions_ms'?: number;
+    'grpc-node.max_session_memory'?: number;
+    [key: string]: any;
+}
+/**
+ * This is for checking provided options at runtime. This is an object for
+ * easier membership checking.
+ */
+export declare const recognizedOptions: {
+    'grpc.ssl_target_name_override': boolean;
+    'grpc.primary_user_agent': boolean;
+    'grpc.secondary_user_agent': boolean;
+    'grpc.default_authority': boolean;
+    'grpc.keepalive_time_ms': boolean;
+    'grpc.keepalive_timeout_ms': boolean;
+    'grpc.keepalive_permit_without_calls': boolean;
+    'grpc.service_config': boolean;
+    'grpc.max_concurrent_streams': boolean;
+    'grpc.initial_reconnect_backoff_ms': boolean;
+    'grpc.max_reconnect_backoff_ms': boolean;
+    'grpc.use_local_subchannel_pool': boolean;
+    'grpc.max_send_message_length': boolean;
+    'grpc.max_receive_message_length': boolean;
+    'grpc.enable_http_proxy': boolean;
+    'grpc.enable_channelz': boolean;
+    'grpc.dns_min_time_between_resolutions_ms': boolean;
+    'grpc-node.max_session_memory': boolean;
+};
+export declare function channelOptionsEqual(options1: ChannelOptions, options2: ChannelOptions): boolean;

node_modules/@grpc/grpc-js/build/src/channel-options.js

@@ -0,0 +1,61 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.channelOptionsEqual = exports.recognizedOptions = void 0;
+/**
+ * This is for checking provided options at runtime. This is an object for
+ * easier membership checking.
+ */
+exports.recognizedOptions = {
+    'grpc.ssl_target_name_override': true,
+    'grpc.primary_user_agent': true,
+    'grpc.secondary_user_agent': true,
+    'grpc.default_authority': true,
+    'grpc.keepalive_time_ms': true,
+    'grpc.keepalive_timeout_ms': true,
+    'grpc.keepalive_permit_without_calls': true,
+    'grpc.service_config': true,
+    'grpc.max_concurrent_streams': true,
+    'grpc.initial_reconnect_backoff_ms': true,
+    'grpc.max_reconnect_backoff_ms': true,
+    'grpc.use_local_subchannel_pool': true,
+    'grpc.max_send_message_length': true,
+    'grpc.max_receive_message_length': true,
+    'grpc.enable_http_proxy': true,
+    'grpc.enable_channelz': true,
+    'grpc.dns_min_time_between_resolutions_ms': true,
+    'grpc-node.max_session_memory': true,
+};
+function channelOptionsEqual(options1, options2) {
+    const keys1 = Object.keys(options1).sort();
+    const keys2 = Object.keys(options2).sort();
+    if (keys1.length !== keys2.length) {
+        return false;
+    }
+    for (let i = 0; i < keys1.length; i += 1) {
+        if (keys1[i] !== keys2[i]) {
+            return false;
+        }
+        if (options1[keys1[i]] !== options2[keys2[i]]) {
+            return false;
+        }
+    }
+    return true;
+}
+exports.channelOptionsEqual = channelOptionsEqual;
+//# sourceMappingURL=channel-options.js.map

node_modules/@grpc/grpc-js/build/src/channel-options.js.map

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node_modules/@grpc/grpc-js/build/src/channel.d.ts

@@ -0,0 +1,131 @@
+import { Deadline, Call, Http2CallStream } from './call-stream';
+import { ChannelCredentials } from './channel-credentials';
+import { ChannelOptions } from './channel-options';
+import { Metadata } from './metadata';
+import { ServerSurfaceCall } from './server-call';
+import { ConnectivityState } from './connectivity-state';
+import { ChannelRef } from './channelz';
+/**
+ * An interface that represents a communication channel to a server specified
+ * by a given address.
+ */
+export interface Channel {
+    /**
+     * Close the channel. This has the same functionality as the existing
+     * grpc.Client.prototype.close
+     */
+    close(): void;
+    /**
+     * Return the target that this channel connects to
+     */
+    getTarget(): string;
+    /**
+     * Get the channel's current connectivity state. This method is here mainly
+     * because it is in the existing internal Channel class, and there isn't
+     * another good place to put it.
+     * @param tryToConnect If true, the channel will start connecting if it is
+     *     idle. Otherwise, idle channels will only start connecting when a
+     *     call starts.
+     */
+    getConnectivityState(tryToConnect: boolean): ConnectivityState;
+    /**
+     * Watch for connectivity state changes. This is also here mainly because
+     * it is in the existing external Channel class.
+     * @param currentState The state to watch for transitions from. This should
+     *     always be populated by calling getConnectivityState immediately
+     *     before.
+     * @param deadline A deadline for waiting for a state change
+     * @param callback Called with no error when a state change, or with an
+     *     error if the deadline passes without a state change.
+     */
+    watchConnectivityState(currentState: ConnectivityState, deadline: Date | number, callback: (error?: Error) => void): void;
+    /**
+     * Get the channelz reference object for this channel. A request to the
+     * channelz service for the id in this object will provide information
+     * about this channel.
+     */
+    getChannelzRef(): ChannelRef;
+    /**
+     * Create a call object. Call is an opaque type that is used by the Client
+     * class. This function is called by the gRPC library when starting a
+     * request. Implementers should return an instance of Call that is returned
+     * from calling createCall on an instance of the provided Channel class.
+     * @param method The full method string to request.
+     * @param deadline The call deadline
+     * @param host A host string override for making the request
+     * @param parentCall A server call to propagate some information from
+     * @param propagateFlags A bitwise combination of elements of grpc.propagate
+     *     that indicates what information to propagate from parentCall.
+     */
+    createCall(method: string, deadline: Deadline, host: string | null | undefined, parentCall: ServerSurfaceCall | null, propagateFlags: number | null | undefined): Call;
+}
+export declare class ChannelImplementation implements Channel {
+    private readonly credentials;
+    private readonly options;
+    private resolvingLoadBalancer;
+    private subchannelPool;
+    private connectivityState;
+    private currentPicker;
+    /**
+     * Calls queued up to get a call config. Should only be populated before the
+     * first time the resolver returns a result, which includes the ConfigSelector.
+     */
+    private configSelectionQueue;
+    private pickQueue;
+    private connectivityStateWatchers;
+    private defaultAuthority;
+    private filterStackFactory;
+    private target;
+    /**
+     * This timer does not do anything on its own. Its purpose is to hold the
+     * event loop open while there are any pending calls for the channel that
+     * have not yet been assigned to specific subchannels. In other words,
+     * the invariant is that callRefTimer is reffed if and only if pickQueue
+     * is non-empty.
+     */
+    private callRefTimer;
+    private configSelector;
+    /**
+     * This is the error from the name resolver if it failed most recently. It
+     * is only used to end calls that start while there is no config selector
+     * and the name resolver is in backoff, so it should be nulled if
+     * configSelector becomes set or the channel state becomes anything other
+     * than TRANSIENT_FAILURE.
+     */
+    private currentResolutionError;
+    private readonly channelzEnabled;
+    private originalTarget;
+    private channelzRef;
+    private channelzTrace;
+    private callTracker;
+    private childrenTracker;
+    constructor(target: string, credentials: ChannelCredentials, options: ChannelOptions);
+    private getChannelzInfo;
+    private trace;
+    private callRefTimerRef;
+    private callRefTimerUnref;
+    private pushPick;
+    /**
+     * Check the picker output for the given call and corresponding metadata,
+     * and take any relevant actions. Should not be called while iterating
+     * over pickQueue.
+     * @param callStream
+     * @param callMetadata
+     */
+    private tryPick;
+    private removeConnectivityStateWatcher;
+    private updateState;
+    private tryGetConfig;
+    _startCallStream(stream: Http2CallStream, metadata: Metadata): void;
+    close(): void;
+    getTarget(): string;
+    getConnectivityState(tryToConnect: boolean): ConnectivityState;
+    watchConnectivityState(currentState: ConnectivityState, deadline: Date | number, callback: (error?: Error) => void): void;
+    /**
+     * Get the channelz reference object for this channel. The returned value is
+     * garbage if channelz is disabled for this channel.
+     * @returns
+     */
+    getChannelzRef(): ChannelRef;
+    createCall(method: string, deadline: Deadline, host: string | null | undefined, parentCall: ServerSurfaceCall | null, propagateFlags: number | null | undefined): Call;
+}

