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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef API_RTC_EVENT_LOG_OUTPUT_FILE_H_
#define API_RTC_EVENT_LOG_OUTPUT_FILE_H_
#include <stddef.h>
#include <stdio.h>
#include <string>
#include "api/rtc_event_log_output.h"
#include "rtc_base/system/file_wrapper.h"
namespace webrtc {
class RtcEventLogOutputFile final : public RtcEventLogOutput {
public:
static const size_t kMaxReasonableFileSize; // Explanation at declaration.
// Unlimited/limited-size output file (by filename).
explicit RtcEventLogOutputFile(const std::string& file_name);
RtcEventLogOutputFile(const std::string& file_name, size_t max_size_bytes);
// Limited-size output file (by FILE*). This class takes ownership
// of the FILE*, and closes it on destruction.
RtcEventLogOutputFile(FILE* file, size_t max_size_bytes);
~RtcEventLogOutputFile() override = default;
bool IsActive() const override;
bool Write(const std::string& output) override;
private:
RtcEventLogOutputFile(FileWrapper file, size_t max_size_bytes);
// IsActive() can be called either from outside or from inside, but we don't
// want to incur the overhead of a virtual function call if called from inside
// some other function of this class.
inline bool IsActiveInternal() const;
// Maximum size, or zero for no limit.
const size_t max_size_bytes_;
size_t written_bytes_{0};
FileWrapper file_;
};
} // namespace webrtc
#endif // API_RTC_EVENT_LOG_OUTPUT_FILE_H_
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