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sync_manager_impl.cc
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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.
#include "sync/internal_api/sync_manager_impl.h"
#include <string>
#include "base/base64.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/json/json_writer.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/histogram.h"
#include "base/observer_list.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "sync/engine/sync_scheduler.h"
#include "sync/engine/syncer_types.h"
#include "sync/internal_api/change_reorder_buffer.h"
#include "sync/internal_api/public/base/cancelation_signal.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/internal_api/public/base_node.h"
#include "sync/internal_api/public/configure_reason.h"
#include "sync/internal_api/public/engine/polling_constants.h"
#include "sync/internal_api/public/http_post_provider_factory.h"
#include "sync/internal_api/public/internal_components_factory.h"
#include "sync/internal_api/public/read_node.h"
#include "sync/internal_api/public/read_transaction.h"
#include "sync/internal_api/public/user_share.h"
#include "sync/internal_api/public/util/experiments.h"
#include "sync/internal_api/public/write_node.h"
#include "sync/internal_api/public/write_transaction.h"
#include "sync/internal_api/sync_core.h"
#include "sync/internal_api/syncapi_internal.h"
#include "sync/internal_api/syncapi_server_connection_manager.h"
#include "sync/js/js_arg_list.h"
#include "sync/js/js_reply_handler.h"
#include "sync/notifier/invalidation_util.h"
#include "sync/notifier/invalidator.h"
#include "sync/notifier/object_id_invalidation_map.h"
#include "sync/protocol/proto_value_conversions.h"
#include "sync/protocol/sync.pb.h"
#include "sync/syncable/directory.h"
#include "sync/syncable/entry.h"
#include "sync/syncable/in_memory_directory_backing_store.h"
#include "sync/syncable/on_disk_directory_backing_store.h"
using base::TimeDelta;
using sync_pb::GetUpdatesCallerInfo;
namespace syncer {
using sessions::SyncSessionContext;
using syncable::ImmutableWriteTransactionInfo;
using syncable::SPECIFICS;
using syncable::UNIQUE_POSITION;
namespace {
// Delays for syncer nudges.
static const int kDefaultNudgeDelayMilliseconds = 200;
static const int kPreferencesNudgeDelayMilliseconds = 2000;
static const int kSyncRefreshDelayMsec = 500;
static const int kSyncSchedulerDelayMsec = 250;
// Maximum count and size for traffic recorder.
static const unsigned int kMaxMessagesToRecord = 100;
static const unsigned int kMaxMessageSizeToRecord = 50 * 1024;
GetUpdatesCallerInfo::GetUpdatesSource GetSourceFromReason(
ConfigureReason reason) {
switch (reason) {
case CONFIGURE_REASON_RECONFIGURATION:
return GetUpdatesCallerInfo::RECONFIGURATION;
case CONFIGURE_REASON_MIGRATION:
return GetUpdatesCallerInfo::MIGRATION;
case CONFIGURE_REASON_NEW_CLIENT:
return GetUpdatesCallerInfo::NEW_CLIENT;
case CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE:
case CONFIGURE_REASON_CRYPTO:
return GetUpdatesCallerInfo::NEWLY_SUPPORTED_DATATYPE;
default:
NOTREACHED();
}
return GetUpdatesCallerInfo::UNKNOWN;
}
} // namespace
// A class to calculate nudge delays for types.
class NudgeStrategy {
public:
static TimeDelta GetNudgeDelayTimeDelta(const ModelType& model_type,
SyncManagerImpl* core) {
NudgeDelayStrategy delay_type = GetNudgeDelayStrategy(model_type);
return GetNudgeDelayTimeDeltaFromType(delay_type,
model_type,
core);
}
private:
// Possible types of nudge delay for datatypes.
// Note: These are just hints. If a sync happens then all dirty entries
// would be committed as part of the sync.
enum NudgeDelayStrategy {
// Sync right away.
IMMEDIATE,
// Sync this change while syncing another change.
ACCOMPANY_ONLY,
// The datatype does not use one of the predefined wait times but defines
// its own wait time logic for nudge.