node_modules/@grpc/grpc-js/build/src/channel.js

@@ -0,0 +1,557 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ChannelImplementation = void 0;
+const call_stream_1 = require("./call-stream");
+const channel_credentials_1 = require("./channel-credentials");
+const resolving_load_balancer_1 = require("./resolving-load-balancer");
+const subchannel_pool_1 = require("./subchannel-pool");
+const picker_1 = require("./picker");
+const constants_1 = require("./constants");
+const filter_stack_1 = require("./filter-stack");
+const call_credentials_filter_1 = require("./call-credentials-filter");
+const deadline_filter_1 = require("./deadline-filter");
+const compression_filter_1 = require("./compression-filter");
+const resolver_1 = require("./resolver");
+const logging_1 = require("./logging");
+const max_message_size_filter_1 = require("./max-message-size-filter");
+const http_proxy_1 = require("./http_proxy");
+const uri_parser_1 = require("./uri-parser");
+const connectivity_state_1 = require("./connectivity-state");
+const channelz_1 = require("./channelz");
+/**
+ * See https://nodejs.org/api/timers.html#timers_setinterval_callback_delay_args
+ */
+const MAX_TIMEOUT_TIME = 2147483647;
+let nextCallNumber = 0;
+function getNewCallNumber() {
+    const callNumber = nextCallNumber;
+    nextCallNumber += 1;
+    if (nextCallNumber >= Number.MAX_SAFE_INTEGER) {
+        nextCallNumber = 0;
+    }
+    return callNumber;
+}
+class ChannelImplementation {
+    constructor(target, credentials, options) {
+        var _a, _b, _c, _d;
+        this.credentials = credentials;
+        this.options = options;
+        this.connectivityState = connectivity_state_1.ConnectivityState.IDLE;
+        this.currentPicker = new picker_1.UnavailablePicker();
+        /**
+         * Calls queued up to get a call config. Should only be populated before the
+         * first time the resolver returns a result, which includes the ConfigSelector.
+         */
+        this.configSelectionQueue = [];
+        this.pickQueue = [];
+        this.connectivityStateWatchers = [];
+        this.configSelector = null;
+        /**
+         * This is the error from the name resolver if it failed most recently. It
+         * is only used to end calls that start while there is no config selector
+         * and the name resolver is in backoff, so it should be nulled if
+         * configSelector becomes set or the channel state becomes anything other
+         * than TRANSIENT_FAILURE.
+         */
+        this.currentResolutionError = null;
+        // Channelz info
+        this.channelzEnabled = true;
+        this.callTracker = new channelz_1.ChannelzCallTracker();
+        this.childrenTracker = new channelz_1.ChannelzChildrenTracker();
+        if (typeof target !== 'string') {
+            throw new TypeError('Channel target must be a string');
+        }
+        if (!(credentials instanceof channel_credentials_1.ChannelCredentials)) {
+            throw new TypeError('Channel credentials must be a ChannelCredentials object');
+        }
+        if (options) {
+            if (typeof options !== 'object') {
+                throw new TypeError('Channel options must be an object');
+            }
+        }
+        this.originalTarget = target;
+        const originalTargetUri = uri_parser_1.parseUri(target);
+        if (originalTargetUri === null) {
+            throw new Error(`Could not parse target name "${target}"`);
+        }
+        /* This ensures that the target has a scheme that is registered with the
+         * resolver */
+        const defaultSchemeMapResult = resolver_1.mapUriDefaultScheme(originalTargetUri);
+        if (defaultSchemeMapResult === null) {
+            throw new Error(`Could not find a default scheme for target name "${target}"`);
+        }
+        this.callRefTimer = setInterval(() => { }, MAX_TIMEOUT_TIME);
+        (_b = (_a = this.callRefTimer).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
+        if (this.options['grpc.enable_channelz'] === 0) {
+            this.channelzEnabled = false;
+        }
+        this.channelzTrace = new channelz_1.ChannelzTrace();
+        this.channelzRef = channelz_1.registerChannelzChannel(target, () => this.getChannelzInfo(), this.channelzEnabled);
+        if (this.channelzEnabled) {
+            this.channelzTrace.addTrace('CT_INFO', 'Channel created');
+        }
+        if (this.options['grpc.default_authority']) {
+            this.defaultAuthority = this.options['grpc.default_authority'];
+        }
+        else {
+            this.defaultAuthority = resolver_1.getDefaultAuthority(defaultSchemeMapResult);
+        }
+        const proxyMapResult = http_proxy_1.mapProxyName(defaultSchemeMapResult, options);
+        this.target = proxyMapResult.target;
+        this.options = Object.assign({}, this.options, proxyMapResult.extraOptions);
+        /* The global boolean parameter to getSubchannelPool has the inverse meaning to what
+         * the grpc.use_local_subchannel_pool channel option means. */
+        this.subchannelPool = subchannel_pool_1.getSubchannelPool(((_c = options['grpc.use_local_subchannel_pool']) !== null && _c !== void 0 ? _c : 0) === 0);
+        const channelControlHelper = {
+            createSubchannel: (subchannelAddress, subchannelArgs) => {
+                const subchannel = this.subchannelPool.getOrCreateSubchannel(this.target, subchannelAddress, Object.assign({}, this.options, subchannelArgs), this.credentials);
+                if (this.channelzEnabled) {
+                    this.channelzTrace.addTrace('CT_INFO', 'Created subchannel or used existing subchannel', subchannel.getChannelzRef());
+                }
+                return subchannel;
+            },
+            updateState: (connectivityState, picker) => {
+                this.currentPicker = picker;
+                const queueCopy = this.pickQueue.slice();
+                this.pickQueue = [];
+                this.callRefTimerUnref();
+                for (const { callStream, callMetadata, callConfig, dynamicFilters } of queueCopy) {
+                    this.tryPick(callStream, callMetadata, callConfig, dynamicFilters);
+                }
+                this.updateState(connectivityState);
+            },
+            requestReresolution: () => {
+                // This should never be called.
+                throw new Error('Resolving load balancer should never call requestReresolution');
+            },
+            addChannelzChild: (child) => {
+                if (this.channelzEnabled) {
+                    this.childrenTracker.refChild(child);
+                }
+            },
+            removeChannelzChild: (child) => {
+                if (this.channelzEnabled) {
+                    this.childrenTracker.unrefChild(child);
+                }
+            }
+        };
+        this.resolvingLoadBalancer = new resolving_load_balancer_1.ResolvingLoadBalancer(this.target, channelControlHelper, options, (configSelector) => {
+            if (this.channelzEnabled) {
+                this.channelzTrace.addTrace('CT_INFO', 'Address resolution succeeded');
+            }
+            this.configSelector = configSelector;
+            this.currentResolutionError = null;
+            /* We process the queue asynchronously to ensure that the corresponding
+             * load balancer update has completed. */
+            process.nextTick(() => {
+                const localQueue = this.configSelectionQueue;
+                this.configSelectionQueue = [];
+                this.callRefTimerUnref();
+                for (const { callStream, callMetadata } of localQueue) {
+                    this.tryGetConfig(callStream, callMetadata);
+                }
+                this.configSelectionQueue = [];
+            });
+        }, (status) => {
+            if (this.channelzEnabled) {
+                this.channelzTrace.addTrace('CT_WARNING', 'Address resolution failed with code ' + status.code + ' and details "' + status.details + '"');
+            }
+            if (this.configSelectionQueue.length > 0) {
+                this.trace('Name resolution failed with calls queued for config selection');
+            }
+            if (this.configSelector === null) {
+                this.currentResolutionError = status;
+            }
+            const localQueue = this.configSelectionQueue;
+            this.configSelectionQueue = [];
+            this.callRefTimerUnref();
+            for (const { callStream, callMetadata } of localQueue) {
+                if (callMetadata.getOptions().waitForReady) {
+                    this.callRefTimerRef();
+                    this.configSelectionQueue.push({ callStream, callMetadata });
+                }
+                else {
+                    callStream.cancelWithStatus(status.code, status.details);
+                }
+            }
+        });
+        this.filterStackFactory = new filter_stack_1.FilterStackFactory([
+            new call_credentials_filter_1.CallCredentialsFilterFactory(this),
+            new deadline_filter_1.DeadlineFilterFactory(this),
+            new max_message_size_filter_1.MaxMessageSizeFilterFactory(this.options),
+            new compression_filter_1.CompressionFilterFactory(this, this.options),
+        ]);
+        this.trace('Channel constructed with options ' + JSON.stringify(options, undefined, 2));
+        const error = new Error();
+        logging_1.trace(constants_1.LogVerbosity.DEBUG, 'channel_stacktrace', '(' + this.channelzRef.id + ') ' + 'Channel constructed \n' + ((_d = error.stack) === null || _d === void 0 ? void 0 : _d.substring(error.stack.indexOf('\n') + 1)));
+    }
+    getChannelzInfo() {
+        return {
+            target: this.originalTarget,
+            state: this.connectivityState,
+            trace: this.channelzTrace,
+            callTracker: this.callTracker,
+            children: this.childrenTracker.getChildLists()
+        };
+    }
+    trace(text, verbosityOverride) {
+        logging_1.trace(verbosityOverride !== null && verbosityOverride !== void 0 ? verbosityOverride : constants_1.LogVerbosity.DEBUG, 'channel', '(' + this.channelzRef.id + ') ' + uri_parser_1.uriToString(this.target) + ' ' + text);
+    }
+    callRefTimerRef() {
+        var _a, _b, _c, _d;
+        // If the hasRef function does not exist, always run the code
+        if (!((_b = (_a = this.callRefTimer).hasRef) === null || _b === void 0 ? void 0 : _b.call(_a))) {
+            this.trace('callRefTimer.ref | configSelectionQueue.length=' +
+                this.configSelectionQueue.length +
+                ' pickQueue.length=' +
+                this.pickQueue.length);
+            (_d = (_c = this.callRefTimer).ref) === null || _d === void 0 ? void 0 : _d.call(_c);
+        }
+    }
+    callRefTimerUnref() {
+        var _a, _b;
+        // If the hasRef function does not exist, always run the code
+        if (!this.callRefTimer.hasRef || this.callRefTimer.hasRef()) {
+            this.trace('callRefTimer.unref | configSelectionQueue.length=' +
+                this.configSelectionQueue.length +
+                ' pickQueue.length=' +
+                this.pickQueue.length);
+            (_b = (_a = this.callRefTimer).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
+        }
+    }
+    pushPick(callStream, callMetadata, callConfig, dynamicFilters) {
+        this.pickQueue.push({ callStream, callMetadata, callConfig, dynamicFilters });
+        this.callRefTimerRef();
+    }
+    /**
+     * Check the picker output for the given call and corresponding metadata,
+     * and take any relevant actions. Should not be called while iterating
+     * over pickQueue.
+     * @param callStream
+     * @param callMetadata
+     */
+    tryPick(callStream, callMetadata, callConfig, dynamicFilters) {
+        var _a, _b;
+        const pickResult = this.currentPicker.pick({
+            metadata: callMetadata,
+            extraPickInfo: callConfig.pickInformation,
+        });
+        const subchannelString = pickResult.subchannel ?
+            '(' + pickResult.subchannel.getChannelzRef().id + ') ' + pickResult.subchannel.getAddress() :
+            '' + pickResult.subchannel;
+        this.trace('Pick result for call [' +
+            callStream.getCallNumber() +
+            ']: ' +
+            picker_1.PickResultType[pickResult.pickResultType] +
+            ' subchannel: ' +
+            subchannelString +
+            ' status: ' + ((_a = pickResult.status) === null || _a === void 0 ? void 0 : _a.code) +
+            ' ' + ((_b = pickResult.status) === null || _b === void 0 ? void 0 : _b.details));
+        switch (pickResult.pickResultType) {
+            case picker_1.PickResultType.COMPLETE:
+                if (pickResult.subchannel === null) {
+                    callStream.cancelWithStatus(constants_1.Status.UNAVAILABLE, 'Request dropped by load balancing policy');
+                    // End the call with an error
+                }
+                else {
+                    /* If the subchannel is not in the READY state, that indicates a bug
+                     * somewhere in the load balancer or picker. So, we log an error and
+                     * queue the pick to be tried again later. */
+                    if (pickResult.subchannel.getConnectivityState() !==
+                        connectivity_state_1.ConnectivityState.READY) {
+                        logging_1.log(constants_1.LogVerbosity.ERROR, 'Error: COMPLETE pick result subchannel ' +
+                            subchannelString +
+                            ' has state ' +
+                            connectivity_state_1.ConnectivityState[pickResult.subchannel.getConnectivityState()]);
+                        this.pushPick(callStream, callMetadata, callConfig, dynamicFilters);
+                        break;
+                    }
+                    /* We need to clone the callMetadata here because the transparent
+                     * retry code in the promise resolution handler use the same
+                     * callMetadata object, so it needs to stay unmodified */
+                    callStream.filterStack
+                        .sendMetadata(Promise.resolve(callMetadata.clone()))
+                        .then((finalMetadata) => {
+                        var _a, _b, _c;
+                        const subchannelState = pickResult.subchannel.getConnectivityState();
+                        if (subchannelState === connectivity_state_1.ConnectivityState.READY) {
+                            try {
+                                const pickExtraFilters = pickResult.extraFilterFactories.map(factory => factory.createFilter(callStream));
+                                (_a = pickResult.subchannel) === null || _a === void 0 ? void 0 : _a.getRealSubchannel().startCallStream(finalMetadata, callStream, [...dynamicFilters, ...pickExtraFilters]);
+                                /* If we reach this point, the call stream has started
+                                 * successfully */
+                                (_b = callConfig.onCommitted) === null || _b === void 0 ? void 0 : _b.call(callConfig);
+                                (_c = pickResult.onCallStarted) === null || _c === void 0 ? void 0 : _c.call(pickResult);
+                            }
+                            catch (error) {
+                                const errorCode = error.code;
+                                if (errorCode === 'ERR_HTTP2_GOAWAY_SESSION' ||
+                                    errorCode === 'ERR_HTTP2_INVALID_SESSION') {
+                                    /* An error here indicates that something went wrong with
+                                     * the picked subchannel's http2 stream right before we
+                                     * tried to start the stream. We are handling a promise
+                                     * result here, so this is asynchronous with respect to the
+                                     * original tryPick call, so calling it again is not
+                                     * recursive. We call tryPick immediately instead of
+                                     * queueing this pick again because handling the queue is
+                                     * triggered by state changes, and we want to immediately
+                                     * check if the state has already changed since the
+                                     * previous tryPick call. We do this instead of cancelling
+                                     * the stream because the correct behavior may be
+                                     * re-queueing instead, based on the logic in the rest of
+                                     * tryPick */
+                                    this.trace('Failed to start call on picked subchannel ' +
+                                        subchannelString +
+                                        ' with error ' +
+                                        error.message +
+                                        '. Retrying pick', constants_1.LogVerbosity.INFO);
+                                    this.tryPick(callStream, callMetadata, callConfig, dynamicFilters);
+                                }
+                                else {
+                                    this.trace('Failed to start call on picked subchanel ' +
+                                        subchannelString +
+                                        ' with error ' +
+                                        error.message +
+                                        '. Ending call', constants_1.LogVerbosity.INFO);
+                                    callStream.cancelWithStatus(constants_1.Status.INTERNAL, `Failed to start HTTP/2 stream with error: ${error.message}`);
+                                }
+                            }
+                        }
+                        else {
+                            /* The logic for doing this here is the same as in the catch
+                             * block above */
+                            this.trace('Picked subchannel ' +
+                                subchannelString +
+                                ' has state ' +
+                                connectivity_state_1.ConnectivityState[subchannelState] +
+                                ' after metadata filters. Retrying pick', constants_1.LogVerbosity.INFO);
+                            this.tryPick(callStream, callMetadata, callConfig, dynamicFilters);
+                        }
+                    }, (error) => {
+                        // We assume the error code isn't 0 (Status.OK)
+                        callStream.cancelWithStatus(typeof error.code === 'number' ? error.code : constants_1.Status.UNKNOWN, `Getting metadata from plugin failed with error: ${error.message}`);
+                    });
+                }
+                break;
+            case picker_1.PickResultType.QUEUE:
+                this.pushPick(callStream, callMetadata, callConfig, dynamicFilters);
+                break;
+            case picker_1.PickResultType.TRANSIENT_FAILURE:
+                if (callMetadata.getOptions().waitForReady) {
+                    this.pushPick(callStream, callMetadata, callConfig, dynamicFilters);
+                }
+                else {
+                    callStream.cancelWithStatus(pickResult.status.code, pickResult.status.details);
+                }
+                break;
+            case picker_1.PickResultType.DROP:
+                callStream.cancelWithStatus(pickResult.status.code, pickResult.status.details);
+                break;
+            default:
+                throw new Error(`Invalid state: unknown pickResultType ${pickResult.pickResultType}`);
+        }
+    }
+    removeConnectivityStateWatcher(watcherObject) {
+        const watcherIndex = this.connectivityStateWatchers.findIndex((value) => value === watcherObject);
+        if (watcherIndex >= 0) {
+            this.connectivityStateWatchers.splice(watcherIndex, 1);
+        }
+    }
+    updateState(newState) {
+        logging_1.trace(constants_1.LogVerbosity.DEBUG, 'connectivity_state', '(' + this.channelzRef.id + ') ' +
+            uri_parser_1.uriToString(this.target) +
+            ' ' +
+            connectivity_state_1.ConnectivityState[this.connectivityState] +
+            ' -> ' +
+            connectivity_state_1.ConnectivityState[newState]);
+        if (this.channelzEnabled) {
+            this.channelzTrace.addTrace('CT_INFO', connectivity_state_1.ConnectivityState[this.connectivityState] + ' -> ' + connectivity_state_1.ConnectivityState[newState]);
+        }
+        this.connectivityState = newState;
+        const watchersCopy = this.connectivityStateWatchers.slice();
+        for (const watcherObject of watchersCopy) {
+            if (newState !== watcherObject.currentState) {
+                if (watcherObject.timer) {
+                    clearTimeout(watcherObject.timer);
+                }
+                this.removeConnectivityStateWatcher(watcherObject);
+                watcherObject.callback();
+            }
+        }
+        if (newState !== connectivity_state_1.ConnectivityState.TRANSIENT_FAILURE) {
+            this.currentResolutionError = null;
+        }
+    }
+    tryGetConfig(stream, metadata) {
+        if (stream.getStatus() !== null) {
+            /* If the stream has a status, it has already finished and we don't need
+             * to take any more actions on it. */
+            return;
+        }
+        if (this.configSelector === null) {
+            /* This branch will only be taken at the beginning of the channel's life,
+             * before the resolver ever returns a result. So, the
+             * ResolvingLoadBalancer may be idle and if so it needs to be kicked
+             * because it now has a pending request. */
+            this.resolvingLoadBalancer.exitIdle();
+            if (this.currentResolutionError && !metadata.getOptions().waitForReady) {
+                stream.cancelWithStatus(this.currentResolutionError.code, this.currentResolutionError.details);
+            }
+            else {
+                this.configSelectionQueue.push({
+                    callStream: stream,
+                    callMetadata: metadata,
+                });
+                this.callRefTimerRef();
+            }
+        }
+        else {
+            const callConfig = this.configSelector(stream.getMethod(), metadata);
+            if (callConfig.status === constants_1.Status.OK) {
+                if (callConfig.methodConfig.timeout) {
+                    const deadline = new Date();
+                    deadline.setSeconds(deadline.getSeconds() + callConfig.methodConfig.timeout.seconds);
+                    deadline.setMilliseconds(deadline.getMilliseconds() +
+                        callConfig.methodConfig.timeout.nanos / 1000000);
+                    stream.setConfigDeadline(deadline);
+                    // Refreshing the filters makes the deadline filter pick up the new deadline
+                    stream.filterStack.refresh();
+                }
+                if (callConfig.dynamicFilterFactories.length > 0) {
+                    /* These dynamicFilters are the mechanism for implementing gRFC A39:
+                     * https://github.com/grpc/proposal/blob/master/A39-xds-http-filters.md
+                     * We run them here instead of with the rest of the filters because
+                     * that spec says "the xDS HTTP filters will run in between name
+                     * resolution and load balancing".
+                     *
+                     * We use the filter stack here to simplify the multi-filter async
+                     * waterfall logic, but we pass along the underlying list of filters
+                     * to avoid having nested filter stacks when combining it with the
+                     * original filter stack. We do not pass along the original filter
+                     * factory list because these filters may need to persist data
+                     * between sending headers and other operations. */
+                    const dynamicFilterStackFactory = new filter_stack_1.FilterStackFactory(callConfig.dynamicFilterFactories);
+                    const dynamicFilterStack = dynamicFilterStackFactory.createFilter(stream);
+                    dynamicFilterStack.sendMetadata(Promise.resolve(metadata)).then(filteredMetadata => {
+                        this.tryPick(stream, filteredMetadata, callConfig, dynamicFilterStack.getFilters());
+                    });
+                }
+                else {
+                    this.tryPick(stream, metadata, callConfig, []);
+                }
+            }
+            else {
+                stream.cancelWithStatus(callConfig.status, 'Failed to route call to method ' + stream.getMethod());
+            }
+        }
+    }
+    _startCallStream(stream, metadata) {
+        this.tryGetConfig(stream, metadata.clone());
+    }
+    close() {
+        this.resolvingLoadBalancer.destroy();
+        this.updateState(connectivity_state_1.ConnectivityState.SHUTDOWN);
+        clearInterval(this.callRefTimer);
+        if (this.channelzEnabled) {
+            channelz_1.unregisterChannelzRef(this.channelzRef);
+        }
+        this.subchannelPool.unrefUnusedSubchannels();
+    }
+    getTarget() {
+        return uri_parser_1.uriToString(this.target);
+    }
+    getConnectivityState(tryToConnect) {
+        const connectivityState = this.connectivityState;
+        if (tryToConnect) {
+            this.resolvingLoadBalancer.exitIdle();
+        }
+        return connectivityState;
+    }
+    watchConnectivityState(currentState, deadline, callback) {
+        if (this.connectivityState === connectivity_state_1.ConnectivityState.SHUTDOWN) {
+            throw new Error('Channel has been shut down');
+        }
+        let timer = null;
+        if (deadline !== Infinity) {
+            const deadlineDate = deadline instanceof Date ? deadline : new Date(deadline);
+            const now = new Date();
+            if (deadline === -Infinity || deadlineDate <= now) {
+                process.nextTick(callback, new Error('Deadline passed without connectivity state change'));
+                return;
+            }
+            timer = setTimeout(() => {
+                this.removeConnectivityStateWatcher(watcherObject);
+                callback(new Error('Deadline passed without connectivity state change'));
+            }, deadlineDate.getTime() - now.getTime());
+        }
+        const watcherObject = {
+            currentState,
+            callback,
+            timer,
+        };
+        this.connectivityStateWatchers.push(watcherObject);
+    }
+    /**
+     * Get the channelz reference object for this channel. The returned value is
+     * garbage if channelz is disabled for this channel.
+     * @returns
+     */
+    getChannelzRef() {
+        return this.channelzRef;
+    }
+    createCall(method, deadline, host, parentCall, propagateFlags) {
+        if (typeof method !== 'string') {
+            throw new TypeError('Channel#createCall: method must be a string');
+        }
+        if (!(typeof deadline === 'number' || deadline instanceof Date)) {
+            throw new TypeError('Channel#createCall: deadline must be a number or Date');
+        }
+        if (this.connectivityState === connectivity_state_1.ConnectivityState.SHUTDOWN) {
+            throw new Error('Channel has been shut down');
+        }
+        const callNumber = getNewCallNumber();
+        this.trace('createCall [' +
+            callNumber +
+            '] method="' +
+            method +
+            '", deadline=' +
+            deadline);
+        const finalOptions = {
+            deadline: deadline,
+            flags: propagateFlags !== null && propagateFlags !== void 0 ? propagateFlags : constants_1.Propagate.DEFAULTS,
+            host: host !== null && host !== void 0 ? host : this.defaultAuthority,
+            parentCall: parentCall,
+        };
+        const stream = new call_stream_1.Http2CallStream(method, this, finalOptions, this.filterStackFactory, this.credentials._getCallCredentials(), callNumber);
+        if (this.channelzEnabled) {
+            this.callTracker.addCallStarted();
+            stream.addStatusWatcher(status => {
+                if (status.code === constants_1.Status.OK) {
+                    this.callTracker.addCallSucceeded();
+                }
+                else {
+                    this.callTracker.addCallFailed();
+                }
+            });
+        }
+        return stream;
+    }
+}
+exports.ChannelImplementation = ChannelImplementation;
+//# sourceMappingURL=channel.js.map

