xref: /unit/src/java/nginx/unit/websocket/TransformationFactory.java (revision 1157:7ae152bda303)
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