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/**
 * Copyright (C) 2010-2013 Alibaba Group Holding Limited
 * 
 * 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.
 */
package com.alibaba.rocketmq.client.consumer;

import com.alibaba.rocketmq.client.exception.MQBrokerException;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.common.message.MessageExt;
import com.alibaba.rocketmq.common.message.MessageQueue;
import com.alibaba.rocketmq.remoting.exception.RemotingException;

import java.util.Set;


/**
 * Pulling consumer interface
 *
 * @author shijia.wxr
 * @since 2013-7-24
 */
public interface MQPullConsumer extends MQConsumer {
    /**
     * Start the consumer
     *
     * @throws MQClientException
     */
    void start() throws MQClientException;


    /**
     * Shutdown the consumer
     */
    void shutdown();


    /**
     * Register the message queue listener
     *
     * @param topic
     * @param listener
     */
    void registerMessageQueueListener(final String topic, final MessageQueueListener listener);


    /**
     * Pulling the messages,not blocking
     *
     * @param mq
     *         from which message queue
     * @param subExpression
     *         subscription expression.it only support or operation such as "tag1 || tag2 || tag3" 

     *         if null or * expression,meaning subscribe all
     * @param offset
     *         from where to pull
     * @param maxNums
     *         max pulling numbers
     *
     * @return
     *
     * @throws MQClientException
     * @throws InterruptedException
     * @throws MQBrokerException
     * @throws RemotingException
     */
    PullResult pull(final MessageQueue mq, final String subExpression, final long offset,
                    final int maxNums) throws MQClientException, RemotingException, MQBrokerException,
            InterruptedException;


    /**
     * Pulling the messages in the specified timeout
     *
     * @param mq
     * @param subExpression
     * @param offset
     * @param maxNums
     * @param timeout
     *
     * @return
     *
     * @throws MQClientException
     * @throws RemotingException
     * @throws MQBrokerException
     * @throws InterruptedException
     */
    PullResult pull(final MessageQueue mq, final String subExpression, final long offset,
                    final int maxNums, final long timeout) throws MQClientException, RemotingException,
            MQBrokerException, InterruptedException;


    /**
     * Pulling the messages in a async. way
     *
     * @param mq
     * @param subExpression
     * @param offset
     * @param maxNums
     * @param pullCallback
     *
     * @throws MQClientException
     * @throws RemotingException
     * @throws InterruptedException
     */
    void pull(final MessageQueue mq, final String subExpression, final long offset, final int maxNums,
              final PullCallback pullCallback) throws MQClientException, RemotingException,
            InterruptedException;

    /**
     * Pulling the messages in a async. way
     *
     * @param mq
     * @param subExpression
     * @param offset
     * @param maxNums
     * @param pullCallback
     * @param timeout
     *
     * @throws MQClientException
     * @throws RemotingException
     * @throws InterruptedException
     */
    void pull(final MessageQueue mq, final String subExpression, final long offset, final int maxNums,
              final PullCallback pullCallback, long timeout) throws MQClientException, RemotingException,
            InterruptedException;


    /**
     * Pulling the messages,if no message arrival,blocking some time
     *
     * @param mq
     * @param subExpression
     * @param offset
     * @param maxNums
     *
     * @return
     *
     * @throws MQClientException
     * @throws RemotingException
     * @throws MQBrokerException
     * @throws InterruptedException
     */
    PullResult pullBlockIfNotFound(final MessageQueue mq, final String subExpression,
                                   final long offset, final int maxNums) throws MQClientException, RemotingException,
            MQBrokerException, InterruptedException;


    /**
     * Pulling the messages through callback function,if no message arrival,blocking.
     *
     * @param mq
     * @param subExpression
     * @param offset
     * @param maxNums
     * @param pullCallback
     *
     * @throws MQClientException
     * @throws RemotingException
     * @throws InterruptedException
     */
    void pullBlockIfNotFound(final MessageQueue mq, final String subExpression, final long offset,
                             final int maxNums, final PullCallback pullCallback) throws MQClientException, RemotingException,
            InterruptedException;


    /**
     * Update the offset
     *
     * @param mq
     * @param offset
     *
     * @throws MQClientException
     */
    void updateConsumeOffset(final MessageQueue mq, final long offset) throws MQClientException;


    /**
     * Fetch the offset
     *
     * @param mq
     * @param fromStore
     *
     * @return
     *
     * @throws MQClientException
     */
    long fetchConsumeOffset(final MessageQueue mq, final boolean fromStore) throws MQClientException;


    /**
     * Fetch the message queues according to the topic
     *
     * @param topic
     *         message topic
     *
     * @return message queue set
     *
     * @throws MQClientException
     */
    Set fetchMessageQueuesInBalance(final String topic) throws MQClientException;

    /**
     * If consuming failure,message will be send back to the broker,and delay consuming in some time later.

     * Mind! message can only be consumed in the same group.
     *
     * @param msg
     * @param delayLevel
     * @param brokerName
     * @param consumerGroup
     *
     * @throws RemotingException
     * @throws MQBrokerException
     * @throws InterruptedException
     * @throws MQClientException
     */
    void sendMessageBack(MessageExt msg, int delayLevel, String brokerName, String consumerGroup)
            throws RemotingException, MQBrokerException, InterruptedException, MQClientException;
}