sync API with documentation

lib/cluster.js

@@ -59,7 +59,7 @@ cluster.isWorker = 'NODE_WORKER_ID' in process.env;
 cluster.isMaster = ! cluster.isWorker;
 
 //The worker object is only used in a worker
-cluster.worker = cluster.isWorker ? {} : null;
+cluster.worker = cluster.isWorker ? new EventEmitter() : null;
 //The workers array is oly used in the naster
 cluster.workers = cluster.isMaster ? [] : null;
 
@@ -134,7 +134,7 @@ function handleWorkerMessage(message, worker) {
 
       //echo callback id, if one was requested
       if (message._queryId) {
-        worker.send({ _queryId: message._queryId });
+        worker.send({ _internal: true, _queryId: message._queryId });
       }
   }
 
@@ -155,7 +155,7 @@ function handleWorkerMessage(message, worker) {
       }
 
       //echo callback id, with the fd handler associated with it
-      var response = { _queryId: message._queryId };
+      var response = { _internal: true, _queryId: message._queryId };
       worker.send(response, servers[key]);
   }
 
@@ -172,14 +172,14 @@ function handleWorkerMessage(message, worker) {
 
     //echo callback id, if one was requested
     if (message._queryId) {
-      worker.send({ _queryId: message._queryId });
+      worker.send({ _internal: true, _queryId: message._queryId });
     }
   }
 
   //echo callback id, if one was requested
   else {
     if (message._queryId) {
-      worker.send({ _queryId: message._queryId });
+      worker.send({ _internal: true, _queryId: message._queryId });
     }
   }
 }
@@ -304,7 +304,7 @@ cluster._setupWorker = function() {
   });
 
   //Tell master that the worker is online
-  cluster.worker.send({
+  cluster.worker.respond({
     cmd: 'online',
     _internal : true
   });
@@ -313,19 +313,23 @@ cluster._setupWorker = function() {
   process.on('message', function(msg, handle) {
     debug("recv " + JSON.stringify(msg));
 
-    if (msg._queryId && msg._queryId in queryCallbacks) {
-      var cb = queryCallbacks[msg._queryId];
-      if (typeof cb == 'function') {
-        cb(msg, handle);
+    if (msg._internal && msg._internal === true) {
+      if (msg._queryId && msg._queryId in queryCallbacks) {
+        var cb = queryCallbacks[msg._queryId];
+        if (typeof cb == 'function') {
+          cb(msg, handle);
+        }
+        delete queryCallbacks[msg._queryId];
       }
-      delete queryCallbacks[msg._queryId];
+    } else {
+      cluster.worker.emit("message", msg);
     }
   });
 };
 
-//Send message to the master, and run callback when the master echo
+// Send message to the master, and run callback when the master echo
 if (cluster.isWorker) {
-  cluster.worker.send = function (msg, cb) {
+  cluster.worker.respond = function (msg, cb) {
     // This can only be called from a worker.
     assert(cluster.isWorker);
 
@@ -343,15 +347,14 @@ if (cluster.isWorker) {
   };
 }
 
-
 // Internal function. Called by lib/net.js when attempting to bind a server.
 cluster._getServer = function(tcpSelf, address, port, addressType, cb) {
   // This can only be called from a worker.
   assert(cluster.isWorker);
 
   //Send a listening message to the master
   tcpSelf.once('listening', function () {
-    cluster.worker.send({
+    cluster.worker.respond({
       cmd: "listening",
       _internal : true,
       address: address,
@@ -369,7 +372,7 @@ cluster._getServer = function(tcpSelf, address, port, addressType, cb) {
     addressType: addressType
   };
   //The callback will be stored until the master has responed
-  cluster.worker.send(message, function(msg, handle) {
+  cluster.worker.respond(message, function(msg, handle) {
     cb(handle);
   });