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// Copyright (c) 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 QUICHE_QUIC_TEST_TOOLS_SIMPLE_DATA_PRODUCER_H_
#define QUICHE_QUIC_TEST_TOOLS_SIMPLE_DATA_PRODUCER_H_
#include "absl/container/flat_hash_map.h"
#include "absl/strings/string_view.h"
#include "quiche/quic/core/quic_stream_frame_data_producer.h"
#include "quiche/quic/core/quic_stream_send_buffer.h"
#include "quiche/common/simple_buffer_allocator.h"
namespace quic {
namespace test {
// A simple data producer which copies stream data into a map from stream
// id to send buffer.
class SimpleDataProducer : public QuicStreamFrameDataProducer {
public:
SimpleDataProducer();
~SimpleDataProducer() override;
// Saves `data` to be provided when WriteStreamData() is called. Multiple
// calls to SaveStreamData() for the same stream ID append to the buffer for
// that stream.
void SaveStreamData(QuicStreamId id, absl::string_view data);
void SaveCryptoData(EncryptionLevel level, QuicStreamOffset offset,
absl::string_view data);
// QuicStreamFrameDataProducer
WriteStreamDataResult WriteStreamData(QuicStreamId id,
QuicStreamOffset offset,
QuicByteCount data_length,
QuicDataWriter* writer) override;
bool WriteCryptoData(EncryptionLevel level, QuicStreamOffset offset,
QuicByteCount data_length,
QuicDataWriter* writer) override;
private:
using SendBufferMap =
absl::flat_hash_map<QuicStreamId, std::unique_ptr<QuicStreamSendBuffer>>;
using CryptoBufferMap =
absl::flat_hash_map<std::pair<EncryptionLevel, QuicStreamOffset>,
std::string>;
quiche::SimpleBufferAllocator allocator_;
SendBufferMap send_buffer_map_;
// |crypto_buffer_map_| stores data provided by SaveCryptoData to later write
// in WriteCryptoData. The level and data passed into SaveCryptoData are used
// as the key to identify the data when WriteCryptoData is called.
// WriteCryptoData will only succeed if there is data in the map for the
// provided level and offset, and the data in the map matches the data_length
// passed into WriteCryptoData.
//
// Unlike SaveStreamData/WriteStreamData which uses a map of
// QuicStreamSendBuffers (for each stream ID), this map provides data for
// specific offsets. Using a QuicStreamSendBuffer requires that all data
// before an offset exist, whereas this allows providing data that exists at
// arbitrary offsets for testing.
CryptoBufferMap crypto_buffer_map_;
};
} // namespace test
} // namespace quic
#endif // QUICHE_QUIC_TEST_TOOLS_SIMPLE_DATA_PRODUCER_H_
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