Syntax error using try statement in WLST

Question

Hi All,
I have a WLST script to create some JMS resources.
I want to implement exception handling in such a way that if the script fails at any point, all the changes done should be reverted back.
However, whenever I am trying to put a try block, the script is throwing syntax error on the first line after the try statement.
Please find below the script I am using. Please suggest
import sys
from java.lang import System
*# Putting a try statement here results in a syntax error at the below line*
print "Starting the script ..."
connect('weblogic',password,'t3://osbdev:7001')
edit()
startEdit()
servermb=getMBean("Servers/osb_server")
if servermb is None:
print 'Value is Null'
else:
+# Creating the JMS Server+
jmsserver1mb = create('WLSTJMSServer','JMSServer')
jmsserver1mb.addTarget(servermb)
+# Creating the JMS Module+
jmsMySystemResource = create("WLSTJmsSystemResource","JMSSystemResource")
jmsMySystemResource.addTarget(servermb)
subDep1mb = jmsMySystemResource .createSubDeployment('WLSTJMSSubDeployment')
subDep1mb.addTarget(jmsserver1mb)
theJMSResource = jmsMySystemResource.getJMSResource()
connfact1 = theJMSResource.createConnectionFactory('WLSTConnFact1')
connfact1.setJNDIName('jms.WLSTConnFact1')
connfact1.setSubDeploymentName('WLSTJMSSubDeployment')
print "Creating WLSTQueue1..."
jmsqueue1 = theJMSResource.createQueue('WLSTJMSQueue1')
jmsqueue1.setJNDIName('jms.WLSTJMSQueue1')
jmsqueue1.setSubDeploymentName('WLSTJMSSubDeployment')
print "Creating WLSTQueue2..."
jmsqueue2 = theJMSResource.createQueue('WLSTJMSQueue2')
jmsqueue2.setJNDIName('jms.WLSTJMSQueue2')
jmsqueue2.setSubDeploymentName('WLSTJMSSubDeployment')
*# try statement is working at only this point of the program*
try:
save()
activate(block="true")
print "script returns SUCCESS"
except:
save()
cancelEdit(defaultAnswer="y")
print "Error while trying to connect to server !!!"
print "Unexpected error: ", sys.exc_info()[0]
dumpStack()
raise
Edited by: Chintan Parekh on Mar 16, 2011 7:06 AM

Answer 1

Hi Chintan,
Try doing copy pasting the below code, you have to hit the tab or space after try or except to create its block and keep an eye on the alinement's of it.
try:
     save()
     activate(block="true")
     print "script returns SUCCESS"
except:
     save()
     cancelEdit(defaultAnswer="y")
     print "Error while trying to connect to server !!!"
     print "Unexpected error: ", sys.exc_info()[0]
     dumpStack()Also I made the alinement's properly and the script is running properly with out any error.
print "Starting the script ..."
connect('weblogic','weblogic','t3://localhost:7001')
edit()
startEdit()
servermb=getMBean("Servers/AdminServer")
if servermb is None:
     print 'Value is Null'
else:
     # Creating the JMS Server
     jmsserver1mb = create('WLSTJMSServer','JMSServer')
     jmsserver1mb.addTarget(servermb)
     # Creating the JMS Module
     jmsMySystemResource = create("WLSTJmsSystemResource","JMSSystemResource")
     jmsMySystemResource.addTarget(servermb)
     subDep1mb = jmsMySystemResource .createSubDeployment('WLSTJMSSubDeployment')
     subDep1mb.addTarget(jmsserver1mb)
     theJMSResource = jmsMySystemResource.getJMSResource()
     connfact1 = theJMSResource.createConnectionFactory('WLSTConnFact1')
     connfact1.setJNDIName('jms.WLSTConnFact1')
     connfact1.setSubDeploymentName('WLSTJMSSubDeployment')
     print "Creating WLSTQueue1..."
     jmsqueue1 = theJMSResource.createQueue('WLSTJMSQueue1')
     jmsqueue1.setJNDIName('jms.WLSTJMSQueue1')
     jmsqueue1.setSubDeploymentName('WLSTJMSSubDeployment')
     print "Creating WLSTQueue2..."
     jmsqueue2 = theJMSResource.createQueue('WLSTJMSQueue2')
     jmsqueue2.setJNDIName('jms.WLSTJMSQueue2')
     jmsqueue2.setSubDeploymentName('WLSTJMSSubDeployment')
# try statement is working at only this point of the program
try:
     save()
     activate(block="true")
     print "script returns SUCCESS"
except:
     save()
     cancelEdit(defaultAnswer="y")
     print "Error while trying to connect to server !!!"
     print "Unexpected error: ", sys.exc_info()[0]
     dumpStack()Below is the output
java weblogic.WLST test.py
Initializing WebLogic Scripting Tool (WLST) ...
Welcome to WebLogic Server Administration Scripting Shell
Type help() for help on available commands
Starting the script ...
Connecting to t3://localhost:7001 with userid weblogic ...
Successfully connected to Admin Server 'AdminServer' that belongs to domain 'Domain_7001'.
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 edit tree. This is a writable tree with
DomainMBean as the root. To make changes you will need to start
an edit session via startEdit().
For more help, use help(edit)
You already have an edit session in progress and hence WLST will
continue with your edit session.
Starting an edit session ...
Started edit session, please be sure to save and activate your
changes once you are done.
MBean type JMSServer with name WLSTJMSServer has been created successfully.
MBean type JMSSystemResource with name WLSTJmsSystemResource has been created successfully.
Creating WLSTQueue1...
Creating WLSTQueue2...
Saving all your changes ...
Saved all your changes successfully.
Activating all your changes, this may take a while ...
The edit lock associated with this edit session is released
once the activation is completed.
Activation completed
script returns SUCCESSRegards,
Ravish Mody
http://middlewaremagic.com/weblogic
Come, Join Us and Experience The Magic…
Edited by: Ravish Mody-MiddewareMagic on Mar 16, 2011 8:33 PM