/*
 * FileTraceLogWriter.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2018 Apple Inc. and the FoundationDB project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#ifndef FLOW_FILE_TRACE_LOG_WRITER_H
#define FLOW_FILE_TRACE_LOG_WRITER_H
#pragma once

#include "flow/FastRef.h"
#include "flow/Trace.h"

#include <functional>

class FileTraceLogWriter : public ITraceLogWriter, ReferenceCounted<FileTraceLogWriter> {
private:
	std::string directory;
	std::string processName;
	std::string basename;
	std::string extension;

	uint64_t maxLogsSize;
	int traceFileFD;
	int index;

	std::function<void()> onError;

public:
	FileTraceLogWriter(std::string directory, std::string processName, std::string basename, std::string extension, uint64_t maxLogsSize, std::function<void()> onError);

	void addref();
	void delref();

	void lastError(int err);

	void write(const std::string& str);
	void open();
	void close();
	void roll();
	void sync();

	static void extractTraceFileNameInfo(std::string const& filename, std::string &root, int &index);
	static bool compareTraceFileName (std::string const& f1, std::string const& f2);
	static bool reverseCompareTraceFileName(std::string f1, std::string f2);

	void cleanupTraceFiles();
};

#endif
