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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.reactor;
29  
30  import java.io.IOException;
31  import java.nio.channels.CancelledKeyException;
32  
33  import org.apache.hc.core5.io.GracefullyCloseable;
34  import org.apache.hc.core5.io.ShutdownType;
35  
36  abstract class InternalChannel implements GracefullyCloseable {
37  
38      abstract void onIOEvent(final int ops) throws IOException;
39  
40      abstract void onTimeout() throws IOException;
41  
42      abstract void onException(final Exception cause);
43  
44      abstract int getTimeout();
45  
46      abstract long getLastReadTime();
47  
48      final void handleIOEvent(final int ops) {
49          try {
50              onIOEvent(ops);
51          } catch (final CancelledKeyException ex) {
52              shutdown(ShutdownType.GRACEFUL);
53          } catch (final Exception ex) {
54              onException(ex);
55              shutdown(ShutdownType.IMMEDIATE);
56          }
57      }
58  
59      final boolean checkTimeout(final long currentTime) {
60          final int timeout = getTimeout();
61          if (timeout > 0) {
62              final long deadline = getLastReadTime() + timeout;
63              if (currentTime > deadline) {
64                  try {
65                      onTimeout();
66                  } catch (final CancelledKeyException ex) {
67                      shutdown(ShutdownType.GRACEFUL);
68                  } catch (final Exception ex) {
69                      onException(ex);
70                      shutdown(ShutdownType.IMMEDIATE);
71                  }
72                  return false;
73              }
74          }
75          return true;
76      }
77  
78  }