Redo: Adding a mojo interface to the mojo spy

mojo/spy/spy.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/spy/spy.h"
 
+#include <vector>
+
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/threading/thread.h"
 #include "base/threading/worker_pool.h"
 
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/service_manager/service_manager.h"
+#include "mojo/spy/public/spy.mojom.h"
+#include "mojo/spy/spy_server_impl.h"
 #include "mojo/spy/websocket_server.h"
+#include "url/gurl.h"
 
 namespace {
 
 const size_t kMessageBufSize = 2 * 1024;
 const size_t kHandleBufSize = 64;
 const int kDefaultWebSocketPort = 42424;
 
 void CloseHandles(MojoHandle* handles, size_t count) {
   for (size_t ix = 0; ix != count; ++count)
     MojoClose(handles[ix]);
 }
 
 // In charge of processing messages that flow over a
 // single message pipe.
 class MessageProcessor :
     public base::RefCountedThreadSafe<MessageProcessor> {
  public:
-
   MessageProcessor()
       : last_result_(MOJO_RESULT_OK),
         bytes_transfered_(0) {
-
     message_count_[0] = 0;
     message_count_[1] = 0;
     handle_count_[0] = 0;
     handle_count_[1] = 0;
   }
 
   void Start(mojo::ScopedMessagePipeHandle client,
              mojo::ScopedMessagePipeHandle interceptor) {
     std::vector<mojo::MessagePipeHandle> pipes;
     pipes.push_back(client.get());
@@ skipping 49 matching lines @@
                                        MOJO_WRITE_MESSAGE_FLAG_NONE))) {
         // On failure we own the handles. For now just close them.
         if (handles_read)
           CloseHandles(hbuf.get(), handles_read);
         break;
       }
     }
   }
 
  private:
-   friend class base::RefCountedThreadSafe<MessageProcessor>;
-   virtual ~MessageProcessor() {}
+  friend class base::RefCountedThreadSafe<MessageProcessor>;
+  virtual ~MessageProcessor() {}
 
-   bool CheckResult(MojoResult mr) {
-     if (mr == MOJO_RESULT_OK)
-       return true;
-     last_result_ = mr;
-     return false;
-   }
+  bool CheckResult(MojoResult mr) {
+    if (mr == MOJO_RESULT_OK)
+      return true;
+    last_result_ = mr;
+    return false;
+  }
 
-   MojoResult last_result_;
-   uint32_t bytes_transfered_;
-   uint32_t message_count_[2];
-   uint32_t handle_count_[2];
+  MojoResult last_result_;
+  uint32_t bytes_transfered_;
+  uint32_t message_count_[2];
+  uint32_t handle_count_[2];
 };
 
 // In charge of intercepting access to the service manager.
 class SpyInterceptor : public mojo::ServiceManager::Interceptor {
+ public:
+  explicit SpyInterceptor(scoped_refptr<mojo::SpyServerImpl> spy_server)
+      : spy_server_(spy_server),
+        proxy_(base::MessageLoopProxy::current()) {
+  }
+
  private:
   virtual mojo::ServiceProviderPtr OnConnectToClient(
     const GURL& url, mojo::ServiceProviderPtr real_client) OVERRIDE {
       if (!MustIntercept(url))
         return real_client.Pass();
 
       // You can get an invalid handle if the app (or service) is
       // created by unconventional means, for example the command line.
       if (!real_client.get())
         return real_client.Pass();
@@ skipping 11 matching lines @@
                      base::Passed(&real_handle), base::Passed(&interceptor)),
           true);
 
       mojo::ServiceProviderPtr faux_provider;
       faux_provider.Bind(faux_client.Pass());
       return faux_provider.Pass();
   }
 
   bool MustIntercept(const GURL& url) {
     // TODO(cpu): manage who and when to intercept.
+    proxy_->PostTask(
+        FROM_HERE,
+        base::Bind(&mojo::SpyServerImpl::OnIntercept, spy_server_, url));
     return true;
   }
+
+  scoped_refptr<mojo::SpyServerImpl> spy_server_;
+  scoped_refptr<base::MessageLoopProxy> proxy_;
 };
 
-spy::WebSocketServer* ws_server = NULL;
+mojo::WebSocketServer* ws_server = NULL;
 
-void StartServer(int port) {
+void StartWebServer(int port, mojo::ScopedMessagePipeHandle pipe) {
   // TODO(cpu) figure out lifetime of the server. See Spy() dtor.
-  ws_server = new spy::WebSocketServer(port);
+  ws_server = new mojo::WebSocketServer(port, pipe.Pass());
   ws_server->Start();
 }
 
 struct SpyOptions {
   int websocket_port;
 
   SpyOptions()
       : websocket_port(kDefaultWebSocketPort) {
   }
 };
@@ skipping 14 matching lines @@
   }
   return spy_options;
 }
 
 }  // namespace
 
 namespace mojo {
 
 Spy::Spy(mojo::ServiceManager* service_manager, const std::string& options) {
   SpyOptions spy_options = ProcessOptions(options);
+
+  spy_server_ = new SpyServerImpl();
+
   // Start the tread what will accept commands from the frontend.
   control_thread_.reset(new base::Thread("mojo_spy_control_thread"));
   base::Thread::Options thread_options(base::MessageLoop::TYPE_IO, 0);
   control_thread_->StartWithOptions(thread_options);
   control_thread_->message_loop_proxy()->PostTask(
-      FROM_HERE, base::Bind(&StartServer, spy_options.websocket_port));
+      FROM_HERE, base::Bind(&StartWebServer,
+                            spy_options.websocket_port,
+                            base::Passed(spy_server_->ServerPipe())));
 
   // Start intercepting mojo services.
-  service_manager->SetInterceptor(new SpyInterceptor());
+  service_manager->SetInterceptor(new SpyInterceptor(spy_server_));
 }
 
-Spy::~Spy(){
+Spy::~Spy() {
   // TODO(cpu): Do not leak the interceptor. Lifetime between the
   // service_manager and the spy is still unclear hence the leak.
 }
 
 }  // namespace mojo