CUSTOM,
};
static NudgeDelayStrategy GetNudgeDelayStrategy(const ModelType& type) {
switch (type) {
case AUTOFILL:
return ACCOMPANY_ONLY;
case PREFERENCES:
case SESSIONS:
case FAVICON_IMAGES:
case FAVICON_TRACKING:
return CUSTOM;
default:
return IMMEDIATE;
}
}
static TimeDelta GetNudgeDelayTimeDeltaFromType(
const NudgeDelayStrategy& delay_type, const ModelType& model_type,
const SyncManagerImpl* core) {
CHECK(core);
TimeDelta delay = TimeDelta::FromMilliseconds(
kDefaultNudgeDelayMilliseconds);
switch (delay_type) {
case IMMEDIATE:
delay = TimeDelta::FromMilliseconds(
kDefaultNudgeDelayMilliseconds);
break;
case ACCOMPANY_ONLY:
delay = TimeDelta::FromSeconds(kDefaultShortPollIntervalSeconds);
break;
case CUSTOM:
switch (model_type) {
case PREFERENCES:
delay = TimeDelta::FromMilliseconds(
kPreferencesNudgeDelayMilliseconds);
break;
case SESSIONS:
case FAVICON_IMAGES:
case FAVICON_TRACKING:
delay = core->scheduler()->GetSessionsCommitDelay();
break;
default:
NOTREACHED();
}
break;
default:
NOTREACHED();
}
return delay;
}
};
SyncManagerImpl::SyncManagerImpl(const std::string& name)
: name_(name),
change_delegate_(NULL),
initialized_(false),
observing_network_connectivity_changes_(false),
invalidator_state_(DEFAULT_INVALIDATION_ERROR),
traffic_recorder_(kMaxMessagesToRecord, kMaxMessageSizeToRecord),
encryptor_(NULL),
report_unrecoverable_error_function_(NULL),
weak_ptr_factory_(this) {
// Pre-fill |notification_info_map_|.
for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
notification_info_map_.insert(
std::make_pair(ModelTypeFromInt(i), NotificationInfo()));
}
// Bind message handlers.
BindJsMessageHandler(
"getAllNodes",
&SyncManagerImpl::GetAllNodes);
BindJsMessageHandler(
"getClientServerTraffic",
&SyncManagerImpl::GetClientServerTraffic);
}
SyncManagerImpl::~SyncManagerImpl() {
DCHECK(thread_checker_.CalledOnValidThread());
CHECK(!initialized_);
}
SyncManagerImpl::NotificationInfo::NotificationInfo() : total_count(0) {}
SyncManagerImpl::NotificationInfo::~NotificationInfo() {}
base::DictionaryValue* SyncManagerImpl::NotificationInfo::ToValue() const {
base::DictionaryValue* value = new base::DictionaryValue();
value->SetInteger("totalCount", total_count);
value->SetString("payload", payload);
return value;
}
bool SyncManagerImpl::VisiblePositionsDiffer(
const syncable::EntryKernelMutation& mutation) const {
const syncable::EntryKernel& a = mutation.original;
const syncable::EntryKernel& b = mutation.mutated;
if (!b.ShouldMaintainPosition())
return false;
if (!a.ref(UNIQUE_POSITION).Equals(b.ref(UNIQUE_POSITION)))
return true;
if (a.ref(syncable::PARENT_ID) != b.ref(syncable::PARENT_ID))
return true;
return false;
}
bool SyncManagerImpl::VisiblePropertiesDiffer(
const syncable::EntryKernelMutation& mutation,
Cryptographer* cryptographer) const {
const syncable::EntryKernel& a = mutation.original;
const syncable::EntryKernel& b = mutation.mutated;
const sync_pb::EntitySpecifics& a_specifics = a.ref(SPECIFICS);
const sync_pb::EntitySpecifics& b_specifics = b.ref(SPECIFICS);
DCHECK_EQ(GetModelTypeFromSpecifics(a_specifics),
GetModelTypeFromSpecifics(b_specifics));
ModelType model_type = GetModelTypeFromSpecifics(b_specifics);
// Suppress updates to items that aren't tracked by any browser model.
if (model_type < FIRST_REAL_MODEL_TYPE ||
!a.ref(syncable::UNIQUE_SERVER_TAG).empty()) {
return false;
}
if (a.ref(syncable::IS_DIR) != b.ref(syncable::IS_DIR))
return true;
if (!AreSpecificsEqual(cryptographer,
a.ref(syncable::SPECIFICS),
b.ref(syncable::SPECIFICS))) {
return true;
}
// We only care if the name has changed if neither specifics is encrypted
// (encrypted nodes blow away the NON_UNIQUE_NAME).
