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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include "mongo/base/disallow_copying.h"
#include "mongo/base/status.h"
#include "mongo/logger/appender.h"
#include "mongo/logger/encoder.h"
#include "mongo/logger/rotatable_file_writer.h"
namespace mongo {
namespace logger {
/**
* Appender for writing to instances of RotatableFileWriter.
*/
template <typename Event>
class RotatableFileAppender : public Appender<Event> {
MONGO_DISALLOW_COPYING(RotatableFileAppender);
public:
typedef Encoder<Event> EventEncoder;
// TODO: Remove this ctor once raw pointer use is gone
RotatableFileAppender(EventEncoder* encoder, RotatableFileWriter* writer)
: _encoder(encoder), _writer(writer) {}
/**
* Constructs an appender, that owns "encoder", but not "writer." Caller must
* keep "writer" in scope at least as long as the constructed appender.
*/
RotatableFileAppender(std::unique_ptr<EventEncoder> encoder, RotatableFileWriter* writer)
: _encoder(std::move(encoder)), _writer(writer) {}
virtual Status append(const Event& event) {
RotatableFileWriter::Use useWriter(_writer);
Status status = useWriter.status();
if (!status.isOK())
return status;
_encoder->encode(event, useWriter.stream()).flush();
return useWriter.status();
}
private:
std::unique_ptr<EventEncoder> _encoder;
RotatableFileWriter* _writer;
};
} // namespace logger
} // namespace mongo
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