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Java > Open Source Codes > org > codehaus > spice > netserve > connection > impl > AbstractLoggingAcceptorMonitor


1 package org.codehaus.spice.netserve.connection.impl;
2
3 import java.io.IOException JavaDoc;
4 import java.net.ServerSocket JavaDoc;
5
6 /**
7  * An abstract monitor that writes out messages
8  * for acceptor events. Need to subclass and implement
9  * methods to write out log messages.
10  */

11 public abstract class AbstractLoggingAcceptorMonitor
12    implements AcceptorMonitor
13 {
14    /**
15     * @see AcceptorMonitor#acceptorCreated
16     */

17    public void acceptorCreated( final String JavaDoc name,
18                                 final ServerSocket JavaDoc serverSocket )
19    {
20       final String JavaDoc message =
21          "Creating Acceptor " + name + " on " +
22          serverSocket.getInetAddress().getHostAddress() + ":" +
23          serverSocket.getLocalPort() + ".";
24       info( message );
25    }
26
27    /**
28     * @see AcceptorMonitor#acceptorClosing
29     */

30    public void acceptorClosing( final String JavaDoc name,
31                                 final ServerSocket JavaDoc serverSocket )
32    {
33       final String JavaDoc message = "Closing Acceptor " + name + ".";
34       info( message );
35    }
36
37    /**
38     * @see AcceptorMonitor#serverSocketListening
39     */

40    public void serverSocketListening( final String JavaDoc name,
41                                       final ServerSocket JavaDoc serverSocket )
42    {
43       if ( isDebugEnabled() )
44       {
45          final String JavaDoc message =
46             "About to call accept() on ServerSocket '" + name + "'.";
47          debug( message );
48       }
49    }
50
51    /**
52     * @see AcceptorMonitor#errorAcceptingConnection
53     */

54    public void errorAcceptingConnection( final String JavaDoc name,
55                                          final IOException JavaDoc ioe )
56    {
57       warn( "Error Accepting connection on " + name, ioe );
58    }
59
60    /**
61     * @see AcceptorMonitor#errorClosingServerSocket
62     */

63    public void errorClosingServerSocket( final String JavaDoc name,
64                                          final IOException JavaDoc ioe )
65    {
66       warn( "Error Closing Server Socket " + name, ioe );
67    }
68
69    /**
70     * Return true if debug logging enabled.
71     *
72     * @return true if debug logging enabled.
73     */

74    protected abstract boolean isDebugEnabled();
75
76    /**
77     * Write out debug message.
78     *
79     * @param message the message
80     */

81    protected abstract void debug( String JavaDoc message );
82
83    /**
84     * Write out info message.
85     *
86     * @param message the message
87     */

88    protected abstract void info( String JavaDoc message );
89
90    /**
91     * Write out warn message.
92     *
93     * @param message the message
94     * @param e the warnings cause
95     */

96    protected abstract void warn( String JavaDoc message, Exception JavaDoc e );
97 }
98
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