if (!a_specifics.has_encrypted() && !b_specifics.has_encrypted() &&
a.ref(syncable::NON_UNIQUE_NAME) != b.ref(syncable::NON_UNIQUE_NAME))
return true;
if (VisiblePositionsDiffer(mutation))
return true;
return false;
}
void SyncManagerImpl::ThrowUnrecoverableError() {
DCHECK(thread_checker_.CalledOnValidThread());
ReadTransaction trans(FROM_HERE, GetUserShare());
trans.GetWrappedTrans()->OnUnrecoverableError(
FROM_HERE, "Simulating unrecoverable error for testing purposes.");
}
ModelTypeSet SyncManagerImpl::InitialSyncEndedTypes() {
return directory()->InitialSyncEndedTypes();
}
ModelTypeSet SyncManagerImpl::GetTypesWithEmptyProgressMarkerToken(
ModelTypeSet types) {
ModelTypeSet result;
for (ModelTypeSet::Iterator i = types.First(); i.Good(); i.Inc()) {
sync_pb::DataTypeProgressMarker marker;
directory()->GetDownloadProgress(i.Get(), &marker);
if (marker.token().empty())
result.Put(i.Get());
}
return result;
}
void SyncManagerImpl::ConfigureSyncer(
ConfigureReason reason,
ModelTypeSet to_download,
ModelTypeSet to_purge,
ModelTypeSet to_journal,
ModelTypeSet to_unapply,
const ModelSafeRoutingInfo& new_routing_info,
const base::Closure& ready_task,
const base::Closure& retry_task) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!ready_task.is_null());
DCHECK(!retry_task.is_null());
DVLOG(1) << "Configuring -"
<< "\n\t" << "current types: "
<< ModelTypeSetToString(GetRoutingInfoTypes(new_routing_info))
<< "\n\t" << "types to download: "
<< ModelTypeSetToString(to_download)
<< "\n\t" << "types to purge: "
<< ModelTypeSetToString(to_purge)
<< "\n\t" << "types to journal: "
<< ModelTypeSetToString(to_journal)
<< "\n\t" << "types to unapply: "
<< ModelTypeSetToString(to_unapply);
if (!PurgeDisabledTypes(to_purge,
to_journal,
to_unapply)) {
// We failed to cleanup the types. Invoke the ready task without actually
// configuring any types. The caller should detect this as a configuration
// failure and act appropriately.
ready_task.Run();
return;
}
ConfigurationParams params(GetSourceFromReason(reason),
to_download,
new_routing_info,
ready_task,
retry_task);
scheduler_->Start(SyncScheduler::CONFIGURATION_MODE);
scheduler_->ScheduleConfiguration(params);
}
void SyncManagerImpl::Init(
const base::FilePath& database_location,
const WeakHandle<JsEventHandler>& event_handler,
const std::string& sync_server_and_path,
int port,
bool use_ssl,
scoped_ptr<HttpPostProviderFactory> post_factory,
const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
ExtensionsActivity* extensions_activity,
SyncManager::ChangeDelegate* change_delegate,
const SyncCredentials& credentials,
const std::string& invalidator_client_id,
const std::string& restored_key_for_bootstrapping,
const std::string& restored_keystore_key_for_bootstrapping,
InternalComponentsFactory* internal_components_factory,
Encryptor* encryptor,
scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
ReportUnrecoverableErrorFunction report_unrecoverable_error_function,
CancelationSignal* cancelation_signal) {
CHECK(!initialized_);
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(post_factory.get());
DCHECK(!credentials.email.empty());
DCHECK(!credentials.sync_token.empty());
DCHECK(cancelation_signal);
DVLOG(1) << "SyncManager starting Init...";
weak_handle_this_ = MakeWeakHandle(weak_ptr_factory_.GetWeakPtr());
change_delegate_ = change_delegate;
AddObserver(&js_sync_manager_observer_);
SetJsEventHandler(event_handler);
AddObserver(&debug_info_event_listener_);
database_path_ = database_location.Append(
syncable::Directory::kSyncDatabaseFilename);
encryptor_ = encryptor;
unrecoverable_error_handler_ = unrecoverable_error_handler.Pass();
report_unrecoverable_error_function_ = report_unrecoverable_error_function;
allstatus_.SetHasKeystoreKey(
!restored_keystore_key_for_bootstrapping.empty());
sync_encryption_handler_.reset(new SyncEncryptionHandlerImpl(
&share_,
encryptor,
restored_key_for_bootstrapping,
restored_keystore_key_for_bootstrapping));
sync_encryption_handler_->AddObserver(this);
sync_encryption_handler_->AddObserver(&debug_info_event_listener_);
sync_encryption_handler_->AddObserver(&js_sync_encryption_handler_observer_);
