package org.jolokia.osgi.detector;
/*
* Copyright 2009-2013 Roland Huss
*
* 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.
*/
import java.util.Dictionary;
import org.jolokia.detector.AbstractServerDetector;
import org.jolokia.osgi.servlet.JolokiaServlet;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
/**
* @author roland
* @since 04.12.10
*/
public abstract class AbstractOsgiServerDetector extends AbstractServerDetector {
protected String getSystemBundleVersion() {
Dictionary headers = getSystemBundleHeaders();
return (String) headers.get("Bundle-Version");
}
protected String getBundleVersion(String pSymbolicName) {
BundleContext context = JolokiaServlet.getCurrentBundleContext();
if (context != null) {
for (Bundle bundle: context.getBundles()) {
if (pSymbolicName.equalsIgnoreCase(bundle.getSymbolicName())) {
Dictionary headers = bundle.getHeaders();
return (String) headers.get("Bundle-Version");
}
}
}
return null;
}
protected boolean checkSystemBundleForSymbolicName(String pSymbolicName) {
Dictionary headers = getSystemBundleHeaders();
if (headers != null) {
String name = (String) headers.get("Bundle-SymbolicName");
return name.startsWith(pSymbolicName);
} else {
// No bundle context given --> no osgi server detection available
return false;
}
}
private Dictionary getSystemBundleHeaders() {
BundleContext context = JolokiaServlet.getCurrentBundleContext();
if (context != null) {
Bundle systemBundle = context.getBundle(0);
return systemBundle.getHeaders();
} else {
return null;
}
}
}