node_modules/@grpc/grpc-js/build/src/channelz.d.ts

@@ -0,0 +1,110 @@
+/// <reference types="node" />
+import { ConnectivityState } from "./connectivity-state";
+import { ChannelTrace } from "./generated/grpc/channelz/v1/ChannelTrace";
+import { SubchannelAddress } from "./subchannel-address";
+import { ChannelzDefinition, ChannelzHandlers } from "./generated/grpc/channelz/v1/Channelz";
+export declare type TraceSeverity = 'CT_UNKNOWN' | 'CT_INFO' | 'CT_WARNING' | 'CT_ERROR';
+export interface ChannelRef {
+    kind: 'channel';
+    id: number;
+    name: string;
+}
+export interface SubchannelRef {
+    kind: 'subchannel';
+    id: number;
+    name: string;
+}
+export interface ServerRef {
+    kind: 'server';
+    id: number;
+}
+export interface SocketRef {
+    kind: 'socket';
+    id: number;
+    name: string;
+}
+interface TraceEvent {
+    description: string;
+    severity: TraceSeverity;
+    timestamp: Date;
+    childChannel?: ChannelRef;
+    childSubchannel?: SubchannelRef;
+}
+export declare class ChannelzTrace {
+    events: TraceEvent[];
+    creationTimestamp: Date;
+    eventsLogged: number;
+    constructor();
+    addTrace(severity: TraceSeverity, description: string, child?: ChannelRef | SubchannelRef): void;
+    getTraceMessage(): ChannelTrace;
+}
+export declare class ChannelzChildrenTracker {
+    private channelChildren;
+    private subchannelChildren;
+    private socketChildren;
+    refChild(child: ChannelRef | SubchannelRef | SocketRef): void;
+    unrefChild(child: ChannelRef | SubchannelRef | SocketRef): void;
+    getChildLists(): ChannelzChildren;
+}
+export declare class ChannelzCallTracker {
+    callsStarted: number;
+    callsSucceeded: number;
+    callsFailed: number;
+    lastCallStartedTimestamp: Date | null;
+    addCallStarted(): void;
+    addCallSucceeded(): void;
+    addCallFailed(): void;
+}
+export interface ChannelzChildren {
+    channels: ChannelRef[];
+    subchannels: SubchannelRef[];
+    sockets: SocketRef[];
+}
+export interface ChannelInfo {
+    target: string;
+    state: ConnectivityState;
+    trace: ChannelzTrace;
+    callTracker: ChannelzCallTracker;
+    children: ChannelzChildren;
+}
+export interface SubchannelInfo extends ChannelInfo {
+}
+export interface ServerInfo {
+    trace: ChannelzTrace;
+    callTracker: ChannelzCallTracker;
+    listenerChildren: ChannelzChildren;
+    sessionChildren: ChannelzChildren;
+}
+export interface TlsInfo {
+    cipherSuiteStandardName: string | null;
+    cipherSuiteOtherName: string | null;
+    localCertificate: Buffer | null;
+    remoteCertificate: Buffer | null;
+}
+export interface SocketInfo {
+    localAddress: SubchannelAddress | null;
+    remoteAddress: SubchannelAddress | null;
+    security: TlsInfo | null;
+    remoteName: string | null;
+    streamsStarted: number;
+    streamsSucceeded: number;
+    streamsFailed: number;
+    messagesSent: number;
+    messagesReceived: number;
+    keepAlivesSent: number;
+    lastLocalStreamCreatedTimestamp: Date | null;
+    lastRemoteStreamCreatedTimestamp: Date | null;
+    lastMessageSentTimestamp: Date | null;
+    lastMessageReceivedTimestamp: Date | null;
+    localFlowControlWindow: number | null;
+    remoteFlowControlWindow: number | null;
+}
+export declare function registerChannelzChannel(name: string, getInfo: () => ChannelInfo, channelzEnabled: boolean): ChannelRef;
+export declare function registerChannelzSubchannel(name: string, getInfo: () => SubchannelInfo, channelzEnabled: boolean): SubchannelRef;
+export declare function registerChannelzServer(getInfo: () => ServerInfo, channelzEnabled: boolean): ServerRef;
+export declare function registerChannelzSocket(name: string, getInfo: () => SocketInfo, channelzEnabled: boolean): SocketRef;
+export declare function unregisterChannelzRef(ref: ChannelRef | SubchannelRef | ServerRef | SocketRef): void;
+export declare function getChannelzHandlers(): ChannelzHandlers;
+export declare function getChannelzServiceDefinition(): ChannelzDefinition;
+export declare function setup(): void;
+export {};

