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<h1>pushcons.cc</h1><a href="a00131.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- Mode: C++; -*-</span>
<a name="l00002"></a>00002 <span class="comment">// Package : omniEvents</span>
<a name="l00003"></a>00003 <span class="comment">// pushcons.cc Created : 1/4/98</span>
<a name="l00004"></a>00004 <span class="comment">// Author : Paul Nader (pwn)</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// Copyright (C) 1998 Paul Nader, 2003-2004 Alex Tingle</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// This file is part of the omniEvents application.</span>
<a name="l00009"></a>00009 <span class="comment">//</span>
<a name="l00010"></a>00010 <span class="comment">// omniEvents is free software; you can redistribute it and/or</span>
<a name="l00011"></a>00011 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00012"></a>00012 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00013"></a>00013 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// omniEvents is distributed in the hope that it will be useful,</span>
<a name="l00016"></a>00016 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00017"></a>00017 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00018"></a>00018 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00019"></a>00019 <span class="comment">//</span>
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00021"></a>00021 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00022"></a>00022 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00023"></a>00023 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment">// Description:</span>
<a name="l00025"></a>00025 <span class="comment">// Push Model consumer implementation</span>
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="comment">/*</span>
<a name="l00029"></a>00029 <span class="comment"> $Log: pushcons.cc,v $</span>
<a name="l00030"></a>00030 <span class="comment"> Revision 1.12.2.1 2005/06/16 09:39:49 alextingle</span>
<a name="l00031"></a>00031 <span class="comment"> Fixed theoretical race caused by sloppy use of condition variable.</span>
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment"> Revision 1.12 2004/10/08 09:06:08 alextingle</span>
<a name="l00034"></a>00034 <span class="comment"> More robust exception minor code handling.</span>
<a name="l00035"></a>00035 <span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment"> Revision 1.11 2004/08/18 17:49:45 alextingle</span>
<a name="l00037"></a>00037 <span class="comment"> Added check for SIGPIPE before trying to use it.</span>
<a name="l00038"></a>00038 <span class="comment"></span>
<a name="l00039"></a>00039 <span class="comment"> Revision 1.10 2004/08/06 16:19:23 alextingle</span>
<a name="l00040"></a>00040 <span class="comment"> -k & -K options removed.</span>
<a name="l00041"></a>00041 <span class="comment"> Naming service names may now be as complex as you like.</span>
<a name="l00042"></a>00042 <span class="comment"></span>
<a name="l00043"></a>00043 <span class="comment"> Revision 1.9 2004/04/30 17:54:47 alextingle</span>
<a name="l00044"></a>00044 <span class="comment"> Corrected handling of CORBA::Any.</span>
<a name="l00045"></a>00045 <span class="comment"></span>
<a name="l00046"></a>00046 <span class="comment"> Revision 1.8 2004/04/20 16:52:17 alextingle</span>
<a name="l00047"></a>00047 <span class="comment"> All examples updated for latest version on omniEvents. Server may now be</span>
<a name="l00048"></a>00048 <span class="comment"> specified as a 'corbaloc' string or IOR, instead of as naming service id/kind.</span>
<a name="l00049"></a>00049 <span class="comment"></span>
<a name="l00050"></a>00050 <span class="comment"> Revision 1.7 2004/04/01 22:28:36 alextingle</span>
<a name="l00051"></a>00051 <span class="comment"> Corrected usage message.</span>
<a name="l00052"></a>00052 <span class="comment"></span>
<a name="l00053"></a>00053 <span class="comment"> Revision 1.6 2004/03/23 19:09:26 alextingle</span>
<a name="l00054"></a>00054 <span class="comment"> Fixed typos.</span>
<a name="l00055"></a>00055 <span class="comment"></span>
<a name="l00056"></a>00056 <span class="comment"> Revision 1.5 2004/02/21 19:07:45 alextingle</span>
