chrome/browser/extensions/activity_log/ad_network_database.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/extensions/activity_log/ad_network_database.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "chrome/browser/extensions/activity_log/hashed_ad_network_database.h"
   9
  10 namespace extensions {
  11
  12 namespace {
  13
  14 class AdNetworkDatabaseFactory {
  15  public:
  16   AdNetworkDatabaseFactory();
  17   ~AdNetworkDatabaseFactory();
  18
  19   const AdNetworkDatabase* GetDatabase();
  20   void SetDatabase(scoped_ptr<AdNetworkDatabase> database);
  21
  22  private:
  23   scoped_ptr<AdNetworkDatabase> database_;
  24 };
  25
  26 AdNetworkDatabaseFactory::AdNetworkDatabaseFactory() {}
  27 AdNetworkDatabaseFactory::~AdNetworkDatabaseFactory() {}
  28
  29 const AdNetworkDatabase* AdNetworkDatabaseFactory::GetDatabase() {
  30   // Construct a new database, if we don't have one.
  31   if (!database_.get())
  32     database_.reset(new HashedAdNetworkDatabase());
  33
  34   return database_.get();
  35 }
  36
  37 void AdNetworkDatabaseFactory::SetDatabase(
  38     scoped_ptr<AdNetworkDatabase> database) {
  39   database_.reset(database.release());
  40 }
  41
  42 base::LazyInstance<AdNetworkDatabaseFactory> g_factory =
  43     LAZY_INSTANCE_INITIALIZER;
  44
  45 }  // namespace
  46
  47 AdNetworkDatabase::~AdNetworkDatabase() {}
  48
  49 // static
  50 const AdNetworkDatabase* AdNetworkDatabase::Get() {
  51   return g_factory.Get().GetDatabase();
  52 }
  53
  54 // static
  55 void AdNetworkDatabase::SetForTesting(scoped_ptr<AdNetworkDatabase> database) {
  56   g_factory.Get().SetDatabase(database.Pass());
  57 }
  58
  59 }  // namespace extensions