1// Copyright 2012 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// An implementation of SyncNotifier that wraps InvalidationNotifier
6// on its own thread.
7
8#ifndef SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_
9#define SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_
10
11#include <string>
12
13#include "base/basictypes.h"
14#include "base/compiler_specific.h"
15#include "base/memory/ref_counted.h"
16#include "base/memory/weak_ptr.h"
17#include "jingle/notifier/base/notifier_options.h"
18#include "sync/base/sync_export.h"
19#include "sync/internal_api/public/util/weak_handle.h"
20#include "sync/notifier/invalidation_handler.h"
21#include "sync/notifier/invalidation_state_tracker.h"
22#include "sync/notifier/invalidator.h"
23#include "sync/notifier/invalidator_registrar.h"
24
25namespace base {
26class SingleThreadTaskRunner;
27}  // namespace base
28
29namespace syncer {
30
31class SYNC_EXPORT_PRIVATE NonBlockingInvalidator
32    : public Invalidator,
33      // InvalidationHandler to "observe" our Core via WeakHandle.
34      public InvalidationHandler {
35 public:
36  // |invalidation_state_tracker| must be initialized.
37  NonBlockingInvalidator(
38      const notifier::NotifierOptions& notifier_options,
39      const std::string& invalidator_client_id,
40      const UnackedInvalidationsMap& saved_invalidations,
41      const std::string& invalidation_bootstrap_data,
42      const WeakHandle<InvalidationStateTracker>&
43          invalidation_state_tracker,
44      const std::string& client_info);
45
46  virtual ~NonBlockingInvalidator();
47
48  // Invalidator implementation.
49  virtual void RegisterHandler(InvalidationHandler* handler) OVERRIDE;
50  virtual void UpdateRegisteredIds(InvalidationHandler* handler,
51                                   const ObjectIdSet& ids) OVERRIDE;
52  virtual void UnregisterHandler(InvalidationHandler* handler) OVERRIDE;
53  virtual InvalidatorState GetInvalidatorState() const OVERRIDE;
54  virtual void UpdateCredentials(
55      const std::string& email, const std::string& token) OVERRIDE;
56
57  // InvalidationHandler implementation.
58  virtual void OnInvalidatorStateChange(InvalidatorState state) OVERRIDE;
59  virtual void OnIncomingInvalidation(
60      const ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
61
62 private:
63  class Core;
64
65  InvalidatorRegistrar registrar_;
66
67  // The real guts of NonBlockingInvalidator, which allows this class to live
68  // completely on the parent thread.
69  scoped_refptr<Core> core_;
70  scoped_refptr<base::SingleThreadTaskRunner> parent_task_runner_;
71  scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
72
73  base::WeakPtrFactory<NonBlockingInvalidator> weak_ptr_factory_;
74
75  DISALLOW_COPY_AND_ASSIGN(NonBlockingInvalidator);
76};
77
78}  // namespace syncer
79
80#endif  // SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_
81