node_modules/@grpc/grpc-js/build/src/channelz.js

@@ -0,0 +1,610 @@
+"use strict";
+/*
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.setup = exports.getChannelzServiceDefinition = exports.getChannelzHandlers = exports.unregisterChannelzRef = exports.registerChannelzSocket = exports.registerChannelzServer = exports.registerChannelzSubchannel = exports.registerChannelzChannel = exports.ChannelzCallTracker = exports.ChannelzChildrenTracker = exports.ChannelzTrace = void 0;
+const net_1 = require("net");
+const connectivity_state_1 = require("./connectivity-state");
+const constants_1 = require("./constants");
+const subchannel_address_1 = require("./subchannel-address");
+const admin_1 = require("./admin");
+const make_client_1 = require("./make-client");
+function channelRefToMessage(ref) {
+    return {
+        channel_id: ref.id,
+        name: ref.name
+    };
+}
+function subchannelRefToMessage(ref) {
+    return {
+        subchannel_id: ref.id,
+        name: ref.name
+    };
+}
+function serverRefToMessage(ref) {
+    return {
+        server_id: ref.id
+    };
+}
+function socketRefToMessage(ref) {
+    return {
+        socket_id: ref.id,
+        name: ref.name
+    };
+}
+/**
+ * The loose upper bound on the number of events that should be retained in a
+ * trace. This may be exceeded by up to a factor of 2. Arbitrarily chosen as a
+ * number that should be large enough to contain the recent relevant
+ * information, but small enough to not use excessive memory.
+ */
+const TARGET_RETAINED_TRACES = 32;
+class ChannelzTrace {
+    constructor() {
+        this.events = [];
+        this.eventsLogged = 0;
+        this.creationTimestamp = new Date();
+    }
+    addTrace(severity, description, child) {
+        const timestamp = new Date();
+        this.events.push({
+            description: description,
+            severity: severity,
+            timestamp: timestamp,
+            childChannel: (child === null || child === void 0 ? void 0 : child.kind) === 'channel' ? child : undefined,
+            childSubchannel: (child === null || child === void 0 ? void 0 : child.kind) === 'subchannel' ? child : undefined
+        });
+        // Whenever the trace array gets too large, discard the first half
+        if (this.events.length >= TARGET_RETAINED_TRACES * 2) {
+            this.events = this.events.slice(TARGET_RETAINED_TRACES);
+        }
+        this.eventsLogged += 1;
+    }
+    getTraceMessage() {
+        return {
+            creation_timestamp: dateToProtoTimestamp(this.creationTimestamp),
+            num_events_logged: this.eventsLogged,
+            events: this.events.map(event => {
+                return {
+                    description: event.description,
+                    severity: event.severity,
+                    timestamp: dateToProtoTimestamp(event.timestamp),
+                    channel_ref: event.childChannel ? channelRefToMessage(event.childChannel) : null,
+                    subchannel_ref: event.childSubchannel ? subchannelRefToMessage(event.childSubchannel) : null
+                };
+            })
+        };
+    }
+}
+exports.ChannelzTrace = ChannelzTrace;
+class ChannelzChildrenTracker {
+    constructor() {
+        this.channelChildren = new Map();
+        this.subchannelChildren = new Map();
+        this.socketChildren = new Map();
+    }
+    refChild(child) {
+        var _a, _b, _c;
+        switch (child.kind) {
+            case 'channel': {
+                let trackedChild = (_a = this.channelChildren.get(child.id)) !== null && _a !== void 0 ? _a : { ref: child, count: 0 };
+                trackedChild.count += 1;
+                this.channelChildren.set(child.id, trackedChild);
+                break;
+            }
+            case 'subchannel': {
+                let trackedChild = (_b = this.subchannelChildren.get(child.id)) !== null && _b !== void 0 ? _b : { ref: child, count: 0 };
+                trackedChild.count += 1;
+                this.subchannelChildren.set(child.id, trackedChild);
+                break;
+            }
+            case 'socket': {
+                let trackedChild = (_c = this.socketChildren.get(child.id)) !== null && _c !== void 0 ? _c : { ref: child, count: 0 };
+                trackedChild.count += 1;
+                this.socketChildren.set(child.id, trackedChild);
+                break;
+            }
+        }
+    }
+    unrefChild(child) {
+        switch (child.kind) {
+            case 'channel': {
+                let trackedChild = this.channelChildren.get(child.id);
+                if (trackedChild !== undefined) {
+                    trackedChild.count -= 1;
+                    if (trackedChild.count === 0) {
+                        this.channelChildren.delete(child.id);
+                    }
+                    else {
+                        this.channelChildren.set(child.id, trackedChild);
+                    }
+                }
+                break;
+            }
+            case 'subchannel': {
+                let trackedChild = this.subchannelChildren.get(child.id);
+                if (trackedChild !== undefined) {
+                    trackedChild.count -= 1;
+                    if (trackedChild.count === 0) {
+                        this.subchannelChildren.delete(child.id);
+                    }
+                    else {
+                        this.subchannelChildren.set(child.id, trackedChild);
+                    }
+                }
+                break;
+            }
+            case 'socket': {
+                let trackedChild = this.socketChildren.get(child.id);
+                if (trackedChild !== undefined) {
+                    trackedChild.count -= 1;
+                    if (trackedChild.count === 0) {
+                        this.socketChildren.delete(child.id);
+                    }
+                    else {
+                        this.socketChildren.set(child.id, trackedChild);
+                    }
+                }
+                break;
+            }
+        }
+    }
+    getChildLists() {
+        const channels = [];
+        for (const { ref } of this.channelChildren.values()) {
+            channels.push(ref);
+        }
+        const subchannels = [];
+        for (const { ref } of this.subchannelChildren.values()) {
+            subchannels.push(ref);
+        }
+        const sockets = [];
+        for (const { ref } of this.socketChildren.values()) {
+            sockets.push(ref);
+        }
+        return { channels, subchannels, sockets };
+    }
+}
+exports.ChannelzChildrenTracker = ChannelzChildrenTracker;
+class ChannelzCallTracker {
+    constructor() {
+        this.callsStarted = 0;
+        this.callsSucceeded = 0;
+        this.callsFailed = 0;
+        this.lastCallStartedTimestamp = null;
+    }
+    addCallStarted() {
+        this.callsStarted += 1;
+        this.lastCallStartedTimestamp = new Date();
+    }
+    addCallSucceeded() {
+        this.callsSucceeded += 1;
+    }
+    addCallFailed() {
+        this.callsFailed += 1;
+    }
+}
+exports.ChannelzCallTracker = ChannelzCallTracker;
+let nextId = 1;
+function getNextId() {
+    return nextId++;
+}
+const channels = [];
+const subchannels = [];
+const servers = [];
+const sockets = [];
+function registerChannelzChannel(name, getInfo, channelzEnabled) {
+    const id = getNextId();
+    const ref = { id, name, kind: 'channel' };
+    if (channelzEnabled) {
+        channels[id] = { ref, getInfo };
+    }
+    return ref;
+}
+exports.registerChannelzChannel = registerChannelzChannel;
+function registerChannelzSubchannel(name, getInfo, channelzEnabled) {
+    const id = getNextId();
+    const ref = { id, name, kind: 'subchannel' };
+    if (channelzEnabled) {
+        subchannels[id] = { ref, getInfo };
+    }
+    return ref;
+}
+exports.registerChannelzSubchannel = registerChannelzSubchannel;
+function registerChannelzServer(getInfo, channelzEnabled) {
+    const id = getNextId();
+    const ref = { id, kind: 'server' };
+    if (channelzEnabled) {
+        servers[id] = { ref, getInfo };
+    }
+    return ref;
+}
+exports.registerChannelzServer = registerChannelzServer;
+function registerChannelzSocket(name, getInfo, channelzEnabled) {
+    const id = getNextId();
+    const ref = { id, name, kind: 'socket' };
+    if (channelzEnabled) {
+        sockets[id] = { ref, getInfo };
+    }
+    return ref;
+}
+exports.registerChannelzSocket = registerChannelzSocket;
+function unregisterChannelzRef(ref) {
+    switch (ref.kind) {
+        case 'channel':
+            delete channels[ref.id];
+            return;
+        case 'subchannel':
+            delete subchannels[ref.id];
+            return;
+        case 'server':
+            delete servers[ref.id];
+            return;
+        case 'socket':
+            delete sockets[ref.id];
+            return;
+    }
+}
+exports.unregisterChannelzRef = unregisterChannelzRef;
+/**
+ * Parse a single section of an IPv6 address as two bytes
+ * @param addressSection A hexadecimal string of length up to 4
+ * @returns The pair of bytes representing this address section
+ */
+function parseIPv6Section(addressSection) {
+    const numberValue = Number.parseInt(addressSection, 16);
+    return [numberValue / 256 | 0, numberValue % 256];
+}
+/**
+ * Parse a chunk of an IPv6 address string to some number of bytes
+ * @param addressChunk Some number of segments of up to 4 hexadecimal
+ *   characters each, joined by colons.
+ * @returns The list of bytes representing this address chunk
+ */
+function parseIPv6Chunk(addressChunk) {
+    if (addressChunk === '') {
+        return [];
+    }
+    const bytePairs = addressChunk.split(':').map(section => parseIPv6Section(section));
+    const result = [];
+    return result.concat(...bytePairs);
+}
+/**
+ * Converts an IPv4 or IPv6 address from string representation to binary
+ * representation
+ * @param ipAddress an IP address in standard IPv4 or IPv6 text format
+ * @returns
+ */
+function ipAddressStringToBuffer(ipAddress) {
+    if (net_1.isIPv4(ipAddress)) {
+        return Buffer.from(Uint8Array.from(ipAddress.split('.').map(segment => Number.parseInt(segment))));
+    }
+    else if (net_1.isIPv6(ipAddress)) {
+        let leftSection;
+        let rightSection;
+        const doubleColonIndex = ipAddress.indexOf('::');
+        if (doubleColonIndex === -1) {
+            leftSection = ipAddress;
+            rightSection = '';
+        }
+        else {
+            leftSection = ipAddress.substring(0, doubleColonIndex);
+            rightSection = ipAddress.substring(doubleColonIndex + 2);
+        }
+        const leftBuffer = Buffer.from(parseIPv6Chunk(leftSection));
+        const rightBuffer = Buffer.from(parseIPv6Chunk(rightSection));
+        const middleBuffer = Buffer.alloc(16 - leftBuffer.length - rightBuffer.length, 0);
+        return Buffer.concat([leftBuffer, middleBuffer, rightBuffer]);
+    }
+    else {
+        return null;
+    }
+}
+function connectivityStateToMessage(state) {
+    switch (state) {
+        case connectivity_state_1.ConnectivityState.CONNECTING:
+            return {
+                state: 'CONNECTING'
+            };
+        case connectivity_state_1.ConnectivityState.IDLE:
+            return {
+                state: 'IDLE'
+            };
+        case connectivity_state_1.ConnectivityState.READY:
+            return {
+                state: 'READY'
+            };
+        case connectivity_state_1.ConnectivityState.SHUTDOWN:
+            return {
+                state: 'SHUTDOWN'
+            };
+        case connectivity_state_1.ConnectivityState.TRANSIENT_FAILURE:
+            return {
+                state: 'TRANSIENT_FAILURE'
+            };
+        default:
+            return {
+                state: 'UNKNOWN'
+            };
+    }
+}
+function dateToProtoTimestamp(date) {
+    if (!date) {
+        return null;
+    }
+    const millisSinceEpoch = date.getTime();
+    return {
+        seconds: (millisSinceEpoch / 1000) | 0,
+        nanos: (millisSinceEpoch % 1000) * 1000000
+    };
+}
+function getChannelMessage(channelEntry) {
+    const resolvedInfo = channelEntry.getInfo();
+    return {
+        ref: channelRefToMessage(channelEntry.ref),
+        data: {
+            target: resolvedInfo.target,
+            state: connectivityStateToMessage(resolvedInfo.state),
+            calls_started: resolvedInfo.callTracker.callsStarted,
+            calls_succeeded: resolvedInfo.callTracker.callsSucceeded,
+            calls_failed: resolvedInfo.callTracker.callsFailed,
+            last_call_started_timestamp: dateToProtoTimestamp(resolvedInfo.callTracker.lastCallStartedTimestamp),
+            trace: resolvedInfo.trace.getTraceMessage()
+        },
+        channel_ref: resolvedInfo.children.channels.map(ref => channelRefToMessage(ref)),
+        subchannel_ref: resolvedInfo.children.subchannels.map(ref => subchannelRefToMessage(ref))
+    };
+}
+function GetChannel(call, callback) {
+    const channelId = Number.parseInt(call.request.channel_id);
+    const channelEntry = channels[channelId];
+    if (channelEntry === undefined) {
+        callback({
+            'code': constants_1.Status.NOT_FOUND,
+            'details': 'No channel data found for id ' + channelId
+        });
+        return;
+    }
+    callback(null, { channel: getChannelMessage(channelEntry) });
+}
+function GetTopChannels(call, callback) {
+    const maxResults = Number.parseInt(call.request.max_results);
+    const resultList = [];
+    let i = Number.parseInt(call.request.start_channel_id);
+    for (; i < channels.length; i++) {
+        const channelEntry = channels[i];
+        if (channelEntry === undefined) {
+            continue;
+        }
+        resultList.push(getChannelMessage(channelEntry));
+        if (resultList.length >= maxResults) {
+            break;
+        }
+    }
+    callback(null, {
+        channel: resultList,
+        end: i >= servers.length
+    });
+}
+function getServerMessage(serverEntry) {
+    const resolvedInfo = serverEntry.getInfo();
+    return {
+        ref: serverRefToMessage(serverEntry.ref),
+        data: {
+            calls_started: resolvedInfo.callTracker.callsStarted,
+            calls_succeeded: resolvedInfo.callTracker.callsSucceeded,
+            calls_failed: resolvedInfo.callTracker.callsFailed,
+            last_call_started_timestamp: dateToProtoTimestamp(resolvedInfo.callTracker.lastCallStartedTimestamp),
+            trace: resolvedInfo.trace.getTraceMessage()
+        },
+        listen_socket: resolvedInfo.listenerChildren.sockets.map(ref => socketRefToMessage(ref))
+    };
+}
+function GetServer(call, callback) {
+    const serverId = Number.parseInt(call.request.server_id);
+    const serverEntry = servers[serverId];
+    if (serverEntry === undefined) {
+        callback({
+            'code': constants_1.Status.NOT_FOUND,
+            'details': 'No server data found for id ' + serverId
+        });
+        return;
+    }
+    callback(null, { server: getServerMessage(serverEntry) });
+}
+function GetServers(call, callback) {
+    const maxResults = Number.parseInt(call.request.max_results);
+    const resultList = [];
+    let i = Number.parseInt(call.request.start_server_id);
+    for (; i < servers.length; i++) {
+        const serverEntry = servers[i];
+        if (serverEntry === undefined) {
+            continue;
+        }
+        resultList.push(getServerMessage(serverEntry));
+        if (resultList.length >= maxResults) {
+            break;
+        }
+    }
+    callback(null, {
+        server: resultList,
+        end: i >= servers.length
+    });
+}
+function GetSubchannel(call, callback) {
+    const subchannelId = Number.parseInt(call.request.subchannel_id);
+    const subchannelEntry = subchannels[subchannelId];
+    if (subchannelEntry === undefined) {
+        callback({
+            'code': constants_1.Status.NOT_FOUND,
+            'details': 'No subchannel data found for id ' + subchannelId
+        });
+        return;
+    }
+    const resolvedInfo = subchannelEntry.getInfo();
+    const subchannelMessage = {
+        ref: subchannelRefToMessage(subchannelEntry.ref),
+        data: {
+            target: resolvedInfo.target,
+            state: connectivityStateToMessage(resolvedInfo.state),
+            calls_started: resolvedInfo.callTracker.callsStarted,
+            calls_succeeded: resolvedInfo.callTracker.callsSucceeded,
+            calls_failed: resolvedInfo.callTracker.callsFailed,
+            last_call_started_timestamp: dateToProtoTimestamp(resolvedInfo.callTracker.lastCallStartedTimestamp),
+            trace: resolvedInfo.trace.getTraceMessage()
+        },
+        socket_ref: resolvedInfo.children.sockets.map(ref => socketRefToMessage(ref))
+    };
+    callback(null, { subchannel: subchannelMessage });
+}
+function subchannelAddressToAddressMessage(subchannelAddress) {
+    var _a;
+    if (subchannel_address_1.isTcpSubchannelAddress(subchannelAddress)) {
+        return {
+            address: 'tcpip_address',
+            tcpip_address: {
+                ip_address: (_a = ipAddressStringToBuffer(subchannelAddress.host)) !== null && _a !== void 0 ? _a : undefined,
+                port: subchannelAddress.port
+            }
+        };
+    }
+    else {
+        return {
+            address: 'uds_address',
+            uds_address: {
+                filename: subchannelAddress.path
+            }
+        };
+    }
+}
+function GetSocket(call, callback) {
+    var _a, _b, _c, _d, _e;
+    const socketId = Number.parseInt(call.request.socket_id);
+    const socketEntry = sockets[socketId];
+    if (socketEntry === undefined) {
+        callback({
+            'code': constants_1.Status.NOT_FOUND,
+            'details': 'No socket data found for id ' + socketId
+        });
+        return;
+    }
+    const resolvedInfo = socketEntry.getInfo();
+    const securityMessage = resolvedInfo.security ? {
+        model: 'tls',
+        tls: {
+            cipher_suite: resolvedInfo.security.cipherSuiteStandardName ? 'standard_name' : 'other_name',
+            standard_name: (_a = resolvedInfo.security.cipherSuiteStandardName) !== null && _a !== void 0 ? _a : undefined,
+            other_name: (_b = resolvedInfo.security.cipherSuiteOtherName) !== null && _b !== void 0 ? _b : undefined,
+            local_certificate: (_c = resolvedInfo.security.localCertificate) !== null && _c !== void 0 ? _c : undefined,
+            remote_certificate: (_d = resolvedInfo.security.remoteCertificate) !== null && _d !== void 0 ? _d : undefined
+        }
+    } : null;
+    const socketMessage = {
+        ref: socketRefToMessage(socketEntry.ref),
+        local: resolvedInfo.localAddress ? subchannelAddressToAddressMessage(resolvedInfo.localAddress) : null,
+        remote: resolvedInfo.remoteAddress ? subchannelAddressToAddressMessage(resolvedInfo.remoteAddress) : null,
+        remote_name: (_e = resolvedInfo.remoteName) !== null && _e !== void 0 ? _e : undefined,
+        security: securityMessage,
+        data: {
+            keep_alives_sent: resolvedInfo.keepAlivesSent,
+            streams_started: resolvedInfo.streamsStarted,
+            streams_succeeded: resolvedInfo.streamsSucceeded,
+            streams_failed: resolvedInfo.streamsFailed,
+            last_local_stream_created_timestamp: dateToProtoTimestamp(resolvedInfo.lastLocalStreamCreatedTimestamp),
+            last_remote_stream_created_timestamp: dateToProtoTimestamp(resolvedInfo.lastRemoteStreamCreatedTimestamp),
+            messages_received: resolvedInfo.messagesReceived,
+            messages_sent: resolvedInfo.messagesSent,
+            last_message_received_timestamp: dateToProtoTimestamp(resolvedInfo.lastMessageReceivedTimestamp),
+            last_message_sent_timestamp: dateToProtoTimestamp(resolvedInfo.lastMessageSentTimestamp),
+            local_flow_control_window: resolvedInfo.localFlowControlWindow ? { value: resolvedInfo.localFlowControlWindow } : null,
+            remote_flow_control_window: resolvedInfo.remoteFlowControlWindow ? { value: resolvedInfo.remoteFlowControlWindow } : null,
+        }
+    };
+    callback(null, { socket: socketMessage });
+}
+function GetServerSockets(call, callback) {
+    const serverId = Number.parseInt(call.request.server_id);
+    const serverEntry = servers[serverId];
+    if (serverEntry === undefined) {
+        callback({
+            'code': constants_1.Status.NOT_FOUND,
+            'details': 'No server data found for id ' + serverId
+        });
+        return;
+    }
+    const startId = Number.parseInt(call.request.start_socket_id);
+    const maxResults = Number.parseInt(call.request.max_results);
+    const resolvedInfo = serverEntry.getInfo();
+    // If we wanted to include listener sockets in the result, this line would
+    // instead say
+    // const allSockets = resolvedInfo.listenerChildren.sockets.concat(resolvedInfo.sessionChildren.sockets).sort((ref1, ref2) => ref1.id - ref2.id);
+    const allSockets = resolvedInfo.sessionChildren.sockets.sort((ref1, ref2) => ref1.id - ref2.id);
+    const resultList = [];
+    let i = 0;
+    for (; i < allSockets.length; i++) {
+        if (allSockets[i].id >= startId) {
+            resultList.push(socketRefToMessage(allSockets[i]));
+            if (resultList.length >= maxResults) {
+                break;
+            }
+        }
+    }
+    callback(null, {
+        socket_ref: resultList,
+        end: i >= allSockets.length
+    });
+}
+function getChannelzHandlers() {
+    return {
+        GetChannel,
+        GetTopChannels,
+        GetServer,
+        GetServers,
+        GetSubchannel,
+        GetSocket,
+        GetServerSockets
+    };
+}
+exports.getChannelzHandlers = getChannelzHandlers;
+let loadedChannelzDefinition = null;
+function getChannelzServiceDefinition() {
+    if (loadedChannelzDefinition) {
+        return loadedChannelzDefinition;
+    }
+    /* The purpose of this complexity is to avoid loading @grpc/proto-loader at
+     * runtime for users who will not use/enable channelz. */
+    const loaderLoadSync = require('@grpc/proto-loader').loadSync;
+    const loadedProto = loaderLoadSync('channelz.proto', {
+        keepCase: true,
+        longs: String,
+        enums: String,
+        defaults: true,
+        oneofs: true,
+        includeDirs: [
+            `${__dirname}/../../proto`
+        ]
+    });
+    const channelzGrpcObject = make_client_1.loadPackageDefinition(loadedProto);
+    loadedChannelzDefinition = channelzGrpcObject.grpc.channelz.v1.Channelz.service;
+    return loadedChannelzDefinition;
+}
+exports.getChannelzServiceDefinition = getChannelzServiceDefinition;
+function setup() {
+    admin_1.registerAdminService(getChannelzServiceDefinition, getChannelzHandlers);
+}
+exports.setup = setup;
+//# sourceMappingURL=channelz.js.map