<a name="l00057"></a>00057 <span class="comment"> Corrected servants to use POA instead of BOA.</span>
<a name="l00058"></a>00058 <span class="comment"></span>
<a name="l00059"></a>00059 <span class="comment"> Revision 1.4 2004/02/04 22:29:55 alextingle</span>
<a name="l00060"></a>00060 <span class="comment"> Reworked all C++ examples.</span>
<a name="l00061"></a>00061 <span class="comment"> Removed catch(...) as it tends to make it harder to see what's going on.</span>
<a name="l00062"></a>00062 <span class="comment"> Now uses POA instead of BOA.</span>
<a name="l00063"></a>00063 <span class="comment"> Uses omniORB4's Exception name probing.</span>
<a name="l00064"></a>00064 <span class="comment"> No longer uses 'naming.h/cc' utility code.</span>
<a name="l00065"></a>00065 <span class="comment"></span>
<a name="l00066"></a>00066 <span class="comment"> Revision 1.3 2003/11/03 22:19:56 alextingle</span>
<a name="l00067"></a>00067 <span class="comment"> Removed all platform specific switches. Now uses autoconf, config.h.</span>
<a name="l00068"></a>00068 <span class="comment"> Removed stub header in order to allow makefile dependency checking to work</span>
<a name="l00069"></a>00069 <span class="comment"> correctly.</span>
<a name="l00070"></a>00070 <span class="comment"> Corrected usage of omni_condition/omni_mutex. Mutexes are now always unlocked by</span>
<a name="l00071"></a>00071 <span class="comment"> the same thread that locked them.</span>
<a name="l00072"></a>00072 <span class="comment"></span>
<a name="l00073"></a>00073 <span class="comment"> Revision 1.1.1.1.2.1 2002/09/28 22:20:51 shamus13</span>
<a name="l00074"></a>00074 <span class="comment"> Added ifdefs to enable omniEvents to compile</span>
<a name="l00075"></a>00075 <span class="comment"> with both omniORB3 and omniORB4. If __OMNIORB4__</span>
<a name="l00076"></a>00076 <span class="comment"> is defined during compilation, omniORB4 headers</span>
<a name="l00077"></a>00077 <span class="comment"> and command line option syntax is used, otherwise</span>
<a name="l00078"></a>00078 <span class="comment"> fall back to omniORB3 style.</span>
<a name="l00079"></a>00079 <span class="comment"></span>
<a name="l00080"></a>00080 <span class="comment"> Revision 1.1.1.1 2002/09/25 19:00:26 shamus13</span>
<a name="l00081"></a>00081 <span class="comment"> Import of OmniEvents source tree from release 2.1.1</span>
<a name="l00082"></a>00082 <span class="comment"></span>
<a name="l00083"></a>00083 <span class="comment"> Revision 0.13 2000/08/30 04:39:48 naderp</span>
<a name="l00084"></a>00084 <span class="comment"> Port to omniORB 3.0.1.</span>
<a name="l00085"></a>00085 <span class="comment"></span>
<a name="l00086"></a>00086 <span class="comment"> Revision 0.12 2000/03/16 05:37:27 naderp</span>
<a name="l00087"></a>00087 <span class="comment"> Added stdlib.h for getopt.</span>
<a name="l00088"></a>00088 <span class="comment"></span>
<a name="l00089"></a>00089 <span class="comment"> Revision 0.11 2000/03/06 13:27:02 naderp</span>
<a name="l00090"></a>00090 <span class="comment"> Using util getRootNamingContext function.</span>
<a name="l00091"></a>00091 <span class="comment"> Using stub headers.</span>
<a name="l00092"></a>00092 <span class="comment"> Fixed error messages.</span>
<a name="l00093"></a>00093 <span class="comment"></span>
<a name="l00094"></a>00094 <span class="comment"> Revision 0.10 2000/03/02 03:20:24 naderp</span>
<a name="l00095"></a>00095 <span class="comment"> Added retry resiliency for handling COMM_FAUILURE exceptions.</span>
<a name="l00096"></a>00096 <span class="comment"></span>
<a name="l00097"></a>00097 <span class="comment"> Revision 0.9 1999/11/02 13:39:15 naderp</span>
<a name="l00098"></a>00098 <span class="comment"> Added <signal.h></span>
<a name="l00099"></a>00099 <span class="comment"></span>
<a name="l00100"></a>00100 <span class="comment"> Revision 0.8 1999/11/02 07:57:04 naderp</span>
<a name="l00101"></a>00101 <span class="comment"> Updated usage.</span>
<a name="l00102"></a>00102 <span class="comment"></span>
<a name="l00103"></a>00103 <span class="comment">Revision 0.7 99/11/01 18:10:29 18:10:29 naderp (Paul Nader)</span>
