Prototype for copresenceSockets.

extensions/browser/api/copresence_socket/copresence_socket_api.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 "extensions/browser/api/copresence_socket/copresence_socket_api.h"
+
+#include "base/lazy_instance.h"
+#include "components/copresence_sockets/public/copresence_peer.h"
+#include "components/copresence_sockets/public/copresence_socket.h"
+#include "content/public/browser/browser_context.h"
+#include "extensions/browser/event_router.h"
+#include "extensions/common/api/copresence_socket.h"
+
+using copresence_sockets::CopresencePeer;
+using copresence_sockets::CopresenceSocket;
+
+namespace extensions {
+
+class CopresencePeerResource : public ApiResource {
+ public:
+  // Takes ownership of peer.

[Ken Rockot(use gerrit already), 2014/09/30 17:26:04]

Can you document this by using a scoped_ptr instead? Here and other places.

[rkc, 2014/10/01 19:08:24]

Done.

+  CopresencePeerResource(const std::string& owner_extension_id,
+                         copresence_sockets::CopresencePeer* peer)
+      : ApiResource(owner_extension_id), peer_(peer) {}
+
+  virtual ~CopresencePeerResource() { delete peer_; }
+
+  copresence_sockets::CopresencePeer* peer() { return peer_; }
+
+  static const content::BrowserThread::ID kThreadId =
+      content::BrowserThread::UI;
+
+ private:
+  copresence_sockets::CopresencePeer* peer_;
+
+  DISALLOW_COPY_AND_ASSIGN(CopresencePeerResource);
+};
+
+class CopresenceSocketResource : public ApiResource {
+ public:
+  // Takes ownership of socket.
+  CopresenceSocketResource(const std::string& owner_extension_id,
+                           copresence_sockets::CopresenceSocket* socket)
+      : ApiResource(owner_extension_id), socket_(socket) {}
+
+  virtual ~CopresenceSocketResource() { delete socket_; }
+
+  copresence_sockets::CopresenceSocket* socket() { return socket_; }
+
+  static const content::BrowserThread::ID kThreadId =
+      content::BrowserThread::UI;
+
+ private:
+  copresence_sockets::CopresenceSocket* socket_;
+
+  DISALLOW_COPY_AND_ASSIGN(CopresenceSocketResource);
+};
+
+CopresenceSocketFunction::CopresenceSocketFunction()
+    : peers_manager_(nullptr), sockets_manager_(nullptr) {
+}
+
+CopresenceSocketFunction::~CopresenceSocketFunction() {
+  delete peers_manager_;
+  delete sockets_manager_;
+}
+
+void CopresenceSocketFunction::Initialize() {
+  peers_manager_ =
+      new ApiResourceManager<CopresencePeerResource>(browser_context());
+  sockets_manager_ =
+      new ApiResourceManager<CopresenceSocketResource>(browser_context());
+}
+
+int CopresenceSocketFunction::AddPeer(CopresencePeerResource* peer) {
+  return peers_manager_->Add(peer);
+}
+
+int CopresenceSocketFunction::AddSocket(CopresenceSocketResource* socket) {
+  return sockets_manager_->Add(socket);
+}
+
+void CopresenceSocketFunction::ReplacePeer(const std::string& extension_id,
+                                           int peer_id,
+                                           CopresencePeerResource* peer) {
+  peers_manager_->Replace(extension_id, peer_id, peer);
+}
+
+CopresencePeerResource* CopresenceSocketFunction::GetPeer(int peer_id) {
+  return peers_manager_->Get(extension_id(), peer_id);
+}
+
+CopresenceSocketResource* CopresenceSocketFunction::GetSocket(int socket_id) {
+  return sockets_manager_->Get(extension_id(), socket_id);
+}
+
+void CopresenceSocketFunction::RemovePeer(int peer_id) {
+  peers_manager_->Remove(extension_id(), peer_id);
+}
+
+void CopresenceSocketFunction::RemoveSocket(int socket_id) {
+  sockets_manager_->Remove(extension_id(), socket_id);
+}
+
+void CopresenceSocketFunction::DispatchOnReceiveEvent(int socket_id,
+                                                      const std::string& data) {
+  core_api::copresence_socket::ReceiveInfo info;
+  info.socket_id = socket_id;
+  info.data = data;
+  // Send the data to the client app.
+  scoped_ptr<Event> event(
+      new Event(core_api::copresence_socket::OnReceive::kEventName,
