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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.CloseMode;
34  import org.apache.hc.core5.io.ModalCloseable;
35  import org.apache.hc.core5.util.Timeout;
36  
37  abstract class InternalChannel implements ModalCloseable {
38  
39      abstract void onIOEvent(final int ops) throws IOException;
40  
41      abstract void onTimeout(Timeout timeout) throws IOException;
42  
43      abstract void onException(final Exception cause);
44  
45      abstract Timeout getTimeout();
46  
47      abstract long getLastReadTime();
48  
49      final void handleIOEvent(final int ops) {
50          try {
51              onIOEvent(ops);
52          } catch (final CancelledKeyException ex) {
53              close(CloseMode.GRACEFUL);
54          } catch (final Exception ex) {
55              onException(ex);
56              close(CloseMode.IMMEDIATE);
57          }
58      }
59  
60      final boolean checkTimeout(final long currentTimeMillis) {
61          final Timeout timeout = getTimeout();
62          if (!timeout.isDisabled()) {
63              final long timeoutMillis = timeout.toMillis();
64              final long deadlineMillis = getLastReadTime() + timeoutMillis;
65              if (currentTimeMillis > deadlineMillis) {
66                  try {
67                      onTimeout(timeout);
68                  } catch (final CancelledKeyException ex) {
69                      close(CloseMode.GRACEFUL);
70                  } catch (final Exception ex) {
71                      onException(ex);
72                      close(CloseMode.IMMEDIATE);
73                  }
74                  return false;
75              }
76          }
77          return true;
78      }
79  
80  }