node_modules/@grpc/grpc-js/build/src/client-interceptors.d.ts

@@ -0,0 +1,123 @@
+import { Metadata } from './metadata';
+import { Listener, MetadataListener, MessageListener, StatusListener, InterceptingListener, MessageContext } from './call-stream';
+import { Status } from './constants';
+import { Channel } from './channel';
+import { CallOptions } from './client';
+import { CallCredentials } from './call-credentials';
+import { ClientMethodDefinition } from './make-client';
+/**
+ * Error class associated with passing both interceptors and interceptor
+ * providers to a client constructor or as call options.
+ */
+export declare class InterceptorConfigurationError extends Error {
+    constructor(message: string);
+}
+export interface MetadataRequester {
+    (metadata: Metadata, listener: InterceptingListener, next: (metadata: Metadata, listener: InterceptingListener | Listener) => void): void;
+}
+export interface MessageRequester {
+    (message: any, next: (message: any) => void): void;
+}
+export interface CloseRequester {
+    (next: () => void): void;
+}
+export interface CancelRequester {
+    (next: () => void): void;
+}
+/**
+ * An object with methods for intercepting and modifying outgoing call operations.
+ */
+export interface FullRequester {
+    start: MetadataRequester;
+    sendMessage: MessageRequester;
+    halfClose: CloseRequester;
+    cancel: CancelRequester;
+}
+export declare type Requester = Partial<FullRequester>;
+export declare class ListenerBuilder {
+    private metadata;
+    private message;
+    private status;
+    withOnReceiveMetadata(onReceiveMetadata: MetadataListener): this;
+    withOnReceiveMessage(onReceiveMessage: MessageListener): this;
+    withOnReceiveStatus(onReceiveStatus: StatusListener): this;
+    build(): Listener;
+}
+export declare class RequesterBuilder {
+    private start;
+    private message;
+    private halfClose;
+    private cancel;
+    withStart(start: MetadataRequester): this;
+    withSendMessage(sendMessage: MessageRequester): this;
+    withHalfClose(halfClose: CloseRequester): this;
+    withCancel(cancel: CancelRequester): this;
+    build(): Requester;
+}
+export interface InterceptorOptions extends CallOptions {
+    method_definition: ClientMethodDefinition<any, any>;
+}
+export interface InterceptingCallInterface {
+    cancelWithStatus(status: Status, details: string): void;
+    getPeer(): string;
+    start(metadata: Metadata, listener?: Partial<InterceptingListener>): void;
+    sendMessageWithContext(context: MessageContext, message: any): void;
+    sendMessage(message: any): void;
+    startRead(): void;
+    halfClose(): void;
+    setCredentials(credentials: CallCredentials): void;
+}
+export declare class InterceptingCall implements InterceptingCallInterface {
+    private nextCall;
+    /**
+     * The requester that this InterceptingCall uses to modify outgoing operations
+     */
+    private requester;
+    /**
+     * Indicates that metadata has been passed to the requester's start
+     * method but it has not been passed to the corresponding next callback
+     */
+    private processingMetadata;
+    /**
+     * Message context for a pending message that is waiting for
+     */
+    private pendingMessageContext;
+    private pendingMessage;
+    /**
+     * Indicates that a message has been passed to the requester's sendMessage
+     * method but it has not been passed to the corresponding next callback
+     */
+    private processingMessage;
+    /**
+     * Indicates that a status was received but could not be propagated because
+     * a message was still being processed.
+     */
+    private pendingHalfClose;
+    constructor(nextCall: InterceptingCallInterface, requester?: Requester);
+    cancelWithStatus(status: Status, details: string): void;
+    getPeer(): string;
+    private processPendingMessage;
+    private processPendingHalfClose;
+    start(metadata: Metadata, interceptingListener?: Partial<InterceptingListener>): void;
+    sendMessageWithContext(context: MessageContext, message: any): void;
+    sendMessage(message: any): void;
+    startRead(): void;
+    halfClose(): void;
+    setCredentials(credentials: CallCredentials): void;
+}
+export interface NextCall {
+    (options: InterceptorOptions): InterceptingCallInterface;
+}
+export interface Interceptor {
+    (options: InterceptorOptions, nextCall: NextCall): InterceptingCall;
+}
+export interface InterceptorProvider {
+    (methodDefinition: ClientMethodDefinition<any, any>): Interceptor;
+}
+export interface InterceptorArguments {
+    clientInterceptors: Interceptor[];
+    clientInterceptorProviders: InterceptorProvider[];
+    callInterceptors: Interceptor[];
+    callInterceptorProviders: InterceptorProvider[];
+}
+export declare function getInterceptingCall(interceptorArgs: InterceptorArguments, methodDefinition: ClientMethodDefinition<any, any>, options: CallOptions, channel: Channel): InterceptingCallInterface;

node_modules/@grpc/grpc-js/build/src/client-interceptors.js

@@ -0,0 +1,433 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getInterceptingCall = exports.InterceptingCall = exports.RequesterBuilder = exports.ListenerBuilder = exports.InterceptorConfigurationError = void 0;
+const metadata_1 = require("./metadata");
+const call_stream_1 = require("./call-stream");
+const constants_1 = require("./constants");
+/**
+ * Error class associated with passing both interceptors and interceptor
+ * providers to a client constructor or as call options.
+ */
+class InterceptorConfigurationError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = 'InterceptorConfigurationError';
+        Error.captureStackTrace(this, InterceptorConfigurationError);
+    }
+}
+exports.InterceptorConfigurationError = InterceptorConfigurationError;
+class ListenerBuilder {
+    constructor() {
+        this.metadata = undefined;
+        this.message = undefined;
+        this.status = undefined;
+    }
+    withOnReceiveMetadata(onReceiveMetadata) {
+        this.metadata = onReceiveMetadata;
+        return this;
+    }
+    withOnReceiveMessage(onReceiveMessage) {
+        this.message = onReceiveMessage;
+        return this;
+    }
+    withOnReceiveStatus(onReceiveStatus) {
+        this.status = onReceiveStatus;
+        return this;
+    }
+    build() {
+        return {
+            onReceiveMetadata: this.metadata,
+            onReceiveMessage: this.message,
+            onReceiveStatus: this.status,
+        };
+    }
+}
+exports.ListenerBuilder = ListenerBuilder;
+class RequesterBuilder {
+    constructor() {
+        this.start = undefined;
+        this.message = undefined;
+        this.halfClose = undefined;
+        this.cancel = undefined;
+    }
+    withStart(start) {
+        this.start = start;
+        return this;
+    }
+    withSendMessage(sendMessage) {
+        this.message = sendMessage;
+        return this;
+    }
+    withHalfClose(halfClose) {
+        this.halfClose = halfClose;
+        return this;
+    }
+    withCancel(cancel) {
+        this.cancel = cancel;
+        return this;
+    }
+    build() {
+        return {
+            start: this.start,
+            sendMessage: this.message,
+            halfClose: this.halfClose,
+            cancel: this.cancel,
+        };
+    }
+}
+exports.RequesterBuilder = RequesterBuilder;
+/**
+ * A Listener with a default pass-through implementation of each method. Used
+ * for filling out Listeners with some methods omitted.
+ */
+const defaultListener = {
+    onReceiveMetadata: (metadata, next) => {
+        next(metadata);
+    },
+    onReceiveMessage: (message, next) => {
+        next(message);
+    },
+    onReceiveStatus: (status, next) => {
+        next(status);
+    },
+};
+/**
+ * A Requester with a default pass-through implementation of each method. Used
+ * for filling out Requesters with some methods omitted.
+ */
+const defaultRequester = {
+    start: (metadata, listener, next) => {
+        next(metadata, listener);
+    },
+    sendMessage: (message, next) => {
+        next(message);
+    },
+    halfClose: (next) => {
+        next();
+    },
+    cancel: (next) => {
+        next();
+    },
+};
+class InterceptingCall {
+    constructor(nextCall, requester) {
+        var _a, _b, _c, _d;
+        this.nextCall = nextCall;
+        /**
+         * Indicates that metadata has been passed to the requester's start
+         * method but it has not been passed to the corresponding next callback
+         */
+        this.processingMetadata = false;
+        /**
+         * Message context for a pending message that is waiting for
+         */
+        this.pendingMessageContext = null;
+        /**
+         * Indicates that a message has been passed to the requester's sendMessage
+         * method but it has not been passed to the corresponding next callback
+         */
+        this.processingMessage = false;
+        /**
+         * Indicates that a status was received but could not be propagated because
+         * a message was still being processed.
+         */
+        this.pendingHalfClose = false;
+        if (requester) {
+            this.requester = {
+                start: (_a = requester.start) !== null && _a !== void 0 ? _a : defaultRequester.start,
+                sendMessage: (_b = requester.sendMessage) !== null && _b !== void 0 ? _b : defaultRequester.sendMessage,
+                halfClose: (_c = requester.halfClose) !== null && _c !== void 0 ? _c : defaultRequester.halfClose,
+                cancel: (_d = requester.cancel) !== null && _d !== void 0 ? _d : defaultRequester.cancel,
+            };
+        }
+        else {
+            this.requester = defaultRequester;
+        }
+    }
+    cancelWithStatus(status, details) {
+        this.requester.cancel(() => {
+            this.nextCall.cancelWithStatus(status, details);
+        });
+    }
+    getPeer() {
+        return this.nextCall.getPeer();
+    }
+    processPendingMessage() {
+        if (this.pendingMessageContext) {
+            this.nextCall.sendMessageWithContext(this.pendingMessageContext, this.pendingMessage);
+            this.pendingMessageContext = null;
+            this.pendingMessage = null;
+        }
+    }
+    processPendingHalfClose() {
+        if (this.pendingHalfClose) {
+            this.nextCall.halfClose();
+        }
+    }
+    start(metadata, interceptingListener) {
+        var _a, _b, _c, _d, _e, _f;
+        const fullInterceptingListener = {
+            onReceiveMetadata: (_b = (_a = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveMetadata) === null || _a === void 0 ? void 0 : _a.bind(interceptingListener)) !== null && _b !== void 0 ? _b : ((metadata) => { }),
+            onReceiveMessage: (_d = (_c = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveMessage) === null || _c === void 0 ? void 0 : _c.bind(interceptingListener)) !== null && _d !== void 0 ? _d : ((message) => { }),
+            onReceiveStatus: (_f = (_e = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveStatus) === null || _e === void 0 ? void 0 : _e.bind(interceptingListener)) !== null && _f !== void 0 ? _f : ((status) => { }),
+        };
+        this.processingMetadata = true;
+        this.requester.start(metadata, fullInterceptingListener, (md, listener) => {
+            var _a, _b, _c;
+            this.processingMetadata = false;
+            let finalInterceptingListener;
+            if (call_stream_1.isInterceptingListener(listener)) {
+                finalInterceptingListener = listener;
+            }
+            else {
+                const fullListener = {
+                    onReceiveMetadata: (_a = listener.onReceiveMetadata) !== null && _a !== void 0 ? _a : defaultListener.onReceiveMetadata,
+                    onReceiveMessage: (_b = listener.onReceiveMessage) !== null && _b !== void 0 ? _b : defaultListener.onReceiveMessage,
+                    onReceiveStatus: (_c = listener.onReceiveStatus) !== null && _c !== void 0 ? _c : defaultListener.onReceiveStatus,
+                };
+                finalInterceptingListener = new call_stream_1.InterceptingListenerImpl(fullListener, fullInterceptingListener);
+            }
+            this.nextCall.start(md, finalInterceptingListener);
+            this.processPendingMessage();
+            this.processPendingHalfClose();
+        });
+    }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    sendMessageWithContext(context, message) {
+        this.processingMessage = true;
+        this.requester.sendMessage(message, (finalMessage) => {
+            this.processingMessage = false;
+            if (this.processingMetadata) {
+                this.pendingMessageContext = context;
+                this.pendingMessage = message;
+            }
+            else {
+                this.nextCall.sendMessageWithContext(context, finalMessage);
+                this.processPendingHalfClose();
+            }
+        });
+    }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    sendMessage(message) {
+        this.sendMessageWithContext({}, message);
+    }
+    startRead() {
+        this.nextCall.startRead();
+    }
+    halfClose() {
+        this.requester.halfClose(() => {
+            if (this.processingMetadata || this.processingMessage) {
+                this.pendingHalfClose = true;
+            }
+            else {
+                this.nextCall.halfClose();
+            }
+        });
+    }
+    setCredentials(credentials) {
+        this.nextCall.setCredentials(credentials);
+    }
+}
+exports.InterceptingCall = InterceptingCall;
+function getCall(channel, path, options) {
+    var _a, _b;
+    const deadline = (_a = options.deadline) !== null && _a !== void 0 ? _a : Infinity;
+    const host = options.host;
+    const parent = (_b = options.parent) !== null && _b !== void 0 ? _b : null;
+    const propagateFlags = options.propagate_flags;
+    const credentials = options.credentials;
+    const call = channel.createCall(path, deadline, host, parent, propagateFlags);
+    if (credentials) {
+        call.setCredentials(credentials);
+    }
+    return call;
+}
+/**
+ * InterceptingCall implementation that directly owns the underlying Call
+ * object and handles serialization and deseraizliation.
+ */
+class BaseInterceptingCall {
+    constructor(call, 
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    methodDefinition) {
+        this.call = call;
+        this.methodDefinition = methodDefinition;
+    }
+    cancelWithStatus(status, details) {
+        this.call.cancelWithStatus(status, details);
+    }
+    getPeer() {
+        return this.call.getPeer();
+    }
+    setCredentials(credentials) {
+        this.call.setCredentials(credentials);
+    }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    sendMessageWithContext(context, message) {
+        let serialized;
+        try {
+            serialized = this.methodDefinition.requestSerialize(message);
+        }
+        catch (e) {
+            this.call.cancelWithStatus(constants_1.Status.INTERNAL, `Request message serialization failure: ${e.message}`);
+            return;
+        }
+        this.call.sendMessageWithContext(context, serialized);
+    }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    sendMessage(message) {
+        this.sendMessageWithContext({}, message);
+    }
+    start(metadata, interceptingListener) {
+        let readError = null;
+        this.call.start(metadata, {
+            onReceiveMetadata: (metadata) => {
+                var _a;
+                (_a = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveMetadata) === null || _a === void 0 ? void 0 : _a.call(interceptingListener, metadata);
+            },
+            onReceiveMessage: (message) => {
+                var _a;
+                // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                let deserialized;
+                try {
+                    deserialized = this.methodDefinition.responseDeserialize(message);
+                }
+                catch (e) {
+                    readError = {
+                        code: constants_1.Status.INTERNAL,
+                        details: `Response message parsing error: ${e.message}`,
+                        metadata: new metadata_1.Metadata(),
+                    };
+                    this.call.cancelWithStatus(readError.code, readError.details);
+                    return;
+                }
+                (_a = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveMessage) === null || _a === void 0 ? void 0 : _a.call(interceptingListener, deserialized);
+            },
+            onReceiveStatus: (status) => {
+                var _a, _b;
+                if (readError) {
+                    (_a = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveStatus) === null || _a === void 0 ? void 0 : _a.call(interceptingListener, readError);
+                }
+                else {
+                    (_b = interceptingListener === null || interceptingListener === void 0 ? void 0 : interceptingListener.onReceiveStatus) === null || _b === void 0 ? void 0 : _b.call(interceptingListener, status);
+                }
+            },
+        });
+    }
+    startRead() {
+        this.call.startRead();
+    }
+    halfClose() {
+        this.call.halfClose();
+    }
+}
+/**
+ * BaseInterceptingCall with special-cased behavior for methods with unary
+ * responses.
+ */
+class BaseUnaryInterceptingCall extends BaseInterceptingCall {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    constructor(call, methodDefinition) {
+        super(call, methodDefinition);
+    }
+    start(metadata, listener) {
+        var _a, _b;
+        let receivedMessage = false;
+        const wrapperListener = {
+            onReceiveMetadata: (_b = (_a = listener === null || listener === void 0 ? void 0 : listener.onReceiveMetadata) === null || _a === void 0 ? void 0 : _a.bind(listener)) !== null && _b !== void 0 ? _b : ((metadata) => { }),
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            onReceiveMessage: (message) => {
+                var _a;
+                receivedMessage = true;
+                (_a = listener === null || listener === void 0 ? void 0 : listener.onReceiveMessage) === null || _a === void 0 ? void 0 : _a.call(listener, message);
+            },
+            onReceiveStatus: (status) => {
+                var _a, _b;
+                if (!receivedMessage) {
+                    (_a = listener === null || listener === void 0 ? void 0 : listener.onReceiveMessage) === null || _a === void 0 ? void 0 : _a.call(listener, null);
+                }
+                (_b = listener === null || listener === void 0 ? void 0 : listener.onReceiveStatus) === null || _b === void 0 ? void 0 : _b.call(listener, status);
+            },
+        };
+        super.start(metadata, wrapperListener);
+        this.call.startRead();
+    }
+}
+/**
+ * BaseInterceptingCall with special-cased behavior for methods with streaming
+ * responses.
+ */
+class BaseStreamingInterceptingCall extends BaseInterceptingCall {
+}
+function getBottomInterceptingCall(channel, options, 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+methodDefinition) {
+    const call = getCall(channel, methodDefinition.path, options);
+    if (methodDefinition.responseStream) {
+        return new BaseStreamingInterceptingCall(call, methodDefinition);
+    }
+    else {
+        return new BaseUnaryInterceptingCall(call, methodDefinition);
+    }
+}
+function getInterceptingCall(interceptorArgs, 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+methodDefinition, options, channel) {
+    if (interceptorArgs.clientInterceptors.length > 0 &&
+        interceptorArgs.clientInterceptorProviders.length > 0) {
+        throw new InterceptorConfigurationError('Both interceptors and interceptor_providers were passed as options ' +
+            'to the client constructor. Only one of these is allowed.');
+    }
+    if (interceptorArgs.callInterceptors.length > 0 &&
+        interceptorArgs.callInterceptorProviders.length > 0) {
+        throw new InterceptorConfigurationError('Both interceptors and interceptor_providers were passed as call ' +
+            'options. Only one of these is allowed.');
+    }
+    let interceptors = [];
+    // Interceptors passed to the call override interceptors passed to the client constructor
+    if (interceptorArgs.callInterceptors.length > 0 ||
+        interceptorArgs.callInterceptorProviders.length > 0) {
+        interceptors = []
+            .concat(interceptorArgs.callInterceptors, interceptorArgs.callInterceptorProviders.map((provider) => provider(methodDefinition)))
+            .filter((interceptor) => interceptor);
+        // Filter out falsy values when providers return nothing
+    }
+    else {
+        interceptors = []
+            .concat(interceptorArgs.clientInterceptors, interceptorArgs.clientInterceptorProviders.map((provider) => provider(methodDefinition)))
+            .filter((interceptor) => interceptor);
+        // Filter out falsy values when providers return nothing
+    }
+    const interceptorOptions = Object.assign({}, options, {
+        method_definition: methodDefinition,
+    });
+    /* For each interceptor in the list, the nextCall function passed to it is
+     * based on the next interceptor in the list, using a nextCall function
+     * constructed with the following interceptor in the list, and so on. The
+     * initialValue, which is effectively at the end of the list, is a nextCall
+     * function that invokes getBottomInterceptingCall, the result of which
+     * handles (de)serialization and also gets the underlying call from the
+     * channel. */
+    const getCall = interceptors.reduceRight((nextCall, nextInterceptor) => {
+        return (currentOptions) => nextInterceptor(currentOptions, nextCall);
+    }, (finalOptions) => getBottomInterceptingCall(channel, finalOptions, methodDefinition));
+    return getCall(interceptorOptions);
+}
+exports.getInterceptingCall = getInterceptingCall;
+//# sourceMappingURL=client-interceptors.js.map

