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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/notifier/invalidator_factory.h"
#include <string>
#include "base/base64.h"
#include "base/logging.h"
#include "base/rand_util.h"
#include "jingle/notifier/listener/push_client.h"
#include "sync/notifier/invalidator.h"
#include "sync/notifier/non_blocking_invalidator.h"
#include "sync/notifier/p2p_invalidator.h"
namespace syncer {
namespace {
Invalidator* CreateDefaultInvalidator(
const notifier::NotifierOptions& notifier_options,
const std::string& invalidator_client_id,
const InvalidationStateMap& initial_invalidation_state_map,
const std::string& invalidation_bootstrap_data,
const WeakHandle<InvalidationStateTracker>& invalidation_state_tracker,
const std::string& client_info) {
if (notifier_options.notification_method == notifier::NOTIFICATION_P2P) {
// TODO(rlarocque): Ideally, the notification target would be
// NOTIFY_OTHERS. There's no good reason to notify ourselves of our own
// commits. We self-notify for now only because the integration tests rely
// on this behaviour. See crbug.com/97780.
return new P2PInvalidator(
notifier::PushClient::CreateDefault(notifier_options),
invalidator_client_id,
NOTIFY_ALL);
}
return new NonBlockingInvalidator(
notifier_options, invalidator_client_id, initial_invalidation_state_map,
invalidation_bootstrap_data, invalidation_state_tracker, client_info);
}
std::string GenerateInvalidatorClientId() {
// Generate a GUID with 128 bits worth of base64-encoded randomness.
// This format is similar to that of sync's cache_guid.
const int kGuidBytes = 128 / 8;
std::string guid;
base::Base64Encode(base::RandBytesAsString(kGuidBytes), &guid);
return guid;
}
} // namespace
// TODO(akalin): Remove the dependency on jingle if OS_ANDROID is defined.
InvalidatorFactory::InvalidatorFactory(
const notifier::NotifierOptions& notifier_options,
const std::string& client_info,
const base::WeakPtr<InvalidationStateTracker>&
invalidation_state_tracker)
: notifier_options_(notifier_options),
client_info_(client_info) {
if (!invalidation_state_tracker.get()) {
return;
}
// TODO(rlarocque): This is not the most obvious place for client ID
// generation code. We should try to find a better place for it when we
// refactor the invalidator into its own service.
if (invalidation_state_tracker->GetInvalidatorClientId().empty()) {
// This also clears any existing state. We can't reuse old invalidator
// state with the new ID anyway.
invalidation_state_tracker->SetInvalidatorClientId(
GenerateInvalidatorClientId());
}
initial_invalidation_state_map_ =
invalidation_state_tracker->GetAllInvalidationStates();
invalidator_client_id_ =
invalidation_state_tracker->GetInvalidatorClientId();
invalidation_bootstrap_data_ = invalidation_state_tracker->GetBootstrapData();
invalidation_state_tracker_ = WeakHandle<InvalidationStateTracker>(
invalidation_state_tracker);
}
InvalidatorFactory::~InvalidatorFactory() {
}
Invalidator* InvalidatorFactory::CreateInvalidator() {
#if defined(OS_ANDROID)
// Android uses AndroidInvalidatorBridge instead. See SyncManager
// initialization code in SyncBackendHost for more information.
return NULL;
#else
return CreateDefaultInvalidator(notifier_options_,
invalidator_client_id_,
initial_invalidation_state_map_,
invalidation_bootstrap_data_,
invalidation_state_tracker_,
client_info_);
#endif
}
std::string InvalidatorFactory::GetInvalidatorClientId() const {
return invalidator_client_id_;
}
} // namespace syncer
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