/*    Copyright 2013 10gen Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    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
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    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 GNU Affero General 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/status.h"

namespace mongo {
namespace logger {

/**
 * Interface for sinks in a logging system.  The core of logging is when events of type E are
 * appended to instances of Appender<E>.
 *
 * Example concrete instances are ConsoleAppender<E>, SyslogAppender<E> and
 * RotatableFileAppender<E>.
 */
template <typename E>
class Appender {
public:
    typedef E Event;

    virtual ~Appender() {}

    /**
     * Appends "event", returns Status::OK() on success.
     */
    virtual Status append(const Event& event) = 0;
};

}  // namespace logger
}  // namespace mongo