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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOWNLOAD_PUBLIC_COMMON_STREAM_HANDLE_INPUT_STREAM_H_
#define COMPONENTS_DOWNLOAD_PUBLIC_COMMON_STREAM_HANDLE_INPUT_STREAM_H_
#include "components/download/public/common/download_export.h"
#include "components/download/public/common/download_stream.mojom.h"
#include "components/download/public/common/input_stream.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/system/simple_watcher.h"
namespace download {
// Download input stream backed by a DownloadStreamHandle.
class COMPONENTS_DOWNLOAD_EXPORT StreamHandleInputStream
: public InputStream,
public mojom::DownloadStreamClient {
public:
explicit StreamHandleInputStream(
mojom::DownloadStreamHandlePtr stream_handle);
StreamHandleInputStream(const StreamHandleInputStream&) = delete;
StreamHandleInputStream& operator=(const StreamHandleInputStream&) = delete;
~StreamHandleInputStream() override;
// InputStream
void Initialize() override;
bool IsEmpty() override;
void RegisterDataReadyCallback(
const mojo::SimpleWatcher::ReadyCallback& callback) override;
void ClearDataReadyCallback() override;
void RegisterCompletionCallback(base::OnceClosure callback) override;
InputStream::StreamState Read(scoped_refptr<net::IOBuffer>* data,
size_t* length) override;
DownloadInterruptReason GetCompletionStatus() override;
// mojom::DownloadStreamClient
void OnStreamCompleted(mojom::NetworkRequestStatus status) override;
private:
// Objects for consuming a mojo data pipe.
mojom::DownloadStreamHandlePtr stream_handle_;
std::unique_ptr<mojo::SimpleWatcher> handle_watcher_;
std::unique_ptr<mojo::Receiver<mojom::DownloadStreamClient>> receiver_;
// Whether the producer has completed handling the response.
bool is_response_completed_;
// Status when the response completes, used by data pipe.
DownloadInterruptReason completion_status_;
// Callback to run when stream completes.
base::OnceClosure completion_callback_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace download
#endif // COMPONENTS_DOWNLOAD_PUBLIC_COMMON_STREAM_HANDLE_INPUT_STREAM_H_
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