<a name="l00104"></a>00104 <span class="comment">Added ahndling of COMM_FAILURE exception for connect_push_consumer.</span>
<a name="l00105"></a>00105 <span class="comment"></span>
<a name="l00106"></a>00106 <span class="comment">Revision 0.6 99/11/01 16:11:03 16:11:03 naderp (Paul Nader)</span>
<a name="l00107"></a>00107 <span class="comment">omniEvents 2.0 Release.</span>
<a name="l00108"></a>00108 <span class="comment"></span>
<a name="l00109"></a>00109 <span class="comment">Revision 0.5 99/10/27 19:46:01 19:46:01 naderp (Paul Nader)</span>
<a name="l00110"></a>00110 <span class="comment">Ignoring Unix SIGPIPE signal.</span>
<a name="l00111"></a>00111 <span class="comment">Catching COMM_FAILURE exception for obtain_push_supplier.</span>
<a name="l00112"></a>00112 <span class="comment">Continuing if it fails to obtain Proxy Supplier.</span>
<a name="l00113"></a>00113 <span class="comment">Try/Catch block for disconnect_push_supplier.</span>
<a name="l00114"></a>00114 <span class="comment"></span>
<a name="l00115"></a>00115 <span class="comment">Revision 0.4 99/04/23 16:05:46 16:05:46 naderp (Paul Nader)</span>
<a name="l00116"></a>00116 <span class="comment">gcc port.</span>
<a name="l00117"></a>00117 <span class="comment"></span>
<a name="l00118"></a>00118 <span class="comment">Revision 0.3 99/04/23 09:34:03 09:34:03 naderp (Paul Nader)</span>
<a name="l00119"></a>00119 <span class="comment">Windows Port.</span>
<a name="l00120"></a>00120 <span class="comment"></span>
<a name="l00121"></a>00121 <span class="comment">Revision 0.2 99/04/21 18:06:26 18:06:26 naderp (Paul Nader)</span>
<a name="l00122"></a>00122 <span class="comment">*** empty log message ***</span>
<a name="l00123"></a>00123 <span class="comment"></span>
<a name="l00124"></a>00124 <span class="comment">Revision 0.1.1.1 98/11/27 16:59:37 16:59:37 naderp (Paul Nader)</span>
<a name="l00125"></a>00125 <span class="comment">Added -s option to sleep after disconnecting.</span>
<a name="l00126"></a>00126 <span class="comment"></span>
<a name="l00127"></a>00127 <span class="comment">Revision 0.1 98/11/25 14:08:21 14:08:21 naderp (Paul Nader)</span>
<a name="l00128"></a>00128 <span class="comment">Initial Revision</span>
<a name="l00129"></a>00129 <span class="comment"></span>
<a name="l00130"></a>00130 <span class="comment">*/</span>
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00133"></a>00133 <span class="preprocessor"></span><span class="preprocessor"># include "<a class="code" href="a00083.html">config.h</a>"</span>
<a name="l00134"></a>00134 <span class="preprocessor">#endif</span>
<a name="l00135"></a>00135 <span class="preprocessor"></span>
<a name="l00136"></a>00136 <span class="preprocessor">#ifdef HAVE_GETOPT</span>
<a name="l00137"></a>00137 <span class="preprocessor"></span><span class="preprocessor"># include <unistd.h></span>
<a name="l00138"></a>00138 <span class="keyword">extern</span> <span class="keywordtype">char</span>* <a class="code" href="a00104.html#a3">optarg</a>;
<a name="l00139"></a>00139 <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="a00104.html#a2">optind</a>;
<a name="l00140"></a>00140 <span class="preprocessor">#else</span>
<a name="l00141"></a>00141 <span class="preprocessor"></span><span class="preprocessor"># include "<a class="code" href="a00105.html">getopt.h</a>"</span>
<a name="l00142"></a>00142 <span class="preprocessor">#endif</span>
<a name="l00143"></a>00143 <span class="preprocessor"></span>
<a name="l00144"></a>00144 <span class="preprocessor">#ifdef HAVE_IOSTREAM</span>
<a name="l00145"></a>00145 <span class="preprocessor"></span><span class="preprocessor"># include <iostream></span>
<a name="l00146"></a>00146 <span class="preprocessor">#else</span>
<a name="l00147"></a>00147 <span class="preprocessor"></span><span class="preprocessor"># include <iostream.h></span>
<a name="l00148"></a>00148 <span class="preprocessor">#endif</span>
<a name="l00149"></a>00149 <span class="preprocessor"></span>
<a name="l00150"></a>00150 <span class="preprocessor">#ifdef HAVE_STD_IOSTREAM</span>
<a name="l00151"></a>00151 <span class="preprocessor"></span><span class="keyword">using</span> <span class="keyword">namespace </span>std;
