The beauty of implementing a maven-plugin is that all attributes of
the plugin are configurable
open struts2-osgi-plugin.jar
edit
.\META-INF\maven\plugin.xml
look for
<bean name="osgi"
type="com.opensymphony.xwork2.config.PackageProvider"
class="org.apache.struts2.osgi.OsgiConfigurationProvider" />
as long as your com.opensymphony.xwork2.config.PackageProvider (felix
provider) implements interfaces
com.opensymphony.xwork2.config.PackageProvider
org.osgi.framework.BundleListener
then substitute in the felix PackageProvider to class attribute at
<bean name="osgi"
type="com.opensymphony.xwork2.config.PackageProvider"
class="org.apache.struts2.osgi.OsgiConfigurationProvider" />
save .\META-INF\maven\plugin.xml
/
close
/
rejar
/
place struts2-osgi-plugin.jar back into lib folder (after saving
original as struts2-osgi-plugin.jar.original)
if you do not redirect the PackageProvider this Struts-osgi-Listener
will be called as seen here from Provider code
org.apache.struts2.osgi.OsgiConfigurationProvider
public class OsgiConfigurationProvider implements PackageProvider,
BundleListener {
private static final Logger LOG =
LoggerFactory.getLogger(OsgiConfigurationProvider.class);
private Configuration configuration;
private ObjectFactory objectFactory;
private OsgiHost osgiHost;
private BundleContext bundleContext;
private BundleAccessor bundleAccessor;
private boolean bundlesChanged = false;
private ServletContext servletContext;
public void init(Configuration configuration) throws
ConfigurationException {
osgiHost = (OsgiHost)
servletContext.getAttribute(StrutsOsgiListener.OSGI_HOST);
bundleContext = osgiHost.getBundleContext();
bundleAccessor.setBundleContext(bundleContext);
bundleAccessor.setOsgiHost(osgiHost);
this.configuration = configuration;
//this class loader interface can be used by other plugins to
lookup resources
//from the bundles. A temporary class loader interface is set
during other configuration
//loading as well
servletContext.setAttribute(ClassLoaderInterface.CLASS_LOADER_INTERFACE,
new BundleClassLoaderInterface());
}
where servletContext Listener is set to
org.apache.struts2.osgi.StrutsOsgiListener
public class StrutsOsgiListener implements ServletContextListener {
public static final String OSGI_HOST = "__struts_osgi_host";
private FelixOsgiHost osgiHost;
public void contextInitialized(ServletContextEvent sce) {
ServletContext servletContext = sce.getServletContext();
osgiHost = new FelixOsgiHost();
servletContext.setAttribute(OSGI_HOST, osgiHost);
try {
osgiHost.init(servletContext);
} catch (Exception e) {
throw new StrutsException("Apache Felix failed to start", e);
}
}
org.apache.struts2.osgi.FelixOsgiHost init will be called
public void init(ServletContext servletContext) {
this.servletContext = servletContext;
startFelix();
}
protected void startFelix() {
//load properties from felix embedded file
Properties configProps = getProperties("default.properties");
// Copy framework properties from the system properties.
Main.copySystemProperties(configProps);
replaceSystemPackages(configProps);
//struts, xwork and felix exported packages
Properties strutsConfigProps =
getProperties("struts-osgi.properties");
addExportedPackages(strutsConfigProps, configProps);
//find bundles and adde em to autostart property
addAutoStartBundles(configProps);
// Bundle cache
String storageDir = System.getProperty("java.io.tmpdir") +
".felix-cache";
configProps.setProperty(Constants.FRAMEWORK_STORAGE, storageDir);
if (LOG.isDebugEnabled())
LOG.debug("Storing bundles at [#0]", storageDir);
String cleanBundleCache =
getServletContextParam("struts.osgi.clearBundleCache", "true");
if ("true".equalsIgnoreCase(cleanBundleCache)) {
if (LOG.isDebugEnabled())
LOG.debug("Clearing bundle cache");
configProps.put(FelixConstants.FRAMEWORK_STORAGE_CLEAN,
FelixConstants.FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT);
}
//other properties
configProps.put(FelixConstants.SERVICE_URLHANDLERS_PROP, "false");
configProps.put(FelixConstants.LOG_LEVEL_PROP,
getServletContextParam("struts.osgi.logLevel", "1"));
configProps.put(FelixConstants.BUNDLE_CLASSPATH, ".");
configProps.put(FelixConstants.FRAMEWORK_BEGINNING_STARTLEVEL,
getServletContextParam("struts.osgi.runLevel", "3"));
try {
List<BundleActivator> list = new ArrayList<BundleActivator>();
list.add(new AutoActivator(configProps));
configProps.put(FelixConstants.SYSTEMBUNDLE_ACTIVATORS_PROP, list);
felix = new Felix(configProps);
felix.start();
if (LOG.isTraceEnabled())
LOG.trace("Apache Felix is running");
}
catch (Exception ex) {
throw new ConfigurationException("Couldn't start Apache
Felix", ex);
}
http://blogs.atlassian.com/2007/07/osgi_plugin_for_struts_2_lesso/
Martin
______________________________________________
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> Date: Tue, 8 Jan 2013 12:04:32 +0200
> From: christina.kasko...@eurodyn.com
> To: user@struts.apache.org
> Subject: Using Struts2 OSGi plugin with GlassFish
>
> Hello.
>
> I am trying to use the Struts2 OSGi plugin and have tried creating a
web
> application containing the struts2-osgi-demo-bundle. All goes well when
> deploying the application on Tomcat, however when I try deploying on
> GlassFish (which has Felix included) I get a number of errors which I
> understand are due to the fact that the plugin starts a new Felix
> instance while another one is already running on GlassFish and that
> certain Felix classes are present more than one times in the classpath
> (one from the Felix jars included in the application as dependencies of
> the plugin and one from the felix.jar already included in GlassFish).
> More details on the actual errors are available in this stackoverflow
> post -
>
http://stackoverflow.com/questions/14200300/using-struts2-osgi-plugin-with-glassfish.
>
> My question is: is there any specific configuration I should make in
> order to use the OSGi plugin in GlassFish (or any other container
> including Felix for that matter)?
>
> Thank you,
> Christina
>
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>
