first commit

node_modules/@grpc/grpc-js/LICENSE

@@ -0,0 +1,201 @@
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node_modules/@grpc/grpc-js/README.md

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+# 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

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+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

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+"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

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+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

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+"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

@@ -0,0 +1 @@
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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

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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

@@ -0,0 +1 @@
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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

@@ -0,0 +1 @@
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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

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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 @@
+{"version":3,"file":"connectivity-state.js","sourceRoot":"","sources":["../../src/connectivity-state.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG;;;AAEH,IAAY,iBAMX;AAND,WAAY,iBAAiB;IAC3B,yDAAI,CAAA;IACJ,qEAAU,CAAA;IACV,2DAAK,CAAA;IACL,mFAAiB,CAAA;IACjB,iEAAQ,CAAA;AACV,CAAC,EANW,iBAAiB,GAAjB,yBAAiB,KAAjB,yBAAiB,QAM5B"}

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

@@ -0,0 +1 @@
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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

@@ -0,0 +1 @@
+{"version":3,"file":"duration.js","sourceRoot":"","sources":["../../src/duration.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG;;;AAOH,SAAgB,YAAY,CAAC,MAAc;IACzC,OAAO;QACL,OAAO,EAAE,CAAC,MAAM,GAAG,IAAI,CAAC,GAAG,CAAC;QAC5B,KAAK,EAAE,CAAC,MAAM,GAAG,IAAI,CAAC,GAAG,OAAS,GAAG,CAAC;KACvC,CAAC;AACJ,CAAC;AALD,oCAKC;AAED,SAAgB,YAAY,CAAC,QAAkB;IAC7C,OAAO,CAAC,QAAQ,CAAC,OAAO,GAAG,IAAI,GAAG,QAAQ,CAAC,KAAK,GAAG,OAAS,CAAC,GAAG,CAAC,CAAC;AACpE,CAAC;AAFD,oCAEC;AAED,SAAgB,UAAU,CAAC,KAAU;IACnC,OAAO,CAAC,OAAO,KAAK,CAAC,OAAO,KAAK,QAAQ,CAAC,IAAI,CAAC,OAAO,KAAK,CAAC,KAAK,KAAK,QAAQ,CAAC,CAAC;AAClF,CAAC;AAFD,gCAEC"}

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';

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

@@ -0,0 +1,36 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var logging_1 = require("./logging");
+Object.defineProperty(exports, "trace", { enumerable: true, get: function () { return logging_1.trace; } });
+var resolver_1 = require("./resolver");
+Object.defineProperty(exports, "registerResolver", { enumerable: true, get: function () { return resolver_1.registerResolver; } });
+var uri_parser_1 = require("./uri-parser");
+Object.defineProperty(exports, "uriToString", { enumerable: true, get: function () { return uri_parser_1.uriToString; } });
+var duration_1 = require("./duration");
+Object.defineProperty(exports, "durationToMs", { enumerable: true, get: function () { return duration_1.durationToMs; } });
+var backoff_timeout_1 = require("./backoff-timeout");
+Object.defineProperty(exports, "BackoffTimeout", { enumerable: true, get: function () { return backoff_timeout_1.BackoffTimeout; } });
+var load_balancer_1 = require("./load-balancer");
+Object.defineProperty(exports, "createChildChannelControlHelper", { enumerable: true, get: function () { return load_balancer_1.createChildChannelControlHelper; } });
+Object.defineProperty(exports, "registerLoadBalancerType", { enumerable: true, get: function () { return load_balancer_1.registerLoadBalancerType; } });
+Object.defineProperty(exports, "getFirstUsableConfig", { enumerable: true, get: function () { return load_balancer_1.getFirstUsableConfig; } });
+Object.defineProperty(exports, "validateLoadBalancingConfig", { enumerable: true, get: function () { return load_balancer_1.validateLoadBalancingConfig; } });
+var subchannel_address_1 = require("./subchannel-address");
+Object.defineProperty(exports, "subchannelAddressToString", { enumerable: true, get: function () { return subchannel_address_1.subchannelAddressToString; } });
+var load_balancer_child_handler_1 = require("./load-balancer-child-handler");
+Object.defineProperty(exports, "ChildLoadBalancerHandler", { enumerable: true, get: function () { return load_balancer_child_handler_1.ChildLoadBalancerHandler; } });
+var picker_1 = require("./picker");
+Object.defineProperty(exports, "UnavailablePicker", { enumerable: true, get: function () { return picker_1.UnavailablePicker; } });
+Object.defineProperty(exports, "QueuePicker", { enumerable: true, get: function () { return picker_1.QueuePicker; } });
+Object.defineProperty(exports, "PickResultType", { enumerable: true, get: function () { return picker_1.PickResultType; } });
+var filter_1 = require("./filter");
+Object.defineProperty(exports, "BaseFilter", { enumerable: true, get: function () { return filter_1.BaseFilter; } });
+var filter_stack_1 = require("./filter-stack");
+Object.defineProperty(exports, "FilterStackFactory", { enumerable: true, get: function () { return filter_stack_1.FilterStackFactory; } });
+var admin_1 = require("./admin");
+Object.defineProperty(exports, "registerAdminService", { enumerable: true, get: function () { return admin_1.registerAdminService; } });
+var subchannel_interface_1 = require("./subchannel-interface");
+Object.defineProperty(exports, "BaseSubchannelWrapper", { enumerable: true, get: function () { return subchannel_interface_1.BaseSubchannelWrapper; } });
+var load_balancer_outlier_detection_1 = require("./load-balancer-outlier-detection");
+Object.defineProperty(exports, "OutlierDetectionLoadBalancingConfig", { enumerable: true, get: function () { return load_balancer_outlier_detection_1.OutlierDetectionLoadBalancingConfig; } });
+//# sourceMappingURL=experimental.js.map