base::FilePath absolute_db_path = database_path_;
DCHECK(absolute_db_path.IsAbsolute());
scoped_ptr<syncable::DirectoryBackingStore> backing_store =
internal_components_factory->BuildDirectoryBackingStore(
credentials.email, absolute_db_path).Pass();
DCHECK(backing_store.get());
const std::string& username = credentials.email;
share_.directory.reset(
new syncable::Directory(
backing_store.release(),
unrecoverable_error_handler_.get(),
report_unrecoverable_error_function_,
sync_encryption_handler_.get(),
sync_encryption_handler_->GetCryptographerUnsafe()));
DVLOG(1) << "Username: " << username;
if (!OpenDirectory(username)) {
NotifyInitializationFailure();
LOG(ERROR) << "Sync manager initialization failed!";
return;
}
connection_manager_.reset(new SyncAPIServerConnectionManager(
sync_server_and_path, port, use_ssl,
post_factory.release(), cancelation_signal));
connection_manager_->set_client_id(directory()->cache_guid());
connection_manager_->AddListener(this);
std::string sync_id = directory()->cache_guid();
DVLOG(1) << "Setting sync client ID: " << sync_id;
allstatus_.SetSyncId(sync_id);
DVLOG(1) << "Setting invalidator client ID: " << invalidator_client_id;
allstatus_.SetInvalidatorClientId(invalidator_client_id);
model_type_registry_.reset(new ModelTypeRegistry(workers, directory()));
sync_core_.reset(new SyncCore(model_type_registry_.get()));
// Build a SyncSessionContext and store the worker in it.
DVLOG(1) << "Sync is bringing up SyncSessionContext.";
std::vector<SyncEngineEventListener*> listeners;
listeners.push_back(&allstatus_);
listeners.push_back(this);
session_context_ = internal_components_factory->BuildContext(
connection_manager_.get(),
directory(),
extensions_activity,
listeners,
&debug_info_event_listener_,
&traffic_recorder_,
model_type_registry_.get(),
invalidator_client_id).Pass();
session_context_->set_account_name(credentials.email);
scheduler_ = internal_components_factory->BuildScheduler(
name_, session_context_.get(), cancelation_signal).Pass();
scheduler_->Start(SyncScheduler::CONFIGURATION_MODE);
initialized_ = true;
net::NetworkChangeNotifier::AddIPAddressObserver(this);
net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
observing_network_connectivity_changes_ = true;
UpdateCredentials(credentials);
NotifyInitializationSuccess();
}
void SyncManagerImpl::NotifyInitializationSuccess() {
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnInitializationComplete(
MakeWeakHandle(weak_ptr_factory_.GetWeakPtr()),
MakeWeakHandle(debug_info_event_listener_.GetWeakPtr()),
true, InitialSyncEndedTypes()));
}
void SyncManagerImpl::NotifyInitializationFailure() {
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnInitializationComplete(
MakeWeakHandle(weak_ptr_factory_.GetWeakPtr()),
MakeWeakHandle(debug_info_event_listener_.GetWeakPtr()),
false, ModelTypeSet()));
}
void SyncManagerImpl::OnPassphraseRequired(
PassphraseRequiredReason reason,
const sync_pb::EncryptedData& pending_keys) {
// Does nothing.
}
void SyncManagerImpl::OnPassphraseAccepted() {
// Does nothing.
}
void SyncManagerImpl::OnBootstrapTokenUpdated(
const std::string& bootstrap_token,
BootstrapTokenType type) {
if (type == KEYSTORE_BOOTSTRAP_TOKEN)
allstatus_.SetHasKeystoreKey(true);
}
void SyncManagerImpl::OnEncryptedTypesChanged(ModelTypeSet encrypted_types,
bool encrypt_everything) {
allstatus_.SetEncryptedTypes(encrypted_types);
}
void SyncManagerImpl::OnEncryptionComplete() {
// Does nothing.
}
void SyncManagerImpl::OnCryptographerStateChanged(
Cryptographer* cryptographer) {
allstatus_.SetCryptographerReady(cryptographer->is_ready());
allstatus_.SetCryptoHasPendingKeys(cryptographer->has_pending_keys());
allstatus_.SetKeystoreMigrationTime(
sync_encryption_handler_->migration_time());
}
void SyncManagerImpl::OnPassphraseTypeChanged(
PassphraseType type,
base::Time explicit_passphrase_time) {
allstatus_.SetPassphraseType(type);
allstatus_.SetKeystoreMigrationTime(
sync_encryption_handler_->migration_time());
}
void SyncManagerImpl::StartSyncingNormally(
const ModelSafeRoutingInfo& routing_info) {
// Start the sync scheduler.
