mcp-mongo-server/build/mongo.js

A Model Context Protocol server for MongoDB connections

import { MongoClient, ReadPreference } from "mongodb";
/**
 * Initialize MongoDB connection
 * @param url MongoDB connection string
 * @param readOnly Whether to connect in read-only mode
 * @returns Object containing client, db, connection status, and read-only mode
 */
export async function connectToMongoDB(url, readOnly) {
    try {
        const options = readOnly
            ? { readPreference: ReadPreference.SECONDARY }
            : {};
        const client = new MongoClient(url, options);
        await client.connect();
        const db = client.db();
        console.warn(`Connected to MongoDB database: ${db.databaseName}`);
        return {
            client,
            db,
            isConnected: true,
            isReadOnlyMode: readOnly,
        };
    }
    catch (error) {
        console.error("Failed to connect to MongoDB:", error);
        return {
            client: null,
            db: null,
            isConnected: false,
            isReadOnlyMode: readOnly,
        };
    }
}