1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27
28 package org.apache.hc.core5.http.nio.command;
29
30 import org.apache.hc.core5.annotation.Internal;
31 import org.apache.hc.core5.http.ConnectionClosedException;
32 import org.apache.hc.core5.http.nio.AsyncClientExchangeHandler;
33 import org.apache.hc.core5.reactor.Command;
34 import org.apache.hc.core5.reactor.IOSession;
35 import org.apache.hc.core5.util.Args;
36
37 /**
38 * {@link Command} utility methods.
39 *
40 * @since 5.0
41 */
42 @Internal
43 public final class CommandSupport {
44
45 /**
46 * Fails all pending session {@link Command}s.
47 */
48 static public void failCommands(final IOSession ioSession, final Exception ex) {
49 Args.notNull(ioSession, "I/O session");
50 Command command;
51 while ((command = ioSession.poll()) != null) {
52 if (command instanceof RequestExecutionCommand) {
53 final AsyncClientExchangeHandler exchangeHandler = ((RequestExecutionCommand) command).getExchangeHandler();
54 try {
55 exchangeHandler.failed(ex);
56 } finally {
57 exchangeHandler.releaseResources();
58 }
59 } else {
60 command.cancel();
61 }
62 }
63 }
64
65 /**
66 * Cancels all pending session {@link Command}s.
67 */
68 static public void cancelCommands(final IOSession ioSession) {
69 Args.notNull(ioSession, "I/O session");
70 Command command;
71 while ((command = ioSession.poll()) != null) {
72 if (command instanceof RequestExecutionCommand) {
73 final AsyncClientExchangeHandler exchangeHandler = ((RequestExecutionCommand) command).getExchangeHandler();
74 try {
75 if (!ioSession.isOpen()) {
76 exchangeHandler.failed(new ConnectionClosedException());
77 } else {
78 exchangeHandler.cancel();
79 }
80 } finally {
81 exchangeHandler.releaseResources();
82 }
83 } else {
84 command.cancel();
85 }
86 }
87 }
88
89 }