I'm exploring the AWS SQS service. When trying to delete message from queue using java sdk i'm facing some issue.
A queue is created in SQS and it has three messages. The queue is backed by AWS S3 storage for handling large size messages.
Here is the method used to receive the messages by polling multiple times.
Receive SQS message :
private static void receiveMessage(String queueUrl) {
// Receive messages
ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(queueUrl).withMaxNumberOfMessages(10)
.withWaitTimeSeconds(10).withVisibilityTimeout(100);
List<Message> messages = sqsExtended.receiveMessage(receiveMessageRequest).getMessages();
System.out.println("Number of mesasges : First poll : " + messages.size());
while (messages.size() > 0) {
messages = pollForMessages(messages, receiveMessageRequest, queueUrl);
System.out.println("Messages in next poll : " + messages.size());
}
if (messages.size() > 0) {
System.out.println("displaying last set of messages ");
for (int i = 0; i < messages.size(); i++) {
System.out.println("\nMessage received:");
System.out.println(" ID: " + messages.get(i).getMessageId());
System.out.println(" Receipt handle: " + messages.get(i).getReceiptHandle());
System.out.println("approx. num of messages : "
+ messages.get(i).getAttributes().get("ApproximateNumberOfMessages"));
System.out.println(" Message body (first sentence): " + messages.get(i).getBody().substring(0, 56));
// deleteMessage(messages.get(i), queueUrl);
}
deleteMessage(messages, queueUrl);
}
}
Method to poll for messages:
private static List<Message> pollForMessages(List<Message> messages, ReceiveMessageRequest receiveMessageRequest,
String queueUrl) {
// display the received messages
for (int i = 0; i < messages.size(); i++) {
System.out.println("\nMessage received:");
System.out.println(" ID: " + messages.get(i).getMessageId());
System.out.println(" Receipt handle: " + messages.get(i).getReceiptHandle());
System.out.println(
"approx. num of messages : " + messages.get(i).getAttributes().get("ApproximateNumberOfMessages"));
System.out.println(" Message body (first sentence): " + messages.get(i).getBody().substring(0, 56));
// deleteMessage(messages.get(i), queueUrl);
}
deleteMessage(messages, queueUrl);
messages = sqsExtended.receiveMessage(receiveMessageRequest).getMessages();
return messages;
}
Delete SQS message:
private static void deleteMessage(List<Message> messages, String queueUrl) {
// Delete the messages
for (Message message : messages) {
DeleteMessageRequest dmr = new DeleteMessageRequest();
dmr.withQueueUrl(queueUrl).withReceiptHandle(message.getReceiptHandle());
sqsExtended.deleteMessage(dmr);
System.out.println("Deleted the message with Id : " + message.getMessageId());
}
}
When the call to deleteMessage method is made, the program encounters the below exception:
java.lang.AbstractMethodError: com.amazon.sqs.javamessaging.AmazonSQSExtendedClient.deleteMessage(Lcom/
Log messages:
Apr 21, 2017 5:32:56 PM com.amazon.sqs.javamessaging.ExtendedClientConfiguration setLargePayloadSupportEnabled
INFO: Large-payload support enabled.
Number of mesasges : First poll : 1
Message received:
ID: f4f00368-b308-4763-84cf-8e33e1931fed
Receipt handle: AQEBwhLDOIMobJazre1KoSYoMlHajHD1A6j7gZClk1h4FYWAmFd0p6wIFU69rSuhhVdQef+qF6E6RQIQLWaLqS2r0/Kfw3rUrmppIkTcowsVRW36uJ3p4UqnNjZu0cxncNMw78kHfHRej0gwH0gvvMedZXvEimoXUYZq1+K3Gz35etKsUR9EPKuroYaHZ6Aghdu0Osb4cQu+iLxlBrANhFl63762V7EDEEjSeULyQm52wS/OQq7JiktRWFgyGkp/41tHlN3ARB0v2MM3wXaoZMBt8bAyGURXb+Nx+5e3UoSI5J8pQccSwFnk70N1lV7XUswBTk4549uJ0FPlEMoFef6cxeFi1nxEXkfwIJQ9e93wMJUGLnhsx7rNWhS9w6UCVv4yZoARBsMrQbg287LkACLLnw==
approx. num of messages : null
Message body (first sentence): {
"Type" : "Notification",
"MessageId" : "fc1b19bc-6
Exception in thread "main" java.lang.AbstractMethodError: com.amazon.sqs.javamessaging.AmazonSQSExtendedClient.deleteMessage(Lcom/amazonaws/services/sqs/model/DeleteMessageRequest;)Lcom/amazonaws/services/sqs/model/DeleteMessageResult;
at org.nfjs.aws.sqs.SQSExtendedClient.deleteMessage(SQSExtendedClient.java:149)
at org.nfjs.aws.sqs.SQSExtendedClient.pollForMessages(SQSExtendedClient.java:139)
at org.nfjs.aws.sqs.SQSExtendedClient.receiveMessage(SQSExtendedClient.java:108)
at org.nfjs.aws.sqs.SQSExtendedClient.main(SQSExtendedClient.java:63)
I couldn't exactly figure out the reason for the exception. Am I missing any thing in the above code snippet using java sdk?
Thanks in advance for any suggestions.
