smartspawn/dist/smartipc.classes.thread.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const plugins = require("./smartipc.plugins");
const q = require("smartq");
exports.workerBasePath = null;
exports.setWorkerBasePath = (basePathArg) => {
    exports.workerBasePath = basePathArg;
    plugins.threads.config.set({
        basepath: {
            node: exports.workerBasePath
        }
    });
};
class Thread {
    constructor(filePathArg) {
        this.running = false;
        this.assignedPool = null;
        this.workerPath = filePathArg;
    }
    /**
     * sends a message to the spawned process
     * spawns it and keeps running
     */
    send(message) {
        let done = q.defer();
        this.checkSpawn();
        this.thread.send(message);
        this.thread.on('message', (message) => {
            done.resolve(message);
        });
        this.thread.on('done', (job, message) => {
            done.resolve(message);
        });
        this.thread.on('error', err => {
            done.reject(err);
        });
        return done.promise;
    }
    /**
     * sends a command once and then kills the child process
     */
    sendOnce(message) {
        let done = q.defer();
        this.send(message).then(message => {
            done.resolve(message);
            this.kill();
        });
        return done.promise;
    }
    /**
     * kills the thread
     */
    kill() {
        this.thread.kill();
        this.running = false;
    }
    assignToPool(poolArg) {
        this.assignedPool = poolArg;
    }
    checkSpawn() {
        if (!this.running && !this.assignedPool) {
            this.running = true;
            this.thread = plugins.threads.spawn(this.workerPath);
        }
        else if (!this.running && this.assignedPool) {
            this.running = true;
            this.thread = this.assignedPool.run(this.workerPath);
        }
    }
}
exports.Thread = Thread;
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