Add the copresence component.

components/copresence/copresence_client.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 "components/copresence/copresence_client.h"
+
+#include "base/bind.h"
+#include "components/copresence/interface/copresence_delegate.h"
+#include "components/copresence/interface/whispernet_client.h"
+#include "components/copresence/rpc/rpc_handler.h"
+
+namespace copresence {
+
+PendingRequest::PendingRequest(const copresence::ReportRequest& report,
+                               const std::string app_id,
+                               const StatusCallback& callback)
+    : report(report), app_id(app_id), callback(callback) {
+}
+
+PendingRequest::~PendingRequest() {
+}
+
+// Public methods
+
+CopresenceClient::CopresenceClient(
+    CopresenceDelegate* delegate,
+    scoped_ptr<WhispernetClient> whispernet_client)
+    : init_failed_(false),
+      pending_init_operations_(0),
+      whispernet_client_(whispernet_client.Pass()) {
+  DVLOG(3) << "Initializing client.";
+  pending_init_operations_++;
+  rpc_handler_.reset(
+      new RpcHandler(delegate,
+                     base::Bind(&CopresenceClient::InitStepComplete,
+                                AsWeakPtr(),
+                                "Copresence device registration")));
+
+  pending_init_operations_++;
+  whispernet_client_->Initialize(base::Bind(&CopresenceClient::InitStepComplete,
+                                            AsWeakPtr(),
+                                            "Whispernet proxy initialization"));
+}
+
+CopresenceClient::~CopresenceClient() {
+}
+
+void CopresenceClient::Shutdown() {
+  DVLOG(3) << "Shutting down client.";
+  whispernet_client_->Shutdown();
+  rpc_handler_->DisconnectFromWhispernet();
+}
+
+WhispernetClient* CopresenceClient::whispernet_client() {
+  return whispernet_client_.get();
+}
+
+// Returns false if any operations were malformed.
+void CopresenceClient::ExecuteReportRequest(copresence::ReportRequest request,
+                                            const std::string& app_id,
+                                            const StatusCallback& callback) {
+  // Don't take on any more requests, we can't execute any, init failed.
+  if (init_failed_) {
+    callback.Run(FAIL);
+    return;
+  }
+
+  if (pending_init_operations_) {
+    pending_requests_queue_.push_back(
+        PendingRequest(request, app_id, callback));
+  } else {
+    rpc_handler_->SendReportRequest(
+        make_scoped_ptr(new copresence::ReportRequest(request)),
+        app_id,
+        callback);
+  }
+}
+
+// Private methods
+
+void CopresenceClient::CompleteInitialization() {
+  if (pending_init_operations_)
+    return;
+
+  if (!init_failed_)
+    rpc_handler_->ConnectToWhispernet(whispernet_client_.get());
+
+  for (std::vector<PendingRequest>::iterator request =
+           pending_requests_queue_.begin();
+       request != pending_requests_queue_.end();
+       ++request) {
+    if (init_failed_) {
+      request->callback.Run(FAIL);
+    } else {
+      rpc_handler_->SendReportRequest(
+          make_scoped_ptr(new copresence::ReportRequest(request->report)),
+          request->app_id,
+          request->callback);
+    }
+  }
+  pending_requests_queue_.clear();
+}
+
+void CopresenceClient::InitStepComplete(const std::string& step, bool success) {
+  if (!success) {
+    LOG(ERROR) << step << " failed!";
+    init_failed_ = true;
+  }
+
+  DVLOG(3) << "Init step: " << step << " complete.";
+  pending_init_operations_--;
+  CompleteInitialization();
+}
+
+}  // namespace copresence