org.netbeans.NetigsoLoader Maven / Gradle / Ivy
/*
* 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.netbeans;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.logging.Level;
import org.openide.util.Exceptions;
import org.openide.util.Mutex;
/**
*
* @author Jaroslav Tulach
*/
final class NetigsoLoader extends ClassLoader {
private final Module mi;
public NetigsoLoader(Module mi) {
this.mi = mi;
}
@Override
public Class loadClass(String className) throws ClassNotFoundException {
ClassLoader del = getDelegate(10000);
if (del == null) {
Util.err.log(Level.WARNING,
"Time out waiting to enabled {0}. Cannot load {1}",
new Object[]{mi.getCodeNameBase(), className}
);
throw new ClassNotFoundException(className);
}
return del.loadClass(className);
}
@Override
protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
ClassLoader d = getDelegate();
if (d instanceof ProxyClassLoader) {
return ((ProxyClassLoader)d).loadClass(name, resolve);
} else {
return d.loadClass(name);
}
}
@Override
public Enumeration getResources(String string) throws IOException {
return getDelegate().getResources(string);
}
@Override
public InputStream getResourceAsStream(String string) {
return getDelegate().getResourceAsStream(string);
}
@Override
public URL getResource(String string) {
return getDelegate().getResource(string);
}
private ClassLoader getDelegate() {
return getDelegate(0);
}
private ClassLoader getDelegate(long timeout) {
if (!mi.isEnabled()) {
Util.err.log(Level.INFO,
"OSGi is requesting adhoc start of {0}. This is inefficient. "
+ "It is suggested turn the module on by default",
mi.getCodeNameBase()
);
Mutex.Privileged p = mi.getManager().mutexPrivileged();
if (!p.tryWriteAccess(timeout)) {
return null;
}
try {
mi.getManager().enable(mi, false);
} catch (IllegalArgumentException ex) {
Exceptions.printStackTrace(ex);
} catch (InvalidException ex) {
Exceptions.printStackTrace(ex);
} finally {
p.exitWriteAccess();
}
}
return mi.getClassLoader();
}
} // end of DelegateLoader