node_modules/@grpc/grpc-js/build/src/client.d.ts

@@ -0,0 +1,75 @@
+/// <reference types="node" />
+import { ClientDuplexStream, ClientReadableStream, ClientUnaryCall, ClientWritableStream, ServiceError, SurfaceCall } from './call';
+import { CallCredentials } from './call-credentials';
+import { Deadline } from './call-stream';
+import { Channel } from './channel';
+import { ChannelCredentials } from './channel-credentials';
+import { ChannelOptions } from './channel-options';
+import { Metadata } from './metadata';
+import { ClientMethodDefinition } from './make-client';
+import { Interceptor, InterceptorProvider } from './client-interceptors';
+import { ServerUnaryCall, ServerReadableStream, ServerWritableStream, ServerDuplexStream } from './server-call';
+declare const CHANNEL_SYMBOL: unique symbol;
+declare const INTERCEPTOR_SYMBOL: unique symbol;
+declare const INTERCEPTOR_PROVIDER_SYMBOL: unique symbol;
+declare const CALL_INVOCATION_TRANSFORMER_SYMBOL: unique symbol;
+export interface UnaryCallback<ResponseType> {
+    (err: ServiceError | null, value?: ResponseType): void;
+}
+export interface CallOptions {
+    deadline?: Deadline;
+    host?: string;
+    parent?: ServerUnaryCall<any, any> | ServerReadableStream<any, any> | ServerWritableStream<any, any> | ServerDuplexStream<any, any>;
+    propagate_flags?: number;
+    credentials?: CallCredentials;
+    interceptors?: Interceptor[];
+    interceptor_providers?: InterceptorProvider[];
+}
+export interface CallProperties<RequestType, ResponseType> {
+    argument?: RequestType;
+    metadata: Metadata;
+    call: SurfaceCall;
+    channel: Channel;
+    methodDefinition: ClientMethodDefinition<RequestType, ResponseType>;
+    callOptions: CallOptions;
+    callback?: UnaryCallback<ResponseType>;
+}
+export interface CallInvocationTransformer {
+    (callProperties: CallProperties<any, any>): CallProperties<any, any>;
+}
+export declare type ClientOptions = Partial<ChannelOptions> & {
+    channelOverride?: Channel;
+    channelFactoryOverride?: (address: string, credentials: ChannelCredentials, options: ClientOptions) => Channel;
+    interceptors?: Interceptor[];
+    interceptor_providers?: InterceptorProvider[];
+    callInvocationTransformer?: CallInvocationTransformer;
+};
+/**
+ * A generic gRPC client. Primarily useful as a base class for all generated
+ * clients.
+ */
+export declare class Client {
+    private readonly [CHANNEL_SYMBOL];
+    private readonly [INTERCEPTOR_SYMBOL];
+    private readonly [INTERCEPTOR_PROVIDER_SYMBOL];
+    private readonly [CALL_INVOCATION_TRANSFORMER_SYMBOL]?;
+    constructor(address: string, credentials: ChannelCredentials, options?: ClientOptions);
+    close(): void;
+    getChannel(): Channel;
+    waitForReady(deadline: Deadline, callback: (error?: Error) => void): void;
+    private checkOptionalUnaryResponseArguments;
+    makeUnaryRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, metadata: Metadata, options: CallOptions, callback: UnaryCallback<ResponseType>): ClientUnaryCall;
+    makeUnaryRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, metadata: Metadata, callback: UnaryCallback<ResponseType>): ClientUnaryCall;
+    makeUnaryRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, options: CallOptions, callback: UnaryCallback<ResponseType>): ClientUnaryCall;
+    makeUnaryRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, callback: UnaryCallback<ResponseType>): ClientUnaryCall;
+    makeClientStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, metadata: Metadata, options: CallOptions, callback: UnaryCallback<ResponseType>): ClientWritableStream<RequestType>;
+    makeClientStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, metadata: Metadata, callback: UnaryCallback<ResponseType>): ClientWritableStream<RequestType>;
+    makeClientStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, options: CallOptions, callback: UnaryCallback<ResponseType>): ClientWritableStream<RequestType>;
+    makeClientStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, callback: UnaryCallback<ResponseType>): ClientWritableStream<RequestType>;
+    private checkMetadataAndOptions;
+    makeServerStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, metadata: Metadata, options?: CallOptions): ClientReadableStream<ResponseType>;
+    makeServerStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, argument: RequestType, options?: CallOptions): ClientReadableStream<ResponseType>;
+    makeBidiStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, metadata: Metadata, options?: CallOptions): ClientDuplexStream<RequestType, ResponseType>;
+    makeBidiStreamRequest<RequestType, ResponseType>(method: string, serialize: (value: RequestType) => Buffer, deserialize: (value: Buffer) => ResponseType, options?: CallOptions): ClientDuplexStream<RequestType, ResponseType>;
+}
+export {};

node_modules/@grpc/grpc-js/build/src/client.js

@@ -0,0 +1,418 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Client = void 0;
+const call_1 = require("./call");
+const channel_1 = require("./channel");
+const connectivity_state_1 = require("./connectivity-state");
+const constants_1 = require("./constants");
+const metadata_1 = require("./metadata");
+const client_interceptors_1 = require("./client-interceptors");
+const CHANNEL_SYMBOL = Symbol();
+const INTERCEPTOR_SYMBOL = Symbol();
+const INTERCEPTOR_PROVIDER_SYMBOL = Symbol();
+const CALL_INVOCATION_TRANSFORMER_SYMBOL = Symbol();
+function isFunction(arg) {
+    return typeof arg === 'function';
+}
+/**
+ * A generic gRPC client. Primarily useful as a base class for all generated
+ * clients.
+ */
+class Client {
+    constructor(address, credentials, options = {}) {
+        var _a, _b;
+        options = Object.assign({}, options);
+        this[INTERCEPTOR_SYMBOL] = (_a = options.interceptors) !== null && _a !== void 0 ? _a : [];
+        delete options.interceptors;
+        this[INTERCEPTOR_PROVIDER_SYMBOL] = (_b = options.interceptor_providers) !== null && _b !== void 0 ? _b : [];
+        delete options.interceptor_providers;
+        if (this[INTERCEPTOR_SYMBOL].length > 0 &&
+            this[INTERCEPTOR_PROVIDER_SYMBOL].length > 0) {
+            throw new Error('Both interceptors and interceptor_providers were passed as options ' +
+                'to the client constructor. Only one of these is allowed.');
+        }
+        this[CALL_INVOCATION_TRANSFORMER_SYMBOL] =
+            options.callInvocationTransformer;
+        delete options.callInvocationTransformer;
+        if (options.channelOverride) {
+            this[CHANNEL_SYMBOL] = options.channelOverride;
+        }
+        else if (options.channelFactoryOverride) {
+            const channelFactoryOverride = options.channelFactoryOverride;
+            delete options.channelFactoryOverride;
+            this[CHANNEL_SYMBOL] = channelFactoryOverride(address, credentials, options);
+        }
+        else {
+            this[CHANNEL_SYMBOL] = new channel_1.ChannelImplementation(address, credentials, options);
+        }
+    }
+    close() {
+        this[CHANNEL_SYMBOL].close();
+    }
+    getChannel() {
+        return this[CHANNEL_SYMBOL];
+    }
+    waitForReady(deadline, callback) {
+        const checkState = (err) => {
+            if (err) {
+                callback(new Error('Failed to connect before the deadline'));
+                return;
+            }
+            let newState;
+            try {
+                newState = this[CHANNEL_SYMBOL].getConnectivityState(true);
+            }
+            catch (e) {
+                callback(new Error('The channel has been closed'));
+                return;
+            }
+            if (newState === connectivity_state_1.ConnectivityState.READY) {
+                callback();
+            }
+            else {
+                try {
+                    this[CHANNEL_SYMBOL].watchConnectivityState(newState, deadline, checkState);
+                }
+                catch (e) {
+                    callback(new Error('The channel has been closed'));
+                }
+            }
+        };
+        setImmediate(checkState);
+    }
+    checkOptionalUnaryResponseArguments(arg1, arg2, arg3) {
+        if (isFunction(arg1)) {
+            return { metadata: new metadata_1.Metadata(), options: {}, callback: arg1 };
+        }
+        else if (isFunction(arg2)) {
+            if (arg1 instanceof metadata_1.Metadata) {
+                return { metadata: arg1, options: {}, callback: arg2 };
+            }
+            else {
+                return { metadata: new metadata_1.Metadata(), options: arg1, callback: arg2 };
+            }
+        }
+        else {
+            if (!(arg1 instanceof metadata_1.Metadata &&
+                arg2 instanceof Object &&
+                isFunction(arg3))) {
+                throw new Error('Incorrect arguments passed');
+            }
+            return { metadata: arg1, options: arg2, callback: arg3 };
+        }
+    }
+    makeUnaryRequest(method, serialize, deserialize, argument, metadata, options, callback) {
+        var _a, _b;
+        const checkedArguments = this.checkOptionalUnaryResponseArguments(metadata, options, callback);
+        const methodDefinition = {
+            path: method,
+            requestStream: false,
+            responseStream: false,
+            requestSerialize: serialize,
+            responseDeserialize: deserialize,
+        };
+        let callProperties = {
+            argument: argument,
+            metadata: checkedArguments.metadata,
+            call: new call_1.ClientUnaryCallImpl(),
+            channel: this[CHANNEL_SYMBOL],
+            methodDefinition: methodDefinition,
+            callOptions: checkedArguments.options,
+            callback: checkedArguments.callback,
+        };
+        if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
+            callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL](callProperties);
+        }
+        const emitter = callProperties.call;
+        const interceptorArgs = {
+            clientInterceptors: this[INTERCEPTOR_SYMBOL],
+            clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
+            callInterceptors: (_a = callProperties.callOptions.interceptors) !== null && _a !== void 0 ? _a : [],
+            callInterceptorProviders: (_b = callProperties.callOptions.interceptor_providers) !== null && _b !== void 0 ? _b : [],
+        };
+        const call = client_interceptors_1.getInterceptingCall(interceptorArgs, callProperties.methodDefinition, callProperties.callOptions, callProperties.channel);
+        /* This needs to happen before the emitter is used. Unfortunately we can't
+         * enforce this with the type system. We need to construct this emitter
+         * before calling the CallInvocationTransformer, and we need to create the
+         * call after that. */
+        emitter.call = call;
+        if (callProperties.callOptions.credentials) {
+            call.setCredentials(callProperties.callOptions.credentials);
+        }
+        let responseMessage = null;
+        let receivedStatus = false;
+        call.start(callProperties.metadata, {
+            onReceiveMetadata: (metadata) => {
+                emitter.emit('metadata', metadata);
+            },
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            onReceiveMessage(message) {
+                if (responseMessage !== null) {
+                    call.cancelWithStatus(constants_1.Status.INTERNAL, 'Too many responses received');
+                }
+                responseMessage = message;
+            },
+            onReceiveStatus(status) {
+                if (receivedStatus) {
+                    return;
+                }
+                receivedStatus = true;
+                if (status.code === constants_1.Status.OK) {
+                    if (responseMessage === null) {
+                        callProperties.callback(call_1.callErrorFromStatus({
+                            code: constants_1.Status.INTERNAL,
+                            details: 'No message received',
+                            metadata: status.metadata
+                        }));
+                    }
+                    else {
+                        callProperties.callback(null, responseMessage);
+                    }
+                }
+                else {
+                    callProperties.callback(call_1.callErrorFromStatus(status));
+                }
+                emitter.emit('status', status);
+            },
+        });
+        call.sendMessage(argument);
+        call.halfClose();
+        return emitter;
+    }
+    makeClientStreamRequest(method, serialize, deserialize, metadata, options, callback) {
+        var _a, _b;
+        const checkedArguments = this.checkOptionalUnaryResponseArguments(metadata, options, callback);
+        const methodDefinition = {
+            path: method,
+            requestStream: true,
+            responseStream: false,
+            requestSerialize: serialize,
+            responseDeserialize: deserialize,
+        };
+        let callProperties = {
+            metadata: checkedArguments.metadata,
+            call: new call_1.ClientWritableStreamImpl(serialize),
+            channel: this[CHANNEL_SYMBOL],
+            methodDefinition: methodDefinition,
+            callOptions: checkedArguments.options,
+            callback: checkedArguments.callback,
+        };
+        if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
+            callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL](callProperties);
+        }
+        const emitter = callProperties.call;
+        const interceptorArgs = {
+            clientInterceptors: this[INTERCEPTOR_SYMBOL],
+            clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
+            callInterceptors: (_a = callProperties.callOptions.interceptors) !== null && _a !== void 0 ? _a : [],
+            callInterceptorProviders: (_b = callProperties.callOptions.interceptor_providers) !== null && _b !== void 0 ? _b : [],
+        };
+        const call = client_interceptors_1.getInterceptingCall(interceptorArgs, callProperties.methodDefinition, callProperties.callOptions, callProperties.channel);
+        /* This needs to happen before the emitter is used. Unfortunately we can't
+         * enforce this with the type system. We need to construct this emitter
+         * before calling the CallInvocationTransformer, and we need to create the
+         * call after that. */
+        emitter.call = call;
+        if (callProperties.callOptions.credentials) {
+            call.setCredentials(callProperties.callOptions.credentials);
+        }
+        let responseMessage = null;
+        let receivedStatus = false;
+        call.start(callProperties.metadata, {
+            onReceiveMetadata: (metadata) => {
+                emitter.emit('metadata', metadata);
+            },
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            onReceiveMessage(message) {
+                if (responseMessage !== null) {
+                    call.cancelWithStatus(constants_1.Status.INTERNAL, 'Too many responses received');
+                }
+                responseMessage = message;
+            },
+            onReceiveStatus(status) {
+                if (receivedStatus) {
+                    return;
+                }
+                receivedStatus = true;
+                if (status.code === constants_1.Status.OK) {
+                    if (responseMessage === null) {
+                        callProperties.callback(call_1.callErrorFromStatus({
+                            code: constants_1.Status.INTERNAL,
+                            details: 'No message received',
+                            metadata: status.metadata
+                        }));
+                    }
+                    else {
+                        callProperties.callback(null, responseMessage);
+                    }
+                }
+                else {
+                    callProperties.callback(call_1.callErrorFromStatus(status));
+                }
+                emitter.emit('status', status);
+            },
+        });
+        return emitter;
+    }
+    checkMetadataAndOptions(arg1, arg2) {
+        let metadata;
+        let options;
+        if (arg1 instanceof metadata_1.Metadata) {
+            metadata = arg1;
+            if (arg2) {
+                options = arg2;
+            }
+            else {
+                options = {};
+            }
+        }
+        else {
+            if (arg1) {
+                options = arg1;
+            }
+            else {
+                options = {};
+            }
+            metadata = new metadata_1.Metadata();
+        }
+        return { metadata, options };
+    }
+    makeServerStreamRequest(method, serialize, deserialize, argument, metadata, options) {
+        var _a, _b;
+        const checkedArguments = this.checkMetadataAndOptions(metadata, options);
+        const methodDefinition = {
+            path: method,
+            requestStream: false,
+            responseStream: true,
+            requestSerialize: serialize,
+            responseDeserialize: deserialize,
+        };
+        let callProperties = {
+            argument: argument,
+            metadata: checkedArguments.metadata,
+            call: new call_1.ClientReadableStreamImpl(deserialize),
+            channel: this[CHANNEL_SYMBOL],
+            methodDefinition: methodDefinition,
+            callOptions: checkedArguments.options,
+        };
+        if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
+            callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL](callProperties);
+        }
+        const stream = callProperties.call;
+        const interceptorArgs = {
+            clientInterceptors: this[INTERCEPTOR_SYMBOL],
+            clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
+            callInterceptors: (_a = callProperties.callOptions.interceptors) !== null && _a !== void 0 ? _a : [],
+            callInterceptorProviders: (_b = callProperties.callOptions.interceptor_providers) !== null && _b !== void 0 ? _b : [],
+        };
+        const call = client_interceptors_1.getInterceptingCall(interceptorArgs, callProperties.methodDefinition, callProperties.callOptions, callProperties.channel);
+        /* This needs to happen before the emitter is used. Unfortunately we can't
+         * enforce this with the type system. We need to construct this emitter
+         * before calling the CallInvocationTransformer, and we need to create the
+         * call after that. */
+        stream.call = call;
+        if (callProperties.callOptions.credentials) {
+            call.setCredentials(callProperties.callOptions.credentials);
+        }
+        let receivedStatus = false;
+        call.start(callProperties.metadata, {
+            onReceiveMetadata(metadata) {
+                stream.emit('metadata', metadata);
+            },
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            onReceiveMessage(message) {
+                stream.push(message);
+            },
+            onReceiveStatus(status) {
+                if (receivedStatus) {
+                    return;
+                }
+                receivedStatus = true;
+                stream.push(null);
+                if (status.code !== constants_1.Status.OK) {
+                    stream.emit('error', call_1.callErrorFromStatus(status));
+                }
+                stream.emit('status', status);
+            },
+        });
+        call.sendMessage(argument);
+        call.halfClose();
+        return stream;
+    }
+    makeBidiStreamRequest(method, serialize, deserialize, metadata, options) {
+        var _a, _b;
+        const checkedArguments = this.checkMetadataAndOptions(metadata, options);
+        const methodDefinition = {
+            path: method,
+            requestStream: true,
+            responseStream: true,
+            requestSerialize: serialize,
+            responseDeserialize: deserialize,
+        };
+        let callProperties = {
+            metadata: checkedArguments.metadata,
+            call: new call_1.ClientDuplexStreamImpl(serialize, deserialize),
+            channel: this[CHANNEL_SYMBOL],
+            methodDefinition: methodDefinition,
+            callOptions: checkedArguments.options,
+        };
+        if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
+            callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL](callProperties);
+        }
+        const stream = callProperties.call;
+        const interceptorArgs = {
+            clientInterceptors: this[INTERCEPTOR_SYMBOL],
+            clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
+            callInterceptors: (_a = callProperties.callOptions.interceptors) !== null && _a !== void 0 ? _a : [],
+            callInterceptorProviders: (_b = callProperties.callOptions.interceptor_providers) !== null && _b !== void 0 ? _b : [],
+        };
+        const call = client_interceptors_1.getInterceptingCall(interceptorArgs, callProperties.methodDefinition, callProperties.callOptions, callProperties.channel);
+        /* This needs to happen before the emitter is used. Unfortunately we can't
+         * enforce this with the type system. We need to construct this emitter
+         * before calling the CallInvocationTransformer, and we need to create the
+         * call after that. */
+        stream.call = call;
+        if (callProperties.callOptions.credentials) {
+            call.setCredentials(callProperties.callOptions.credentials);
+        }
+        let receivedStatus = false;
+        call.start(callProperties.metadata, {
+            onReceiveMetadata(metadata) {
+                stream.emit('metadata', metadata);
+            },
+            onReceiveMessage(message) {
+                stream.push(message);
+            },
+            onReceiveStatus(status) {
+                if (receivedStatus) {
+                    return;
+                }
+                receivedStatus = true;
+                stream.push(null);
+                if (status.code !== constants_1.Status.OK) {
+                    stream.emit('error', call_1.callErrorFromStatus(status));
+                }
+                stream.emit('status', status);
+            },
+        });
+        return stream;
+    }
+}
+exports.Client = Client;
+//# sourceMappingURL=client.js.map

