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 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, July 2004 00034 @author Kris 00035 00036 00037 *******************************************************************************/ 00038 00039 module mango.cluster.qos.socket.ClusterEvent; 00040 00041 private import mango.io.Buffer; 00042 00043 private import mango.cluster.model.ICluster; 00044 00045 /******************************************************************************* 00046 00047 The socket QOS implementation of IEvent 00048 00049 *******************************************************************************/ 00050 00051 class ClusterEvent : IEvent 00052 { 00053 private IEvent.Style style; 00054 private ICluster cluster; 00055 private IChannel channel; 00056 private IEventListener listener; 00057 00058 private static char[][] styleNames = ["bulletin", "message"]; 00059 00060 /*********************************************************************** 00061 00062 ***********************************************************************/ 00063 00064 this (ICluster cluster, IChannel channel, IEvent.Style style, IEventListener listener) 00065 { 00066 this.style = style; 00067 this.cluster = cluster; 00068 this.channel = channel; 00069 this.listener = listener; 00070 } 00071 00072 /*********************************************************************** 00073 00074 ***********************************************************************/ 00075 00076 IChannel getChannel () 00077 { 00078 return channel; 00079 } 00080 00081 /*********************************************************************** 00082 00083 ***********************************************************************/ 00084 00085 IEvent.Style getStyle () 00086 { 00087 return style; 00088 } 00089 00090 /*********************************************************************** 00091 00092 ***********************************************************************/ 00093 00094 char[] getStyleName () 00095 { 00096 return styleNames [style]; 00097 } 00098 00099 /*********************************************************************** 00100 00101 ***********************************************************************/ 00102 00103 void invoke (IPayload payload) 00104 { 00105 // dispatch notification 00106 listener.notify (this, payload); 00107 } 00108 00109 /*********************************************************************** 00110 00111 Send a payload back to the producer. This should support all 00112 the various event styles. 00113 00114 ***********************************************************************/ 00115 00116 void reply (char[] channel, IPayload payload) 00117 in { 00118 assert (channel.length); 00119 } 00120 body 00121 { 00122 IChannel ch = cluster.createChannel (channel); 00123 00124 if (style == IEvent.Style.Message) 00125 cluster.putQueue (ch, payload); 00126 else 00127 cluster.broadcast (ch, payload); 00128 } 00129 } 00130