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// Copyright (c) 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.
//
// An implementation of SyncNotifier 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
// NonBlockingInvalidationNotifier.
#ifndef SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
#define SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/threading/non_thread_safe.h"
#include "sync/internal_api/public/syncable/model_type.h"
#include "sync/notifier/chrome_invalidation_client.h"
#include "sync/notifier/invalidation_state_tracker.h"
#include "sync/notifier/sync_notifier.h"
#include "sync/util/weak_handle.h"
namespace notifier {
class PushClient;
} // namespace notifier
namespace sync_notifier {
// This class must live on the IO thread.
class InvalidationNotifier
: public SyncNotifier,
public ChromeInvalidationClient::Listener {
public:
// |invalidation_state_tracker| must be initialized.
InvalidationNotifier(
scoped_ptr<notifier::PushClient> push_client,
const InvalidationVersionMap& initial_max_invalidation_versions,
const std::string& initial_invalidation_state,
const browser_sync::WeakHandle<InvalidationStateTracker>&
invalidation_state_tracker,
const std::string& client_info);
virtual ~InvalidationNotifier();
// SyncNotifier implementation.
virtual void AddObserver(SyncNotifierObserver* observer) OVERRIDE;
virtual void RemoveObserver(SyncNotifierObserver* observer) OVERRIDE;
virtual void SetUniqueId(const std::string& unique_id) OVERRIDE;
virtual void SetStateDeprecated(const std::string& state) OVERRIDE;
virtual void UpdateCredentials(
const std::string& email, const std::string& token) OVERRIDE;
virtual void UpdateEnabledTypes(
syncable::ModelTypeSet enabled_types) OVERRIDE;
virtual void SendNotification(
syncable::ModelTypeSet changed_types) OVERRIDE;
// ChromeInvalidationClient::Listener implementation.
virtual void OnInvalidate(
const syncable::ModelTypePayloadMap& type_payloads) OVERRIDE;
virtual void OnSessionStatusChanged(bool has_session) OVERRIDE;
private:
base::NonThreadSafe non_thread_safe_;
// 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_;
// Passed to |invalidation_client_|.
const InvalidationVersionMap initial_max_invalidation_versions_;
// Passed to |invalidation_client_|.
const browser_sync::WeakHandle<InvalidationStateTracker>
invalidation_state_tracker_;
// Passed to |invalidation_client_|.
const std::string client_info_;
// Our observers (which must live on the same thread).
ObserverList<SyncNotifierObserver> observers_;
// The client ID to pass to |chrome_invalidation_client_|.
std::string invalidation_client_id_;
// The state to pass to |chrome_invalidation_client_|.
// TODO(tim): This should be made const once migration is completed for bug
// 124140.
std::string invalidation_state_;
// The invalidation client.
ChromeInvalidationClient invalidation_client_;
DISALLOW_COPY_AND_ASSIGN(InvalidationNotifier);
};
} // namespace sync_notifier
#endif // SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
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