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

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

@@ -0,0 +1,22 @@
+/// <reference types="node" />
+import { Call, StatusObject, WriteObject } from './call-stream';
+import { Filter, FilterFactory } from './filter';
+import { Metadata } from './metadata';
+export declare class FilterStack implements Filter {
+    private readonly filters;
+    constructor(filters: Filter[]);
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+    receiveMetadata(metadata: Metadata): Metadata;
+    sendMessage(message: Promise<WriteObject>): Promise<WriteObject>;
+    receiveMessage(message: Promise<Buffer>): Promise<Buffer>;
+    receiveTrailers(status: StatusObject): StatusObject;
+    refresh(): void;
+    push(filters: Filter[]): void;
+    getFilters(): Filter[];
+}
+export declare class FilterStackFactory implements FilterFactory<FilterStack> {
+    private readonly factories;
+    constructor(factories: Array<FilterFactory<Filter>>);
+    push(filterFactories: FilterFactory<Filter>[]): void;
+    createFilter(callStream: Call): FilterStack;
+}

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

@@ -0,0 +1,84 @@
+"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.FilterStackFactory = exports.FilterStack = void 0;
+class FilterStack {
+    constructor(filters) {
+        this.filters = filters;
+    }
+    sendMetadata(metadata) {
+        let result = metadata;
+        for (let i = 0; i < this.filters.length; i++) {
+            result = this.filters[i].sendMetadata(result);
+        }
+        return result;
+    }
+    receiveMetadata(metadata) {
+        let result = metadata;
+        for (let i = this.filters.length - 1; i >= 0; i--) {
+            result = this.filters[i].receiveMetadata(result);
+        }
+        return result;
+    }
+    sendMessage(message) {
+        let result = message;
+        for (let i = 0; i < this.filters.length; i++) {
+            result = this.filters[i].sendMessage(result);
+        }
+        return result;
+    }
+    receiveMessage(message) {
+        let result = message;
+        for (let i = this.filters.length - 1; i >= 0; i--) {
+            result = this.filters[i].receiveMessage(result);
+        }
+        return result;
+    }
+    receiveTrailers(status) {
+        let result = status;
+        for (let i = this.filters.length - 1; i >= 0; i--) {
+            result = this.filters[i].receiveTrailers(result);
+        }
+        return result;
+    }
+    refresh() {
+        for (const filter of this.filters) {
+            filter.refresh();
+        }
+    }
+    push(filters) {
+        this.filters.unshift(...filters);
+    }
+    getFilters() {
+        return this.filters;
+    }
+}
+exports.FilterStack = FilterStack;
+class FilterStackFactory {
+    constructor(factories) {
+        this.factories = factories;
+    }
+    push(filterFactories) {
+        this.factories.unshift(...filterFactories);
+    }
+    createFilter(callStream) {
+        return new FilterStack(this.factories.map((factory) => factory.createFilter(callStream)));
+    }
+}
+exports.FilterStackFactory = FilterStackFactory;
+//# sourceMappingURL=filter-stack.js.map

