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// Copyright 2018 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_LOADER_SOURCE_STREAM_TO_DATA_PIPE_H_
#define CONTENT_BROWSER_LOADER_SOURCE_STREAM_TO_DATA_PIPE_H_
#include "base/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "mojo/public/cpp/system/simple_watcher.h"
#include "services/network/public/cpp/net_adapters.h"
namespace net {
class SourceStream;
}
namespace content {
// A convenient adapter class to read out data from net::SourceStream
// and write them into a data pipe.
class CONTENT_EXPORT SourceStreamToDataPipe {
public:
// Reads out the data from |source| and write into |dest|.
SourceStreamToDataPipe(std::unique_ptr<net::SourceStream> source,
mojo::ScopedDataPipeProducerHandle dest,
base::OnceCallback<void(int)> completion_callback);
~SourceStreamToDataPipe();
// Start reading the source.
void Start();
int64_t TransferredBytes() const { return transferred_bytes_; }
private:
void ReadMore();
void DidRead(int result);
void OnDataPipeWritable(MojoResult result);
void OnDataPipeClosed(MojoResult result);
void OnComplete(int result);
std::unique_ptr<net::SourceStream> source_;
mojo::ScopedDataPipeProducerHandle dest_;
base::OnceCallback<void(int)> completion_callback_;
int64_t transferred_bytes_ = 0;
scoped_refptr<network::NetToMojoPendingBuffer> pending_write_;
mojo::SimpleWatcher writable_handle_watcher_;
base::WeakPtrFactory<SourceStreamToDataPipe> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_LOADER_SOURCE_STREAM_TO_DATA_PIPE_H_
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