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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 Invalidator that wraps an invalidation
// client. Handles the details of connecting to XMPP and hooking it
// up to the invalidation client.
//
// You probably don't want to use this directly; use
// NonBlockingInvalidator.
#ifndef COMPONENTS_INVALIDATION_IMPL_INVALIDATION_NOTIFIER_H_
#define COMPONENTS_INVALIDATION_IMPL_INVALIDATION_NOTIFIER_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequenced_task_runner.h"
#include "base/threading/non_thread_safe.h"
#include "components/invalidation/impl/invalidation_state_tracker.h"
#include "components/invalidation/impl/invalidator.h"
#include "components/invalidation/impl/invalidator_registrar.h"
#include "components/invalidation/impl/sync_invalidation_listener.h"
#include "components/invalidation/public/invalidation_export.h"
namespace notifier {
class PushClient;
} // namespace notifier
namespace syncer {
// This class must live on the IO thread.
class INVALIDATION_EXPORT InvalidationNotifier
: public Invalidator,
public SyncInvalidationListener::Delegate,
public base::NonThreadSafe {
public:
// |invalidation_state_tracker| must be initialized.
InvalidationNotifier(
scoped_ptr<SyncNetworkChannel> network_channel,
const std::string& invalidator_client_id,
const UnackedInvalidationsMap& saved_invalidations,
const std::string& invalidation_bootstrap_data,
const base::WeakPtr<InvalidationStateTracker>& invalidation_state_tracker,
scoped_refptr<base::SingleThreadTaskRunner>
invalidation_state_tracker_task_runner,
const std::string& client_info);
~InvalidationNotifier() override;
// Invalidator implementation.
void RegisterHandler(InvalidationHandler* handler) override;
bool 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;
// SyncInvalidationListener::Delegate implementation.
void OnInvalidate(const ObjectIdInvalidationMap& invalidation_map) override;
void OnInvalidatorStateChange(InvalidatorState state) override;
private:
// We start off in the STOPPED state. When we get our initial
// credentials, we connect and move to the CONNECTING state. When
// we're connected we start the invalidation client and move to the
// STARTED state. We never go back to a previous state.
enum State {
STOPPED,
CONNECTING,
STARTED
};
State state_;
InvalidatorRegistrar registrar_;
// Passed to |invalidation_listener_|.
const UnackedInvalidationsMap saved_invalidations_;
// Passed to |invalidation_listener_|.
const base::WeakPtr<InvalidationStateTracker> invalidation_state_tracker_;
scoped_refptr<base::SequencedTaskRunner>
invalidation_state_tracker_task_runner_;
// Passed to |invalidation_listener_|.
const std::string client_info_;
// The client ID to pass to |invalidation_listener_|.
const std::string invalidator_client_id_;
// The initial bootstrap data to pass to |invalidation_listener_|.
const std::string invalidation_bootstrap_data_;
// The invalidation listener.
SyncInvalidationListener invalidation_listener_;
DISALLOW_COPY_AND_ASSIGN(InvalidationNotifier);
};
} // namespace syncer
#endif // COMPONENTS_INVALIDATION_IMPL_INVALIDATION_NOTIFIER_H_
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