// TODO(sync): We always want the newest set of routes when we switch back
// to normal mode. Figure out how to enforce set_routing_info is always
// appropriately set and that it's only modified when switching to normal
// mode.
DCHECK(thread_checker_.CalledOnValidThread());
session_context_->SetRoutingInfo(routing_info);
scheduler_->Start(SyncScheduler::NORMAL_MODE);
}
syncable::Directory* SyncManagerImpl::directory() {
return share_.directory.get();
}
const SyncScheduler* SyncManagerImpl::scheduler() const {
return scheduler_.get();
}
bool SyncManagerImpl::GetHasInvalidAuthTokenForTest() const {
return connection_manager_->HasInvalidAuthToken();
}
bool SyncManagerImpl::OpenDirectory(const std::string& username) {
DCHECK(!initialized_) << "Should only happen once";
// Set before Open().
change_observer_ = MakeWeakHandle(js_mutation_event_observer_.AsWeakPtr());
WeakHandle<syncable::TransactionObserver> transaction_observer(
MakeWeakHandle(js_mutation_event_observer_.AsWeakPtr()));
syncable::DirOpenResult open_result = syncable::NOT_INITIALIZED;
open_result = directory()->Open(username, this, transaction_observer);
if (open_result != syncable::OPENED) {
LOG(ERROR) << "Could not open share for:" << username;
return false;
}
// Unapplied datatypes (those that do not have initial sync ended set) get
// re-downloaded during any configuration. But, it's possible for a datatype
// to have a progress marker but not have initial sync ended yet, making
// it a candidate for migration. This is a problem, as the DataTypeManager
// does not support a migration while it's already in the middle of a
// configuration. As a result, any partially synced datatype can stall the
// DTM, waiting for the configuration to complete, which it never will due
// to the migration error. In addition, a partially synced nigori will
// trigger the migration logic before the backend is initialized, resulting
// in crashes. We therefore detect and purge any partially synced types as
// part of initialization.
if (!PurgePartiallySyncedTypes())
return false;
return true;
}
bool SyncManagerImpl::PurgePartiallySyncedTypes() {
ModelTypeSet partially_synced_types = ModelTypeSet::All();
partially_synced_types.RemoveAll(InitialSyncEndedTypes());
partially_synced_types.RemoveAll(GetTypesWithEmptyProgressMarkerToken(
ModelTypeSet::All()));
DVLOG(1) << "Purging partially synced types "
<< ModelTypeSetToString(partially_synced_types);
UMA_HISTOGRAM_COUNTS("Sync.PartiallySyncedTypes",
partially_synced_types.Size());
if (partially_synced_types.Empty())
return true;
return directory()->PurgeEntriesWithTypeIn(partially_synced_types,
ModelTypeSet(),
ModelTypeSet());
}
bool SyncManagerImpl::PurgeDisabledTypes(
ModelTypeSet to_purge,
ModelTypeSet to_journal,
ModelTypeSet to_unapply) {
if (to_purge.Empty())
return true;
DVLOG(1) << "Purging disabled types " << ModelTypeSetToString(to_purge);
DCHECK(to_purge.HasAll(to_journal));
DCHECK(to_purge.HasAll(to_unapply));
return directory()->PurgeEntriesWithTypeIn(to_purge, to_journal, to_unapply);
}
void SyncManagerImpl::UpdateCredentials(const SyncCredentials& credentials) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(initialized_);
DCHECK(!credentials.email.empty());
DCHECK(!credentials.sync_token.empty());
observing_network_connectivity_changes_ = true;
if (!connection_manager_->SetAuthToken(credentials.sync_token))
return; // Auth token is known to be invalid, so exit early.
scheduler_->OnCredentialsUpdated();
// TODO(zea): pass the credential age to the debug info event listener.
}
void SyncManagerImpl::AddObserver(SyncManager::Observer* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
observers_.AddObserver(observer);
}
void SyncManagerImpl::RemoveObserver(SyncManager::Observer* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
observers_.RemoveObserver(observer);
}
void SyncManagerImpl::ShutdownOnSyncThread() {
DCHECK(thread_checker_.CalledOnValidThread());
// Prevent any in-flight method calls from running. Also
// invalidates |weak_handle_this_| and |change_observer_|.
weak_ptr_factory_.InvalidateWeakPtrs();
js_mutation_event_observer_.InvalidateWeakPtrs();
scheduler_.reset();
session_context_.reset();
model_type_registry_.reset();
if (sync_encryption_handler_) {
sync_encryption_handler_->RemoveObserver(&debug_info_event_listener_);
sync_encryption_handler_->RemoveObserver(this);
}
SetJsEventHandler(WeakHandle<JsEventHandler>());
RemoveObserver(&js_sync_manager_observer_);
RemoveObserver(&debug_info_event_listener_);
// |connection_manager_| may end up being NULL here in tests (in synchronous
// initialization mode).
