package com.qcloud.cmq;
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import com.qcloud.cmq.Json.*;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.TreeMap;
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/**
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* Queue class.
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*
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* @author York.
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* Created 2016年9月26日.
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*/
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public class Queue{
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protected String queueName;
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protected CMQClient client;
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Queue(String queueName, CMQClient client){
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this.queueName = queueName;
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this.client = client;
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}
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/**
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* 设置队列属性
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*
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* @param meta 队列属性参数
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public void setQueueAttributes(QueueMeta meta) throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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if(meta.maxMsgHeapNum > 0)
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param.put("maxMsgHeapNum",Integer.toString(meta.maxMsgHeapNum));
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if(meta.pollingWaitSeconds > 0)
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param.put("pollingWaitSeconds",Integer.toString(meta.pollingWaitSeconds));
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if(meta.visibilityTimeout > 0)
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param.put("visibilityTimeout",Integer.toString(meta.visibilityTimeout));
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if(meta.maxMsgSize > 0)
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param.put("maxMsgSize",Integer.toString(meta.maxMsgSize));
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if(meta.msgRetentionSeconds > 0)
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param.put("msgRetentionSeconds",Integer.toString(meta.msgRetentionSeconds));
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String result = this.client.call("SetQueueAttributes", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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}
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/**
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* 获取队列属性
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*
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* @return 返回的队列属性参数
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public QueueMeta getQueueAttributes() throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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String result = this.client.call("GetQueueAttributes", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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QueueMeta meta = new QueueMeta();
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meta.maxMsgHeapNum = jsonObj.getInt("maxMsgHeapNum");
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meta.pollingWaitSeconds = jsonObj.getInt("pollingWaitSeconds");
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meta.visibilityTimeout = jsonObj.getInt("visibilityTimeout");
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meta.maxMsgSize = jsonObj.getInt("maxMsgSize");
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meta.msgRetentionSeconds = jsonObj.getInt("msgRetentionSeconds");
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meta.createTime = jsonObj.getInt("createTime");
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meta.lastModifyTime = jsonObj.getInt("lastModifyTime");
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meta.activeMsgNum = jsonObj.getInt("activeMsgNum");
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meta.inactiveMsgNum = jsonObj.getInt("inactiveMsgNum");
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meta.rewindmsgNum = jsonObj.getInt("rewindMsgNum");
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meta.minMsgTime = jsonObj.getInt("minMsgTime");
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meta.delayMsgNum = jsonObj.getInt("delayMsgNum");
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return meta;
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}
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/**
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* 发送消息
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*
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* @param msgBody 消息内容
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* @return 服务器返回的消息唯一标识
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public String sendMessage(String msgBody) throws Exception {
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return sendMessage(msgBody, 0);
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}
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public String sendMessage(String msgBody ,int delayTime) throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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param.put("msgBody",msgBody);
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param.put("delaySeconds",Integer.toString(delayTime));
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String result = this.client.call("SendMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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return jsonObj.getString("msgId");
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}
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/**
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* 批量发送消息
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*
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* @param vtMsgBody 消息列表
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* @return 服务器返回的消息唯一标识列表
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public List<String> batchSendMessage(List<String> vtMsgBody) throws Exception {
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return batchSendMessage(vtMsgBody, 0);
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}
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public List<String> batchSendMessage(List<String> vtMsgBody,int delayTime) throws Exception {
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if(vtMsgBody.isEmpty() || vtMsgBody.size() > 16)
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throw new CMQClientException("Error: message size is empty or more than 16");
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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for(int i=0;i<vtMsgBody.size();i++)
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{
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String k = "msgBody." + Integer.toString(i+1);
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param.put(k,vtMsgBody.get(i));
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}
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param.put("delaySeconds", Integer.toString(delayTime));
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String result = this.client.call("BatchSendMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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ArrayList<String> vtMsgId = new ArrayList<String>();
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JSONArray jsonArray = jsonObj.getJSONArray("msgList");
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for(int i=0;i<jsonArray.length();i++)
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{
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JSONObject obj = (JSONObject)jsonArray.get(i);
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vtMsgId.add(obj.getString("msgId"));
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}
