1*1157Smax.romanov@nginx.com /* 2*1157Smax.romanov@nginx.com * Licensed to the Apache Software Foundation (ASF) under one or more 3*1157Smax.romanov@nginx.com * contributor license agreements. See the NOTICE file distributed with 4*1157Smax.romanov@nginx.com * this work for additional information regarding copyright ownership. 5*1157Smax.romanov@nginx.com * The ASF licenses this file to You under the Apache License, Version 2.0 6*1157Smax.romanov@nginx.com * (the "License"); you may not use this file except in compliance with 7*1157Smax.romanov@nginx.com * the License. You may obtain a copy of the License at 8*1157Smax.romanov@nginx.com * 9*1157Smax.romanov@nginx.com * http://www.apache.org/licenses/LICENSE-2.0 10*1157Smax.romanov@nginx.com * 11*1157Smax.romanov@nginx.com * Unless required by applicable law or agreed to in writing, software 12*1157Smax.romanov@nginx.com * distributed under the License is distributed on an "AS IS" BASIS, 13*1157Smax.romanov@nginx.com * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14*1157Smax.romanov@nginx.com * See the License for the specific language governing permissions and 15*1157Smax.romanov@nginx.com * limitations under the License. 16*1157Smax.romanov@nginx.com */ 17*1157Smax.romanov@nginx.com package nginx.unit.websocket; 18*1157Smax.romanov@nginx.com 19*1157Smax.romanov@nginx.com import java.util.List; 20*1157Smax.romanov@nginx.com 21*1157Smax.romanov@nginx.com import javax.websocket.Extension; 22*1157Smax.romanov@nginx.com 23*1157Smax.romanov@nginx.com import org.apache.tomcat.util.res.StringManager; 24*1157Smax.romanov@nginx.com 25*1157Smax.romanov@nginx.com public class TransformationFactory { 26*1157Smax.romanov@nginx.com 27*1157Smax.romanov@nginx.com private static final StringManager sm = StringManager.getManager(TransformationFactory.class); 28*1157Smax.romanov@nginx.com 29*1157Smax.romanov@nginx.com private static final TransformationFactory factory = new TransformationFactory(); 30*1157Smax.romanov@nginx.com TransformationFactory()31*1157Smax.romanov@nginx.com private TransformationFactory() { 32*1157Smax.romanov@nginx.com // Hide default constructor 33*1157Smax.romanov@nginx.com } 34*1157Smax.romanov@nginx.com getInstance()35*1157Smax.romanov@nginx.com public static TransformationFactory getInstance() { 36*1157Smax.romanov@nginx.com return factory; 37*1157Smax.romanov@nginx.com } 38*1157Smax.romanov@nginx.com create(String name, List<List<Extension.Parameter>> preferences, boolean isServer)39*1157Smax.romanov@nginx.com public Transformation create(String name, List<List<Extension.Parameter>> preferences, 40*1157Smax.romanov@nginx.com boolean isServer) { 41*1157Smax.romanov@nginx.com if (PerMessageDeflate.NAME.equals(name)) { 42*1157Smax.romanov@nginx.com return PerMessageDeflate.negotiate(preferences, isServer); 43*1157Smax.romanov@nginx.com } 44*1157Smax.romanov@nginx.com if (Constants.ALLOW_UNSUPPORTED_EXTENSIONS) { 45*1157Smax.romanov@nginx.com return null; 46*1157Smax.romanov@nginx.com } else { 47*1157Smax.romanov@nginx.com throw new IllegalArgumentException( 48*1157Smax.romanov@nginx.com sm.getString("transformerFactory.unsupportedExtension", name)); 49*1157Smax.romanov@nginx.com } 50*1157Smax.romanov@nginx.com } 51*1157Smax.romanov@nginx.com } 52