components/invalidation/impl/push_client_channel.h

   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 #ifndef COMPONENTS_INVALIDATION_IMPL_PUSH_CLIENT_CHANNEL_H_
   6 #define COMPONENTS_INVALIDATION_IMPL_PUSH_CLIENT_CHANNEL_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "components/invalidation/impl/sync_system_resources.h"
  14 #include "components/invalidation/public/invalidation_export.h"
  15 #include "jingle/notifier/listener/push_client_observer.h"
  16
  17 namespace notifier {
  18 class PushClient;
  19 }  // namespace notifier
  20
  21 namespace syncer {
  22
  23 // A PushClientChannel is an implementation of NetworkChannel that
  24 // routes messages through a PushClient.
  25 class INVALIDATION_EXPORT_PRIVATE PushClientChannel
  26     : public SyncNetworkChannel,
  27       public NON_EXPORTED_BASE(notifier::PushClientObserver) {
  28  public:
  29   // |push_client| is guaranteed to be destroyed only when this object
  30   // is destroyed.
  31   explicit PushClientChannel(scoped_ptr<notifier::PushClient> push_client);
  32
  33   ~PushClientChannel() override;
  34
  35   // invalidation::NetworkChannel implementation.
  36   void SendMessage(const std::string& message) override;
  37   void RequestDetailedStatus(
  38       base::Callback<void(const base::DictionaryValue&)> callback) override;
  39
  40   // SyncNetworkChannel implementation.
  41   // If not connected, connects with the given credentials.  If
  42   // already connected, the next connection attempt will use the given
  43   // credentials.
  44   void UpdateCredentials(const std::string& email,
  45                          const std::string& token) override;
  46   int GetInvalidationClientType() override;
  47
  48   // notifier::PushClient::Observer implementation.
  49   void OnNotificationsEnabled() override;
  50   void OnNotificationsDisabled(
  51       notifier::NotificationsDisabledReason reason) override;
  52   void OnIncomingNotification(
  53       const notifier::Notification& notification) override;
  54
  55   const std::string& GetServiceContextForTest() const;
  56
  57   int64 GetSchedulingHashForTest() const;
  58
  59   static std::string EncodeMessageForTest(const std::string& message,
  60                                           const std::string& service_context,
  61                                           int64 scheduling_hash);
  62
  63   static bool DecodeMessageForTest(const std::string& notification,
  64                                    std::string* message,
  65                                    std::string* service_context,
  66                                    int64* scheduling_hash);
  67
  68  private:
  69   static void EncodeMessage(std::string* encoded_message,
  70                             const std::string& message,
  71                             const std::string& service_context,
  72                             int64 scheduling_hash);
  73   static bool DecodeMessage(const std::string& data,
  74                             std::string* message,
  75                             std::string* service_context,
  76                             int64* scheduling_hash);
  77   scoped_ptr<base::DictionaryValue> CollectDebugData() const;
  78
  79   scoped_ptr<notifier::PushClient> push_client_;
  80   std::string service_context_;
  81   int64 scheduling_hash_;
  82
  83   // This count is saved for displaying statatistics.
  84   int sent_messages_count_;
  85
  86   DISALLOW_COPY_AND_ASSIGN(PushClientChannel);
  87 };
  88
  89 }  // namespace syncer
  90
  91 #endif  // COMPONENTS_INVALIDATION_IMPL_PUSH_CLIENT_CHANNEL_H_