cle_clock
Home > wikikonf >  was/actions/by kikonf > clsloader







Clsloader

print

Action : was.clsloader   (Category : was, Name : clsloader, By : kikonf)
Complete Name : was.clsloader.by.kikonf
Version : 5.0        License : Modified BSD License

Purpose of the was category :
Easy to customize. This category use in background the wsadmin command in jython mode (through AdminConfig, AdminControl and AdminTask), to drive WebSphere Application Server configuration.
You can use it to manage the whole WebSphere architecture.

Purpose of this clsloader plugin : Change a given Classloader Mode and Policy

The following shows the main Source Code File for the Action : was.clsloader

Toggle lines
##  Copyright (c) 2008, Patrick Germain Placidoux
##  All rights reserved.
##
##  This file is part of Kikonf Public Software.
##
##  Kikonf Public Software is released under the modified BSD License,
##  which should accompany it or any part of it in the file "COPYING".
##  If you do not have this file you can access the license 
##  through the WWW at http://www.kikonf.org/license/bsd/license.txt.
## 
##  Home: http://www.kikonf.org
##  Contact: kikonf@gmx.com




from actions.was.tools import *



class Clsloader(wasAction):
    
    def extract(self, scope_attrs=None, **keywords):
        self_funct='extract'
        self.verbose(scope_attrs)   
        dct={'server': None, 'node': None, 'application': None, 'war': None}
        dct.update(scope_attrs)
        scope_attrs=dct
        scope_id, scope_attrs, scope=self.getScope(scope_attrs=scope_attrs, indent=self.getIndent())
        indent=self.getIndent() + 3*' '
        
        policy=mode=None
        if scope_attrs.has_key('application') and scope_attrs['application']!=None:
            verbose('deployedObject retreiving.', level=self.getVerbose(), ifLevel=4, indent=indent, logFile=self.getLogFile())
            dep=AdminConfig.showAttribute(scope_id, 'deployedObject')
            verbose('DeployedObject listed.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())

            if scope_attrs['war']==None:
                policy=AdminConfig.showAttribute(dep, 'warClassLoaderPolicy')
                verbose('DeployedObject listed.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())

                clloader = AdminConfig.showAttribute(dep, 'classloader')
                verbose('Classloader retreived.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
                mode=AdminConfig.showAttribute(clloader, 'mode')
            else:
                mods = split(AdminConfig.showAttribute(dep, 'modules'))
                uris=[]
                found=False
                for mod in mods:
                    uri=AdminConfig.showAttribute(mod, 'uri')
                    uris.append(uri)
                    if uri==scope_attrs['war']:
                        found=True
                        break
                if not found:raise xception.kikonfActionSystemException(self, self_funct, 'Web Module:' + scope_attrs['war'] + ', of Application:' + scope_attrs['application'] + ' not found ! Found uris are:' + str(uris) + '.')

                # AdminConfig.showAttribute(mod, 'classloaderMode')
                clloader = AdminConfig.showAttribute(mod, 'classloader')
                if clloader==None:
                    xception.kikonfActionInformation(self, self_funct, 'Web Module:' + scope_attrs['war'] + ', of Application:' + scope_attrs['application'] + ' has no specific Class Loader definition.').warn(self.getVerbose())
                    return
                verbose('Classloader retreived.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
                mode=AdminConfig.showAttribute(clloader, 'mode')
        else:
            cps=split(AdminConfig.showAttribute(scope_id, 'components'))            
            for cp in cps:
                if cp.startswith(scope_attrs['server']):
                    verbose('Component retreived.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
                    classpaths=getShowAsDict(AdminConfig.show(cp))
                    policy=classpaths['applicationClassLoadingMode']
                    mode=classpaths['applicationClassLoaderPolicy']


        clsloader_node=self.newTop() #-- because in extract mode, each call returns a new blank top node.
        clsloader_node.setAttrs(mode=mode, policy=policy)
        
        mkNodeScope(clsloader_node, scope_attrs, isUnique=True) #-- creates a scope node.
    
