This sample shows how to use the zero.timer and zero.kicker modules to monitor a simple queue using the kicker and receiver pattern.



The Post message tab contains a form that posts messages to a queue. You can use the Browse queue tab to review the messages on the queue that have not yet been processed by the receiver.



The zero.config file contains timer tasks that drives SampleKicker every 30 seconds to poll the queue for messages. When the queue contains a message to process, the kicker notifies the receiver using a HTTP POST. The SampleReceiver handles this POST by reading the message from the queue and firing a sampleMessage event, which is handled by sampleMessageHandler.groovy .



The components of this demonstration write messages to standard output at key points. Review the contents of the trace log file to see this information. Read the documentation for this sample application, for more information.

Use this form to post a message to the sample queue. The form POSTs the sampleQueue.groovy script, which sends the message to the queue. When the form is posted, the status message and queue length returned from the script is displayed below.

Use this form to browse the messages that have not yet been processed. The form GETs the messages from the sampleQueue.groovy script and the results are displayed below.