/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 __ORDERCONSUMER_H__
#define __ORDERCONSUMER_H__

#include "MessageOrderListener.h"

namespace ons {

    class ONSCLIENT_API OrderConsumer {
    public:
        OrderConsumer() {}

        virtual ~OrderConsumer() {}

        virtual void start() = 0;

        virtual void shutdown() = 0;

        virtual void subscribe(const char *topic, const char *subExpression,
                               MessageOrderListener *listener) = 0;
    };
}
#endif