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// Copyright (c) 2010 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/glue/session_change_processor.h"
#include <sstream>
#include <string>
#include "base/logging.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/sync/engine/syncapi.h"
#include "chrome/browser/sync/glue/session_model_associator.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
namespace browser_sync {
SessionChangeProcessor::SessionChangeProcessor(
UnrecoverableErrorHandler* error_handler,
SessionModelAssociator* session_model_associator)
: ChangeProcessor(error_handler),
session_model_associator_(session_model_associator),
profile_(NULL) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
DCHECK(error_handler);
DCHECK(session_model_associator_);
}
SessionChangeProcessor::~SessionChangeProcessor() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
}
void SessionChangeProcessor::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
DCHECK(running());
DCHECK(profile_);
switch (type.value) {
case NotificationType::SESSION_SERVICE_SAVED: {
std::string tag = session_model_associator_->GetCurrentMachineTag();
DCHECK_EQ(Source<Profile>(source).ptr(), profile_);
LOG(INFO) << "Got change notification of type " << type.value
<< " for session " << tag;
session_model_associator_->UpdateSyncModelDataFromClient();
break;
}
default:
LOG(DFATAL) << "Received unexpected notification of type "
<< type.value;
break;
}
}
void SessionChangeProcessor::ApplyChangesFromSyncModel(
const sync_api::BaseTransaction* trans,
const sync_api::SyncManager::ChangeRecord* changes,
int change_count) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
if (!running()) {
return;
}
for (int i = 0; i < change_count; ++i) {
const sync_api::SyncManager::ChangeRecord& change = changes[i];
switch (change.action) {
case sync_api::SyncManager::ChangeRecord::ACTION_ADD:
UpdateModel(trans, change, true);
break;
case sync_api::SyncManager::ChangeRecord::ACTION_UPDATE:
UpdateModel(trans, change, true);
break;
case sync_api::SyncManager::ChangeRecord::ACTION_DELETE:
UpdateModel(trans, change, false);
break;
}
}
}
void SessionChangeProcessor::UpdateModel(const sync_api::BaseTransaction* trans,
const sync_api::SyncManager::ChangeRecord& change, bool associate) {
sync_api::ReadNode node(trans);
if (!node.InitByIdLookup(change.id)) {
std::stringstream error;
error << "Session node lookup failed for change " << change.id
<< " of action type " << change.action;
error_handler()->OnUnrecoverableError(FROM_HERE, error.str());
return;
}
DCHECK_EQ(node.GetModelType(), syncable::SESSIONS);
StopObserving();
if (associate) {
session_model_associator_->Associate(
(const sync_pb::SessionSpecifics *) NULL, node.GetId());
} else {
session_model_associator_->Disassociate(node.GetId());
}
StartObserving();
}
void SessionChangeProcessor::StartImpl(Profile* profile) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
DCHECK(profile);
DCHECK(profile_ == NULL);
profile_ = profile;
StartObserving();
}
void SessionChangeProcessor::StopImpl() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
StopObserving();
profile_ = NULL;
}
void SessionChangeProcessor::StartObserving() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
DCHECK(profile_);
LOG(INFO) << "Observing SESSION_SERVICE_SAVED";
notification_registrar_.Add(
this, NotificationType::SESSION_SERVICE_SAVED,
Source<Profile>(profile_));
}
void SessionChangeProcessor::StopObserving() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
DCHECK(profile_);
LOG(INFO) << "removing observation of all notifications";
notification_registrar_.RemoveAll();
}
} // namespace browser_sync
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