//
// TODO(akalin): Fix this behavior.
if (connection_manager_)
connection_manager_->RemoveListener(this);
connection_manager_.reset();
net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
observing_network_connectivity_changes_ = false;
if (initialized_ && directory()) {
directory()->SaveChanges();
}
share_.directory.reset();
change_delegate_ = NULL;
initialized_ = false;
// We reset these here, since only now we know they will not be
// accessed from other threads (since we shut down everything).
change_observer_.Reset();
weak_handle_this_.Reset();
}
void SyncManagerImpl::OnIPAddressChanged() {
if (!observing_network_connectivity_changes_) {
DVLOG(1) << "IP address change dropped.";
return;
}
DVLOG(1) << "IP address change detected.";
OnNetworkConnectivityChangedImpl();
}
void SyncManagerImpl::OnConnectionTypeChanged(
net::NetworkChangeNotifier::ConnectionType) {
if (!observing_network_connectivity_changes_) {
DVLOG(1) << "Connection type change dropped.";
return;
}
DVLOG(1) << "Connection type change detected.";
OnNetworkConnectivityChangedImpl();
}
void SyncManagerImpl::OnNetworkConnectivityChangedImpl() {
DCHECK(thread_checker_.CalledOnValidThread());
scheduler_->OnConnectionStatusChange();
}
void SyncManagerImpl::OnServerConnectionEvent(
const ServerConnectionEvent& event) {
DCHECK(thread_checker_.CalledOnValidThread());
if (event.connection_code ==
HttpResponse::SERVER_CONNECTION_OK) {
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnConnectionStatusChange(CONNECTION_OK));
}
if (event.connection_code == HttpResponse::SYNC_AUTH_ERROR) {
observing_network_connectivity_changes_ = false;
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnConnectionStatusChange(CONNECTION_AUTH_ERROR));
}
if (event.connection_code == HttpResponse::SYNC_SERVER_ERROR) {
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnConnectionStatusChange(CONNECTION_SERVER_ERROR));
}
}
void SyncManagerImpl::HandleTransactionCompleteChangeEvent(
ModelTypeSet models_with_changes) {
// This notification happens immediately after the transaction mutex is
// released. This allows work to be performed without blocking other threads
// from acquiring a transaction.
if (!change_delegate_)
return;
// Call commit.
for (ModelTypeSet::Iterator it = models_with_changes.First();
it.Good(); it.Inc()) {
change_delegate_->OnChangesComplete(it.Get());
change_observer_.Call(
FROM_HERE,
&SyncManager::ChangeObserver::OnChangesComplete,
it.Get());
}
}
ModelTypeSet
SyncManagerImpl::HandleTransactionEndingChangeEvent(
const ImmutableWriteTransactionInfo& write_transaction_info,
syncable::BaseTransaction* trans) {
// This notification happens immediately before a syncable WriteTransaction
// falls out of scope. It happens while the channel mutex is still held,
// and while the transaction mutex is held, so it cannot be re-entrant.
if (!change_delegate_ || change_records_.empty())
return ModelTypeSet();
// This will continue the WriteTransaction using a read only wrapper.
// This is the last chance for read to occur in the WriteTransaction
// that's closing. This special ReadTransaction will not close the
// underlying transaction.
ReadTransaction read_trans(GetUserShare(), trans);
ModelTypeSet models_with_changes;
for (ChangeRecordMap::const_iterator it = change_records_.begin();
it != change_records_.end(); ++it) {
DCHECK(!it->second.Get().empty());
ModelType type = ModelTypeFromInt(it->first);
change_delegate_->
OnChangesApplied(type, trans->directory()->GetTransactionVersion(type),
&read_trans, it->second);
change_observer_.Call(FROM_HERE,
&SyncManager::ChangeObserver::OnChangesApplied,
type, write_transaction_info.Get().id, it->second);
models_with_changes.Put(type);
}
change_records_.clear();
return models_with_changes;
}
void SyncManagerImpl::HandleCalculateChangesChangeEventFromSyncApi(
const ImmutableWriteTransactionInfo& write_transaction_info,
syncable::BaseTransaction* trans,
std::vector<int64>* entries_changed) {
// We have been notified about a user action changing a sync model.
