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node_modules/mongodb/lib/mongo_client.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MongoClient = exports.ServerApiVersion = void 0;
+const util_1 = require("util");
+const bson_1 = require("./bson");
+const change_stream_1 = require("./change_stream");
+const mongo_credentials_1 = require("./cmap/auth/mongo_credentials");
+const providers_1 = require("./cmap/auth/providers");
+const connection_string_1 = require("./connection_string");
+const constants_1 = require("./constants");
+const db_1 = require("./db");
+const error_1 = require("./error");
+const mongo_logger_1 = require("./mongo_logger");
+const mongo_types_1 = require("./mongo_types");
+const read_preference_1 = require("./read_preference");
+const server_selection_1 = require("./sdam/server_selection");
+const topology_1 = require("./sdam/topology");
+const sessions_1 = require("./sessions");
+const utils_1 = require("./utils");
+/** @public */
+exports.ServerApiVersion = Object.freeze({
+    v1: '1'
+});
+/** @internal */
+const kOptions = Symbol('options');
+/**
+ * The **MongoClient** class is a class that allows for making Connections to MongoDB.
+ * @public
+ *
+ * @remarks
+ * The programmatically provided options take precedence over the URI options.
+ *
+ * @example
+ * ```ts
+ * import { MongoClient } from 'mongodb';
+ *
+ * // Enable command monitoring for debugging
+ * const client = new MongoClient('mongodb://localhost:27017', { monitorCommands: true });
+ *
+ * client.on('commandStarted', started => console.log(started));
+ * client.db().collection('pets');
+ * await client.insertOne({ name: 'spot', kind: 'dog' });
+ * ```
+ */
+class MongoClient extends mongo_types_1.TypedEventEmitter {
+    constructor(url, options) {
+        super();
+        this[kOptions] = (0, connection_string_1.parseOptions)(url, this, options);
+        this.mongoLogger = new mongo_logger_1.MongoLogger(this[kOptions].mongoLoggerOptions);
+        // eslint-disable-next-line @typescript-eslint/no-this-alias
+        const client = this;
+        // The internal state
+        this.s = {
+            url,
+            bsonOptions: (0, bson_1.resolveBSONOptions)(this[kOptions]),
+            namespace: (0, utils_1.ns)('admin'),
+            hasBeenClosed: false,
+            sessionPool: new sessions_1.ServerSessionPool(this),
+            activeSessions: new Set(),
+            get options() {
+                return client[kOptions];
+            },
+            get readConcern() {
+                return client[kOptions].readConcern;
+            },
+            get writeConcern() {
+                return client[kOptions].writeConcern;
+            },
+            get readPreference() {
+                return client[kOptions].readPreference;
+            },
+            get isMongoClient() {
+                return true;
+            }
+        };
+    }
+    /** @see MongoOptions */
+    get options() {
+        return Object.freeze({ ...this[kOptions] });
+    }
+    get serverApi() {
+        return this[kOptions].serverApi && Object.freeze({ ...this[kOptions].serverApi });
+    }
+    /**
+     * Intended for APM use only
+     * @internal
+     */
+    get monitorCommands() {
+        return this[kOptions].monitorCommands;
+    }
+    set monitorCommands(value) {
+        this[kOptions].monitorCommands = value;
+    }
+    get autoEncrypter() {
+        return this[kOptions].autoEncrypter;
+    }
+    get readConcern() {
+        return this.s.readConcern;
+    }
+    get writeConcern() {
+        return this.s.writeConcern;
+    }
+    get readPreference() {
+        return this.s.readPreference;
+    }
+    get bsonOptions() {
+        return this.s.bsonOptions;
+    }
+    /**
+     * Connect to MongoDB using a url
+     *
+     * @see docs.mongodb.org/manual/reference/connection-string/
+     */
+    async connect() {
+        if (this.connectionLock) {
+            return this.connectionLock;
+        }
+        try {
+            this.connectionLock = this._connect();
+            await this.connectionLock;
+        }
+        finally {
+            // release
+            this.connectionLock = undefined;
+        }
+        return this;
+    }
+    /**
+     * Create a topology to open the connection, must be locked to avoid topology leaks in concurrency scenario.
