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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_DEVTOOLS_DEVTOOLS_STREAM_BLOB_H_
#define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_STREAM_BLOB_H_
#include "base/callback.h"
#include "base/containers/queue.h"
#include "base/memory/scoped_refptr.h"
#include "content/browser/devtools/devtools_io_context.h"
#include "net/base/net_errors.h"
#include "storage/common/blob_storage/blob_storage_constants.h"
#include <memory>
namespace net {
class IOBufferWithSize;
}
namespace storage {
class BlobDataHandle;
class BlobReader;
} // namespace storage
namespace content {
class ChromeBlobStorageContext;
class StoragePartition;
class DevToolsStreamBlob : public DevToolsIOContext::Stream {
public:
using OpenCallback = base::OnceCallback<void(bool)>;
static scoped_refptr<DevToolsIOContext::Stream> Create(
DevToolsIOContext* io_context,
ChromeBlobStorageContext* blob_context,
StoragePartition* partition,
const std::string& handle,
const std::string& uuid);
private:
DevToolsStreamBlob();
void Open(scoped_refptr<ChromeBlobStorageContext> context,
StoragePartition* partition,
const std::string& handle,
OpenCallback callback);
void Read(off_t position, size_t max_size, ReadCallback callback) override;
struct ReadRequest {
off_t position;
size_t max_size;
ReadCallback callback;
void Fail();
ReadRequest() = delete;
ReadRequest(off_t position, size_t max_size, ReadCallback callback);
~ReadRequest();
};
~DevToolsStreamBlob() override;
void OpenOnIO(scoped_refptr<ChromeBlobStorageContext> blob_context,
const std::string& uuid,
OpenCallback callback);
void ReadOnIO(std::unique_ptr<ReadRequest> request);
void CloseOnIO(bool invoke_pending_callbacks);
void FailOnIO();
void FailOnIO(OpenCallback callback);
void StartReadRequest();
void CreateReader();
void BeginRead();
void OnReadComplete(int bytes_read);
void OnBlobConstructionComplete(storage::BlobStatus status);
void OnCalculateSizeComplete(int net_error);
std::unique_ptr<storage::BlobDataHandle> blob_handle_;
OpenCallback open_callback_;
std::unique_ptr<storage::BlobReader> blob_reader_;
base::queue<std::unique_ptr<ReadRequest>> pending_reads_;
scoped_refptr<net::IOBufferWithSize> io_buf_;
off_t last_read_pos_;
bool failed_;
bool is_binary_;
};
} // namespace content
#endif // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_STREAM_BLOB_H_
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