| // Copyright 2016 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 BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_RECEIVER_H_ |
| #define BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_RECEIVER_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/synchronization/lock.h" |
| #include "blimp/common/blob_cache/blob_cache.h" |
| #include "blimp/net/blimp_message_processor.h" |
| #include "blimp/net/blimp_net_export.h" |
| |
| namespace blimp { |
| |
| class BlobCache; |
| |
| class BLIMP_NET_EXPORT BlobChannelReceiver { |
| public: |
| class Delegate { |
| public: |
| virtual ~Delegate() {} |
| |
| // Sets the Receiver object which will take incoming blobs. |
| virtual void SetReceiver(BlobChannelReceiver* receiver) = 0; |
| }; |
| |
| virtual ~BlobChannelReceiver() {} |
| |
| // Constructs a BlobChannelReceiverImpl object for use. |
| static std::unique_ptr<BlobChannelReceiver> Create( |
| std::unique_ptr<BlobCache> cache, |
| std::unique_ptr<Delegate> delegate); |
| |
| // Gets a blob from the BlobChannel. |
| // Returns nullptr if the blob is not available in the channel. |
| // Can be accessed concurrently from any thread. Calling code must ensure that |
| // the object instance outlives all calls to Get(). |
| virtual BlobDataPtr Get(const BlobId& id) = 0; |
| |
| // Called by Delegate::OnBlobReceived() when a blob arrives over the channel. |
| virtual void OnBlobReceived(const BlobId& id, BlobDataPtr data) = 0; |
| }; |
| |
| } // namespace blimp |
| |
| #endif // BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_RECEIVER_H_ |