blob: 8d4b85e54b30380df6df50d89d0e58d64e1860c6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
// Copyright (c) 2006-2009 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.
#include "chrome/browser/sync/engine/all_status.h"
#include <algorithm>
#include "base/logging.h"
#include "base/port.h"
#include "chrome/browser/sync/engine/net/server_connection_manager.h"
#include "chrome/browser/sync/protocol/service_constants.h"
#include "chrome/browser/sync/sessions/session_state.h"
#include "chrome/browser/sync/syncable/directory_manager.h"
namespace browser_sync {
static const sync_api::SyncManager::Status init_status =
{ sync_api::SyncManager::Status::OFFLINE };
AllStatus::AllStatus() : status_(init_status) {
status_.initial_sync_ended = true;
status_.notifications_enabled = false;
}
AllStatus::~AllStatus() {
}
sync_api::SyncManager::Status AllStatus::CreateBlankStatus() const {
// Status is initialized with the previous status value. Variables
// whose values accumulate (e.g. lifetime counters like updates_received)
// are not to be cleared here.
sync_api::SyncManager::Status status = status_;
status.syncing = true;
status.unsynced_count = 0;
status.conflicting_count = 0;
status.initial_sync_ended = false;
status.syncer_stuck = false;
status.max_consecutive_errors = 0;
status.server_broken = false;
status.updates_available = 0;
return status;
}
sync_api::SyncManager::Status AllStatus::CalcSyncing(
const SyncEngineEvent &event) const {
sync_api::SyncManager::Status status = CreateBlankStatus();
const sessions::SyncSessionSnapshot* snapshot = event.snapshot;
status.unsynced_count += static_cast<int>(snapshot->unsynced_count);
status.conflicting_count += snapshot->errors.num_conflicting_commits;
// The syncer may not be done yet, which could cause conflicting updates.
// But this is only used for status, so it is better to have visibility.
status.conflicting_count += snapshot->num_conflicting_updates;
status.syncing |= snapshot->syncer_status.syncing;
status.syncing = snapshot->has_more_to_sync && snapshot->is_silenced;
status.initial_sync_ended |= snapshot->is_share_usable;
status.syncer_stuck |= snapshot->syncer_status.syncer_stuck;
const sessions::ErrorCounters& errors(snapshot->errors);
if (errors.consecutive_errors > status.max_consecutive_errors)
status.max_consecutive_errors = errors.consecutive_errors;
// 100 is an arbitrary limit.
if (errors.consecutive_transient_error_commits > 100)
status.server_broken = true;
status.updates_available += snapshot->num_server_changes_remaining;
// Accumulate update count only once per session to avoid double-counting.
// TODO(ncarter): Make this realtime by having the syncer_status
// counter preserve its value across sessions. http://crbug.com/26339
if (event.what_happened == SyncEngineEvent::SYNC_CYCLE_ENDED) {
status.updates_received +=
snapshot->syncer_status.num_updates_downloaded_total;
status.tombstone_updates_received +=
snapshot->syncer_status.num_tombstone_updates_downloaded_total;
}
return status;
}
void AllStatus::CalcStatusChanges() {
const bool unsynced_changes = status_.unsynced_count > 0;
const bool online = status_.authenticated &&
status_.server_reachable && status_.server_up && !status_.server_broken;
if (online) {
if (status_.syncer_stuck)
status_.summary = sync_api::SyncManager::Status::CONFLICT;
else if (unsynced_changes || status_.syncing)
status_.summary = sync_api::SyncManager::Status::SYNCING;
else
status_.summary = sync_api::SyncManager::Status::READY;
} else if (!status_.initial_sync_ended) {
status_.summary = sync_api::SyncManager::Status::OFFLINE_UNUSABLE;
} else if (unsynced_changes) {
status_.summary = sync_api::SyncManager::Status::OFFLINE_UNSYNCED;
} else {
status_.summary = sync_api::SyncManager::Status::OFFLINE;
}
}
void AllStatus::OnSyncEngineEvent(const SyncEngineEvent& event) {
ScopedStatusLock lock(this);
switch (event.what_happened) {
case SyncEngineEvent::SYNC_CYCLE_ENDED:
case SyncEngineEvent::STATUS_CHANGED:
status_ = CalcSyncing(event);
break;
case SyncEngineEvent::SYNCER_THREAD_PAUSED:
case SyncEngineEvent::SYNCER_THREAD_RESUMED:
case SyncEngineEvent::SYNCER_THREAD_WAITING_FOR_CONNECTION:
case SyncEngineEvent::SYNCER_THREAD_CONNECTED:
case SyncEngineEvent::STOP_SYNCING_PERMANENTLY:
case SyncEngineEvent::SYNCER_THREAD_EXITING:
break;
default:
LOG(ERROR) << "Unrecognized Syncer Event: " << event.what_happened;
break;
}
}
void AllStatus::HandleServerConnectionEvent(
const ServerConnectionEvent& event) {
if (ServerConnectionEvent::STATUS_CHANGED == event.what_happened) {
ScopedStatusLock lock(this);
status_.server_up = IsGoodReplyFromServer(event.connection_code);
status_.server_reachable = event.server_reachable;
if (event.connection_code == HttpResponse::SERVER_CONNECTION_OK) {
if (!status_.authenticated) {
status_ = CreateBlankStatus();
}
status_.authenticated = true;
} else {
status_.authenticated = false;
}
}
}
sync_api::SyncManager::Status AllStatus::status() const {
AutoLock lock(mutex_);
return status_;
}
void AllStatus::SetNotificationsEnabled(bool notifications_enabled) {
ScopedStatusLock lock(this);
status_.notifications_enabled = notifications_enabled;
}
void AllStatus::IncrementNotificationsSent() {
ScopedStatusLock lock(this);
++status_.notifications_sent;
}
void AllStatus::IncrementNotificationsReceived() {
ScopedStatusLock lock(this);
++status_.notifications_received;
}
ScopedStatusLock::ScopedStatusLock(AllStatus* allstatus)
: allstatus_(allstatus) {
allstatus->mutex_.Acquire();
}
ScopedStatusLock::~ScopedStatusLock() {
allstatus_->CalcStatusChanges();
allstatus_->mutex_.Release();
}
} // namespace browser_sync
|
