New project structure

Beta of extract.js for extracting english locale

server/lib/executor.js

@@ -0,0 +1,83 @@
+'use strict';
+
+const fork = require('child_process').fork;
+const log = require('./log');
+const path = require('path');
+
+const requestCallbacks = {};
+let messageTid = 0;
+let executorProcess;
+
+module.exports = {
+    spawn,
+    start,
+    stop
+};
+
+function spawn(callback) {
+    log.verbose('Executor', 'Spawning executor process');
+
+    executorProcess = fork(path.join(__dirname, '..', 'services', 'executor.js'), [], {
+        cwd: path.join(__dirname, '..'),
+        env: {NODE_ENV: process.env.NODE_ENV}
+    });
+
+    executorProcess.on('message', msg => {
+        if (msg) {
+            if (msg.type === 'process-started') {
+                let requestCallback = requestCallbacks[msg.tid];
+                if (requestCallback && requestCallback.startedCallback) {
+                    requestCallback.startedCallback(msg.tid, );
+                }
+
+            } else if (msg.type === 'process-failed') {
+                let requestCallback = requestCallbacks[msg.tid];
+                if (requestCallback && requestCallback.failedCallback) {
+                    requestCallback.failedCallback(msg.msg);
+                }
+
+                delete requestCallbacks[msg.tid];
+
+            } else if (msg.type === 'process-finished') {
+                let requestCallback = requestCallbacks[msg.tid];
+                if (requestCallback && requestCallback.startedCallback) {
+                    requestCallback.finishedCallback(msg.code, msg.signal);
+                }
+
+                delete requestCallbacks[msg.tid];
+
+            } else if (msg.type === 'executor-started') {
+                log.info('Executor', 'Executor process started.');
+                return callback();
+            }
+        }
+    });
+
+    executorProcess.on('close', (code, signal) => {
+        log.info('Executor', 'Executor process exited with code %s signal %s', code, signal);
+    });
+}
+
+function start(type, data, startedCallback, finishedCallback, failedCallback) {
+    requestCallbacks[messageTid] = {
+        startedCallback,
+        finishedCallback,
+        failedCallback
+    };
+
+    executorProcess.send({
+        type: 'start-' + type,
+        data,
+        tid: messageTid
+    });
+
+    messageTid++;
+}
+
+function stop(tid) {
+    executorProcess.send({
+        type: 'stop-process',
+        tid
+    });
+}
+