@remote.it/core/lib/Process.js

Core remote.it JavasScript/TypeScript library

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __values = (this && this.__values) || function(o) {
    var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
    if (m) return m.call(o);
    if (o && typeof o.length === "number") return {
        next: function () {
            if (o && i >= o.length) o = void 0;
            return { value: o && o[i++], done: !o };
        }
    };
    throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var debug_1 = __importDefault(require("debug"));
var events_1 = require("events");
var child_process_1 = require("child_process");
var d = debug_1.default('remoteit:Process');
/**
 * A generic system process.
 */
var Process = /** @class */ (function (_super) {
    __extends(Process, _super);
    function Process(command) {
        var _this = _super.call(this) || this;
        _this.command = command;
        _this.handleStart = function (error, stdout, stderr) {
            d('Process started:', { error: error, stdout: stdout, stderr: stderr });
            if (error)
                return _this.handleError(error.message);
            if (stderr)
                return _this.handleError(stderr.toString());
            _this.emit('started');
        };
        _this.handleStdOut = function (buff) {
            var e_1, _a;
            var messages = _this.processBuffer(buff);
            try {
                for (var messages_1 = __values(messages), messages_1_1 = messages_1.next(); !messages_1_1.done; messages_1_1 = messages_1.next()) {
                    var message = messages_1_1.value;
                    _this.handleMessage(message);
                }
            }
            catch (e_1_1) { e_1 = { error: e_1_1 }; }
            finally {
                try {
                    if (messages_1_1 && !messages_1_1.done && (_a = messages_1.return)) _a.call(messages_1);
                }
                finally { if (e_1) throw e_1.error; }
            }
        };
        _this.handleStdErr = function (buff) {
            var e_2, _a;
            var errors = _this.processBuffer(buff);
            try {
                for (var errors_1 = __values(errors), errors_1_1 = errors_1.next(); !errors_1_1.done; errors_1_1 = errors_1.next()) {
                    var error = errors_1_1.value;
                    _this.handleError(error);
                }
            }
            catch (e_2_1) { e_2 = { error: e_2_1 }; }
            finally {
                try {
                    if (errors_1_1 && !errors_1_1.done && (_a = errors_1.return)) _a.call(errors_1);
                }
                finally { if (e_2) throw e_2.error; }
            }
        };
        _this.handleError = function (error) {
            error = error instanceof Error ? error.message : error;
            d('Handle standard error:', error);
            _this.emit('error', error);
        };
        _this.handleClose = function (code) {
            d('Process closed with code:', code);
            _this.emit('closed', Number(code));
        };
        d('Creating process:', command);
        return _this;
    }
    Process.prototype.execute = function () {
        d('Execute process:', this.command);
        var options = { maxBuffer: Infinity };
        this.process = child_process_1.execFile(this.file, this.args, options, this.handleStart);
        if (!this.process || !this.process.stdout || !this.process.stderr) {
            this.handleError('Could not start process!');
            return;
        }
        this.process.stdout.on('data', this.handleStdOut);
        this.process.stderr.on('data', this.handleStdErr);
        this.process.on('error', this.handleError);
        this.process.on('close', this.handleClose);
    };
    Process.prototype.kill = function () {
        if (!this.process)
            return;
        this.process.kill();
    };
    Object.defineProperty(Process.prototype, "pid", {
        // restart() {
        //   this.kill()
        //   this.execute()
        // }
        get: function () {
            if (!this.process || !this.process.pid)
                return;
            return this.process.pid;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Process.prototype, "file", {
        get: function () {
            return this.command.split(' ')[0];
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Process.prototype, "args", {
        get: function () {
            return this.command.split(' ').slice(1);
        },
        enumerable: true,
        configurable: true
    });
    Process.prototype.handleMessage = function (message) {
        d('Handle message:', message);
        this.emit('message', message);
    };
    Process.prototype.processBuffer = function (buff) {
        return buff
            .toString()
            .trim()
            .split(/\r?\n/);
    };
    return Process;
}(events_1.EventEmitter));
exports.Process = Process;
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