JMS: how can I enqueue a task that have failed? - spring

Question

I'm using spring boot and I have a task which consists on invoking an external API to create a resource. In other words, it's just an API call which take a simple parameter.
Since that call is asynchronous, i need to ENSURE that the resource is created. So if the first call to the api fails, it has to be enqueued in order to retry after X seconds. Once the api call completes successfuly, i have to remove that api call from the queue.
How can i achieve this behaviour? I was looking for using ActiveMQ. Is there any other proposal which could work better with spring boot?

Answer 1

You can use "browse" and "get".
The steps as follows:
Browse data and run your api to create a resource. (data is not
removed just browse it)
Check resource has been created and get a
data from queue using selectors.

Answer 2

you can use schedulerSupport of ActiveMQ, It is enabled by setting the broker schedulerSupport attribute to true :
<broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" dataDirectory="${activemq.data}" schedulerSupport="true">
http://activemq.apache.org/delay-and-schedule-message-delivery.html
package com.example.amq;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ScheduledMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.stereotype.Component;
#Component
public class ProducerScheduledMessage implements CommandLineRunner {
#Autowired
private JmsTemplate jmsTemplate;
#Override
public void run(String... args) throws Exception {
send("LOCAL_Q", "send informations of first api call to do", 0);
boolean stop = false;
do {
try {
final String msg = (String) this.jmsTemplate.receiveAndConvert("LOCAL_Q");
// execute call or verify resources creation
stop = true;
} catch (Exception e) {
// if api call fails, send again to the same destination
// to be
// treated after 5 seconds
send("LOCAL_Q", "resend call api or resources creation verification to do after 5s", 5000);
}
} while (!stop);
}
public void send(String dest, final String msg, final long delay) {
this.jmsTemplate.send(dest, new MessageCreator() {
#Override
public Message createMessage(Session session) throws JMSException {
TextMessage tm = session.createTextMessage(msg);
tm.setLongProperty(ScheduledMessage.AMQ_SCHEDULED_DELAY, delay);
return tm;
}
});
}
}