node_modules/@grpc/grpc-js/build/src/compression-algorithms.d.ts

@@ -0,0 +1,5 @@
+export declare enum CompressionAlgorithms {
+    identity = 0,
+    deflate = 1,
+    gzip = 2
+}

node_modules/@grpc/grpc-js/build/src/compression-algorithms.js

@@ -0,0 +1,27 @@
+"use strict";
+/*
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CompressionAlgorithms = void 0;
+var CompressionAlgorithms;
+(function (CompressionAlgorithms) {
+    CompressionAlgorithms[CompressionAlgorithms["identity"] = 0] = "identity";
+    CompressionAlgorithms[CompressionAlgorithms["deflate"] = 1] = "deflate";
+    CompressionAlgorithms[CompressionAlgorithms["gzip"] = 2] = "gzip";
+})(CompressionAlgorithms = exports.CompressionAlgorithms || (exports.CompressionAlgorithms = {}));
+;
+//# sourceMappingURL=compression-algorithms.js.map

node_modules/@grpc/grpc-js/build/src/compression-algorithms.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"compression-algorithms.js","sourceRoot":"","sources":["../../src/compression-algorithms.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG;;;AAEH,IAAY,qBAIX;AAJD,WAAY,qBAAqB;IAC/B,yEAAY,CAAA;IACZ,uEAAW,CAAA;IACX,iEAAQ,CAAA;AACV,CAAC,EAJW,qBAAqB,GAArB,6BAAqB,KAArB,6BAAqB,QAIhC;AAAA,CAAC"}

node_modules/@grpc/grpc-js/build/src/compression-filter.d.ts

@@ -0,0 +1,28 @@
+/// <reference types="node" />
+import { Call, WriteObject } from './call-stream';
+import { Channel } from './channel';
+import { ChannelOptions } from './channel-options';
+import { BaseFilter, Filter, FilterFactory } from './filter';
+import { Metadata } from './metadata';
+declare type SharedCompressionFilterConfig = {
+    serverSupportedEncodingHeader?: string;
+};
+export declare class CompressionFilter extends BaseFilter implements Filter {
+    private sharedFilterConfig;
+    private sendCompression;
+    private receiveCompression;
+    private currentCompressionAlgorithm;
+    constructor(channelOptions: ChannelOptions, sharedFilterConfig: SharedCompressionFilterConfig);
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+    receiveMetadata(metadata: Metadata): Metadata;
+    sendMessage(message: Promise<WriteObject>): Promise<WriteObject>;
+    receiveMessage(message: Promise<Buffer>): Promise<Buffer>;
+}
+export declare class CompressionFilterFactory implements FilterFactory<CompressionFilter> {
+    private readonly channel;
+    private readonly options;
+    private sharedFilterConfig;
+    constructor(channel: Channel, options: ChannelOptions);
+    createFilter(callStream: Call): CompressionFilter;
+}
+export {};

node_modules/@grpc/grpc-js/build/src/compression-filter.js

@@ -0,0 +1,256 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CompressionFilterFactory = exports.CompressionFilter = void 0;
+const zlib = require("zlib");
+const compression_algorithms_1 = require("./compression-algorithms");
+const constants_1 = require("./constants");
+const filter_1 = require("./filter");
+const logging = require("./logging");
+const isCompressionAlgorithmKey = (key) => {
+    return typeof key === 'number' && typeof compression_algorithms_1.CompressionAlgorithms[key] === 'string';
+};
+class CompressionHandler {
+    /**
+     * @param message Raw uncompressed message bytes
+     * @param compress Indicates whether the message should be compressed
+     * @return Framed message, compressed if applicable
+     */
+    async writeMessage(message, compress) {
+        let messageBuffer = message;
+        if (compress) {
+            messageBuffer = await this.compressMessage(messageBuffer);
+        }
+        const output = Buffer.allocUnsafe(messageBuffer.length + 5);
+        output.writeUInt8(compress ? 1 : 0, 0);
+        output.writeUInt32BE(messageBuffer.length, 1);
+        messageBuffer.copy(output, 5);
+        return output;
+    }
+    /**
+     * @param data Framed message, possibly compressed
+     * @return Uncompressed message
+     */
+    async readMessage(data) {
+        const compressed = data.readUInt8(0) === 1;
+        let messageBuffer = data.slice(5);
+        if (compressed) {
+            messageBuffer = await this.decompressMessage(messageBuffer);
+        }
+        return messageBuffer;
+    }
+}
+class IdentityHandler extends CompressionHandler {
+    async compressMessage(message) {
+        return message;
+    }
+    async writeMessage(message, compress) {
+        const output = Buffer.allocUnsafe(message.length + 5);
+        /* With "identity" compression, messages should always be marked as
+         * uncompressed */
+        output.writeUInt8(0, 0);
+        output.writeUInt32BE(message.length, 1);
+        message.copy(output, 5);
+        return output;
+    }
+    decompressMessage(message) {
+        return Promise.reject(new Error('Received compressed message but "grpc-encoding" header was identity'));
+    }
+}
+class DeflateHandler extends CompressionHandler {
+    compressMessage(message) {
+        return new Promise((resolve, reject) => {
+            zlib.deflate(message, (err, output) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(output);
+                }
+            });
+        });
+    }
+    decompressMessage(message) {
+        return new Promise((resolve, reject) => {
+            zlib.inflate(message, (err, output) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(output);
+                }
+            });
+        });
+    }
+}
+class GzipHandler extends CompressionHandler {
+    compressMessage(message) {
+        return new Promise((resolve, reject) => {
+            zlib.gzip(message, (err, output) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(output);
+                }
+            });
+        });
+    }
+    decompressMessage(message) {
+        return new Promise((resolve, reject) => {
+            zlib.unzip(message, (err, output) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(output);
+                }
+            });
+        });
+    }
+}
+class UnknownHandler extends CompressionHandler {
+    constructor(compressionName) {
+        super();
+        this.compressionName = compressionName;
+    }
+    compressMessage(message) {
+        return Promise.reject(new Error(`Received message compressed with unsupported compression method ${this.compressionName}`));
+    }
+    decompressMessage(message) {
+        // This should be unreachable
+        return Promise.reject(new Error(`Compression method not supported: ${this.compressionName}`));
+    }
+}
+function getCompressionHandler(compressionName) {
+    switch (compressionName) {
+        case 'identity':
+            return new IdentityHandler();
+        case 'deflate':
+            return new DeflateHandler();
+        case 'gzip':
+            return new GzipHandler();
+        default:
+            return new UnknownHandler(compressionName);
+    }
+}
+class CompressionFilter extends filter_1.BaseFilter {
+    constructor(channelOptions, sharedFilterConfig) {
+        var _a;
+        super();
+        this.sharedFilterConfig = sharedFilterConfig;
+        this.sendCompression = new IdentityHandler();
+        this.receiveCompression = new IdentityHandler();
+        this.currentCompressionAlgorithm = 'identity';
+        const compressionAlgorithmKey = channelOptions['grpc.default_compression_algorithm'];
+        if (compressionAlgorithmKey !== undefined) {
+            if (isCompressionAlgorithmKey(compressionAlgorithmKey)) {
+                const clientSelectedEncoding = compression_algorithms_1.CompressionAlgorithms[compressionAlgorithmKey];
+                const serverSupportedEncodings = (_a = sharedFilterConfig.serverSupportedEncodingHeader) === null || _a === void 0 ? void 0 : _a.split(',');
+                /**
+                 * There are two possible situations here:
+                 * 1) We don't have any info yet from the server about what compression it supports
+                 *    In that case we should just use what the client tells us to use
+                 * 2) We've previously received a response from the server including a grpc-accept-encoding header
+                 *    In that case we only want to use the encoding chosen by the client if the server supports it
+                 */
+                if (!serverSupportedEncodings || serverSupportedEncodings.includes(clientSelectedEncoding)) {
+                    this.currentCompressionAlgorithm = clientSelectedEncoding;
+                    this.sendCompression = getCompressionHandler(this.currentCompressionAlgorithm);
+                }
+            }
+            else {
+                logging.log(constants_1.LogVerbosity.ERROR, `Invalid value provided for grpc.default_compression_algorithm option: ${compressionAlgorithmKey}`);
+            }
+        }
+    }
+    async sendMetadata(metadata) {
+        const headers = await metadata;
+        headers.set('grpc-accept-encoding', 'identity,deflate,gzip');
+        headers.set('accept-encoding', 'identity');
+        // No need to send the header if it's "identity" -  behavior is identical; save the bandwidth
+        if (this.currentCompressionAlgorithm === 'identity') {
+            headers.remove('grpc-encoding');
+        }
+        else {
+            headers.set('grpc-encoding', this.currentCompressionAlgorithm);
+        }
+        return headers;
+    }
+    receiveMetadata(metadata) {
+        const receiveEncoding = metadata.get('grpc-encoding');
+        if (receiveEncoding.length > 0) {
+            const encoding = receiveEncoding[0];
+            if (typeof encoding === 'string') {
+                this.receiveCompression = getCompressionHandler(encoding);
+            }
+        }
+        metadata.remove('grpc-encoding');
+        /* Check to see if the compression we're using to send messages is supported by the server
+         * If not, reset the sendCompression filter and have it use the default IdentityHandler */
+        const serverSupportedEncodingsHeader = metadata.get('grpc-accept-encoding')[0];
+        if (serverSupportedEncodingsHeader) {
+            this.sharedFilterConfig.serverSupportedEncodingHeader = serverSupportedEncodingsHeader;
+            const serverSupportedEncodings = serverSupportedEncodingsHeader.split(',');
+            if (!serverSupportedEncodings.includes(this.currentCompressionAlgorithm)) {
+                this.sendCompression = new IdentityHandler();
+                this.currentCompressionAlgorithm = 'identity';
+            }
+        }
+        metadata.remove('grpc-accept-encoding');
+        return metadata;
+    }
+    async sendMessage(message) {
+        var _a;
+        /* This filter is special. The input message is the bare message bytes,
+         * and the output is a framed and possibly compressed message. For this
+         * reason, this filter should be at the bottom of the filter stack */
+        const resolvedMessage = await message;
+        let compress;
+        if (this.sendCompression instanceof IdentityHandler) {
+            compress = false;
+        }
+        else {
+            compress = (((_a = resolvedMessage.flags) !== null && _a !== void 0 ? _a : 0) & 2 /* NoCompress */) === 0;
+        }
+        return {
+            message: await this.sendCompression.writeMessage(resolvedMessage.message, compress),
+            flags: resolvedMessage.flags,
+        };
+    }
+    async receiveMessage(message) {
+        /* This filter is also special. The input message is framed and possibly
+         * compressed, and the output message is deframed and uncompressed. So
+         * this is another reason that this filter should be at the bottom of the
+         * filter stack. */
+        return this.receiveCompression.readMessage(await message);
+    }
+}
+exports.CompressionFilter = CompressionFilter;
+class CompressionFilterFactory {
+    constructor(channel, options) {
+        this.channel = channel;
+        this.options = options;
+        this.sharedFilterConfig = {};
+    }
+    createFilter(callStream) {
+        return new CompressionFilter(this.options, this.sharedFilterConfig);
+    }
+}
+exports.CompressionFilterFactory = CompressionFilterFactory;
+//# sourceMappingURL=compression-filter.js.map

