LevelDB storage for data reduction proxy to store data usage stats.

components/data_reduction_proxy/core/browser/db_service.cc

+// Copyright 2015 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 "components/data_reduction_proxy/core/browser/db_service.h"
+
+#include "base/logging.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_store.h"
+#include "components/data_reduction_proxy/core/browser/data_usage_store.h"
+#include "components/data_reduction_proxy/proto/store.pb.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace data_reduction_proxy {
+
+DBService::DBService(scoped_ptr<DataReductionProxyStore> store)
+    : store_(store.Pass()),
+      data_usage_(new DataUsageStore(store_.get())),
+      weak_factory_(this) {
+}
+
+DBService::~DBService() {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());

[jeremyim, 2015/07/01 21:31:01]

Use task_runner, not the named thread pool.

[Not at Google. Contact bengr, 2015/07/01 23:17:38]

Used sequence_checker.

+}
+
+void DBService::InitializeOnDBThread() {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
+
+  store_->InitializeOnDBThread();
+}
+
+void DBService::LoadCurrentDataUsageBucket(DataUsageBucket* bucket) {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
+
+  data_usage_->LoadCurrentDataUsageBucket(bucket);
+}
+
+void DBService::StoreCurrentDataUsageBucket(
+    scoped_ptr<DataUsageBucket> current) {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
+
+  data_usage_->StoreCurrentDataUsageBucket(*current.get());
+}
+
+base::WeakPtr<DBService> DBService::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
+}  // namespace data_reduction_proxy