hu.icellmobilsoft.coffee.rest.validation.catalog.MavenURLStreamHandlerProvider Maven / Gradle / Ivy
/*-
* #%L
* Coffee
* %%
* Copyright (C) 2020 i-Cell Mobilsoft Zrt.
* %%
* 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 hu.icellmobilsoft.coffee.rest.validation.catalog;
import java.net.URLStreamHandler;
import java.net.spi.URLStreamHandlerProvider;
import hu.icellmobilsoft.coffee.se.logging.Logger;
import hu.icellmobilsoft.coffee.tool.protocol.handler.MavenURLHandler;
/**
* "maven" URL protocol olvasashoz szolgalo Provider. Regisztralni szukseges a
* src/main/resources/META-INF/services/java.net.spi.URLStreamHandlerProvider fajlban
*
* @author imre.scheffer
* @since 1.0.0
*/
public class MavenURLStreamHandlerProvider extends URLStreamHandlerProvider {
private static final Logger LOGGER = Logger.getLogger(MavenURLStreamHandlerProvider.class);
private static String PREFIX = "sun.net.www.protocol";
/**
* Default constructor, constructs a new object.
*/
public MavenURLStreamHandlerProvider() {
super();
}
/** {@inheritDoc} */
@Override
public URLStreamHandler createURLStreamHandler(String protocol) {
LOGGER.info("MavenURLStreamHandlerProvider registered");
// Somehow we need to obtain the original Handler classes,
// but it's not a clean solution, and neither the `java.protocol.handler.pkgs` setting
//nor the `src/main/resources/META-INF/services/java.net.spi.URLStreamHandlerProvider` solution works in TT,
// because JBoss reads its own `ModularURLStreamHandlerFactory` class during startup.
return "maven".equals(protocol) ? new MavenURLHandler() : createDefaultURLStreamHandler(protocol);
}
/**
* {@code URL$DefaultFactory} osztaly masolata
*
* @param protocol
* protocol
*
* @return default {@code URLStreamHandler} or null in case of any exception
*
*/
private URLStreamHandler createDefaultURLStreamHandler(String protocol) {
String name = PREFIX + "." + protocol + ".Handler";
try {
Object o = Class.forName(name).getDeclaredConstructor().newInstance();
return (URLStreamHandler) o;
} catch (ClassNotFoundException x) {
// ignore
} catch (Exception e) {
// For compatibility, all Exceptions are ignored.
// any number of exceptions can get thrown here
}
return null;
}
}