chrome/browser/services/gcm/gcm_client_factory.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/services/gcm/gcm_client_factory.h"
   6
   7 #include "base/files/file_path.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/threading/sequenced_worker_pool.h"
  10 #include "content/public/browser/browser_thread.h"
  11 #include "google_apis/gcm/gcm_client_impl.h"
  12
  13 namespace gcm {
  14
  15 namespace {
  16
  17 static base::LazyInstance<GCMClientImpl>::Leaky g_gcm_client =
  18     LAZY_INSTANCE_INITIALIZER;
  19 static bool g_gcm_client_initialized = false;
  20 static GCMClientFactory::TestingFactoryFunction g_gcm_client_factory = NULL;
  21 static GCMClient* g_gcm_client_override = NULL;
  22
  23 }  // namespace
  24
  25
  26 // static
  27 GCMClient* GCMClientFactory::GetClient() {
  28   if (g_gcm_client_override)
  29     return g_gcm_client_override;
  30   if (g_gcm_client_factory) {
  31     g_gcm_client_override = g_gcm_client_factory();
  32     return g_gcm_client_override;
  33   }
  34
  35   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
  36
  37   GCMClientImpl* client = g_gcm_client.Pointer();
  38   if (!g_gcm_client_initialized) {
  39     // TODO(jianli): get gcm store path.
  40     base::FilePath gcm_store_path;
  41     scoped_refptr<base::SequencedWorkerPool> worker_pool(
  42         content::BrowserThread::GetBlockingPool());
  43     scoped_refptr<base::SequencedTaskRunner> blocking_task_runner(
  44         worker_pool->GetSequencedTaskRunnerWithShutdownBehavior(
  45             worker_pool->GetSequenceToken(),
  46             base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
  47     client->Initialize(gcm_store_path, blocking_task_runner);
  48     g_gcm_client_initialized = true;
  49   }
  50   return client;
  51 }
  52
  53 // static
  54 void GCMClientFactory::SetTestingFactory(TestingFactoryFunction factory) {
  55   if (g_gcm_client_override) {
  56     delete g_gcm_client_override;
  57     g_gcm_client_override = NULL;
  58   }
  59   g_gcm_client_factory = factory;
  60 }
  61
  62 GCMClientFactory::GCMClientFactory() {
  63 }
  64
  65 GCMClientFactory::~GCMClientFactory() {
  66 }
  67
  68 }  // namespace gcm