LOG_IF(WARNING, !change_records_.empty()) <<
"CALCULATE_CHANGES called with unapplied old changes.";
// The mutated model type, or UNSPECIFIED if nothing was mutated.
ModelTypeSet mutated_model_types;
const syncable::ImmutableEntryKernelMutationMap& mutations =
write_transaction_info.Get().mutations;
for (syncable::EntryKernelMutationMap::const_iterator it =
mutations.Get().begin(); it != mutations.Get().end(); ++it) {
if (!it->second.mutated.ref(syncable::IS_UNSYNCED)) {
continue;
}
ModelType model_type =
GetModelTypeFromSpecifics(it->second.mutated.ref(SPECIFICS));
if (model_type < FIRST_REAL_MODEL_TYPE) {
NOTREACHED() << "Permanent or underspecified item changed via syncapi.";
continue;
}
// Found real mutation.
if (model_type != UNSPECIFIED) {
mutated_model_types.Put(model_type);
entries_changed->push_back(it->second.mutated.ref(syncable::META_HANDLE));
}
}
// Nudge if necessary.
if (!mutated_model_types.Empty()) {
if (weak_handle_this_.IsInitialized()) {
weak_handle_this_.Call(FROM_HERE,
&SyncManagerImpl::RequestNudgeForDataTypes,
FROM_HERE,
mutated_model_types);
} else {
NOTREACHED();
}
}
}
void SyncManagerImpl::SetExtraChangeRecordData(int64 id,
ModelType type, ChangeReorderBuffer* buffer,
Cryptographer* cryptographer, const syncable::EntryKernel& original,
bool existed_before, bool exists_now) {
// If this is a deletion and the datatype was encrypted, we need to decrypt it
// and attach it to the buffer.
if (!exists_now && existed_before) {
sync_pb::EntitySpecifics original_specifics(original.ref(SPECIFICS));
if (type == PASSWORDS) {
// Passwords must use their own legacy ExtraPasswordChangeRecordData.
scoped_ptr<sync_pb::PasswordSpecificsData> data(
DecryptPasswordSpecifics(original_specifics, cryptographer));
if (!data) {
NOTREACHED();
return;
}
buffer->SetExtraDataForId(id, new ExtraPasswordChangeRecordData(*data));
} else if (original_specifics.has_encrypted()) {
// All other datatypes can just create a new unencrypted specifics and
// attach it.
const sync_pb::EncryptedData& encrypted = original_specifics.encrypted();
if (!cryptographer->Decrypt(encrypted, &original_specifics)) {
NOTREACHED();
return;
}
}
buffer->SetSpecificsForId(id, original_specifics);
}
}
void SyncManagerImpl::HandleCalculateChangesChangeEventFromSyncer(
const ImmutableWriteTransactionInfo& write_transaction_info,
syncable::BaseTransaction* trans,
std::vector<int64>* entries_changed) {
// We only expect one notification per sync step, so change_buffers_ should
// contain no pending entries.
LOG_IF(WARNING, !change_records_.empty()) <<
"CALCULATE_CHANGES called with unapplied old changes.";
ChangeReorderBuffer change_buffers[MODEL_TYPE_COUNT];
Cryptographer* crypto = directory()->GetCryptographer(trans);
const syncable::ImmutableEntryKernelMutationMap& mutations =
write_transaction_info.Get().mutations;
for (syncable::EntryKernelMutationMap::const_iterator it =
mutations.Get().begin(); it != mutations.Get().end(); ++it) {
bool existed_before = !it->second.original.ref(syncable::IS_DEL);
bool exists_now = !it->second.mutated.ref(syncable::IS_DEL);
// Omit items that aren't associated with a model.
