/*
* #%L
* Gravia :: Runtime :: Embedded
* %%
* Copyright (C) 2013 - 2014 JBoss by Red Hat
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package org.jboss.gravia.runtime.embedded.spi;
import java.net.URL;
import java.util.Dictionary;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
import org.jboss.gravia.runtime.Module;
import org.jboss.gravia.runtime.ModuleActivator;
import org.jboss.gravia.runtime.ModuleContext;
import org.jboss.gravia.runtime.ModuleException;
import org.jboss.gravia.runtime.Runtime;
import org.jboss.gravia.runtime.spi.ManifestHeadersProvider;
import org.jboss.gravia.runtime.spi.RuntimeLogger;
import org.jboss.gravia.runtime.spi.RuntimePlugin;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.Constants;
/**
* An abstract {@link RuntimePlugin}
*
* @author thomas.diesler@jboss.com
* @since 27-Sep-2013
*/
public abstract class AbstractRuntimePlugin implements RuntimePlugin, ModuleActivator {
private BundleActivator delegate;
public abstract String getBundleActivator();
@Override
public Module installPluginModule(Runtime runtime, ClassLoader classLoader) throws ModuleException {
String resourceName = getBundleActivator().replace('.', '/') + ".class";
URL resurl = classLoader.getResource(resourceName);
if (resurl == null) {
RuntimeLogger.LOGGER.debug("Cannot load BundleActivator resource '{}'", resourceName);
return null;
}
String urlpath = resurl.toExternalForm();
urlpath = urlpath.substring(0, urlpath.indexOf(resourceName));
urlpath = urlpath + JarFile.MANIFEST_NAME;
Manifest manifest;
try {
manifest = new Manifest(new URL(urlpath).openStream());
} catch (Exception ex) {
throw new ModuleException("Cannot load plugin manifest: " + urlpath, ex);
}
Dictionary<String, String> headers = new ManifestHeadersProvider(manifest).getHeaders();
String symbolicName = headers.get(Constants.BUNDLE_SYMBOLICNAME);
String version = headers.get(Constants.BUNDLE_VERSION);
headers.put(org.jboss.gravia.Constants.GRAVIA_IDENTITY_CAPABILITY, symbolicName + ";version=" + version);
headers.put(org.jboss.gravia.Constants.MODULE_ACTIVATOR, getClass().getName());
return runtime.installModule(classLoader, headers);
}
@Override
public void start(ModuleContext context) throws Exception {
delegate = (BundleActivator) context.getModule().loadClass(getBundleActivator()).newInstance();
delegate.start(new BundleContextAdaptor(context));
}
@Override
public void stop(ModuleContext context) throws Exception {
if (delegate != null) {
delegate.stop(new BundleContextAdaptor(context));
}
}
}