+                core_api::copresence_socket::OnReceive::Create(info),
+                browser_context()));
+  EventRouter::Get(browser_context())
+      ->DispatchEventToExtension(extension_id(), event.Pass());
+  VLOG(2) << "Dispatched OnReceive event: socketId = " << socket_id
+          << " and data = " << data;
+}
+
+void CopresenceSocketFunction::DispatchOnConnectedEvent(
+    int peer_id,
+    CopresenceSocket* socket) {
+  int socket_id =
+      AddSocket(new CopresenceSocketResource(extension_id(), socket));
+
+  // Send the messages to the client app.
+  scoped_ptr<Event> event(new Event(
+      core_api::copresence_socket::OnConnected::kEventName,
+      core_api::copresence_socket::OnConnected::Create(peer_id, socket_id),
+      browser_context()));
+  EventRouter::Get(browser_context())
+      ->DispatchEventToExtension(extension_id(), event.Pass());
+  VLOG(2) << "Dispatched OnConnected event: peerId = " << peer_id
+          << " and socketId = " << socket_id;
+
+  socket->Receive(base::Bind(base::Bind(
+      &CopresenceSocketFunction::DispatchOnReceiveEvent, this, peer_id)));
+}
+
+ExtensionFunction::ResponseAction CopresenceSocketFunction::Run() {
+  Initialize();
+  return Execute();
+}
+
+// CopresenceSocketCreatePeerFunction implementation:
+ExtensionFunction::ResponseAction
+CopresenceSocketCreatePeerFunction::Execute() {
+  // Add an empty peer to create a placeholder peer_id. We will need to bind
+  // this id to the OnConnected event dispatcher, so we need it before we
+  // create the actual peer. Once we have the peer created, we'll replace the
+  // placeholder with the actual peer object.
+  int peer_id = AddPeer(new CopresencePeerResource(extension_id(), nullptr));
+
+  CopresencePeer* peer = new CopresencePeer(
+      base::Bind(&CopresenceSocketCreatePeerFunction::OnCreated, this, peer_id),
+      base::Bind(
+          &CopresenceSocketFunction::DispatchOnConnectedEvent, this, peer_id));
+
+  ReplacePeer(extension_id(),
+              peer_id,
+              new CopresencePeerResource(extension_id(), peer));
+
+  return RespondLater();
+}
+
+void CopresenceSocketCreatePeerFunction::OnCreated(int peer_id,
+                                                   const std::string& locator) {
+  core_api::copresence_socket::PeerInfo peer_info;
+  peer_info.peer_id = peer_id;
+  peer_info.locator = locator;
+  Respond(ArgumentList(
+      core_api::copresence_socket::CreatePeer::Results::Create(peer_info)));
+}
+
+// CopresenceSocketDestroyPeerFunction implementation:
+ExtensionFunction::ResponseAction
+CopresenceSocketDestroyPeerFunction::Execute() {
+  scoped_ptr<core_api::copresence_socket::DestroyPeer::Params> params(
+      core_api::copresence_socket::DestroyPeer::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  RemovePeer(params->peer_id);
+  return RespondNow(NoArguments());
+}
+
+// CopresenceSocketSendFunction implementation:
+ExtensionFunction::ResponseAction CopresenceSocketSendFunction::Execute() {
+  scoped_ptr<core_api::copresence_socket::Send::Params> params(
+      core_api::copresence_socket::Send::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  CopresenceSocketResource* socket = GetSocket(params->socket_id);
+  if (!socket) {
+    VLOG(1) << "Socket not found. ID = " << params->socket_id;
+    return RespondNow(
+        ArgumentList(core_api::copresence_socket::Send::Results::Create(
+            core_api::copresence_socket::SOCKET_STATUS_INVALID_SOCKET)));
+  }
+
+  socket->socket()->Send(params->data);
+  return RespondNow(
+      ArgumentList(core_api::copresence_socket::Send::Results::Create(
+          core_api::copresence_socket::SOCKET_STATUS_NO_ERROR)));
+}
+
+// CopresenceSocketDisconnectFunction implementation:
+ExtensionFunction::ResponseAction
+CopresenceSocketDisconnectFunction::Execute() {
+  scoped_ptr<core_api::copresence_socket::Disconnect::Params> params(
+      core_api::copresence_socket::Disconnect::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  return RespondLater();
+}
+
+}  // namespace extensions