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

@@ -0,0 +1 @@
+{"version":3,"file":"filter-stack.js","sourceRoot":"","sources":["../../src/filter-stack.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG;;;AAMH,MAAa,WAAW;IACtB,YAA6B,OAAiB;QAAjB,YAAO,GAAP,OAAO,CAAU;IAAG,CAAC;IAElD,YAAY,CAAC,QAA2B;QACtC,IAAI,MAAM,GAAsB,QAAQ,CAAC;QAEzC,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;YAC5C,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC;SAC/C;QAED,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,eAAe,CAAC,QAAkB;QAChC,IAAI,MAAM,GAAa,QAAQ,CAAC;QAEhC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACjD,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,eAAe,CAAC,MAAM,CAAC,CAAC;SAClD;QAED,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,WAAW,CAAC,OAA6B;QACvC,IAAI,MAAM,GAAyB,OAAO,CAAC;QAE3C,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;YAC5C,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,WAAW,CAAC,MAAM,CAAC,CAAC;SAC9C;QAED,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,cAAc,CAAC,OAAwB;QACrC,IAAI,MAAM,GAAoB,OAAO,CAAC;QAEtC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACjD,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC;SACjD;QAED,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,eAAe,CAAC,MAAoB;QAClC,IAAI,MAAM,GAAiB,MAAM,CAAC;QAElC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACjD,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,eAAe,CAAC,MAAM,CAAC,CAAC;SAClD;QAED,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,OAAO;QACL,KAAK,MAAM,MAAM,IAAI,IAAI,CAAC,OAAO,EAAE;YACjC,MAAM,CAAC,OAAO,EAAE,CAAC;SAClB;IACH,CAAC;IAED,IAAI,CAAC,OAAiB;QACpB,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,GAAG,OAAO,CAAC,CAAC;IACnC,CAAC;IAED,UAAU;QACR,OAAO,IAAI,CAAC,OAAO,CAAC;IACtB,CAAC;CACF;AAlED,kCAkEC;AAED,MAAa,kBAAkB;IAC7B,YAA6B,SAAuC;QAAvC,cAAS,GAAT,SAAS,CAA8B;IAAG,CAAC;IAExE,IAAI,CAAC,eAAwC;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,GAAG,eAAe,CAAC,CAAC;IAC7C,CAAC;IAED,YAAY,CAAC,UAAgB;QAC3B,OAAO,IAAI,WAAW,CACpB,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,CAAC,OAAO,EAAE,EAAE,CAAC,OAAO,CAAC,YAAY,CAAC,UAAU,CAAC,CAAC,CAClE,CAAC;IACJ,CAAC;CACF;AAZD,gDAYC"}

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

@@ -0,0 +1,26 @@
+/// <reference types="node" />
+import { Call, StatusObject, WriteObject } from './call-stream';
+import { Metadata } from './metadata';
+/**
+ * Filter classes represent related per-call logic and state that is primarily
+ * used to modify incoming and outgoing data
+ */
+export interface Filter {
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+    receiveMetadata(metadata: Metadata): Metadata;
+    sendMessage(message: Promise<WriteObject>): Promise<WriteObject>;
+    receiveMessage(message: Promise<Buffer>): Promise<Buffer>;
+    receiveTrailers(status: StatusObject): StatusObject;
+    refresh(): void;
+}
+export declare abstract class BaseFilter implements Filter {
+    sendMetadata(metadata: Promise<Metadata>): Promise<Metadata>;
+    receiveMetadata(metadata: Metadata): Metadata;
+    sendMessage(message: Promise<WriteObject>): Promise<WriteObject>;
+    receiveMessage(message: Promise<Buffer>): Promise<Buffer>;
+    receiveTrailers(status: StatusObject): StatusObject;
+    refresh(): void;
+}
+export interface FilterFactory<T extends Filter> {
+    createFilter(callStream: Call): T;
+}