<a name="l00152"></a>00152 <span class="preprocessor">#endif</span>
<a name="l00153"></a>00153 <span class="preprocessor"></span>
<a name="l00154"></a>00154 <span class="preprocessor">#ifdef HAVE_STDLIB_H</span>
<a name="l00155"></a>00155 <span class="preprocessor"></span><span class="preprocessor"># include <stdlib.h></span>
<a name="l00156"></a>00156 <span class="preprocessor">#endif</span>
<a name="l00157"></a>00157 <span class="preprocessor"></span>
<a name="l00158"></a>00158 <span class="preprocessor">#ifdef HAVE_SIGNAL_H</span>
<a name="l00159"></a>00159 <span class="preprocessor"></span><span class="preprocessor"># include <signal.h></span>
<a name="l00160"></a>00160 <span class="preprocessor">#endif</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span>
<a name="l00162"></a>00162 <span class="preprocessor">#include "CosEventComm.hh"</span>
<a name="l00163"></a>00163 <span class="preprocessor">#include "CosEventChannelAdmin.hh"</span>
<a name="l00164"></a>00164 <span class="preprocessor">#include "<a class="code" href="a00110.html">naming.h</a>"</span>
<a name="l00165"></a>00165
<a name="l00166"></a><a class="code" href="a00131.html#a0">00166</a> <span class="keyword">static</span> omni_mutex <a class="code" href="a00131.html#a0">mutex</a>;
<a name="l00167"></a>00167 <span class="keyword">static</span> omni_condition <a class="code" href="a00130.html#a0">connect_cond</a>(&<a class="code" href="a00131.html#a0">mutex</a>);
<a name="l00168"></a>00168 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="a00141.html#a5">usage</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv);
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keyword">class </span><a class="code" href="a00042.html">Consumer_i</a> : <span class="keyword">virtual</span> <span class="keyword">public</span> POA_CosEventComm::PushConsumer {
<a name="l00171"></a>00171 <span class="keyword">public</span>:
<a name="l00172"></a><a class="code" href="a00042.html#a6">00172</a> <a class="code" href="a00042.html#a4">Consumer_i</a>(<span class="keywordtype">long</span> disconnect=0): <a class="code" href="a00042.html#r1">_disconnect</a>(disconnect) {}
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordtype">void</span> <a class="code" href="a00042.html#a1">push</a>(<span class="keyword">const</span> CORBA::Any& data);
<a name="l00175"></a>00175 <span class="keywordtype">void</span> <a class="code" href="a00042.html#a2">disconnect_push_consumer</a> ();
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="keyword">private</span>:
<a name="l00178"></a><a class="code" href="a00042.html#r1">00178</a> <span class="keywordtype">long</span> <a class="code" href="a00042.html#r1">_disconnect</a>;
<a name="l00179"></a>00179 };
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="keywordtype">void</span> <a class="code" href="a00042.html#a1">Consumer_i::push</a>(<span class="keyword">const</span> CORBA::Any& data) {
<a name="l00182"></a>00182 CORBA::ULong l;
<a name="l00183"></a>00183 <span class="keyword">static</span> <span class="keywordtype">int</span> i = 0;
<a name="l00184"></a>00184
<a name="l00185"></a>00185 i++;
<a name="l00186"></a>00186 <span class="keywordflow">if</span>( data>>=l )
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 cout<<<span class="stringliteral">"Push Consumer: push() called. Data : "</span><< l <<endl;
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="comment">// Exercise Disconnect</span>
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (i == <a class="code" href="a00042.html#r1">_disconnect</a>)
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 i = 0;
<a name="l00194"></a>00194 <span class="comment">// NOTE : The proxy_supplier object is disposed at the server</span>
<a name="l00195"></a>00195 <span class="comment">// during the disconnect_push_supplier call. Do NOT</span>
<a name="l00196"></a>00196 <span class="comment">// use the proxy_supplier reference after disconnecting.</span>
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="comment">// Signal main thread to disconnect and re-connect.</span>
<a name="l00199"></a>00199 omni_mutex_lock condition_lock(<a class="code" href="a00131.html#a0">mutex</a>); <span class="comment">// ensure main thread in wait()</span>
