Configure a shared library for an application using scripting

This task uses the AdminConfig object to configure a shared library for an application. Before starting this task, the wsadmin tool must be running. See the Starting the wsadmin scripting client article for more information.

Overview

You can use the AdminApp object to set certain configurations in the application.

Procedure

1. Identify the shared library and assign it to the library variable. You can either use an existing shared library or create a new one...

   • To create a new shared library, perform the following steps:

     1. Idenitfy the node and assign it to a variable...

        • Using Jacl:

          set n1 [$AdminConfig getid /Cell:mycell/Node:mynode/]

        • Using Jython:

          n1 = AdminConfig.getid('/Cell:mycell/Node:mynode/')
          print n1

        where:

        set	is a Jacl command
        n1	is a variable name
        $	is a Jacl operator for substituting a variable name with its value
        AdminConfig	is an object representing the WebSphere Application Server configuration
        getid	is an AdminConfig command
        Cell	is the object type
        mycell	is the name of the object that will be modified
        Node	is the object type
        mynode	is the name of the object that will be modified

        Example output:

        mynode(cells/mycell/nodes/mynode|node.xml#Node_1)

     2. Create the shared library in the node. The following example creates a new shared library in the node scope. You can modify it to use the cell or server scope.

        Using Jacl:

        Using Jython:

        where:

        set	is a Jacl command
        library	is a variable name
        $	is a Jacl operator for substituting a variable name with its value
        AdminConfig	is an object representing the WebSphere Application Server configuration
        create	is an AdminConfig command
        Library	is an AdminConfig object
        n1	evaluates to the ID of host node specified in step number 1
        name	is an attribute
        mySharedLibrary	is the value of the name attribute
        classPath	is an attribute
        /mySharedLibraryClasspath	is the value of the classPath attribute

        Example output:

        MySharedLibrary(cells/mycell/nodes/mynode|libraries.xml#Library_1)

   • To use an existing shared library,...

     • Using Jacl:

       set library [$AdminConfig getid /Library:mySharedLibrary/]

     • Using Jython:

       library = AdminConfig.getid('/Library:mySharedLibrary/')
       print library

     where:

     set	is a Jacl command
     library	is a variable name
     $	is a Jacl operator for substituting a variable name with its value
     AdminConfig	is an object representing the WebSphere Application Server configuration
     getid	is an AdminConfig command
     Library	is an attribute
     mySharedLibrary	is the value of the Library attribute

     Example output:

     MySharedLibrary(cells/mycell/nodes/mynode|libraries.xml#Library_1)

2. Identify the deployment configuration object for the application and assign it to the deployment variable. For example:

   • Using Jacl:

     set deployment [$AdminConfig getid /Deployment:myApp/]

   • Using Jython:

     deployment = AdminConfig.getid('/Deployment:myApp/')
     print deployment

   where:

   set	is a Jacl command
   deployment	is a variable name
   $	is a Jacl operator for substituting a variable name with its value
   AdminConfig	is an object representing the WebSphere Application Server configuration
   getid	is an AdminConfig command
   Deployment	is an attribute
   myApp	is the value of the Deployment attribute
   print	is a Jython command

   Example output:

   myApp(cells/mycell/applications/myApp.ear/deployments/myApp|deployment.xml#Deployment_1)

3. Retrieve the application deployment and assign it to the appDeploy variable. For example:

   • Using Jacl:

     set appDeploy [$AdminConfig showAttribute $deployment deployedObject]

   • Using Jython:

     appDeploy = AdminConfig.showAttribute(deployment, 'deployedObject')
     print appDeploy

   where:

   set	is a Jacl command
   appDeploy	is a variable name
   $	is a Jacl operator for substituting a variable name with its value
   AdminConfig	is an object representing the WebSphere Application Server configuration
   showAttribute	is an AdminConfig command
   deployment	evaluates the ID of the deployment configuration object specified in step number 2
   deployedObject	is an attribute of modify objects
   print	is a Jython command

   Example output:

   (cells/mycell/applications/myApp.ear/deployments/
   myApp|deployment.xml#ApplicationDeployment_1)

4. Identify the class loader in the application deployment and assign it to the classLoader variable. For example:

   • Using Jacl:

     set classLoad1 [$AdminConfig showAttribute $appDeploy classloader]

   • Using Jython:

     classLoad1 = AdminConfig.showAttribute(appDeploy, 'classloader')
     print classLoad1

   where:

   set	is a Jacl command
   classLoad1	is a variable name
   $	is a Jacl operator for substituting a variable name with its value
   AdminConfig	is an object representing the WebSphere Application Server configuration
   showAttribute	is an AdminConfig command
   appDeploy	evaluates the ID of the application deployment specified in step number 3
   classLoader	is an attribute of modify objects
   print	is a Jython command

   Example output:

   (cells/mycell/applications/myApp.ear/deployments/myApp|deployment.xml#Classloader_1)

5. Associate the shared library in the application through the class loader. For example:

   • Using Jacl:

     $AdminConfig create LibraryRef $classLoad1 {{libraryName 
     MyshareLibrary} {sharedClassloader true}}

   • Using Jython:

     print AdminConfig.create('LibraryRef', classLoad1, [['libraryName', 
     'MyshareLibrary'],  ['sharedClassloader', 'true']])

   where:

   $	is a Jacl operator for substituting a variable name with its value
   AdminConfig	is an object representing the WebSphere Application Server configuration
   create	is an AdminConfig command
   LibraryRef	is an AdminConfig object
   classLoad1	evaluates to the ID of class loader specified in step number 4
   libraryName	is an attribute
   MyshareLibrary	is the value of the libraryName attribute
   sharedClassloader	is an attribute
   true	is the value of the sharedClassloader attribute

   Example output:

   (cells/mycell/applications/myApp.ear/deployments/myApp|deployment.xml#LibraryRef_1)

6. Save the configuration changes. See the Saving configuration changes with the wsadmin tool article for more information.

7. In a network deployment environment only, synchronize the node. See the Synchronizing nodes with the wsadmin tool article for more information.

Related Reference