/// <summary>
/// Gets messages from an SQS queue.
/// </summary>
/// <param name="queueUrl">The sqs queue endpoint to get the messages from.</param>
/// <param name="maxMessages">The maximum number of messages to return (max 10)</param>
/// <param name="visibilityTimeout">The number of minutes to hide the message from other consumers for (max 12 hours or 720 minutes)</param>
/// <returns></returns>
public static Amazon.SQS.Model.ReceiveMessageResponse ReceiveMessages(string queueUrl, int maxMessages = 10, int visibilityTimeout = 0)
{
// Check for the maximum number of messages to get.
if (maxMessages > 10)
throw new ArgumentException("The maximum number of messages that can be returned is 10");
// Check that the visibility timeout is okay.
if (visibilityTimeout > 720)
throw new ArgumentException("The maximum amount of time that the message can be hidden for is 12 hours.");
// Get the messages from the queue.
Amazon.SQS.Model.ReceiveMessageResponse response = new Amazon.SQS.Model.ReceiveMessageResponse();
using (Amazon.SQS.IAmazonSQS client = new Factory().SQSClient())
{
Amazon.SQS.Model.ReceiveMessageRequest request = new Amazon.SQS.Model.ReceiveMessageRequest()
{
QueueUrl = queueUrl,
MaxNumberOfMessages = maxMessages
};
if (visibilityTimeout > 0)
{
request.VisibilityTimeout = visibilityTimeout;
}
response = client.ReceiveMessage(request);
}
return response;
}
private TaskQueueData GetTask(Priority oPriority)
{
string strUrlQueue = GetQueueUrl(oPriority);
TaskQueueData oData = null;
try
{
using (Amazon.SQS.AmazonSQS oSQSClient = Amazon.AWSClientFactory.CreateAmazonSQSClient())
{
Amazon.SQS.Model.ReceiveMessageRequest oReceiveMessageRequest = new Amazon.SQS.Model.ReceiveMessageRequest();
oReceiveMessageRequest.QueueUrl = strUrlQueue;
oReceiveMessageRequest.MaxNumberOfMessages = 1;
Amazon.SQS.Model.ReceiveMessageResponse oReceiveMessageResponse = oSQSClient.ReceiveMessage(oReceiveMessageRequest);
if (oReceiveMessageResponse.IsSetReceiveMessageResult())
{
Amazon.SQS.Model.ReceiveMessageResult oReceiveMessageResult = oReceiveMessageResponse.ReceiveMessageResult;
foreach (Amazon.SQS.Model.Message oMessage in oReceiveMessageResult.Message)
{
oData = TaskQueueData.DeserializeFromXml(oMessage.Body);
SQSDataKey oSQSDataKey = new SQSDataKey();
oSQSDataKey.m_oPriority = oPriority;
oSQSDataKey.m_strReceiptHandle = oMessage.ReceiptHandle;
oData.m_oDataKey = oSQSDataKey;
break;
}
}
}
}
catch (Amazon.SQS.AmazonSQSException)
{
}
catch
{
}
return(oData);
}