<a name="l00200"></a>00200 <a class="code" href="a00130.html#a0">connect_cond</a>.signal();
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 <span class="keywordflow">else</span>
<a name="l00204"></a>00204 {
<a name="l00205"></a>00205 cerr<<<span class="stringliteral">"Push Consumer: push() called. UNEXPECTED TYPE"</span><<endl;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="keywordtype">void</span> <a class="code" href="a00042.html#a2">Consumer_i::disconnect_push_consumer</a> () {
<a name="l00210"></a>00210 cout << <span class="stringliteral">"Push Consumer: disconnected."</span> << endl;
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="keywordtype">int</span>
<a name="l00214"></a><a class="code" href="a00131.html#a3">00214</a> <a class="code" href="a00106.html#a0">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 <span class="comment">//</span>
<a name="l00217"></a>00217 <span class="comment">// Start orb.</span>
<a name="l00218"></a>00218 CORBA::ORB_ptr <a class="code" href="a00097.html#a0">orb</a> = CORBA::ORB_init(argc,argv);
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="comment">// Process Options</span>
<a name="l00221"></a>00221 <span class="keywordtype">int</span> discnum =0;
<a name="l00222"></a>00222 <span class="keywordtype">int</span> sleepInterval =0;
<a name="l00223"></a>00223 <span class="keyword">const</span> <span class="keywordtype">char</span>* channelName =<span class="stringliteral">"EventChannel"</span>;
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <span class="keywordtype">int</span> c;
<a name="l00226"></a>00226 <span class="keywordflow">while</span> ((c = <a class="code" href="a00104.html#a5">getopt</a>(argc,argv,<span class="stringliteral">"hd:s:n:"</span>)) != EOF)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 <span class="keywordflow">switch</span> (c)
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 <span class="keywordflow">case</span> <span class="charliteral">'d'</span>: discnum = atoi(<a class="code" href="a00104.html#a3">optarg</a>);
<a name="l00231"></a>00231 <span class="keywordflow">break</span>;
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="keywordflow">case</span> <span class="charliteral">'s'</span>: sleepInterval = atoi(<a class="code" href="a00104.html#a3">optarg</a>);
<a name="l00234"></a>00234 <span class="keywordflow">break</span>;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="keywordflow">case</span> <span class="charliteral">'n'</span>: channelName = <a class="code" href="a00104.html#a3">optarg</a>;
<a name="l00237"></a>00237 <span class="keywordflow">break</span>;
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="keywordflow">case</span> <span class="charliteral">'h'</span>: <a class="code" href="a00141.html#a5">usage</a>(argc,argv);
<a name="l00240"></a>00240 exit(0);
<a name="l00241"></a>00241 <span class="keywordflow">default</span> : <a class="code" href="a00141.html#a5">usage</a>(argc,argv);
<a name="l00242"></a>00242 exit(-1);
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="preprocessor">#if defined(HAVE_SIGNAL_H) && defined(SIGPIPE)</span>
<a name="l00247"></a>00247 <span class="preprocessor"></span> <span class="comment">// Ignore broken pipes</span>
<a name="l00248"></a>00248 signal(SIGPIPE, SIG_IGN);
<a name="l00249"></a>00249 <span class="preprocessor">#endif</span>
<a name="l00250"></a>00250 <span class="preprocessor"></span>
<a name="l00251"></a>00251 <a class="code" href="a00042.html">Consumer_i</a>* consumer = <span class="keyword">new</span> <a class="code" href="a00042.html">Consumer_i</a> (discnum);
<a name="l00252"></a>00252 CosEventChannelAdmin::EventChannel_var channel;
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="keyword">const</span> <span class="keywordtype">char</span>* action=<span class="stringliteral">""</span>; <span class="comment">// Use this variable to help report errors.</span>
<a name="l00255"></a>00255 <span class="keywordflow">try</span> {
<a name="l00256"></a>00256 CORBA::Object_var obj;
<a name="l00257"></a>00257
<a name="l00258"></a>00258 action=<span class="stringliteral">"resolve initial reference 'RootPOA'"</span>;
