From 96850b7429503ec831f0d170da61ff13e22b7f34 Mon Sep 17 00:00:00 2001
From: Andy Street <andrews@fb.com>
Date: Wed, 29 Apr 2015 11:54:26 -0700
Subject: [PATCH] [react_native] JS files from D2027955:     [react_native] Add
 bridge 'spy mode' to watch bridge traffic

---
 Libraries/Utilities/MessageQueue.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Libraries/Utilities/MessageQueue.js b/Libraries/Utilities/MessageQueue.js
index 576aaa991..97658c235 100644
--- a/Libraries/Utilities/MessageQueue.js
+++ b/Libraries/Utilities/MessageQueue.js
@@ -21,6 +21,9 @@ var JSTimersExecution = require('JSTimersExecution');
 
 var INTERNAL_ERROR = 'Error in MessageQueue implementation';
 
+// Prints all bridge traffic to console.log
+var DEBUG_SPY_MODE = false;
+
 type ModulesConfig = {
   [key:string]: {
     moduleID: number;
@@ -263,6 +266,9 @@ var MessageQueueMixin = {
         'both the success callback and the error callback.',
          cbID
       );
+      if (DEBUG_SPY_MODE) {
+        console.log('N->JS: Callback#' + cbID + '(' + JSON.stringify(args) + ')');
+      }
       cb.apply(scope, args);
     } catch(ie_requires_catch) {
       throw ie_requires_catch;
@@ -292,6 +298,11 @@ var MessageQueueMixin = {
     var moduleName = this._localModuleIDToModuleName[moduleID];
 
     var methodName = this._localModuleNameToMethodIDToName[moduleName][methodID];
+    if (DEBUG_SPY_MODE) {
+      console.log(
+        'N->JS: ' + moduleName + '.' + methodName +
+        '(' + JSON.stringify(params) + ')');
+    }
     var ret = jsCall(this._requireFunc(moduleName), methodName, params);
 
     return ret;
@@ -460,6 +471,17 @@ var MessageQueueMixin = {
     var ret = currentOutgoingItems[REQUEST_MODULE_IDS].length ||
       currentOutgoingItems[RESPONSE_RETURN_VALUES].length ? currentOutgoingItems : null;
 
+    if (DEBUG_SPY_MODE && ret) {
+      for (var i = 0; i < currentOutgoingItems[0].length; i++) {
+        var moduleName = this._remoteModuleIDToModuleName[currentOutgoingItems[0][i]];
+        var methodName =
+          this._remoteModuleNameToMethodIDToName[moduleName][currentOutgoingItems[1][i]];
+        console.log(
+          'JS->N: ' + moduleName + '.' + methodName +
+          '(' + JSON.stringify(currentOutgoingItems[2][i]) + ')');
+      }
+    }
+
     return ret;
   },