00001 /******************************************************************************* 00002 00003 @file ClusterEvent.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 00027 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00028 00029 00030 @version Initial version, July 2004 00031 @author Kris 00032 00033 00034 *******************************************************************************/ 00035 00036 module mango.cluster.qos.socket.ClusterEvent; 00037 00038 private import mango.io.Buffer; 00039 00040 private import mango.cluster.model.ICluster; 00041 00042 /******************************************************************************* 00043 00044 The socket QOS implementation of IEvent 00045 00046 *******************************************************************************/ 00047 00048 class ClusterEvent : IEvent 00049 { 00050 private IEvent.Style style; 00051 private ICluster cluster; 00052 private IChannel channel; 00053 private IEventListener listener; 00054 00055 private static char[][] styleNames = ["bulletin", "message"]; 00056 00057 /*********************************************************************** 00058 00059 ***********************************************************************/ 00060 00061 this (ICluster cluster, IChannel channel, IEvent.Style style, IEventListener listener) 00062 { 00063 this.style = style; 00064 this.cluster = cluster; 00065 this.channel = channel; 00066 this.listener = listener; 00067 } 00068 00069 /*********************************************************************** 00070 00071 ***********************************************************************/ 00072 00073 IChannel getChannel () 00074 { 00075 return channel; 00076 } 00077 00078 /*********************************************************************** 00079 00080 ***********************************************************************/ 00081 00082 IEvent.Style getStyle () 00083 { 00084 return style; 00085 } 00086 00087 /*********************************************************************** 00088 00089 ***********************************************************************/ 00090 00091 char[] getStyleName () 00092 { 00093 return styleNames [style]; 00094 } 00095 00096 /*********************************************************************** 00097 00098 ***********************************************************************/ 00099 00100 void invoke (IPayload payload) 00101 { 00102 // dispatch notification 00103 listener.notify (this, payload); 00104 } 00105 00106 /*********************************************************************** 00107 00108 Send a payload back to the producer. This should support all 00109 the various event styles. 00110 00111 ***********************************************************************/ 00112 00113 void reply (char[] channel, IPayload payload) 00114 in { 00115 assert (channel.length); 00116 } 00117 body 00118 { 00119 IChannel ch = cluster.createChannel (channel); 00120 00121 if (style == IEvent.Style.Message) 00122 cluster.putQueue (ch, payload); 00123 else 00124 cluster.broadcast (ch, payload); 00125 } 00126 } 00127