Index: sync/internal_api/public/attachments/attachment_store_frontend.h |
diff --git a/sync/internal_api/public/attachments/attachment_store_frontend.h b/sync/internal_api/public/attachments/attachment_store_frontend.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ec4a33f24f661e381029968b56f333212e32238a |
--- /dev/null |
+++ b/sync/internal_api/public/attachments/attachment_store_frontend.h |
@@ -0,0 +1,69 @@ |
+// 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. |
+ |
+#ifndef SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_ |
+#define SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_ |
+ |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/threading/non_thread_safe.h" |
+#include "sync/api/attachments/attachment_store.h" |
+ |
+namespace base { |
+class SequencedTaskRunner; |
+} // namespace base |
+ |
+namespace syncer { |
+ |
+class AttachmentStoreBackend; |
+ |
+// AttachmentStoreFrontend is helper to post AttachmentStore calls to backend on |
+// different thread. Backend is expected to know on which thread to post |
+// callbacks with results. |
+// AttachmentStoreFrontend takes ownership of backend. Backend is deleted on |
+// backend thread. |
+// AttachmentStoreFrontend is not thread safe, it should only be accessed from |
+// model thread. |
+// Method signatures of AttachmentStoreFrontend match exactly methods of |
+// AttachmentStoreBackend. |
+class SYNC_EXPORT AttachmentStoreFrontend |
+ : public base::RefCounted<AttachmentStoreFrontend>, |
+ public base::NonThreadSafe { |
+ public: |
+ AttachmentStoreFrontend( |
+ scoped_ptr<AttachmentStoreBackend> backend, |
+ const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner); |
+ |
+ void Init(const AttachmentStore::InitCallback& callback); |
+ |
+ void Read(const AttachmentIdList& ids, |
+ const AttachmentStore::ReadCallback& callback); |
+ |
+ void Write(AttachmentStore::AttachmentReferrer referrer, |
+ const AttachmentList& attachments, |
+ const AttachmentStore::WriteCallback& callback); |
+ |
+ void Drop(AttachmentStore::AttachmentReferrer referrer, |
+ const AttachmentIdList& ids, |
+ const AttachmentStore::DropCallback& callback); |
+ |
+ void ReadMetadata(const AttachmentIdList& ids, |
+ const AttachmentStore::ReadMetadataCallback& callback); |
+ |
+ void ReadAllMetadata(AttachmentStore::AttachmentReferrer referrer, |
+ const AttachmentStore::ReadMetadataCallback& callback); |
+ |
+ private: |
+ friend class base::RefCounted<AttachmentStoreFrontend>; |
+ virtual ~AttachmentStoreFrontend(); |
+ |
+ scoped_ptr<AttachmentStoreBackend> backend_; |
+ scoped_refptr<base::SequencedTaskRunner> backend_task_runner_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(AttachmentStoreFrontend); |
+}; |
+ |
+} // namespace syncer |
+ |
+#endif // SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_ |