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Using Jython to find an appServer's profile

Posted on 2011-05-09
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Last Modified: 2013-12-10
Given an appServer name and the name of the node that appServer is on, how would I best go about gettnig the profile name that appServer is a part of?

I'm running WebSphere 7.0.x
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Question by:Bbouch
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Author Comment

by:Bbouch
ID: 35726189
a little extra info.

I want to update the classpath of an appServer to include a directory that is under the profile directory. Since our profile directories are different on each server, i need a way to programatically (preferably in jython) determine which profile a given application server is in before updating the classpath
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Expert Comment

by:HonorGod
ID: 35729312
Interesting question.

Unfortunately, there appears to be no "easy" way to determine this programatically from within a Jython script.

I would probably do something like have some kind of input file that identifies the configured nodes and servers for a given profileName, and use this as input to the Jython script.

Does this make sense?
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Expert Comment

by:HonorGod
ID: 35729420
Even using the WebSphere command scripts, we can't list the nodeName and serverName for the servers in a given profile.

For exampe, we can list the configured profiles using:

./manageprofiles.sh -listProfiles

and then list the names of the servers in each of the profiles using:

./serverStatus.sh -all -profileName <profileName>

e.g.,

./serverStatus.sh -all -profileName AppSrv01

But that will only list the names of the servers, not the name of the node.

So, I believe that the simple answer to your question is:

No, this can't be done.

Sorry.
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Author Comment

by:Bbouch
ID: 35729536
It does, Honorgod, but I think I may have found something you could probably help with  that may work...


It looks like the profile directory is stored in the variables.xml file for a given node under the variable name "USER_INSTALL_ROOT"

I believe I should be able to access this WebSphere variable (at the node's scope), but I'm not sure exactly how. I've been poking around this morning and found a script that will get the VariableMap for a cell's scope, but I'm having trouble translating that to my particular node.

The Example code I'm working with is included here:
import sys
def wsadminToList(inStr):
        outList=[]
        if (len(inStr)>0 and inStr[0]=='[' and inStr[-1]==']'):
                tmpList = inStr[1:-1].split(" ")
        else:
                tmpList = inStr.split("\n")  #splits for Windows or Linux
        for item in tmpList:
                item = item.rstrip();        #removes any Windows "\r"
                if (len(item)>0):
                        outList.append(item)
        return outList
#endDef


cell = AdminConfig.list("Cell")
cellName = AdminConfig.showAttribute(cell, "name")
cellWebSphereVariableMap = AdminConfig.getid("/Cell:"+cellName+"/VariableMap:/")
cellEntries = AdminConfig.showAttribute(cellWebSphereVariableMap, "entries")
entryList = wsadminToList(cellEntries)


if (len(cellEntries) != '[]'):
        for cellEntry in entryList:
                varName = AdminConfig.showAttribute(cellEntry, "symbolicName")
                print "var Name is : "+varName
                varVal = AdminConfig.showAttribute(cellEntry, "value")
                print " var value is : "+varVal
        #endFor
#endIf

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I think all I essentially need to do is add something to the line:

cellWebSphereVariableMap = AdminConfig.getid("/Cell:"+cellName+"/VariableMap:/")

Open in new window


but I haven't quite got it nailed down yet.  Any insight would be appreciated.
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Expert Comment

by:HonorGod
ID: 35730555
ooh, we're into WebSphere variables now.

Another interesting topic.  ;-)

The way that I resolve a WebSphere variable into a complete value is a multi-step process that depends upon the scope.

So I use code to:
- build a scope specific variables dictionary
- loop over the string, looking for '${variable}', and looking in the dictionary for "variable" values

Does this help?  Or do you want / need my non-trivial code?
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Expert Comment

by:HonorGod
ID: 35730710
Example interactive use of my code results in the following, so it may we may need to massage the result.

Does that make sense?
wsadmin>for server in AdminConfig.list( 'Server' ).splitlines() :
wsadmin>  print '%10s : %s' % ( AdminConfig.showAttribute( server, 'name' ), WAuJ.unravel( '${USER_INSTALL_ROOT}', server ) )
wsadmin>
   Member1 : /opt/IBM/WebSphere/AppServer70/profiles/AppSrv01
      dmgr : /opt/IBM/WebSphere/AppServer70/profiles/Dmgr01
 nodeagent : /opt/IBM/WebSphere/AppServer70/profiles/AppSrv01
   server1 : /opt/IBM/WebSphere/AppServer70/profiles/AppSrv01

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Accepted Solution

by:
HonorGod earned 2000 total points
ID: 35730797
So, I guess the answer is yes. ;-)

Column 1 == Node Name
Column 2 == Server Name
Column 3 == profileName
wsadmin>for server in AdminConfig.list( 'Server' ).splitlines() :
wsadmin>  cfgDict = WAuJ.configIdAsDict( server )
wsadmin>  profile = WAuJ.unravel( '${USER_INSTALL_ROOT}', server )
wsadmin>  profName =  profile.split( '/' )[ -1 ]
wsadmin>  print '%20s %-10s %s' % ( cfgDict[ 'nodes' ], cfgDict[ 'servers' ], profName )
wsadmin>
       ragdollNode03 Member1    AppSrv01
ragdollCellManager02 dmgr       Dmgr01
       ragdollNode03 nodeagent  AppSrv01
       ragdollNode03 server1    AppSrv01
wsadmin>

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Assisted Solution

by:HonorGod
HonorGod earned 2000 total points
ID: 35730970
ah. instead of:

  profName =  profile.split( '/' )[ -1 ]

we should really use:

import os
...

  profName =  profile.split( os.sep )[ -1 ]
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Author Closing Comment

by:Bbouch
ID: 35774160
Toko me a little while to work through it in my head, but I think I understand this code now :)

Thanks again!
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Expert Comment

by:HonorGod
ID: 35776429
You are very welcome.

Thank you for the grade and points.

Good luck & have a great day.
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