schematic-kafka/dist/testcontainers/helper.js

Encode and decode kafka messages with Confluent Schema Registry (pure typescript implementation)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.findTypes = exports.up = exports.findPort = void 0;
const tslib_1 = require("tslib");
const net_1 = require("net");
const testcontainers_1 = require("testcontainers");
const protobufjs_1 = require("protobufjs");
const TAG = "7.3.0";
const findPort = () => new Promise((resolve) => {
    const server = (0, net_1.createServer)();
    server.listen(0, () => {
        const { port } = server.address();
        server.close(() => {
            resolve(port);
        });
    });
});
exports.findPort = findPort;
const up = () => tslib_1.__awaiter(void 0, void 0, void 0, function* () {
    const kafkaPort = yield (0, exports.findPort)();
    const testcontainers = yield new testcontainers_1.DockerComposeEnvironment(".", "docker-compose.yml")
        .withEnvironment({ TAG: TAG, KAFKA_PORT: `${kafkaPort}` })
        .withWaitStrategy("zookeeper", testcontainers_1.Wait.forLogMessage("binding to port"))
        .withWaitStrategy("broker", testcontainers_1.Wait.forLogMessage("Ready to serve as the new controller"))
        .withStartupTimeout(1000 * 60 * 3)
        .up();
    const schemaRegistryPort = testcontainers.getContainer("schema-registry").getMappedPort(8081);
    return {
        testcontainers,
        schemaRegistryPort,
        brokerPort: kafkaPort,
    };
});
exports.up = up;
// function to traverse protobuf definition to find all the types (there should only be one)
const findTypes = (src) => {
    const types = [];
    const dive = (src) => {
        if (src instanceof protobufjs_1.Type) {
            types.push(src.name);
        }
        else if (src.nested) {
            dive(src.nested);
        }
        else if (typeof src === "object") {
            Object.values(src).map(dive);
        }
    };
    dive(src);
    return types;
};
exports.findTypes = findTypes;
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