public void StartMns(string _topicName)
{
try
{
IMNS client = new Aliyun.MNS.MNSClient(_accessKeyId, _secretAccessKey, _endpoint);
var nativeQueue = client.GetNativeQueue(_topicName);
var receiveMessageRequest = new ReceiveMessageRequest();
receiveMessageRequest.WaitSeconds = 30;
while (isRunning)
{
try
{
nativeQueue.BeginReceiveMessage(receiveMessageRequest, ReceiveMessageCallback, nativeQueue);
_autoSetEvent.WaitOne();
}
catch (MNSException me)
{
throw new ArgumentException("1.接受MNS数据:" + me.Message + me.StackTrace);
}
}
}
catch (Exception err)
{
throw new ArgumentException("接受MNS数据:" + err.Message + err.StackTrace);
}
}
/// 处理消息
public void Handle()
{
while (true)
{
try
{
QueryTokenForMnsQueueResponse.QueryTokenForMnsQueue_MessageTokenDTO token = null;
Queue queue = null;
lock (o)
{
if (tokenMap.ContainsKey(messageType))
{
token = tokenMap[messageType];
}
if (queueMap.ContainsKey(queueName))
{
queue = queueMap[queueName];
}
TimeSpan ts = new TimeSpan(0);
if (token != null)
{
DateTime b = Convert.ToDateTime(token.ExpireTime);
DateTime c = Convert.ToDateTime(DateTime.Now);
ts = b - c;
}
if (token == null || ts.TotalSeconds < bufferTime || queue == null)
{
token = GetTokenByMessageType(acsClient, messageType);
IMNS client = new Aliyun.MNS.MNSClient(token.AccessKeyId, token.AccessKeySecret, mnsAccountEndpoint, token.SecurityToken);
queue = client.GetNativeQueue(queueName);
if (tokenMap.ContainsKey(messageType))
{
tokenMap.Remove(messageType);
}
if (queueMap.ContainsKey(queueName))
{
queueMap.Remove(queueName);
}
tokenMap.Add(messageType, token);
queueMap.Add(queueName, queue);
}
}
BatchReceiveMessageResponse batchReceiveMessageResponse = queue.BatchReceiveMessage(16);
List <Message> messages = batchReceiveMessageResponse.Messages;
for (int i = 0; i <= messages.Count - 1; i++)
{
try
{
byte[] outputb = Convert.FromBase64String(messages[i].Body);
string orgStr = Encoding.UTF8.GetString(outputb);
System.Console.WriteLine(orgStr);
//TODO 具体消费逻辑,待客户自己实现.
//消费成功的前提下删除消息
queue.DeleteMessage(messages[i].ReceiptHandle);
}
catch (Exception e)
{
System.Console.WriteLine("Hello World!", e);
}
}
}
catch (Exception e)
{
System.Console.WriteLine("Handle exception", e);
}
Thread.Sleep(sleepTime);
}
}
