kafka-ts/dist/broker.js

**KafkaTS** is a Apache Kafka client library for Node.js. It provides both a low-level API for communicating directly with the Apache Kafka cluster and high-level APIs for publishing and subscribing to Kafka topics.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Broker = void 0;
const api_1 = require("./api");
const connection_1 = require("./connection");
class Broker {
    options;
    connection;
    sendRequest;
    constructor(options) {
        this.options = options;
        this.connection = new connection_1.Connection({
            clientId: this.options.clientId,
            connection: this.options.options,
            ssl: this.options.ssl,
            requestTimeout: this.options.requestTimeout,
        });
        this.sendRequest = this.connection.sendRequest.bind(this.connection);
    }
    async connect() {
        if (!this.connection.isConnected()) {
            await this.connection.connect();
            await this.fetchApiVersions();
            await this.saslHandshake();
            await this.saslAuthenticate();
        }
        return this;
    }
    async disconnect() {
        await this.connection.disconnect();
    }
    async fetchApiVersions() {
        const { versions } = await this.sendRequest(api_1.API.API_VERSIONS, {});
        const versionsByApiKey = Object.fromEntries(versions.map(({ apiKey, minVersion, maxVersion }) => [apiKey, { minVersion, maxVersion }]));
        this.connection.setVersions(versionsByApiKey);
    }
    async saslHandshake() {
        if (!this.options.sasl) {
            return;
        }
        await this.sendRequest(api_1.API.SASL_HANDSHAKE, { mechanism: this.options.sasl.mechanism });
    }
    async saslAuthenticate() {
        await this.options.sasl?.authenticate({ sendRequest: this.sendRequest });
    }
}
exports.Broker = Broker;