| // Copyright 2017 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATA_PIPE_READER_H_ |
| #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATA_PIPE_READER_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "content/common/content_export.h" |
| #include "mojo/public/cpp/bindings/binding.h" |
| #include "mojo/public/cpp/system/data_pipe.h" |
| #include "mojo/public/cpp/system/simple_watcher.h" |
| #include "third_party/blink/public/mojom/service_worker/service_worker_stream_handle.mojom.h" |
| |
| namespace net { |
| class IOBuffer; |
| } // namespace net |
| |
| namespace content { |
| |
| class ServiceWorkerURLRequestJob; |
| class ServiceWorkerVersion; |
| |
| // Reads a stream response for ServiceWorkerURLRequestJob passed through |
| // Mojo's data pipe. Owned by ServiceWorkerURLRequestJob. |
| class CONTENT_EXPORT ServiceWorkerDataPipeReader |
| : public blink::mojom::ServiceWorkerStreamCallback { |
| public: |
| ServiceWorkerDataPipeReader( |
| ServiceWorkerURLRequestJob* owner, |
| scoped_refptr<ServiceWorkerVersion> streaming_version, |
| blink::mojom::ServiceWorkerStreamHandlePtr stream_handle); |
| ~ServiceWorkerDataPipeReader() override; |
| |
| // Starts reading the stream. Calls owner_->OnResponseStarted. |
| void Start(); |
| |
| // Same as URLRequestJob::ReadRawData. If ERR_IO_PENDING is returned, |
| // owner_->OnReadRawDataComplete will be called when the read completes. |
| int ReadRawData(net::IOBuffer* buf, int buf_size); |
| |
| // Implements mojom::ServiceWorkerStreamCallback. |
| void OnCompleted() override; |
| void OnAborted() override; |
| |
| private: |
| enum class State { kStreaming, kCompleted, kAborted }; |
| |
| // Callback method for |handle_watcher_|. |
| void OnHandleGotSignal(MojoResult); |
| |
| // Finalizes the job. These must be called when state() is not |
| // State::STREAMING. |
| int SyncComplete(); |
| void AsyncComplete(); |
| |
| State state(); |
| |
| ServiceWorkerURLRequestJob* owner_; |
| scoped_refptr<ServiceWorkerVersion> streaming_version_; |
| scoped_refptr<net::IOBuffer> stream_pending_buffer_; |
| int stream_pending_buffer_size_; |
| mojo::SimpleWatcher handle_watcher_; |
| mojo::ScopedDataPipeConsumerHandle stream_; |
| mojo::Binding<blink::mojom::ServiceWorkerStreamCallback> binding_; |
| // State notified via ServiceWorkerStreamCallback. |producer_state_| is |
| // STREAMING until OnCompleted or OnAborted is called. Note that |stream_| |
| // might be closed even if |producer_state_| is STREAMING. In order to see the |
| // state of ServiceWorkerDataPipeReader, use state() instead. |
| State producer_state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDataPipeReader); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DATA_PIPE_READER_H_ |