Revert of Move some sync/notifier to components/invalidation

sync/notifier/sync_invalidation_listener.h

+// Copyright 2012 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.
+//
+// A simple wrapper around invalidation::InvalidationClient that
+// handles all the startup/shutdown details and hookups.
+
+#ifndef SYNC_NOTIFIER_SYNC_INVALIDATION_LISTENER_H_
+#define SYNC_NOTIFIER_SYNC_INVALIDATION_LISTENER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/non_thread_safe.h"
+#include "google/cacheinvalidation/include/invalidation-listener.h"
+#include "sync/base/sync_export.h"
+#include "sync/internal_api/public/util/weak_handle.h"
+#include "sync/notifier/ack_handler.h"
+#include "sync/notifier/invalidation_state_tracker.h"
+#include "sync/notifier/invalidator_state.h"
+#include "sync/notifier/state_writer.h"
+#include "sync/notifier/sync_system_resources.h"
+#include "sync/notifier/unacked_invalidation_set.h"
+
+namespace buzz {
+class XmppTaskParentInterface;
+}  // namespace buzz
+
+namespace notifier {
+class PushClient;
+}  // namespace notifier
+
+namespace syncer {
+
+class ObjectIdInvalidationMap;
+class RegistrationManager;
+
+// SyncInvalidationListener is not thread-safe and lives on the sync
+// thread.
+class SYNC_EXPORT_PRIVATE SyncInvalidationListener
+    : public NON_EXPORTED_BASE(invalidation::InvalidationListener),
+      public StateWriter,
+      public SyncNetworkChannel::Observer,
+      public AckHandler,
+      public base::NonThreadSafe {
+ public:
+  typedef base::Callback<invalidation::InvalidationClient*(
+      invalidation::SystemResources*,
+      int,
+      const invalidation::string&,
+      const invalidation::string&,
+      invalidation::InvalidationListener*)> CreateInvalidationClientCallback;
+
+  class SYNC_EXPORT_PRIVATE Delegate {
+   public:
+    virtual ~Delegate();
+
+    virtual void OnInvalidate(
+        const ObjectIdInvalidationMap& invalidations) = 0;
+
+    virtual void OnInvalidatorStateChange(InvalidatorState state) = 0;
+  };
+
+  explicit SyncInvalidationListener(
+      scoped_ptr<SyncNetworkChannel> network_channel);
+
+  // Calls Stop().
+  virtual ~SyncInvalidationListener();
+
+  // Does not take ownership of |delegate| or |state_writer|.
+  // |invalidation_state_tracker| must be initialized.
+  void Start(
+      const CreateInvalidationClientCallback&
+          create_invalidation_client_callback,
+      const std::string& client_id, const std::string& client_info,
+      const std::string& invalidation_bootstrap_data,
+      const UnackedInvalidationsMap& initial_object_states,
+      const WeakHandle<InvalidationStateTracker>& invalidation_state_tracker,
+      Delegate* delegate);
+
+  void UpdateCredentials(const std::string& email, const std::string& token);
+
+  // Update the set of object IDs that we're interested in getting
+  // notifications for.  May be called at any time.
+  void UpdateRegisteredIds(const ObjectIdSet& ids);
+
+  // invalidation::InvalidationListener implementation.
+  virtual void Ready(
+      invalidation::InvalidationClient* client) OVERRIDE;
+  virtual void Invalidate(
+      invalidation::InvalidationClient* client,
+      const invalidation::Invalidation& invalidation,
+      const invalidation::AckHandle& ack_handle) OVERRIDE;
+  virtual void InvalidateUnknownVersion(
+      invalidation::InvalidationClient* client,
+      const invalidation::ObjectId& object_id,
+      const invalidation::AckHandle& ack_handle) OVERRIDE;
+  virtual void InvalidateAll(
+      invalidation::InvalidationClient* client,
+      const invalidation::AckHandle& ack_handle) OVERRIDE;
+  virtual void InformRegistrationStatus(
+      invalidation::InvalidationClient* client,
+      const invalidation::ObjectId& object_id,
+      invalidation::InvalidationListener::RegistrationState reg_state) OVERRIDE;
+  virtual void InformRegistrationFailure(
+      invalidation::InvalidationClient* client,
+      const invalidation::ObjectId& object_id,
+      bool is_transient,
+      const std::string& error_message) OVERRIDE;
+  virtual void ReissueRegistrations(
+      invalidation::InvalidationClient* client,
+      const std::string& prefix,
+      int prefix_length) OVERRIDE;
+  virtual void InformError(
+      invalidation::InvalidationClient* client,
+      const invalidation::ErrorInfo& error_info) OVERRIDE;
+
+  // AckHandler implementation.
+  virtual void Acknowledge(
+      const invalidation::ObjectId& id,
+      const syncer::AckHandle& handle) OVERRIDE;
+  virtual void Drop(
+      const invalidation::ObjectId& id,
+      const syncer::AckHandle& handle) OVERRIDE;
+
+  // StateWriter implementation.
+  virtual void WriteState(const std::string& state) OVERRIDE;
+
+  // SyncNetworkChannel::Observer implementation.
+  virtual void OnNetworkChannelStateChanged(
+      InvalidatorState invalidator_state) OVERRIDE;
+
+  void DoRegistrationUpdate();
+
+  void RequestDetailedStatus(
+      base::Callback<void(const base::DictionaryValue&)> callback) const;
+
+  void StopForTest();
+
+ private:
+  void Stop();
+
+  InvalidatorState GetState() const;
+
+  void EmitStateChange();
+
+  // Sends invalidations to their appropriate destination.
+  //
+  // If there are no observers registered for them, they will be saved for
+  // later.
+  //
+  // If there are observers registered, they will be saved (to make sure we
+  // don't drop them until they've been acted on) and emitted to the observers.
+  void DispatchInvalidations(const ObjectIdInvalidationMap& invalidations);
+
+  // Saves invalidations.
+  //
+  // This call isn't synchronous so we can't guarantee these invalidations will
+  // be safely on disk by the end of the call, but it should ensure that the
+  // data makes it to disk eventually.
+  void SaveInvalidations(const ObjectIdInvalidationMap& to_save);
+
+  // Emits previously saved invalidations to their registered observers.
+  void EmitSavedInvalidations(const ObjectIdInvalidationMap& to_emit);
+
+  // Generate a Dictionary with all the debugging information.
+  scoped_ptr<base::DictionaryValue> CollectDebugData() const;
+
+  WeakHandle<AckHandler> GetThisAsAckHandler();
+
+  scoped_ptr<SyncNetworkChannel> sync_network_channel_;
+  SyncSystemResources sync_system_resources_;
+  UnackedInvalidationsMap unacked_invalidations_map_;
+  WeakHandle<InvalidationStateTracker> invalidation_state_tracker_;
+  Delegate* delegate_;
+  scoped_ptr<invalidation::InvalidationClient> invalidation_client_;
+  scoped_ptr<RegistrationManager> registration_manager_;
+  // Stored to pass to |registration_manager_| on start.
+  ObjectIdSet registered_ids_;
+
+  // The states of the ticl and the push client.
+  InvalidatorState ticl_state_;
+  InvalidatorState push_client_state_;
+
+  base::WeakPtrFactory<SyncInvalidationListener> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(SyncInvalidationListener);
+};
+
+}  // namespace syncer
+
+#endif  // SYNC_NOTIFIER_SYNC_INVALIDATION_LISTENER_H_