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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  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,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.filter.query;
21  
22  import java.util.Map;
23  import java.util.concurrent.ScheduledFuture;
24  
25  import org.apache.mina.api.IoSession;
26  import org.apache.mina.util.AbstractIoFuture;
27  
28  /**
29   * A future representing the promise of a reply to a request.
30   * 
31   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
32   * 
33   * @param <REQUEST> the request type
34   * @param <RESPONSE> the response type
35   */
36  class RequestFuture<REQUEST extends Request, RESPONSE extends Response> extends AbstractIoFuture<RESPONSE> {
37  
38      private final IoSession session;
39  
40      private final Object id;
41  
42      private ScheduledFuture<?> schedFuture;
43  
44      public RequestFuture(IoSession session, Object id) {
45          this.session = session;
46          this.id = id;
47      }
48  
49      @Override
50      protected boolean cancelOwner(boolean mayInterruptIfRunning) {
51          throw new IllegalStateException("not implemented");
52      }
53  
54      void complete(RESPONSE response) {
55          if (schedFuture != null) {
56              schedFuture.cancel(true);
57          }
58          setResult(response);
59      }
60  
61      void setTimeoutFuture(ScheduledFuture<?> schedFuture) {
62          this.schedFuture = schedFuture;
63      }
64  
65      Runnable timeout = new Runnable() {
66  
67          @SuppressWarnings("rawtypes")
68          @Override
69          public void run() {
70              Map inFlight = session.getAttribute(RequestFilter.IN_FLIGHT_REQUESTS);
71              if (inFlight != null) {
72                  inFlight.remove(id);
73              }
74              setException(new RequestTimeoutException());
75  
76          }
77      };
78  }