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

@@ -0,0 +1,39 @@
+"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.BaseFilter = void 0;
+class BaseFilter {
+    async sendMetadata(metadata) {
+        return metadata;
+    }
+    receiveMetadata(metadata) {
+        return metadata;
+    }
+    async sendMessage(message) {
+        return message;
+    }
+    async receiveMessage(message) {
+        return message;
+    }
+    receiveTrailers(status) {
+        return status;
+    }
+    refresh() { }
+}
+exports.BaseFilter = BaseFilter;
+//# sourceMappingURL=filter.js.map

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

@@ -0,0 +1 @@
+{"version":3,"file":"filter.js","sourceRoot":"","sources":["../../src/filter.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;GAeG;;;AAuBH,MAAsB,UAAU;IAC9B,KAAK,CAAC,YAAY,CAAC,QAA2B;QAC5C,OAAO,QAAQ,CAAC;IAClB,CAAC;IAED,eAAe,CAAC,QAAkB;QAChC,OAAO,QAAQ,CAAC;IAClB,CAAC;IAED,KAAK,CAAC,WAAW,CAAC,OAA6B;QAC7C,OAAO,OAAO,CAAC;IACjB,CAAC;IAED,KAAK,CAAC,cAAc,CAAC,OAAwB;QAC3C,OAAO,OAAO,CAAC;IACjB,CAAC;IAED,eAAe,CAAC,MAAoB;QAClC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,OAAO,KAAU,CAAC;CACnB;AAtBD,gCAsBC"}

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

@@ -0,0 +1,72 @@
+import type * as grpc from '../index';
+import type { MessageTypeDefinition } from '@grpc/proto-loader';
+import type { ChannelzClient as _grpc_channelz_v1_ChannelzClient, ChannelzDefinition as _grpc_channelz_v1_ChannelzDefinition } from './grpc/channelz/v1/Channelz';
+declare type SubtypeConstructor<Constructor extends new (...args: any) => any, Subtype> = {
+    new (...args: ConstructorParameters<Constructor>): Subtype;
+};
+export interface ProtoGrpcType {
+    google: {
+        protobuf: {
+            Any: MessageTypeDefinition;
+            BoolValue: MessageTypeDefinition;
+            BytesValue: MessageTypeDefinition;
+            DoubleValue: MessageTypeDefinition;
+            Duration: MessageTypeDefinition;
+            FloatValue: MessageTypeDefinition;
+            Int32Value: MessageTypeDefinition;
+            Int64Value: MessageTypeDefinition;
+            StringValue: MessageTypeDefinition;
+            Timestamp: MessageTypeDefinition;
+            UInt32Value: MessageTypeDefinition;
+            UInt64Value: MessageTypeDefinition;
+        };
+    };
+    grpc: {
+        channelz: {
+            v1: {
+                Address: MessageTypeDefinition;
+                Channel: MessageTypeDefinition;
+                ChannelConnectivityState: MessageTypeDefinition;
+                ChannelData: MessageTypeDefinition;
+                ChannelRef: MessageTypeDefinition;
+                ChannelTrace: MessageTypeDefinition;
+                ChannelTraceEvent: MessageTypeDefinition;
+                /**
+                 * Channelz is a service exposed by gRPC servers that provides detailed debug
+                 * information.
+                 */
+                Channelz: SubtypeConstructor<typeof grpc.Client, _grpc_channelz_v1_ChannelzClient> & {
+                    service: _grpc_channelz_v1_ChannelzDefinition;
+                };
+                GetChannelRequest: MessageTypeDefinition;
+                GetChannelResponse: MessageTypeDefinition;
+                GetServerRequest: MessageTypeDefinition;
+                GetServerResponse: MessageTypeDefinition;
+                GetServerSocketsRequest: MessageTypeDefinition;
+                GetServerSocketsResponse: MessageTypeDefinition;
+                GetServersRequest: MessageTypeDefinition;
+                GetServersResponse: MessageTypeDefinition;
+                GetSocketRequest: MessageTypeDefinition;
+                GetSocketResponse: MessageTypeDefinition;
+                GetSubchannelRequest: MessageTypeDefinition;
+                GetSubchannelResponse: MessageTypeDefinition;
+                GetTopChannelsRequest: MessageTypeDefinition;
+                GetTopChannelsResponse: MessageTypeDefinition;
+                Security: MessageTypeDefinition;
+                Server: MessageTypeDefinition;
+                ServerData: MessageTypeDefinition;
+                ServerRef: MessageTypeDefinition;
+                Socket: MessageTypeDefinition;
+                SocketData: MessageTypeDefinition;
+                SocketOption: MessageTypeDefinition;
+                SocketOptionLinger: MessageTypeDefinition;
+                SocketOptionTcpInfo: MessageTypeDefinition;
+                SocketOptionTimeout: MessageTypeDefinition;
+                SocketRef: MessageTypeDefinition;
+                Subchannel: MessageTypeDefinition;
+                SubchannelRef: MessageTypeDefinition;
+            };
+        };
+    };
+}
+export {};

