The scripting library provides Jython script procedures
to assist in automating your environment. Use the application management
scripts to install, uninstall, export, start, stop, and manage business-level
applications in your environment.
About this task
The scripting library provides a set of procedures to automate the most common application server administration functions. There are three ways to use the Jython script library.
- Run scripts from the Jython script library in interactive mode with the wsadmin tool. You can launch the wsadmin tool, and run individual scripts that are included in the script library using the following syntax:
wsadmin>AdminServerManagement.createApplicationServer("myNode", "myServer", "default")
- Use a text editor to combine several scripts from the Jython script library, as the following sample displays:
#
# My Custom Jython Script - file.py
#
AdminServerManagement.createApplicationServer("myNode", "Server1", "default")
AdminServerManagement.createApplicationServer("myNode", "Server2", "default")
# Use one of them as the first member of a cluster
AdminClusterManagement.createClusterWithFirstMember("myCluster", "APPLICATION_SERVER",
"myNode", "Server1")
# Add a second member to the cluster
AdminClusterManagement.createClusterMember("myCluster", "myNode", "Server3")
# Install an application
AdminApplication.installAppWithClusterOption("DefaultApplication",
"..\installableApps\DefaultApplication.ear", "myCluster")
# Start all servers and applications on the node
AdminServerManagement.startAllServers("myNode")
Save the custom script and run it from the command line, as the following syntax demonstrates:bin>wsadmin -language jython -f path/to/your/jython/file.py
- Use the Jython scripting library code as sample syntax to write custom scripts. Each script example in the script library demonstrates best practices for writing wsadmin scripts. The script library code is located in the app_server_root/scriptLibraries directory. Within this directory, the scripts are organized into subdirectories according to functionality, and further organized by version. For example, the app_server_root/scriptLibraries/application/V70 subdirectory contains procedures that perform application management tasks that are applicable to Version 7.0 and later of the product.
The
business-level application procedures in scripting library are located
in the
app_server_root/scriptLibraries/application/V70
subdirectory. Each script from the directory automatically loads when
you launch the wsadmin tool. To automatically load your own Jython
scripts (*.py) when the wsadmin tool starts, create a new subdirectory
and save existing automation scripts under the
app_server_root/scriptLibraries
directory.
Best practice: To create custom scripts using
the scripting library procedures, save the modified scripts to a new
subdirectory to avoid overwriting the library. Do not edit the script
procedures in the scripting library.
bprac
You can use the
AdminBLA.py scripts to perform multiple combinations of administration
functions. This topic provides one sample combination of procedures.
See the business-level application configuration scripts documentation
to view argument descriptions and syntax examples.
Use this
topic and the scripting library to create an empty business-level
application, add assets as composition units, and start the business-level
application.
Procedure
- Launch the wsadmin tool.
Use this step to
launch the wsadmin tool and connect to a server, or run the tool in
local mode. If you launch the wsadmin tool, use the interactive mode
examples in this topic to run scripts.
When the wsadmin tool launches, the system
loads all scripts from the scripting library.
- Import assets to your configuration.
Assets
represent application binaries that contain business logic that runs
on the target run time environment and serves client requests. An
asset can contain a file, an archive of files such as a ZIP or Java archive (JAR) file, or an archive of archive
files such as a Java Platform, Enterprise Edition
(Java EE) EAR file. Other examples of assets include Enterprise JavaBeans
(EJB) JAR files, EAR files, Service Component Architecture (SCA) composite
JAR files, OSGi bundles, mediation JAR files, shared library JAR files,
and non-Java EE contents such as PHP applications.
Run
the importAsset script from the AdminBLA script library to import
assets to the application server configuration repository, as the
following example demonstrates:
bin>wsadmin -lang jython -c "AdminBLA.importAsset("asset.zip", "true", "true")"
You
can also use interactive mode to run the script procedure, as the
following example demonstrates:
wsadmin>AdminBLA.importAsset("asset.zip", "true", "true")
- Create an empty business-level application.
Run
the createEmptyBLA script from the AdminBLA script library to create
a new business-level application, as the following example demonstrates:
bin>wsadmin -lang jython -c "AdminBLA.createEmptyBLA("myBLA", "bla to control transactions")"
You can also use interactive mode to run the script
procedure, as the following example demonstrates:
wsadmin>AdminBLA.createEmptyBLA("myBLA", "bla to control transactions")
- Add the assets, as composition units, to the business-level
application.
Composition units can represent deployed
assets, other business-level applications, or external artifacts that
are deployed on non-WebSphere® Application Server runtime
environments without backing assets. Business-level applications contain
zero or more composition units. You cannot add the same composition
unit to more than one business-level application, but you can use
one asset to create more than one composition unit.
Run the
addCompUnit script from the AdminBLA script library to add asset.zip
to myBLA as a composition unit, as the following example demonstrates:
bin>wsadmin -lang jython -c "AdminBLA.addCompUnit("myBLA", "asset.zip", "default",
"myCompositionUnit", "cu description", "1", "server1", "specname=actplan1")"
You
can also use interactive mode to run the script procedure, as the
following example demonstrates:
wsadmin>AdminBLA.addCompUnit("myBLA", "asset.zip", "default", "myCompositionUnit",
"cu description", "1", "server1", "specname=actplan1")
- Save the configuration changes.
Use the following command example to save your configuration changes:
AdminConfig.save()
- Start the business-level application.
Use
the startBLA script from the AdminBLA script library to start each
composition unit of the business-level application on the deployment
targets for which the composition units are configured, as the following
example demonstrates:
wsadmin>AdminBLA.startBLA("myBLA")
Results
The business-level application is configured and started
on the deployment target of interest.
The wsadmin script libraries
return the same output as the associated wsadmin commands. For example,
the AdminServerManagement.listServers() script returns a list of available
servers. The AdminClusterManagement.checkIfClusterExists() script
returns a value of true if the cluster exists, or false if
the cluster does not exist. If the command does not return the expected
output, the script libraries return a 1 value when the script successfully
runs. If the script fails, the script libraries return a -1 value
and an error message with the exception.
By default, the system
disables failonerror option. To enable this option, specify
true as
the last argument for the script procedure, as the following example
displays:
wsadmin>AdminApplication.startApplicationOnCluster("myApplication","myCluster","true")
What to do next
Use the business-level application configuration scripts
to create custom scripts to automate your environment. Save custom
scripts to a new subdirectory of the app_server_root/scriptLibraries
directory.