ModelType type =
GetModelTypeFromSpecifics(it->second.mutated.ref(SPECIFICS));
if (type < FIRST_REAL_MODEL_TYPE)
continue;
int64 handle = it->first;
if (exists_now && !existed_before)
change_buffers[type].PushAddedItem(handle);
else if (!exists_now && existed_before)
change_buffers[type].PushDeletedItem(handle);
else if (exists_now && existed_before &&
VisiblePropertiesDiffer(it->second, crypto)) {
change_buffers[type].PushUpdatedItem(handle);
}
SetExtraChangeRecordData(handle, type, &change_buffers[type], crypto,
it->second.original, existed_before, exists_now);
}
ReadTransaction read_trans(GetUserShare(), trans);
for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
if (!change_buffers[i].IsEmpty()) {
if (change_buffers[i].GetAllChangesInTreeOrder(&read_trans,
&(change_records_[i]))) {
for (size_t j = 0; j < change_records_[i].Get().size(); ++j)
entries_changed->push_back((change_records_[i].Get())[j].id);
}
if (change_records_[i].Get().empty())
change_records_.erase(i);
}
}
}
TimeDelta SyncManagerImpl::GetNudgeDelayTimeDelta(
const ModelType& model_type) {
return NudgeStrategy::GetNudgeDelayTimeDelta(model_type, this);
}
void SyncManagerImpl::RequestNudgeForDataTypes(
const tracked_objects::Location& nudge_location,
ModelTypeSet types) {
debug_info_event_listener_.OnNudgeFromDatatype(types.First().Get());
// TODO(lipalani) : Calculate the nudge delay based on all types.
base::TimeDelta nudge_delay = NudgeStrategy::GetNudgeDelayTimeDelta(
types.First().Get(),
this);
scheduler_->ScheduleLocalNudge(nudge_delay,
types,
nudge_location);
}
void SyncManagerImpl::OnSyncCycleEvent(const SyncCycleEvent& event) {
DCHECK(thread_checker_.CalledOnValidThread());
// Only send an event if this is due to a cycle ending and this cycle
// concludes a canonical "sync" process; that is, based on what is known
// locally we are "all happy" and up-to-date. There may be new changes on
// the server, but we'll get them on a subsequent sync.
//
// Notifications are sent at the end of every sync cycle, regardless of
// whether we should sync again.
if (event.what_happened == SyncCycleEvent::SYNC_CYCLE_ENDED) {
if (!initialized_) {
DVLOG(1) << "OnSyncCycleCompleted not sent because sync api is not "
<< "initialized";
return;
}
DVLOG(1) << "Sending OnSyncCycleCompleted";
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnSyncCycleCompleted(event.snapshot));
}
}
void SyncManagerImpl::OnActionableError(const SyncProtocolError& error) {
FOR_EACH_OBSERVER(
SyncManager::Observer, observers_,
OnActionableError(error));
}
void SyncManagerImpl::OnRetryTimeChanged(base::Time) {}
void SyncManagerImpl::OnThrottledTypesChanged(ModelTypeSet) {}
void SyncManagerImpl::OnMigrationRequested(ModelTypeSet types) {
FOR_EACH_OBSERVER(
SyncManager::Observer, observers_,
OnMigrationRequested(types));
}
void SyncManagerImpl::OnProtocolEvent(const ProtocolEvent& event) {
protocol_event_buffer_.RecordProtocolEvent(event);
FOR_EACH_OBSERVER(SyncManager::Observer, observers_,
OnProtocolEvent(event));
}
void SyncManagerImpl::SetJsEventHandler(
const WeakHandle<JsEventHandler>& event_handler) {
js_sync_manager_observer_.SetJsEventHandler(event_handler);
js_mutation_event_observer_.SetJsEventHandler(event_handler);
js_sync_encryption_handler_observer_.SetJsEventHandler(event_handler);
}
void SyncManagerImpl::ProcessJsMessage(
const std::string& name, const JsArgList& args,
const WeakHandle<JsReplyHandler>& reply_handler) {
if (!initialized_) {
NOTREACHED();
return;
}
if (!reply_handler.IsInitialized()) {
DVLOG(1) << "Uninitialized reply handler; dropping unknown message "
<< name << " with args " << args.ToString();
return;
}
JsMessageHandler js_message_handler = js_message_handlers_[name];
if (js_message_handler.is_null()) {
DVLOG(1) << "Dropping unknown message " << name
<< " with args " << args.ToString();
return;
}
reply_handler.Call(FROM_HERE,
&JsReplyHandler::HandleJsReply,
name, js_message_handler.Run(args));
}
void SyncManagerImpl::BindJsMessageHandler(
const std::string& name,
UnboundJsMessageHandler unbound_message_handler) {
js_message_handlers_[name] =
base::Bind(unbound_message_handler, base::Unretained(this));
}
JsArgList SyncManagerImpl::GetClientServerTraffic(
const JsArgList& args) {
base::ListValue return_args;
base::ListValue* value = traffic_recorder_.ToValue();
if (value != NULL)
return_args.Append(value);
return JsArgList(&return_args);