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

@@ -0,0 +1,3 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=channelz.js.map

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

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

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Any.d.ts

@@ -0,0 +1,10 @@
+/// <reference types="node" />
+import type { AnyExtension } from '@grpc/proto-loader';
+export declare type Any = AnyExtension | {
+    type_url: string;
+    value: Buffer | Uint8Array | string;
+};
+export interface Any__Output {
+    'type_url': (string);
+    'value': (Buffer);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Any.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=Any.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Any.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"Any.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/Any.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BoolValue.d.ts

@@ -0,0 +1,6 @@
+export interface BoolValue {
+    'value'?: (boolean);
+}
+export interface BoolValue__Output {
+    'value': (boolean);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BoolValue.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=BoolValue.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BoolValue.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"BoolValue.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/BoolValue.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BytesValue.d.ts

@@ -0,0 +1,7 @@
+/// <reference types="node" />
+export interface BytesValue {
+    'value'?: (Buffer | Uint8Array | string);
+}
+export interface BytesValue__Output {
+    'value': (Buffer);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BytesValue.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=BytesValue.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/BytesValue.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"BytesValue.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/BytesValue.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/DoubleValue.d.ts

@@ -0,0 +1,6 @@
+export interface DoubleValue {
+    'value'?: (number | string);
+}
+export interface DoubleValue__Output {
+    'value': (number);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/DoubleValue.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=DoubleValue.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/DoubleValue.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"DoubleValue.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/DoubleValue.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Duration.d.ts

@@ -0,0 +1,10 @@
+/// <reference types="long" />
+import type { Long } from '@grpc/proto-loader';
+export interface Duration {
+    'seconds'?: (number | string | Long);
+    'nanos'?: (number);
+}
+export interface Duration__Output {
+    'seconds': (string);
+    'nanos': (number);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Duration.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=Duration.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Duration.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"Duration.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/Duration.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/FloatValue.d.ts

@@ -0,0 +1,6 @@
+export interface FloatValue {
+    'value'?: (number | string);
+}
+export interface FloatValue__Output {
+    'value': (number);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/FloatValue.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=FloatValue.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/FloatValue.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"FloatValue.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/FloatValue.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int32Value.d.ts

@@ -0,0 +1,6 @@
+export interface Int32Value {
+    'value'?: (number);
+}
+export interface Int32Value__Output {
+    'value': (number);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int32Value.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=Int32Value.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int32Value.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"Int32Value.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/Int32Value.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int64Value.d.ts

@@ -0,0 +1,8 @@
+/// <reference types="long" />
+import type { Long } from '@grpc/proto-loader';
+export interface Int64Value {
+    'value'?: (number | string | Long);
+}
+export interface Int64Value__Output {
+    'value': (string);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int64Value.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=Int64Value.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Int64Value.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"Int64Value.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/Int64Value.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/StringValue.d.ts

@@ -0,0 +1,6 @@
+export interface StringValue {
+    'value'?: (string);
+}
+export interface StringValue__Output {
+    'value': (string);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/StringValue.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=StringValue.js.map

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/StringValue.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"StringValue.js","sourceRoot":"","sources":["../../../../../src/generated/google/protobuf/StringValue.ts"],"names":[],"mappings":";AAAA,sBAAsB"}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Timestamp.d.ts

@@ -0,0 +1,10 @@
+/// <reference types="long" />
+import type { Long } from '@grpc/proto-loader';
+export interface Timestamp {
+    'seconds'?: (number | string | Long);
+    'nanos'?: (number);
+}
+export interface Timestamp__Output {
+    'seconds': (string);
+    'nanos': (number);
+}

node_modules/@grpc/grpc-js/build/src/generated/google/protobuf/Timestamp.js

@@ -0,0 +1,4 @@
+"use strict";
+// Original file: null
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=Timestamp.js.map