I have a ear file and it references few jar files at runtime. We created a shared library using websphere admin console. But for referencing the shared library we are looking for a way to configure the shared library using deployment descriptors. Any help on how to do it, which deployment descriptor file to modify to specify the shared lib?
Thanks,
The short answer is by using the websphere-specific deployment.xml descriptor inside EARs META-INF.
You should put that file inside the following dir tree META-INF/ibmconfig/cells/defaultCell/applications/defaultApp/deployments/defaultApp/deployment.xml, then locate the classloader section and set the shared library inside classloader tag as follows:
<classloader xmi:id="Classloader_1454339476980" mode="PARENT_FIRST">
<libraries libraryName="myshared lib" sharedClassloader="true"/>
</classloader>
In my opinion, the easiest is to use Installed Optional Packages.
Related
i have a spring mvc web application that I need to change the class loader on. I need to change the class loader to be equal to PARENT_LAST. I am using WAS 6.1 and already have a jacl script from a previous web application I can copy to do the job.
In the last application Apache ant was used and what they did was to make the deploy dependent on running the jacl script.
In my new web application I am using maven install to create a war file and am deploying that war file to my application server.
How can I set the class loader to be PARENT_LAST using maven? I know how to do it in the console but if there was a way to do it using scripting that would be nice.
Also will this setting be placed somewhere in the war file so that on deploy of the application the setting will be picked up. This question comes from my lack of understanding of how jacl scripts work?
thanks
If you are only deploying the WAR file itself you can't control this, but if you have your WAR file in an EAR file you can use the deployment.xml solution. The deployment.xml file would look something like this:
<?xml version="1.0" encoding="UTF-8"?>
<appdeployment:Deployment xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:appdeployment="http://www.ibm.com/websphere/appserver/schemas/5.0/appdeployment.xmi" xmi:id="Deployment_1347529484613">
<deployedObject xmi:type="appdeployment:ApplicationDeployment" xmi:id="ApplicationDeployment_1347544766353" startingWeight="99" warClassLoaderPolicy="SINGLE">
<modules xmi:type="appdeployment:WebModuleDeployment" xmi:id="WebModuleDeployment_1347543866613" startingWeight="1" uri="YourWebApp.war" classloaderMode="PARENT_LAST"/>
<classloader xmi:id="Classloader_1347543866613" mode="PARENT_LAST"/>
</deployedObject>
</appdeployment:Deployment>
Once you are done all you need to do is to add the file in the correct location of your EAR project build assuming you are using src/main/application that would be src/main/application/META-INF/ibmconfig/cells/defaultCell/applications/defaultApp/deployments/defaultApp/deployment.xml and build the EAR using Maven as normal.
During server deployment this will be picked up by WAS.
AFAIK there is no way to preconfigure WAR for PARENT_LAST during assembly. Classloading policy is specified during deployment, thus the way of setting it depends on how application is deployed.
Changing the policy using the script is straightforward. Scripts are run using wsadmin tool. The Jython snippet below does the job. It can easily be converted to Jacl.
dep = AdminConfig.getid('/Deployment:app_name/')
depObject = AdminConfig.showAttribute(dep, 'deployedObject')
classldr = AdminConfig.showAttribute(depObject, 'classloader')
AdminConfig.modify(classldr, [['mode', 'PARENT_LAST']])
AdminConfig.save()
Websphere uses deployment.xml file to govern deployment setting of each module in an ear file. You can change the classloader setting in deployment.xml at the following path:
/MyTestEAR/META-INF/ibmconfig/cells/defaultCell/applications/defaultApp/deployments/defaultApp/deployment.xml
I do not know how you can configure that in Maven.
We are using the assembly plugin to build a zip package.
I would like to execute some custom java code during the execution of the Maven Assembly plugin. The java app should have access to the structure of the assembly but before the zip file is built. So, files which should go into the zip might possibly be modified/added/removed.
How would I configure that?
Cheers
Jonas
I do not think executing Java code is possible. Try getting along with exclusion patterns for file removal and maven filters for file modifications.
http://maven.apache.org/plugins/maven-assembly-plugin/advanced-descriptor-topics.html
I have an application which uses Equinox as an osgi framework for a while now. Until now I used the system property osgi.install.area to specify where my bundles are like so
${osgi.install.area}/
plugins/
org.eclipse.osgi_3.7.0.v20110613.jar
... my app bundles
Equinox then automatically uses ${osgi.install.area}/configuration as the configuration area.
Everything works fine.
Now I need to move the configuration area out of ${osgi.install.area} because that may be read-only and I thought it was as simple as setting ${osgi.configuration.area} to a suitable path but when I do this the application no longer starts and I have the following stack trace in the logs:
java.lang.IllegalStateException: Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:74)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at org.eclipse.core.runtime.adaptor.EclipseStarter.main(EclipseStarter.java:150)
...
The path is used because at that location the log file is created and a directory "org.eclipse.osgi".
Paths to bundles are referenced in my config.ini like so:
osgi.bundles=de.mycomp.app-0.6.0.20121116-1834.jar#start, ...
The error message does not really give a hint where to look. It must be something rather simple but I am rather clueless at the moment.
Thanks in advance,
Robert
I tested changing the configuration area an existing osgi app and it worked, with the following argument below in the .ini file in the root of the install. Are you sure you are setting the config param correctly like this:
-Dosgi.configuration.area=c:\mytest
After doing that and running the app again, it created the folder and a new configuration.
Here is a copy of my .ini file that works, also it's important that osgi params come after and vm args.
-loglevel=trace
-vmargs
-Dosgi.configuration.area=c:\mytest
-Dorg.osgi.service.http.port=8094
-Declipse.ignoreApp=true
-Dosgi.noShutdown=true
-Dequinox.ds.print=true
For my OSGi development i have setup a target definition (.target file) which references two directories. Eclipse picks up all the jar files inside these directories and adds them to the target platform. But one of the bundles i have is a WAR file (.war extension) which is run using pax-web. Eclipse doesn't show this in the list of bundles available. Is there any way to add a particular bundle directly into the target definition? Any way out that i might be missing?
One workaround i found was to rename the .war file to .jar. Pax-web doesn't care about the extension, eclipse picks it up and so everything runs fine. But i am not very convinced if this is the right solution.
Thanks.
Bug 355890 was fixed for 3.8/4.2. You can now include archive files that are not jars (i.e. WAR files).
There is a known bug filed on eclipse on this very issue. Until it is fixed, the only workaround is to rename the file to have the .jar extension.
https://bugs.eclipse.org/bugs/show_bug.cgi?id=355890
I want to create share library in Websphere Application Server. I have abc.jar inside abc folder. I want to know the difference between specifying c:\abc Vs c:\abc\abc.jar in the classpath
If c:\abc contains other jars, they will also be added to the classpath. If c:\abc contains non-jar files (e.g., c:\abc\test.properties), then c:\abc will be added to the classpath itself, which allows getResource calls for the directory to work (e.g., ClassLoader.getResource("test.properties") will find the file).