WildFlyURLStreamHandlerFactory.java

/*
 * #%L
 * Gravia :: Container :: WildFly :: Extension
 * %%
 * Copyright (C) 2010 - 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.wildfly.extension.gravia.service;

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

import org.jboss.gravia.runtime.Runtime;
import org.jboss.gravia.runtime.RuntimeLocator;
import org.jboss.gravia.runtime.spi.RuntimeFactory;
import org.jboss.gravia.runtime.spi.URLStreamHandlerTracker;

/**
 * The WildFly {@link RuntimeFactory}
 *
 * @author thomas.diesler@jboss.com
 * @since 16-May-2014
 */
public class WildFlyURLStreamHandlerFactory implements URLStreamHandlerFactory {

    private static URLStreamHandlerTracker tracker;

    public WildFlyURLStreamHandlerFactory() {

        // META-INF/service discovery happens on every call to the factory
        // we need to delegate to the single instance
        synchronized (WildFlyURLStreamHandlerFactory.class) {
            if (tracker == null) {
                Runtime runtime = RuntimeLocator.getRequiredRuntime();
                tracker = new URLStreamHandlerTracker(runtime.getModuleContext());
                tracker.open();
            }
        }
    }

    @Override
    public URLStreamHandler createURLStreamHandler(String protocol) {
        return tracker.createURLStreamHandler(protocol);
    }
}