public static void main(String[] args) {
// Get Credentials
AWSCredentials credentials = Credentials.getCredentials();
// Get SQS client
AmazonSQS sqs = new AmazonSQSClient(credentials);
// Start processing the messages from inbox queue
for (; ; ) {
// Receive messages
System.out.println("Receiving messages from Inbox Queue.\n");
ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(inboxQueueUrl);
List<Message> messages = sqs.receiveMessage(receiveMessageRequest).getMessages();
if (messages.isEmpty()) {
continue;
} else {
for (Message message : messages) {
// temp variable to handle the integers in the message
// MessageAttributeValue a=null;
// MessageAttributeValue b=null;
String a = "";
String b = "";
System.out.println(" Message");
System.out.println(" MessageId: " + message.getMessageId());
System.out.println(" ReceiptHandle: " + message.getReceiptHandle());
System.out.println(" MD5OfBody: " + message.getMD5OfBody());
System.out.println(" Body: " + message.getBody());
String receiptHandle = message.getReceiptHandle();
String[] numbers = message.getBody().split(":");
/*Map<String, MessageAttributeValue> e = message.getMessageAttributes();
//for (Entry<String, MessageAttributeValue> entry: e.entrySet()) {
for(Entry<String, String> entry : message.getAttributes().entrySet()){
System.out.println(" Attribute");
String temp1="firstNumber";
String temp2="secondNumber";
if(temp1.compareTo(entry.getKey())==0){
a=entry.getValue().toString();
}
if(temp2.compareTo(entry.getKey())==0){
b=entry.getValue().toString();
}
System.out.println(" Name: " + entry.getKey());
System.out.println(" Value: " + entry.getValue());
}
*/
// process the numbers
String sum = numbers[0] + "+" + numbers[1];
String diff = numbers[0] + "-" + numbers[1];
System.out.println(sum);
System.out.println(diff);
Map<String, MessageAttributeValue> messageAttributes = new HashMap<>();
messageAttributes.put(
"sum", new MessageAttributeValue().withDataType("String").withStringValue(sum));
messageAttributes.put(
"diff", new MessageAttributeValue().withDataType("String").withStringValue(diff));
SendMessageRequest request = new SendMessageRequest();
request.withMessageBody("A test message body.");
request.withQueueUrl(outboxQueueUrl);
request.withMessageAttributes(messageAttributes);
sqs.sendMessage(request);
// delete the message from inbox queue
sqs.deleteMessage(new DeleteMessageRequest(inboxQueueUrl, receiptHandle));
}
}
System.out.println();
}
}
