redis-smq-common/dist/esm/src/worker/worker-thread/runnable-worker-thread.js

Provides essential components and utilities shared across RedisSMQ packages.

import { EWorkerThreadChildExecutionCode, EWorkerThreadChildExitCode, EWorkerThreadParentMessage, } from '../types/index.js';
import { exit } from './worker-thread-message.js';
function isWorkerClass(Worker) {
    return Worker.prototype && typeof Worker.prototype.constructor === 'function';
}
export function handleRunnableWorker(Worker, messagePort, initialPayload) {
    let instance = null;
    try {
        if (isWorkerClass(Worker))
            instance = new Worker(initialPayload);
        else
            instance = Worker(initialPayload);
    }
    catch (err) {
        exit(EWorkerThreadChildExitCode.INVALID_WORKER_TYPE, err);
    }
    if (!instance ||
        typeof instance !== 'object' ||
        !instance.run ||
        !instance.shutdown) {
        exit(EWorkerThreadChildExitCode.INVALID_WORKER_TYPE);
    }
    else {
        const run = () => {
            try {
                instance.run((err) => {
                    if (err)
                        exit(EWorkerThreadChildExecutionCode.PROCESSING_ERROR, err);
                });
            }
            catch (err) {
                exit(EWorkerThreadChildExecutionCode.PROCESSING_CAUGHT_ERROR, err);
            }
        };
        const shutdown = () => {
            instance.shutdown(() => void 0);
        };
        const onMessage = (message) => {
            if (message.type === EWorkerThreadParentMessage.RUN)
                run();
            if (message.type === EWorkerThreadParentMessage.SHUTDOWN)
                shutdown();
        };
        messagePort.on('message', onMessage);
    }
}
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