+     * Locking is enforced by the connect method.
+     *
+     * @internal
+     */
+    async _connect() {
+        if (this.topology && this.topology.isConnected()) {
+            return this;
+        }
+        const options = this[kOptions];
+        if (typeof options.srvHost === 'string') {
+            const hosts = await (0, connection_string_1.resolveSRVRecord)(options);
+            for (const [index, host] of hosts.entries()) {
+                options.hosts[index] = host;
+            }
+        }
+        // It is important to perform validation of hosts AFTER SRV resolution, to check the real hostname,
+        // but BEFORE we even attempt connecting with a potentially not allowed hostname
+        if (options.credentials?.mechanism === providers_1.AuthMechanism.MONGODB_OIDC) {
+            const allowedHosts = options.credentials?.mechanismProperties?.ALLOWED_HOSTS || mongo_credentials_1.DEFAULT_ALLOWED_HOSTS;
+            const isServiceAuth = !!options.credentials?.mechanismProperties?.PROVIDER_NAME;
+            if (!isServiceAuth) {
+                for (const host of options.hosts) {
+                    if (!(0, utils_1.hostMatchesWildcards)(host.toHostPort().host, allowedHosts)) {
+                        throw new error_1.MongoInvalidArgumentError(`Host '${host}' is not valid for OIDC authentication with ALLOWED_HOSTS of '${allowedHosts.join(',')}'`);
+                    }
+                }
+            }
+        }
+        this.topology = new topology_1.Topology(this, options.hosts, options);
+        // Events can be emitted before initialization is complete so we have to
+        // save the reference to the topology on the client ASAP if the event handlers need to access it
+        this.topology.once(topology_1.Topology.OPEN, () => this.emit('open', this));
+        for (const event of constants_1.MONGO_CLIENT_EVENTS) {
+            this.topology.on(event, (...args) => this.emit(event, ...args));
+        }
+        const topologyConnect = async () => {
+            try {
+                await (0, util_1.promisify)(callback => this.topology?.connect(options, callback))();
+            }
+            catch (error) {
+                this.topology?.close({ force: true });
+                throw error;
+            }
+        };
+        if (this.autoEncrypter) {
+            const initAutoEncrypter = (0, util_1.promisify)(callback => this.autoEncrypter?.init(callback));
+            await initAutoEncrypter();
+            await topologyConnect();
+            await options.encrypter.connectInternalClient();
+        }
+        else {
+            await topologyConnect();
+        }
+        return this;
+    }
+    /**
+     * Close the client and its underlying connections
+     *
+     * @param force - Force close, emitting no events
+     */
+    async close(force = false) {
+        // There's no way to set hasBeenClosed back to false
+        Object.defineProperty(this.s, 'hasBeenClosed', {
+            value: true,
+            enumerable: true,
+            configurable: false,
+            writable: false
+        });
+        const activeSessionEnds = Array.from(this.s.activeSessions, session => session.endSession());
+        this.s.activeSessions.clear();
+        await Promise.all(activeSessionEnds);
+        if (this.topology == null) {
+            return;
+        }
+        // If we would attempt to select a server and get nothing back we short circuit
+        // to avoid the server selection timeout.
+        const selector = (0, server_selection_1.readPreferenceServerSelector)(read_preference_1.ReadPreference.primaryPreferred);
+        const topologyDescription = this.topology.description;
+        const serverDescriptions = Array.from(topologyDescription.servers.values());
+        const servers = selector(topologyDescription, serverDescriptions);
+        if (servers.length !== 0) {
+            const endSessions = Array.from(this.s.sessionPool.sessions, ({ id }) => id);
+            if (endSessions.length !== 0) {
+                await this.db('admin')
+                    .command({ endSessions }, { readPreference: read_preference_1.ReadPreference.primaryPreferred, noResponse: true })
+                    .catch(() => null); // outcome does not matter
+            }
+        }
+        // clear out references to old topology
+        const topology = this.topology;
+        this.topology = undefined;
+        await new Promise((resolve, reject) => {
+            topology.close({ force }, error => {
+                if (error)
+                    return reject(error);
+                const { encrypter } = this[kOptions];
+                if (encrypter) {
+                    return encrypter.close(this, force, error => {
+                        if (error)
+                            return reject(error);
+                        resolve();
+                    });
+                }
+                resolve();
+            });
+        });
+    }
+    /**
+     * Create a new Db instance sharing the current socket connections.