    def inject(self):
        self_funct='inject'
        clsloader_node = self.getTop()        
        clsloader_attrs = clsloader_node.getAttrs()
        scope_id, scope_attrs, scope=self.getScope(parent_node=clsloader_node, indent=self.getIndent()) #-- Retreives scope
        self.verbose(scope_attrs)
        indent=self.getIndent() + 3*' '

        if scope_attrs['application']!=None:
            dep=AdminConfig.showAttribute(scope_id, 'deployedObject')
            verbose('Components retreived.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())

            if scope_attrs['war']==None:
                verbose('warClassLoaderPolicy modifying.', level=self.getVerbose(), ifLevel=4, indent=indent, logFile=self.getLogFile())
                AdminConfig.modify(dep, 'warClassLoaderPolicy', clsloader_attrs.policy)
                verbose('WarClassLoaderPolicy modified.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())

                clloader = AdminConfig.showAttribute(dep, 'classloader')
                verbose('classloader modifying.', level=self.getVerbose(), ifLevel=4, indent=indent, logFile=self.getLogFile())
                AdminConfig.modify(clloader, 'mode', clsloader_attrs.mode)
                verbose('Classloader modified.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
            else:
                mods = split(AdminConfig.showAttribute(dep, 'modules'))
                uris=[]
                found=False
                for mod in mods:
                    uri=AdminConfig.showAttribute(mod, 'uri')
                    uris.append(uri)
                    if AdminConfig.showAttribute(mod, 'uri')==scope_attrs['war']:
                        found=True
                        break
                if not found:raise xception.kikonfActionSystemException(self, self_funct, 'Web Module:' + scope_attrs['war'] + ', of Application:' + scope_attrs['application'] + ' not found ! Found uris are:' + str(uris) + '.')
                
                clloader = AdminConfig.showAttribute(mod, 'classloader')
                if clloader==None:clloader = AdminConfig.create('Classloader', mod, 'libraries', [, ['mode', 'PARENT_LAST']], 'classloader') 
                
                verbose('classloader modifying.', level=self.getVerbose(), ifLevel=4, indent=indent, logFile=self.getLogFile())
                AdminConfig.modify(clloader, [['mode', clsloader_attrs.mode]])
                verbose('Classloader modified.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
        else:
            cps=split(AdminConfig.showAttribute(scope_id, 'components'))                
            for cp in cps:
                if cp.startswith(scope_attrs['server']):
                    verbose('components modifying.', level=self.getVerbose(), ifLevel=4, indent=indent, logFile=self.getLogFile())
                    AdminConfig.modify(cp, [['applicationClassLoadingMode', clsloader_attrs.mode], ['applicationClassLoaderPolicy', clsloader_attrs.policy]])
                    verbose('Components modified.', level=self.getVerbose(), ifLevel=3, indent=indent, logFile=self.getLogFile())
                    
    def verbose(self, scope_attrs):
        scope=str(scope_attrs).replace("'", '')[1:-1]
        
        verbose('JVM ClassLoader at scope:' + scope + '.', level=self.getVerbose(), ifLevel=2, indent=self.getIndent())
							
(Source: <KIKONF_INSTALLATION_DIR>/plugins/actions/was/clsloader/by/kikonf/clsloader.py)


  • Line 1 to 3 say something , say something , say something
  • Line 10 to 17 say something , say something , say something , say something , say something
  • Line 20 to 25 say something



Trademarks :
  • "IBM", "WebSphere", "WebSphere Aplication Server", "WAS" are registred trademarks of International Business Machines Corporation.
  • "Java" and "JVM" are a registred trademarks of Oracle and/or its affiliates.
  • Other names may be trademarks of their respective owners.

Copyright © 2011 - Patrick Placidoux, Hélène Malamoud