WebLogic OSGI
Integration
Starting with WebLogic 12.1.2, is it possible to
integrate OSGI frameworks into the WebLogic server. See www.osgi.org
for background information on OSGI.
Applications can get access to these framework
implementations by getting them from the JNDI tree.
The WebLogic integration allows you to configure
multiple instances of OSGI frameworks, and of course deploy multiple
bundles into them. WebLogic provides out of the box the Apache Felix
implementation. Features like deploy bundles, enable log, and
persistence are available.
The following is an example of creating a new
framework instance:
startEdit()
# change to the root => domain mbean
cd('/')
# create a new OSGI Framework wth a given
name
cmo.createOsgiFramework('OsgiFramework-BookTest')
# change to the newly created MBean and
configure it
cd('/OsgiFrameworks/OsgiFramework-BookTest')
set('Targets',jarray.array([ObjectName('com.bea:Name=TestCluster,Type=Cluster')],
ObjectName))
cmo.setInitProperties({testprop=something})
set('Targets',jarray.array([ObjectName('com.bea:Name=MS1,Type=Server'),
ObjectName('com.bea:Name=MS2,Type=Server')], ObjectName))
cmo.setInitProperties({testprop=something})
activate()
Note that we did not create an MBean to deal with
an OSGI bundle. WebLogic does not provide an OSGIRuntime framework
by default. WebLogic offers the capabilities to host a complete OSGI
framework (like Apache-Felix). The framework configuration will then
have the information about which OSGI bundles will be loaded into
this framework. The runtime configuration discussed above will
create and target a complete OSGI framework to the desired server
instances.
The frameworks are managed over the
OsgiFrameWorkMBean MBeans:
wls:/testDomain/serverConfig> cd ('OsgiFrameworks')
wls:/testDomain/serverConfig/OsgiFrameworks>
ls()
dr--
OsgiFramework-BookTest
wls:/testDomain/serverConfig/OsgiFrameworks>
cd ('OsgiFramework-BookTest')
wls:/testDomain/serverConfig/OsgiFrameworks/OsgiFramework-BookTest>
ls()
dr--
Targets
-r--
DeployInstallationBundles
populate
-r--
DeploymentOrder
1000
-r--
DynamicallyCreated
false
-r--
FactoryImplementationClass
org.apache.felix.framework.FrameworkFactory
-r--
Id
0
-r--
InitProperties
{testprop=something}
-r--
Name
OsgiFramework-BookTest
-r--
Notes
null
-r--
OrgOsgiFrameworkBootdelegation
null
-r--
OrgOsgiFrameworkSystemPackagesExtra
null
See the book code download for full
script
-r--
OsgiImplementationLocation
null
-r--
RegisterGlobalDataSources
true
-r--
RegisterGlobalWorkManagers
true
-r--
Type
OsgiFramework
-r-x
freezeCurrentValue
Void : String(attributeName)
-r-x
getInheritedProperties
String[] : String[](propertyNames)
-r-x
isInherited
Boolean : String(propertyName)
-r-x
isSet
Boolean : String(propertyName)
-r-x
unSet
Void : String(propertyName)
Installing OSGI bundles will be done on the
frameworks themselves and not via the WebLogic MBean structure.
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Advanced WebLogic Server
Automation Book
The above is an excerpt from the
book
"Advanced
WebLogic Server Automation: Administration and Monitoring with WLST and
JMX". This book covers everything
administrators need to know for WebLogic scripting and
automation, and includes a comprehensive code download of
powerful WLST and JMX scripts.
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Burleson is the American Team
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