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Do you know this fun thing about Python scripting sing a poem of quotations just by by importing 'this' module.

wls:/offline> import this
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!
wls:/offline>

wlst

More PowerPoint presentations from Shailaja Gadagoju

Content

1. Overview of WLST
2. Input and Output in WLST
3. WLST Online vs Offline
4. Best WLST Editor: OEPE
5. WLST Errors and Exceptions
6. Switching from edit tree
7. WLST starting issues
8. NodeManager with WLST
9. Command line options for WLST
10. Configuring a WL Domain
11. Configuring Multidatasource by WLST
12. Configuring a Generic datasource
13. Configuring GridLink Datasource
14. Configuring WorkManagers with WLST
15. WebLogic domain migration with WLST
16. Monitoring JVM using WLST
17. WLST Tips & Tricks
18. Monitoring Thread Pool
19. Monitoring JMS using WLST
20. Monitoring Multidatasource/connection pool
21. Monitoring Connection pool with admhome
22. ServerState Mail with WLST
23. Side by Side Deployment with WLST
24. 24X7 Restart strategy with WLST
25. Server state by WLST
26. Server start-time using WLST
27. Store output using WLST Files
28. Cosmotizing your WLST output
29. WebLogic 8.1 model thread count
30. 
    

You are invited for the contribution of WLST scripts and articles.

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Configuring Multi DataSource

Introducing Problem Statement for this post is WLST which enables us to configure any kind of resource on a WebLogic domain. Here I am with new attempt to configuring Multi Datasource. In most of new domain configurations you need to work separately for configuring Datasource. We are already seen how to configure a Dynamic Datasource with customized property file, Adding to the same topic now we are going to work on Multi Datasource configuration.

The steps involved in multi datasource confiuration are as follows:
1. Configure individual datasource
2. Configure a new multidatasource
3. Add the datasources created in steip 1

Keeping more flavor (Object-Orientation) to your script we will create a Class in WLST this time. Are you ready??? I know you guys very intelligents and know all WLST tricks how they works and all!! Lets dive into the process of configuration.
-->

#==========================================
# File name: ConfigMDS.py
# Please change the code (line 38) as per your environment and needs
# Author : Inteligent WLA :)
#=============================================

class MDS:          
 def __init__(self, nam):
  self.nam  = nam 

 def configMDS(self):
  n=self.nam
  try:
   cd('/')
   cmo.createJDBCSystemResource(n)
   cd('/JDBCSystemResources/'+n+'/JDBCResource/'+n)
   cmo.setName(n)
   cd('JDBCDataSourceParams/'+n)
   set('JNDINames',jarray.array([String(n)], String))
 
   cmo.setAlgorithmType('Failover')
   dslist=raw_input('Please enter comma separating Datasources for MDS:')
   cmo.setDataSourceList(dslist)
   cd('/JDBCSystemResources/'+n)
   targetType=raw_input('Target to (C)luster or (S)erver: ')
   if targetType in ('C','c') :
           clstrNam=raw_input('Cluster Name: ')
               set('Targets',jarray.array([ObjectName('com.bea:Name='+clstrNam+',Type=Cluster')], ObjectName))
          else:
               servr=raw_input('Server Name: ')
               set('Targets',jarray.array([ObjectName('com.bea:Name='+servr+',Type=Server')], ObjectName))
   print 'Succesfully configured MultiDataSource...'
   activation()
  except BeanAlreadyExistsException:
   print 'Error: '+n+' BeanAlreadyExists...'
       cancelEdit('y')
   exit()

#===== main program===============
if __name__== "main":
 connect('wlusr','paswd','t3://AdminUrl:AdminPort')
 edit()
 startEdit()
 
 mdsName = raw_input("Please enter MultiDataSource name: ")
  # create object, call configMDS
 MDS(mdsName).configMDS()
 print('Exiting...')
 exit() 

Here you can templatise more by creating the a properties file where you need to store Multidatasoruce name, JNDIName, WebLogic Admin user, Password, AdminURL, the datasource names you wish to add to the multidatasource.

Use the same steps as followed in the Generic Data Source Creation.

# http://unni-at-work.blogspot.com/2009/03/multi-data-source-using-wlst.html
# http://edocs.bea.com/wls/docs100/wlsmbeanref/mbeans/JDBCDataSourceParamsBean.html#AlgorithmType