+     *
+     * @param dbName - The name of the database we want to use. If not provided, use database name from connection string.
+     * @param options - Optional settings for Db construction
+     */
+    db(dbName, options) {
+        options = options ?? {};
+        // Default to db from connection string if not provided
+        if (!dbName) {
+            dbName = this.options.dbName;
+        }
+        // Copy the options and add out internal override of the not shared flag
+        const finalOptions = Object.assign({}, this[kOptions], options);
+        // Return the db object
+        const db = new db_1.Db(this, dbName, finalOptions);
+        // Return the database
+        return db;
+    }
+    /**
+     * Connect to MongoDB using a url
+     *
+     * @remarks
+     * The programmatically provided options take precedence over the URI options.
+     *
+     * @see https://www.mongodb.com/docs/manual/reference/connection-string/
+     */
+    static async connect(url, options) {
+        const client = new this(url, options);
+        return client.connect();
+    }
+    /** Starts a new session on the server */
+    startSession(options) {
+        const session = new sessions_1.ClientSession(this, this.s.sessionPool, { explicit: true, ...options }, this[kOptions]);
+        this.s.activeSessions.add(session);
+        session.once('ended', () => {
+            this.s.activeSessions.delete(session);
+        });
+        return session;
+    }
+    async withSession(optionsOrOperation, callback) {
+        const options = {
+            // Always define an owner
+            owner: Symbol(),
+            // If it's an object inherit the options
+            ...(typeof optionsOrOperation === 'object' ? optionsOrOperation : {})
+        };
+        const withSessionCallback = typeof optionsOrOperation === 'function' ? optionsOrOperation : callback;
+        if (withSessionCallback == null) {
+            throw new error_1.MongoInvalidArgumentError('Missing required callback parameter');
+        }
+        const session = this.startSession(options);
+        try {
+            await withSessionCallback(session);
+        }
+        finally {
+            try {
+                await session.endSession();
+            }
+            catch {
+                // We are not concerned with errors from endSession()
+            }
+        }
+    }
+    /**
+     * Create a new Change Stream, watching for new changes (insertions, updates,
+     * replacements, deletions, and invalidations) in this cluster. Will ignore all
+     * changes to system collections, as well as the local, admin, and config databases.
+     *
+     * @remarks
+     * watch() accepts two generic arguments for distinct use cases:
+     * - The first is to provide the schema that may be defined for all the data within the current cluster
+     * - The second is to override the shape of the change stream document entirely, if it is not provided the type will default to ChangeStreamDocument of the first argument
+     *
+     * @param pipeline - An array of {@link https://www.mongodb.com/docs/manual/reference/operator/aggregation-pipeline/|aggregation pipeline stages} through which to pass change stream documents. This allows for filtering (using $match) and manipulating the change stream documents.
+     * @param options - Optional settings for the command
+     * @typeParam TSchema - Type of the data being detected by the change stream
+     * @typeParam TChange - Type of the whole change stream document emitted
+     */
+    watch(pipeline = [], options = {}) {
+        // Allow optionally not specifying a pipeline
+        if (!Array.isArray(pipeline)) {
+            options = pipeline;
+            pipeline = [];
+        }
+        return new change_stream_1.ChangeStream(this, pipeline, (0, utils_1.resolveOptions)(this, options));
+    }
+}
+exports.MongoClient = MongoClient;
+//# sourceMappingURL=mongo_client.js.map