Ravish Mody

Two days back one of our subscribers Pavan had asked us by using comment , that is it possible to move the messages from one queue to another queue that to using WLST and the answer to that question is YES. It is possible to do the same using WLST and we have created the WLST script.

This is a very simple script which would just collect the target/destination queue where the messages has to be moved to (i.e. new.queue.name) and then would just go to the queue where the messages has to be moved from(i.e. old.queue.name). All this can be done using the same script just give the domain and there servers details in the domain.properties files and you are good to go.

Steps to Move Messages From One Queue To Another Queue Using WLST

Step1). Create a Directory somewhere in your file system like : “C:\WLST\Move_Messages”

Step2). Write a Properties filedomain.properties inside “C:\WLST\Move_Messages” like following:

server.url=t3://localhost:8001
username=weblogic
password=weblogic

system.module.name=MySystemModule

old.server.name=AdminServer
old.jms.server.name=Admin_JMSServer
old.queue.name=Admin_Queue

new.tragated.server.name=AdminServer
new.jms.server.name=MyJMSServer
new.queue.name=MyTestQueue

Step2). Now in the same directory write the following WLST Script “move_messages.py” like following:

#############################################################################
#
# @author Copyright (c) 2010 - 2011 by Middleware Magic, All Rights Reserved.
#
#############################################################################
from java.io import FileInputStream
import java.lang
import os
import string

propInputStream = FileInputStream("domain.properties")
configProps = Properties()
configProps.load(propInputStream)

serverUrl = configProps.get("server.url")
Username = configProps.get("username")
Password = configProps.get("password")

systemModuleName = configProps.get("system.module.name")

oldServerName = configProps.get("old.server.name")
oldJmsServerName = configProps.get("old.jms.server.name")
oldQueueName = configProps.get("old.queue.name")

newTragatedServerName = configProps.get("new.tragated.server.name")
newJmsServerName = configProps.get("new.jms.server.name")
newQueueName = configProps.get("new.queue.name")

connect(Username,Password,serverUrl)

serverRuntime()

print 'Getting the traget...'
cd('/JMSRuntime/'+newTragatedServerName+'.jms/JMSServers/'+newJmsServerName+'/Destinations/'+systemModuleName +'!'+ newQueueName)
target = cmo.getDestinationInfo()
print 'Got the traget...'

cd('/JMSRuntime/'+oldServerName+'.jms/JMSServers/'+oldJmsServerName+'/Destinations/'+systemModuleName +'!'+ oldQueueName)

print 'Moving the messages to the new traget...'
cmo.moveMessages('',target)
print 'Messages have been moved to the traget Successfully !!!'

print '======================================='
print 'Messages from queue: "'+oldQueueName+'" have been moved to the new queue: "'+newQueueName+'" Successfully !!!'
print '======================================='

Step3). Now Open a Command/Shell Prompt and then run the “setWLSEnv.sh” script to set the CLASSPATH and PATH environment variables. Run the “. ./setWLSEnv.sh” by adding two DOTs separated by a single space …..before the actual script like following : (use ‘cd’ command to move inside the <BEA_HOME>/wlserver_10.3/server/bin) then run the following command….
. ./setWLSEnv.sh

Note: Here The first DOT represents that set the Environment in the current Shell, AND the second ./ represents execute the script from the current directory.

Step4). Run the Above WLST Script like following:

java weblogic.WLST move_messages.py

Following would be the Output

java weblogic.WLST move_messages.py

Initializing WebLogic Scripting Tool (WLST) ...

Welcome to WebLogic Server Administration Scripting Shell

Type help() for help on available commands

Connecting to t3://localhost:8001 with userid weblogic ...
Successfully connected to Admin Server 'AdminServer' that belongs to domain 'Domain_8001'.

Warning: An insecure protocol was used to connect to the
server. To ensure on-the-wire security, the SSL port or
Admin port should be used instead.

Location changed to serverRuntime tree. This is a read-only tree with ServerRuntimeMBean as the root.
For more help, use help(serverRuntime)

Getting the traget...
Got the traget...
Moving the messages to the new traget...
Messages have been moved to the traget Successfully !!!
=======================================
Messages from queue: "Admin_Queue" have been moved to the new queue: "MyTestQueue" Successfully !!!
=======================================

Note:

Only for Pava you would have to do the following changes
- Instead for line number – 34
cd('/JMSRuntime/'+oldServerName+'.jms/JMSServers/'+oldJmsServerName+'/Destinations/'+systemModuleName +'!'+newJmsServerName+'@'+ newQueueName)
- Instead for line number - 38
cd('/JMSRuntime/'+oldServerName+'.jms/JMSServers/'+oldJmsServerName+'/Destinations/'+systemModuleName +'!'+oldJmsServerName+'@'+ oldQueueName)

Regards, Ravish Mody