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SocketAppender.d

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00001 /*******************************************************************************
00002 
00003         @file SocketAppender.d
00004 
00005         Copyright (c) 2004 Kris Bell
00006         
00007         This software is provided 'as-is', without any express or implied
00008         warranty. In no event will the authors be held liable for damages
00009         of any kind arising from the use of this software.
00010         
00011         Permission is hereby granted to anyone to use this software for any 
00012         purpose, including commercial applications, and to alter it and/or 
00013         redistribute it freely, subject to the following restrictions:
00014         
00015         1. The origin of this software must not be misrepresented; you must 
00016            not claim that you wrote the original software. If you use this 
00017            software in a product, an acknowledgment within documentation of 
00018            said product would be appreciated but is not required.
00019 
00020         2. Altered source versions must be plainly marked as such, and must 
00021            not be misrepresented as being the original software.
00022 
00023         3. This notice may not be removed or altered from any distribution
00024            of the source.
00025 
00026         4. Derivative works are permitted, but they must carry this notice
00027            in full and credit the original source.
00028 
00029 
00030                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00031 
00032       
00033         @version        Initial version, May 2004
00034         @author         Kris
00035 
00036 
00037 *******************************************************************************/
00038 
00039 module mango.log.SocketAppender;
00040 
00041 private import  mango.log.Appender;
00042 
00043 version (Mango)
00044         {
00045         private import  mango.io.Buffer,
00046                         mango.io.SocketConduit;
00047         }
00048      else
00049         {
00050         private import  std.stream,
00051                         std.Socket,
00052                         std.SocketStream;
00053         }
00054 
00055 /*******************************************************************************
00056 
00057         Appender for sending formatted output to a Socket.
00058 
00059 *******************************************************************************/
00060 
00061 public class SocketAppender : Appender
00062 {
00063         private static uint mask;
00064 
00065         version (Mango)
00066                  private IBuffer buffer;
00067               else
00068                  private SocketStream stream;
00069 
00070         /***********************************************************************
00071                 
00072                 Get a unique fingerprint for this class
00073 
00074         ***********************************************************************/
00075 
00076         static this()
00077         {
00078                 mask = nextMask();
00079         }
00080 
00081         /***********************************************************************
00082                 
00083                 Create with the given Layout and address
00084 
00085         ***********************************************************************/
00086 
00087         this (Layout layout, InternetAddress address)
00088         {
00089                 setLayout (layout);
00090                 setAddress (address);
00091         }
00092 
00093         /***********************************************************************
00094              
00095              Ensure the socket is closed when we're GC'd
00096                 
00097         ***********************************************************************/
00098 
00099         ~this ()
00100         {
00101                 close();
00102         }
00103 
00104         /***********************************************************************
00105                
00106                Set the destination address and port for this socket
00107 
00108         ***********************************************************************/
00109 
00110         void setAddress (InternetAddress address)
00111         {
00112                 close ();
00113                 
00114                 version (Mango)
00115                         {
00116                         try {
00117                             SocketConduit socket = new SocketConduit ();
00118                             socket.connect (address);
00119                             buffer = socket.createBuffer ();
00120                             } catch (Object x)
00121                                      printf ("SocketAppender: failed to connect\n");
00122                         }
00123                      else
00124                         {
00125                         try {
00126                             Socket s = new Socket (AddressFamily.INET, SocketType.STREAM, ProtocolType.IP);
00127                             s.connect (address);
00128                             stream = new SocketStream (s, FileMode.Out);
00129                             } catch (Object x)
00130                                      printf ("SocketAppender: failed to connect\n");
00131                         }
00132         }
00133 
00134         /***********************************************************************
00135                 
00136                 Return the fingerprint for this class
00137 
00138         ***********************************************************************/
00139 
00140         uint getMask ()
00141         {
00142                 return mask;
00143         }
00144 
00145         /***********************************************************************
00146                 
00147                 Return the name of this class
00148 
00149         ***********************************************************************/
00150 
00151         char[] getName ()
00152         {
00153                 return this.classinfo.name;
00154         }
00155                 
00156         /***********************************************************************
00157                 
00158                 Append an event to the output.
00159                  
00160         ***********************************************************************/
00161 
00162         void append (Event event)
00163         {
00164                 version (Mango)
00165                         {
00166                         if (buffer)
00167                            {
00168                            Layout layout = getLayout;
00169                            buffer.append (layout.header  (event));
00170                            buffer.append (layout.content (event));
00171                            buffer.append (layout.footer  (event)).flush();
00172                            }    
00173                         }
00174                      else
00175                         {
00176                         if (stream)
00177                            {
00178                            Layout layout = getLayout;
00179                            stream.writeString (layout.header  (event));
00180                            stream.writeString (layout.content (event));
00181                            stream.writeString (layout.footer  (event));
00182                            stream.flush ();
00183                            }    
00184                         }
00185         }
00186 
00187         /***********************************************************************
00188             
00189                 Close the socket associated with this Appender
00190                     
00191         ***********************************************************************/
00192 
00193         void close ()
00194         {
00195                 version (Mango)
00196                         {
00197                         if (buffer)
00198                             buffer.getConduit.close();
00199                         buffer = null;
00200                         }
00201                      else
00202                         {
00203                         if (stream)
00204                             stream.close ();
00205                         stream = null;
00206                         }
00207         }
00208 }

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