1 /*
2 * JBoss, Home of Professional Open Source.
3 * Copyright 2014 Red Hat, Inc., and individual contributors
4 * as indicated by the @author tags.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package io.undertow.server;
20
21 import io.undertow.util.ConduitFactory;
22 import org.xnio.conduits.Conduit;
23
24 /**
25 * Interface that provides a means of wrapping a {@link Conduit}. Every conduit wrapper has a chance
26 * to replace the conduit with a conduit which either wraps or replaces the passed in conduit. However it is the responsibility
27 * of either the conduit wrapper instance or the conduit it creates to ensure that the original conduit is eventually
28 * cleaned up and shut down properly when the request is terminated.
29 *
30 * @author Stuart Douglas
31 */
32 public interface ConduitWrapper<T extends Conduit> {
33
34 /**
35 * Wrap the conduit. The wrapper should not return {@code null}. If no wrapping is desired, the original
36 * conduit should be returned.
37 *
38 * @param factory the original conduit
39 * @param exchange the in-flight HTTP exchange
40 * @return the replacement conduit
41 */
42 T wrap(final ConduitFactory<T> factory, final HttpServerExchange exchange);
43 }
44