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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | |
| 6 #define BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/memory/weak_ptr.h" | |
| 12 #include "base/threading/thread_checker.h" | |
| 13 #include "blimp/engine/mojo/blob_channel.mojom.h" | |
| 14 #include "blimp/net/blob_channel/blob_channel_sender.h" | |
| 15 #include "mojo/public/cpp/bindings/binding_set.h" | |
| 16 | |
| 17 namespace blimp { | |
| 18 namespace engine { | |
| 19 | |
| 20 // Service for processing BlobChannel requests from the renderer. | |
| 21 // Caller is responsible for executing all methods on the IO thread. | |
| 22 // The class may interact with objects on the UI thread by posting tasks to | |
| 23 // |ui_task_runner_|. | |
| 24 class BlobChannelService : public mojom::BlobChannel { | |
| 25 public: | |
| 26 // |blob_channel_sender|: The BlobChannelSender object which will receive | |
| 27 // blobs and answer delivery status queries. | |
| 28 // |blob_sender_task_runner|: The task runner that will process all | |
| 29 // interactions with |blob_channel_sender|. | |
| 30 BlobChannelService( | |
| 31 base::WeakPtr<BlobChannelSender> blob_channel_sender, | |
| 32 scoped_refptr<base::SingleThreadTaskRunner> blob_sender_task_runner); | |
| 33 | |
| 34 ~BlobChannelService() override; | |
| 35 | |
| 36 // Factory method called by Mojo. | |
| 37 // Binds |this| to the connection specified by |request|. | |
| 38 void BindRequest(mojo::InterfaceRequest<mojom::BlobChannel> request); | |
| 39 | |
| 40 private: | |
| 41 std::vector<BlobChannelSender::CacheStateEntry> GetCachedBlobIdsOnUiThread(); | |
| 42 | |
| 43 // Processes the return value from BlobChannelSender::GetCachedBlobIds(). | |
| 44 void OnGetCachedBlobsCompleted( | |
| 45 const BlobChannelService::GetCachedBlobIdsCallback& response_callback, | |
| 46 const std::vector<BlobChannelSender::CacheStateEntry>& ids); | |
| 47 | |
| 48 // BlobChannel implementation. | |
| 49 void GetCachedBlobIds( | |
| 50 const GetCachedBlobIdsCallback& response_callback) override; | |
| 51 void PutBlob(const std::string& id, | |
| 52 mojo::ScopedSharedBufferHandle data, | |
| 53 uint32_t size) override; | |
| 54 void DeliverBlob(const std::string& id) override; | |
| 55 | |
| 56 mojo::BindingSet<mojom::BlobChannel> bindings_; | |
| 57 | |
| 58 // Sender object which will receive the blobs passed over the Mojo service. | |
| 59 base::WeakPtr<BlobChannelSender> blob_channel_sender_; | |
| 60 | |
| 61 // UI thread TaskRunner. | |
| 62 scoped_refptr<base::SingleThreadTaskRunner> blob_sender_task_runner_; | |
| 63 | |
| 64 base::ThreadChecker thread_checker_; | |
| 65 | |
| 66 base::WeakPtrFactory<BlobChannelService> weak_factory_; | |
| 67 | |
| 68 DISALLOW_COPY_AND_ASSIGN(BlobChannelService); | |
| 69 }; | |
| 70 | |
| 71 } // namespace engine | |
| 72 } // namespace blimp | |
| 73 | |
| 74 #endif // BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | |
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