WAS v8.5 > Script the application serving environment (wsadmin) > Welcome to scripting for Messaging resources > Configure messaging with wsadmin scripting

Configure the message listener service using scripting

Use scripting to configure the message listener service.

Before starting this task, wsadmin must be running. To configure the message listener service for an application server:

In the following examples, code blocks beginning with wsadmin> show code that is entered by the user. Lines that do not begin with wsadmin> show code that has been returned by the console.

1. Identify the application server and assign it a variable. For this example the variable is named server.
   • Jacl:
     wsadmin>set server [$AdminConfig getid /Cell:mycell/Node:mynode/Server:server1/]
   • Using Jython:

     wsadmin>server = AdminConfig.getid("/Server:server1/")
     wsadmin>print server

   Example output:

   server1(cells/mycell/nodes/mynode/servers/server1|server.xml#Server_1183122130078)
2. Idenify the message listener service for the server and assign it to a variable. In this example the variable is named mls.
   • Jacl:
     wsadmin>set mls [$AdminConfig list MessageListenerService $server]
   • Using Jython:

     wsadmin>mls = AdminConfig.list('MessageListenerService', server)
     wsadmin>print mls

   Example output:

   (cells/mycell/nodes/mynode/servers/server1|server.xml#MessageListenerService_1183122130078)

3. Modify various attributes with one of the following examples:

   • This example command changes the attributes of the thread pool for the message listener service:

     • Jacl:

       wsadmin>$AdminConfig modify $mls {{threadPool {{inactivityTimeout 4000} 
       {isGrowable true} {maximumSize 100} {minimumSize 25}}}}

     • Using Jython:

       wsadmin>AdminConfig.modify(mls, [['threadPool', [['inactivityTimeout', 4000], 
       ['isGrowable',  'true'], ['maximumSize', 100], ['minimumSize', 25]]]])

   • Creating a listener port using the server and mls variables to provide information about the server and the message listener service:

     • Jacl:

       wsadmin>set new [$AdminConfig create ListenerPort $mls {{name my} 
       {destinationJNDIName di} {connectionFactoryJNDIName jndi/fs}}]
       wsadmin>$AdminConfig create StateManageable $new {{initialState START}}

     • Using Jython:

       wsadmin>new = AdminConfig.create('ListenerPort',mls,[['name','myLP']
       ,['destinationJNDIName','jms/myqueue'],['connectionFactoryJNDIName','jms/myCF']])
       wsadmin>print new

     Example output:

     myLP(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318513831827)

   • Assign a variable to the 'State Manageable' property on the listener port and use it to change the initialState property on the listener port. In this example the variable is named sm.

     • Using Jython:

       wsadmin>sm = AdminConfig.list('StateManageable',new)
       wsadmin>print sm

     • Example output:
       (cells/mycell/nodes/mynode/servers/server1|server.xml#StateManageable_1318513831827)
     • Using Jython:
       wsadmin>AdminConfig.modify(sm,[['initialState','START']])

   • Modifying a property on the first listener port on the message listener service, using jython.

     • Return a list of the listener ports on the message listener service:

       wsadmin>lports = AdminConfig.showAttribute(mls,'listenerPorts')
       wsadmin>print lports

       A list of the listener ports on the message listener service is returned in a string:

       myLP(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318504021702) 
       myLP1(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318504495
       733) myLP2(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318513831827)]

     • Remove the first and last character of each listener port in the list string, so that wsadmin can use the returned information:

       wsadmin>clp = lports[1:len(lports)-1]
       wsadmin>print clp

       The result is returned:

       myLP(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318504021702) 
       myLP1(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_13185044957
       33) myLP2(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318513831827)

     • Select the first listener port in the list:

       wsadmin>lport =clp.split(" ")[0]
       wsadmin>print lport

       Result:

       myLP(cells/mycell/nodes/mynode/servers/server1|server.xml#ListenerPort_1318504021702)
     • Alter a property on the listener port. In this example the maxRetries property has been altered:
       wsadmin>AdminConfig.modify(lport, [['maxRetries', 2]])

   • Modifying a property on the first listener port on the message listener service, using jacl:

     wsadmin>set lports [$AdminConfig showAttribute $mls listenerPorts]
     wsadmin>set lport [lindex $lports 0]
     wsadmin>$AdminConfig modify $lport {{maxRetries 2}}

4. Save the configuration changes.

Related

Use the wsadmin scripting AdminConfig object for scripted administration
Start the wsadmin scripting client using wsadmin.sh
Save configuration changes with wsadmin

Reference:

Commands for the AdminConfig object using wsadmin.sh

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