Export current messages from weblogic JMS Queue using WLST

Many a times it is required to export oracle weblogic JMS Messages from weblogic JMS queue to an XML file. One way of achieving this is using Weblogic Console. However doing it using WLST is a little tricky. I am providing a WLST snippet that can export jms messages for into a files. For distributed queue, one file will be created for each server on which it is targeted. So if a distributed queue is targeted on a cluster of two servers and contains messages, then two separate jms files will be created. After exporting all the messages from the queue, this script will delete the messages.

def exportMessages(serverName,server,jms_module,destination,messageSelector):     try:         serverRuntime()         cd('JMSRuntime/' + serverName + '.jms/JMSServers/' + server + '/Destinations/' + jms_module + '!' + server + '@' +  destination)         if cmo.getMessagesCurrentCount() > 0 :             print ("No. of current messages are: ")             print cmo.getMessagesCurrentCount()             msgCursor=cmo.getMessages(messageSelector,1000,1)             amountOfMessages=cmo.getCursorSize(msgCursor)             allDestinationMessages=cmo.getNext(msgCursor,amountOfMessages)             print allDestinationMessages             outf = open (server+'-jmsmessages.xml','w')             outf.write('<?xml version="1.0" encoding="UTF-8"?>' + '\n' + '<JMSMessageExport>' + '\n')             for jmsmessage in allDestinationMessages:                 jmsmsginfo = JMSMessageInfo(jmsmessage)                 wlmsg = jmsmsginfo.getMessage()                 wlmsgid = wlmsg.getJMSMessageID()                 completeMsg = cmo.getMessage(msgCursor,wlmsgid)                 outf.write(completeMsg.get("MessageXMLText") + '\n')             outf.write('</JMSMessageExport>')             outf.close()             cmo.closeCursor(msgCursor)    cmo.deleteMessages(messageSelector)         else:             print ("No current message")     except Exception, e:         print('Exception is ')         print e         dumpStack()         raise

serverName- Managed Server Name

server- JMS Server Name ( Domain_Name --> Messaging --> JMS Servers )

jms_module- JMS Module name ( Domain_Name --> Messaging --> JMS Modules )

destination- Queue Name

messageSelector- Selecting messages based on jms message properties such as JMS Priority etc. 

To modify the script to export pending messages, replace

msgCursor=cmo.getMessages(messageSelector,1000,1)

with

msgCursor=cmo.getMessages(messageSelector,1000,4)

The syntax for getMessages function is:
String getMessages(String selector, Integer timeout, Integer state)
where state is various message states such as 1 for current weblogic jms messages and 4 for pending weblogic jms messages