node_modules/@grpc/grpc-js/build/src/connectivity-state.d.ts

@@ -0,0 +1,7 @@
+export declare enum ConnectivityState {
+    IDLE = 0,
+    CONNECTING = 1,
+    READY = 2,
+    TRANSIENT_FAILURE = 3,
+    SHUTDOWN = 4
+}

node_modules/@grpc/grpc-js/build/src/connectivity-state.js

@@ -0,0 +1,28 @@
+"use strict";
+/*
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ConnectivityState = void 0;
+var ConnectivityState;
+(function (ConnectivityState) {
+    ConnectivityState[ConnectivityState["IDLE"] = 0] = "IDLE";
+    ConnectivityState[ConnectivityState["CONNECTING"] = 1] = "CONNECTING";
+    ConnectivityState[ConnectivityState["READY"] = 2] = "READY";
+    ConnectivityState[ConnectivityState["TRANSIENT_FAILURE"] = 3] = "TRANSIENT_FAILURE";
+    ConnectivityState[ConnectivityState["SHUTDOWN"] = 4] = "SHUTDOWN";
+})(ConnectivityState = exports.ConnectivityState || (exports.ConnectivityState = {}));
+//# sourceMappingURL=connectivity-state.js.map

node_modules/@grpc/grpc-js/build/src/connectivity-state.js.map

@@ -0,0 +1 @@
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node_modules/@grpc/grpc-js/build/src/constants.d.ts

@@ -0,0 +1,38 @@
+export declare enum Status {
+    OK = 0,
+    CANCELLED = 1,
+    UNKNOWN = 2,
+    INVALID_ARGUMENT = 3,
+    DEADLINE_EXCEEDED = 4,
+    NOT_FOUND = 5,
+    ALREADY_EXISTS = 6,
+    PERMISSION_DENIED = 7,
+    RESOURCE_EXHAUSTED = 8,
+    FAILED_PRECONDITION = 9,
+    ABORTED = 10,
+    OUT_OF_RANGE = 11,
+    UNIMPLEMENTED = 12,
+    INTERNAL = 13,
+    UNAVAILABLE = 14,
+    DATA_LOSS = 15,
+    UNAUTHENTICATED = 16
+}
+export declare enum LogVerbosity {
+    DEBUG = 0,
+    INFO = 1,
+    ERROR = 2,
+    NONE = 3
+}
+/**
+ * NOTE: This enum is not currently used in any implemented API in this
+ * library. It is included only for type parity with the other implementation.
+ */
+export declare enum Propagate {
+    DEADLINE = 1,
+    CENSUS_STATS_CONTEXT = 2,
+    CENSUS_TRACING_CONTEXT = 4,
+    CANCELLATION = 8,
+    DEFAULTS = 65535
+}
+export declare const DEFAULT_MAX_SEND_MESSAGE_LENGTH = -1;
+export declare const DEFAULT_MAX_RECEIVE_MESSAGE_LENGTH: number;

node_modules/@grpc/grpc-js/build/src/constants.js

@@ -0,0 +1,64 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DEFAULT_MAX_RECEIVE_MESSAGE_LENGTH = exports.DEFAULT_MAX_SEND_MESSAGE_LENGTH = exports.Propagate = exports.LogVerbosity = exports.Status = void 0;
+var Status;
+(function (Status) {
+    Status[Status["OK"] = 0] = "OK";
+    Status[Status["CANCELLED"] = 1] = "CANCELLED";
+    Status[Status["UNKNOWN"] = 2] = "UNKNOWN";
+    Status[Status["INVALID_ARGUMENT"] = 3] = "INVALID_ARGUMENT";
+    Status[Status["DEADLINE_EXCEEDED"] = 4] = "DEADLINE_EXCEEDED";
+    Status[Status["NOT_FOUND"] = 5] = "NOT_FOUND";
+    Status[Status["ALREADY_EXISTS"] = 6] = "ALREADY_EXISTS";
+    Status[Status["PERMISSION_DENIED"] = 7] = "PERMISSION_DENIED";
+    Status[Status["RESOURCE_EXHAUSTED"] = 8] = "RESOURCE_EXHAUSTED";
+    Status[Status["FAILED_PRECONDITION"] = 9] = "FAILED_PRECONDITION";
+    Status[Status["ABORTED"] = 10] = "ABORTED";
+    Status[Status["OUT_OF_RANGE"] = 11] = "OUT_OF_RANGE";
+    Status[Status["UNIMPLEMENTED"] = 12] = "UNIMPLEMENTED";
+    Status[Status["INTERNAL"] = 13] = "INTERNAL";
+    Status[Status["UNAVAILABLE"] = 14] = "UNAVAILABLE";
+    Status[Status["DATA_LOSS"] = 15] = "DATA_LOSS";
+    Status[Status["UNAUTHENTICATED"] = 16] = "UNAUTHENTICATED";
+})(Status = exports.Status || (exports.Status = {}));
+var LogVerbosity;
+(function (LogVerbosity) {
+    LogVerbosity[LogVerbosity["DEBUG"] = 0] = "DEBUG";
+    LogVerbosity[LogVerbosity["INFO"] = 1] = "INFO";
+    LogVerbosity[LogVerbosity["ERROR"] = 2] = "ERROR";
+    LogVerbosity[LogVerbosity["NONE"] = 3] = "NONE";
+})(LogVerbosity = exports.LogVerbosity || (exports.LogVerbosity = {}));
+/**
+ * NOTE: This enum is not currently used in any implemented API in this
+ * library. It is included only for type parity with the other implementation.
+ */
+var Propagate;
+(function (Propagate) {
+    Propagate[Propagate["DEADLINE"] = 1] = "DEADLINE";
+    Propagate[Propagate["CENSUS_STATS_CONTEXT"] = 2] = "CENSUS_STATS_CONTEXT";
+    Propagate[Propagate["CENSUS_TRACING_CONTEXT"] = 4] = "CENSUS_TRACING_CONTEXT";
+    Propagate[Propagate["CANCELLATION"] = 8] = "CANCELLATION";
+    // https://github.com/grpc/grpc/blob/master/include/grpc/impl/codegen/propagation_bits.h#L43
+    Propagate[Propagate["DEFAULTS"] = 65535] = "DEFAULTS";
+})(Propagate = exports.Propagate || (exports.Propagate = {}));
+// -1 means unlimited
+exports.DEFAULT_MAX_SEND_MESSAGE_LENGTH = -1;
+// 4 MB default
+exports.DEFAULT_MAX_RECEIVE_MESSAGE_LENGTH = 4 * 1024 * 1024;
+//# sourceMappingURL=constants.js.map

node_modules/@grpc/grpc-js/build/src/constants.js.map

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node_modules/@grpc/grpc-js/build/src/deadline-filter.d.ts

@@ -0,0 +1,21 @@
+import { Call, StatusObject } from './call-stream';
+import { Channel } from './channel';
+import { BaseFilter, Filter, FilterFactory } from './filter';
+import { Metadata } from './metadata';
+export declare class DeadlineFilter extends BaseFilter implements Filter {
+    private readonly channel;
+    private readonly callStream;
+    private timer;
+    private deadline;
+    constructor(channel: Channel, callStream: Call);
+    private retreiveDeadline;
+    private runTimer;
+    refresh(): void;
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+    receiveTrailers(status: StatusObject): StatusObject;
+}
+export declare class DeadlineFilterFactory implements FilterFactory<DeadlineFilter> {
+    private readonly channel;
+    constructor(channel: Channel);
+    createFilter(callStream: Call): DeadlineFilter;
+}

node_modules/@grpc/grpc-js/build/src/deadline-filter.js

@@ -0,0 +1,110 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DeadlineFilterFactory = exports.DeadlineFilter = void 0;
+const constants_1 = require("./constants");
+const filter_1 = require("./filter");
+const units = [
+    ['m', 1],
+    ['S', 1000],
+    ['M', 60 * 1000],
+    ['H', 60 * 60 * 1000],
+];
+function getDeadline(deadline) {
+    const now = new Date().getTime();
+    const timeoutMs = Math.max(deadline - now, 0);
+    for (const [unit, factor] of units) {
+        const amount = timeoutMs / factor;
+        if (amount < 1e8) {
+            return String(Math.ceil(amount)) + unit;
+        }
+    }
+    throw new Error('Deadline is too far in the future');
+}
+class DeadlineFilter extends filter_1.BaseFilter {
+    constructor(channel, callStream) {
+        super();
+        this.channel = channel;
+        this.callStream = callStream;
+        this.timer = null;
+        this.deadline = Infinity;
+        this.retreiveDeadline();
+        this.runTimer();
+    }
+    retreiveDeadline() {
+        const callDeadline = this.callStream.getDeadline();
+        if (callDeadline instanceof Date) {
+            this.deadline = callDeadline.getTime();
+        }
+        else {
+            this.deadline = callDeadline;
+        }
+    }
+    runTimer() {
+        var _a, _b;
+        if (this.timer) {
+            clearTimeout(this.timer);
+        }
+        const now = new Date().getTime();
+        const timeout = this.deadline - now;
+        if (timeout <= 0) {
+            process.nextTick(() => {
+                this.callStream.cancelWithStatus(constants_1.Status.DEADLINE_EXCEEDED, 'Deadline exceeded');
+            });
+        }
+        else if (this.deadline !== Infinity) {
+            this.timer = setTimeout(() => {
+                this.callStream.cancelWithStatus(constants_1.Status.DEADLINE_EXCEEDED, 'Deadline exceeded');
+            }, timeout);
+            (_b = (_a = this.timer).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
+        }
+    }
+    refresh() {
+        this.retreiveDeadline();
+        this.runTimer();
+    }
+    async sendMetadata(metadata) {
+        if (this.deadline === Infinity) {
+            return metadata;
+        }
+        /* The input metadata promise depends on the original channel.connect()
+         * promise, so when it is complete that implies that the channel is
+         * connected */
+        const finalMetadata = await metadata;
+        const timeoutString = getDeadline(this.deadline);
+        finalMetadata.set('grpc-timeout', timeoutString);
+        return finalMetadata;
+    }
+    receiveTrailers(status) {
+        if (this.timer) {
+            clearTimeout(this.timer);
+        }
+        return status;
+    }
+}
+exports.DeadlineFilter = DeadlineFilter;
+class DeadlineFilterFactory {
+    constructor(channel) {
+        this.channel = channel;
+    }
+    createFilter(callStream) {
+        return new DeadlineFilter(this.channel, callStream);
+    }
+}
+exports.DeadlineFilterFactory = DeadlineFilterFactory;
+//# sourceMappingURL=deadline-filter.js.map

node_modules/@grpc/grpc-js/build/src/deadline-filter.js.map

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node_modules/@grpc/grpc-js/build/src/duration.d.ts

@@ -0,0 +1,7 @@
+export interface Duration {
+    seconds: number;
+    nanos: number;
+}
+export declare function msToDuration(millis: number): Duration;
+export declare function durationToMs(duration: Duration): number;
+export declare function isDuration(value: any): value is Duration;

node_modules/@grpc/grpc-js/build/src/duration.js

@@ -0,0 +1,35 @@
+"use strict";
+/*
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isDuration = exports.durationToMs = exports.msToDuration = void 0;
+function msToDuration(millis) {
+    return {
+        seconds: (millis / 1000) | 0,
+        nanos: (millis % 1000) * 1000000 | 0
+    };
+}
+exports.msToDuration = msToDuration;
+function durationToMs(duration) {
+    return (duration.seconds * 1000 + duration.nanos / 1000000) | 0;
+}
+exports.durationToMs = durationToMs;
+function isDuration(value) {
+    return (typeof value.seconds === 'number') && (typeof value.nanos === 'number');
+}
+exports.isDuration = isDuration;
+//# sourceMappingURL=duration.js.map

node_modules/@grpc/grpc-js/build/src/duration.js.map

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node_modules/@grpc/grpc-js/build/src/events.d.ts

@@ -0,0 +1,9 @@
+export interface EmitterAugmentation1<Name extends string | symbol, Arg> {
+    addListener(event: Name, listener: (arg1: Arg) => void): this;
+    emit(event: Name, arg1: Arg): boolean;
+    on(event: Name, listener: (arg1: Arg) => void): this;
+    once(event: Name, listener: (arg1: Arg) => void): this;
+    prependListener(event: Name, listener: (arg1: Arg) => void): this;
+    prependOnceListener(event: Name, listener: (arg1: Arg) => void): this;
+    removeListener(event: Name, listener: (arg1: Arg) => void): this;
+}

node_modules/@grpc/grpc-js/build/src/events.js

@@ -0,0 +1,19 @@
+"use strict";
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=events.js.map

node_modules/@grpc/grpc-js/build/src/events.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"events.js","sourceRoot":"","sources":["../../src/events.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG"}

node_modules/@grpc/grpc-js/build/src/experimental.d.ts

@@ -0,0 +1,16 @@
+export { trace } from './logging';
+export { Resolver, ResolverListener, registerResolver, ConfigSelector, } from './resolver';
+export { GrpcUri, uriToString } from './uri-parser';
+export { Duration, durationToMs } from './duration';
+export { ServiceConfig } from './service-config';
+export { BackoffTimeout } from './backoff-timeout';
+export { LoadBalancer, LoadBalancingConfig, ChannelControlHelper, createChildChannelControlHelper, registerLoadBalancerType, getFirstUsableConfig, validateLoadBalancingConfig, } from './load-balancer';
+export { SubchannelAddress, subchannelAddressToString, } from './subchannel-address';
+export { ChildLoadBalancerHandler } from './load-balancer-child-handler';
+export { Picker, UnavailablePicker, QueuePicker, PickResult, PickArgs, PickResultType, } from './picker';
+export { Call as CallStream } from './call-stream';
+export { Filter, BaseFilter, FilterFactory } from './filter';
+export { FilterStackFactory } from './filter-stack';
+export { registerAdminService } from './admin';
+export { SubchannelInterface, BaseSubchannelWrapper, ConnectivityStateListener } from './subchannel-interface';
+export { OutlierDetectionLoadBalancingConfig, SuccessRateEjectionConfig, FailurePercentageEjectionConfig } from './load-balancer-outlier-detection';