/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
**/
package org.apache.geronimo.jasper;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.zip.ZipEntry;
import org.apache.geronimo.gbean.GBeanLifecycle;
import org.apache.geronimo.gbean.annotation.GBean;
import org.apache.geronimo.gbean.annotation.ParamAttribute;
import org.apache.geronimo.gbean.annotation.ParamSpecial;
import org.apache.geronimo.gbean.annotation.SpecialAttributeType;
import org.apache.xbean.osgi.bundle.util.BundleResourceFinder;
import org.apache.xbean.osgi.bundle.util.BundleResourceFinder.ResourceFinderCallback;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.ExportedPackage;
import org.osgi.service.packageadmin.PackageAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@GBean
public class TldRegistration implements GBeanLifecycle {
private static final Logger LOGGER = LoggerFactory.getLogger(TldRegistration.class);
private Bundle bundle;
private String packageNameList;
public TldRegistration(@ParamSpecial(type = SpecialAttributeType.bundle) Bundle bundle,
@ParamAttribute(name = "packageNameList") String packageNameList) throws Exception {
this.bundle = bundle;
this.packageNameList = packageNameList;
}
public void doStart() throws Exception {
ServiceReference reference = bundle.getBundleContext().getServiceReference(PackageAdmin.class.getName());
PackageAdmin packageAdmin = (PackageAdmin) bundle.getBundleContext().getService(reference);
try {
registerTlds(packageAdmin);
} finally {
bundle.getBundleContext().ungetService(reference);
}
}
private void registerTlds(PackageAdmin packageAdmin) throws Exception {
String[] packageNames = packageNameList.split(",");
for (String packageName : packageNames) {
ExportedPackage exportedPackage = packageAdmin.getExportedPackage(packageName.trim());
if (exportedPackage == null) {
LOGGER.warn("Package {} is not currently exported by any bundle", packageName);
} else {
Bundle exportingBundle = exportedPackage.getExportingBundle();
BundleResourceFinder resourceFinder = new BundleResourceFinder(packageAdmin, exportingBundle, "META-INF/", ".tld");
TldResourceFinderCallback callback = new TldResourceFinderCallback();
resourceFinder.find(callback);
if (!callback.getTlds().isEmpty()) {
exportingBundle.getBundleContext().registerService(TldProvider.class.getName(), callback, null);
}
}
}
}
public void doFail() {
}
public void doStop() throws Exception {
}
private class TldResourceFinderCallback implements ResourceFinderCallback, TldProvider {
private List<TldProvider.TldEntry> tlds;
private TldResourceFinderCallback() {
tlds = new ArrayList<TldProvider.TldEntry>();
}
public Collection<TldProvider.TldEntry> getTlds() {
return tlds;
}
public void foundInDirectory(Bundle bundle, String basePath, URL url) throws Exception {
LOGGER.debug("Found {} TLD in bundle {}", url, bundle);
tlds.add(new TldProvider.TldEntry(bundle, url));
}
public void foundInJar(Bundle bundle, String jarName, ZipEntry entry, InputStream in) throws Exception {
URL jarURL = bundle.getEntry(jarName);
URL url = new URL("jar:" + jarURL.toString() + "!/" + entry.getName());
LOGGER.debug("Found {} TLD in bundle {}", url, bundle);
tlds.add(new TldProvider.TldEntry(bundle, url, jarURL));
}
}
}