autobind/integrations/metro/src/main/java/org/apache/onami/autobind/integrations/metro/AutomaticGuiceManager.java

package org.apache.onami.autobind.integrations.metro;

/*
 * 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.
 */

import javax.xml.ws.WebServiceContext;

import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.sun.istack.NotNull;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.api.server.ResourceInjector;
import com.sun.xml.ws.api.server.WSEndpoint;
import com.sun.xml.ws.api.server.WSWebServiceContext;
import com.sun.xml.ws.server.AbstractMultiInstanceResolver;

public class AutomaticGuiceManager<T> extends AbstractMultiInstanceResolver<T> {
	private static Module startup;
	protected static Injector injector;
	protected ResourceInjector resourceInjector;
	protected WSWebServiceContext webServiceContext;

	public AutomaticGuiceManager(@NotNull final Class<T> clazz) throws IllegalAccessException,
			InstantiationException {
		super(clazz);
	}

	@Override
	public T resolve(@NotNull final Packet packet) {
		final T instance = injector.getInstance(this.clazz);
		resourceInjector.inject(this.webServiceContext, instance);
		return instance;
	}

	@SuppressWarnings("rawtypes")
	@Override
	public synchronized void start(WSWebServiceContext wsc, WSEndpoint endpoint) {
		resourceInjector = getResourceInjector(endpoint);
		webServiceContext = wsc;
		if(injector == null){
			injector = Guice.createInjector(startup, new AbstractModule() {
				@Override
				protected void configure() {
					bind(WebServiceContext.class).toInstance(webServiceContext);
				}
			});
		}
	}
	
	public static void inject(Module startup){
		AutomaticGuiceManager.startup = startup;
	}
}