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return vtMsgId;
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}
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/**
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* 获取消息
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*
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* @param pollingWaitSeconds 请求最长的Polling等待时间
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* @return 服务器返回消息
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public Message receiveMessage(int pollingWaitSeconds) throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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if(pollingWaitSeconds > 0)
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{
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param.put("UserpollingWaitSeconds",Integer.toString(pollingWaitSeconds *1000));
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param.put("pollingWaitSeconds", Integer.toString(pollingWaitSeconds) );
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}
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else
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{
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param.put("UserpollingWaitSeconds",Integer.toString(30000));
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}
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String result = this.client.call("ReceiveMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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Message msg = new Message();
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msg.msgId = jsonObj.getString("msgId");
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msg.receiptHandle = jsonObj.getString("receiptHandle");
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msg.msgBody = jsonObj.getString("msgBody");
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msg.enqueueTime = jsonObj.getLong("enqueueTime");
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msg.nextVisibleTime = jsonObj.getLong("nextVisibleTime");
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msg.firstDequeueTime = jsonObj.getLong("firstDequeueTime");
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msg.dequeueCount = jsonObj.getInt("dequeueCount");
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return msg;
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}
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/**
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* 批量获取消息
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*
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* @param numOfMsg 准备获取消息数
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* @param pollingWaitSeconds 请求最长的Polling等待时间
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* @return 服务器返回消息列表
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public List<Message> batchReceiveMessage(int numOfMsg, int pollingWaitSeconds) throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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param.put("numOfMsg",Integer.toString(numOfMsg));
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if(pollingWaitSeconds > 0)
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{
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param.put("UserpollingWaitSeconds",Integer.toString(pollingWaitSeconds*1000));
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param.put("pollingWaitSeconds", Integer.toString(pollingWaitSeconds) );
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}
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else
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{
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param.put("UserpollingWaitSeconds",Integer.toString(30000));
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}
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String result = this.client.call("BatchReceiveMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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ArrayList<Message> vtMessage = new ArrayList<Message>();
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JSONArray jsonArray = jsonObj.getJSONArray("msgInfoList");
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for(int i=0;i<jsonArray.length();i++)
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{
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JSONObject obj = (JSONObject)jsonArray.get(i);
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Message msg = new Message();
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msg.msgId = obj.getString("msgId");
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msg.receiptHandle = obj.getString("receiptHandle");
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msg.msgBody = obj.getString("msgBody");
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msg.enqueueTime = obj.getLong("enqueueTime");
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msg.nextVisibleTime = obj.getLong("nextVisibleTime");
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msg.firstDequeueTime = obj.getLong("firstDequeueTime");
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msg.dequeueCount = obj.getInt("dequeueCount");
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vtMessage.add(msg);
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}
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return vtMessage;
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}
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/**
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* 删除消息
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*
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* @param receiptHandle 消息句柄,获取消息时由服务器返回
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public void deleteMessage(String receiptHandle) throws Exception {
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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param.put("receiptHandle",receiptHandle);
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String result = this.client.call("DeleteMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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}
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/**
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* 批量删除消息
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*
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* @param receiptHandle 消息句柄列表，获取消息时由服务器返回
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* @throws CMQClientException
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* @throws CMQServerException
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*/
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public void batchDeleteMessage(List<String> vtReceiptHandle) throws Exception {
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if(vtReceiptHandle.isEmpty())
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return;
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TreeMap<String, String> param = new TreeMap<String, String>();
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param.put("queueName",this.queueName);
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for(int i=0;i<vtReceiptHandle.size();i++)
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{
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String k = "receiptHandle." + Integer.toString(i+1);
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param.put(k,vtReceiptHandle.get(i));
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}
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String result = this.client.call("BatchDeleteMessage", param);
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JSONObject jsonObj = new JSONObject(result);
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int code = jsonObj.getInt("code");
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if(code != 0)
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throw new CMQServerException(code,jsonObj.getString("message"),jsonObj.getString("requestId"));
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}
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}
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