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// Copyright 2014 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/extensions/api/storage/sync_value_store_cache.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/sequenced_task_runner.h"
#include "chrome/browser/extensions/api/storage/sync_storage_backend.h"
#include "chrome/browser/sync/glue/sync_start_util.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/browser/api/storage/settings_storage_quota_enforcer.h"
#include "extensions/browser/api/storage/storage_frontend.h"
#include "extensions/common/api/storage.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
using content::BrowserThread;
namespace extensions {
namespace {
// Returns the quota limit for sync storage, taken from the schema in
// extensions/common/api/storage.json.
SettingsStorageQuotaEnforcer::Limits GetSyncQuotaLimits() {
SettingsStorageQuotaEnforcer::Limits limits = {
static_cast<size_t>(core_api::storage::sync::QUOTA_BYTES),
static_cast<size_t>(core_api::storage::sync::QUOTA_BYTES_PER_ITEM),
static_cast<size_t>(core_api::storage::sync::MAX_ITEMS)
};
return limits;
}
} // namespace
SyncValueStoreCache::SyncValueStoreCache(
const scoped_refptr<SettingsStorageFactory>& factory,
const scoped_refptr<SettingsObserverList>& observers,
const base::FilePath& profile_path)
: initialized_(false) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// This post is safe since the destructor can only be invoked from the
// same message loop, and any potential post of a deletion task must come
// after the constructor returns.
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&SyncValueStoreCache::InitOnFileThread,
base::Unretained(this),
factory, observers, profile_path));
}
SyncValueStoreCache::~SyncValueStoreCache() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
}
syncer::SyncableService* SyncValueStoreCache::GetSyncableService(
syncer::ModelType type) const {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
DCHECK(initialized_);
switch (type) {
case syncer::APP_SETTINGS:
return app_backend_.get();
case syncer::EXTENSION_SETTINGS:
return extension_backend_.get();
default:
NOTREACHED();
return NULL;
}
}
void SyncValueStoreCache::RunWithValueStoreForExtension(
const StorageCallback& callback,
scoped_refptr<const Extension> extension) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
DCHECK(initialized_);
SyncStorageBackend* backend =
extension->is_app() ? app_backend_.get() : extension_backend_.get();
callback.Run(backend->GetStorage(extension->id()));
}
void SyncValueStoreCache::DeleteStorageSoon(const std::string& extension_id) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
app_backend_->DeleteStorage(extension_id);
extension_backend_->DeleteStorage(extension_id);
}
void SyncValueStoreCache::InitOnFileThread(
const scoped_refptr<SettingsStorageFactory>& factory,
const scoped_refptr<SettingsObserverList>& observers,
const base::FilePath& profile_path) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
DCHECK(!initialized_);
app_backend_.reset(new SyncStorageBackend(
factory,
profile_path.AppendASCII(kSyncAppSettingsDirectoryName),
GetSyncQuotaLimits(),
observers,
syncer::APP_SETTINGS,
sync_start_util::GetFlareForSyncableService(profile_path)));
extension_backend_.reset(new SyncStorageBackend(
factory,
profile_path.AppendASCII(kSyncExtensionSettingsDirectoryName),
GetSyncQuotaLimits(),
observers,
syncer::EXTENSION_SETTINGS,
sync_start_util::GetFlareForSyncableService(profile_path)));
initialized_ = true;
}
} // namespace extensions
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