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// 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.
//
// An implementation of SyncNotifier that wraps InvalidationNotifier
// on its own thread.
#ifndef COMPONENTS_INVALIDATION_NON_BLOCKING_INVALIDATOR_H_
#define COMPONENTS_INVALIDATION_NON_BLOCKING_INVALIDATOR_H_
#include <string>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "components/invalidation/invalidation_export.h"
#include "components/invalidation/invalidation_state_tracker.h"
#include "components/invalidation/invalidator.h"
#include "components/invalidation/invalidator_registrar.h"
#include "components/invalidation/invalidator_state.h"
#include "components/invalidation/unacked_invalidation_set.h"
#include "jingle/notifier/base/notifier_options.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace syncer {
class SyncNetworkChannel;
class GCMNetworkChannelDelegate;
// Callback type for function that creates SyncNetworkChannel. This function
// gets passed into NonBlockingInvalidator constructor.
typedef base::Callback<scoped_ptr<SyncNetworkChannel>(void)>
NetworkChannelCreator;
class INVALIDATION_EXPORT_PRIVATE NonBlockingInvalidator
: public Invalidator,
public InvalidationStateTracker {
public:
// |invalidation_state_tracker| must be initialized and must outlive |this|.
NonBlockingInvalidator(
NetworkChannelCreator network_channel_creator,
const std::string& invalidator_client_id,
const UnackedInvalidationsMap& saved_invalidations,
const std::string& invalidation_bootstrap_data,
InvalidationStateTracker* invalidation_state_tracker,
const std::string& client_info,
const scoped_refptr<net::URLRequestContextGetter>&
request_context_getter);
~NonBlockingInvalidator() override;
// Invalidator implementation.
void RegisterHandler(InvalidationHandler* handler) override;
void UpdateRegisteredIds(InvalidationHandler* handler,
const ObjectIdSet& ids) override;
void UnregisterHandler(InvalidationHandler* handler) override;
InvalidatorState GetInvalidatorState() const override;
void UpdateCredentials(const std::string& email,
const std::string& token) override;
void RequestDetailedStatus(base::Callback<void(const base::DictionaryValue&)>
callback) const override;
// Static functions to construct callback that creates network channel for
// SyncSystemResources. The goal is to pass network channel to invalidator at
// the same time not exposing channel specific parameters to invalidator and
// channel implementation to client of invalidator.
static NetworkChannelCreator MakePushClientChannelCreator(
const notifier::NotifierOptions& notifier_options);
static NetworkChannelCreator MakeGCMNetworkChannelCreator(
scoped_refptr<net::URLRequestContextGetter> request_context_getter,
scoped_ptr<GCMNetworkChannelDelegate> delegate);
// These methods are forwarded to the invalidation_state_tracker_.
void ClearAndSetNewClientId(const std::string& data) override;
std::string GetInvalidatorClientId() const override;
void SetBootstrapData(const std::string& data) override;
std::string GetBootstrapData() const override;
void SetSavedInvalidations(const UnackedInvalidationsMap& states) override;
UnackedInvalidationsMap GetSavedInvalidations() const override;
void Clear() override;
private:
void OnInvalidatorStateChange(InvalidatorState state);
void OnIncomingInvalidation(const ObjectIdInvalidationMap& invalidation_map);
std::string GetOwnerName() const;
friend class NonBlockingInvalidatorTestDelegate;
struct InitializeOptions;
class Core;
InvalidatorRegistrar registrar_;
InvalidationStateTracker* invalidation_state_tracker_;
// The real guts of NonBlockingInvalidator, which allows this class to live
// completely on the parent thread.
scoped_refptr<Core> core_;
scoped_refptr<base::SingleThreadTaskRunner> parent_task_runner_;
scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
base::WeakPtrFactory<NonBlockingInvalidator> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(NonBlockingInvalidator);
};
} // namespace syncer
#endif // COMPONENTS_INVALIDATION_NON_BLOCKING_INVALIDATOR_H_
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