<a name="l00259"></a>00259 obj=orb->resolve_initial_references(<span class="stringliteral">"RootPOA"</span>);
<a name="l00260"></a>00260 PortableServer::POA_var rootPoa =PortableServer::POA::_narrow(obj);
<a name="l00261"></a>00261 <span class="keywordflow">if</span>(CORBA::is_nil(rootPoa))
<a name="l00262"></a>00262 <span class="keywordflow">throw</span> CORBA::OBJECT_NOT_EXIST();
<a name="l00263"></a>00263
<a name="l00264"></a>00264 action=<span class="stringliteral">"activate the RootPOA's POAManager"</span>;
<a name="l00265"></a>00265 PortableServer::POAManager_var pman =rootPoa->the_POAManager();
<a name="l00266"></a>00266 pman->activate();
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">//</span>
<a name="l00269"></a>00269 <span class="comment">// Obtain object reference to EventChannel</span>
<a name="l00270"></a>00270 <span class="comment">// (from command-line argument or from the Naming Service).</span>
<a name="l00271"></a>00271 <span class="keywordflow">if</span>(<a class="code" href="a00104.html#a2">optind</a><argc)
<a name="l00272"></a>00272 {
<a name="l00273"></a>00273 action=<span class="stringliteral">"convert URI from command line into object reference"</span>;
<a name="l00274"></a>00274 obj=orb->string_to_object(argv[<a class="code" href="a00104.html#a2">optind</a>]);
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 <span class="keywordflow">else</span>
<a name="l00277"></a>00277 {
<a name="l00278"></a>00278 action=<span class="stringliteral">"resolve initial reference 'NameService'"</span>;
<a name="l00279"></a>00279 obj=orb->resolve_initial_references(<span class="stringliteral">"NameService"</span>);
<a name="l00280"></a>00280 CosNaming::NamingContext_var rootContext=
<a name="l00281"></a>00281 CosNaming::NamingContext::_narrow(obj);
<a name="l00282"></a>00282 <span class="keywordflow">if</span>(CORBA::is_nil(rootContext))
<a name="l00283"></a>00283 <span class="keywordflow">throw</span> CORBA::OBJECT_NOT_EXIST();
<a name="l00284"></a>00284
<a name="l00285"></a>00285 action=<span class="stringliteral">"find EventChannel in NameService"</span>;
<a name="l00286"></a>00286 cout << action << endl;
<a name="l00287"></a>00287 obj=rootContext->resolve(<a class="code" href="a00109.html#a1">str2name</a>(channelName));
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289
<a name="l00290"></a>00290 action=<span class="stringliteral">"narrow object reference to event channel"</span>;
<a name="l00291"></a>00291 channel=CosEventChannelAdmin::EventChannel::_narrow(obj);
<a name="l00292"></a>00292 <span class="keywordflow">if</span>(CORBA::is_nil(channel))
<a name="l00293"></a>00293 {
<a name="l00294"></a>00294 cerr << <span class="stringliteral">"Failed to narrow Event Channel reference."</span> << endl;
<a name="l00295"></a>00295 exit(1);
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 }
<a name="l00299"></a>00299 <span class="keywordflow">catch</span>(CORBA::ORB::InvalidName& ex) { <span class="comment">// resolve_initial_references</span>
<a name="l00300"></a>00300 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". ORB::InvalidName"</span><<endl;
<a name="l00301"></a>00301 exit(1);
<a name="l00302"></a>00302 }
<a name="l00303"></a>00303 <span class="keywordflow">catch</span>(CosNaming::NamingContext::InvalidName& ex) { <span class="comment">// resolve</span>
<a name="l00304"></a>00304 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". NamingContext::InvalidName"</span><<endl;
<a name="l00305"></a>00305 exit(1);
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 <span class="keywordflow">catch</span>(CosNaming::NamingContext::NotFound& ex) { <span class="comment">// resolve</span>
<a name="l00308"></a>00308 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". NamingContext::NotFound"</span><<endl;
<a name="l00309"></a>00309 exit(1);
<a name="l00310"></a>00310 }
<a name="l00311"></a>00311 <span class="keywordflow">catch</span>(CosNaming::NamingContext::CannotProceed& ex) { <span class="comment">// resolve</span>
<a name="l00312"></a>00312 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". NamingContext::CannotProceed"</span><<endl;
<a name="l00313"></a>00313 exit(1);
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315 <span class="keywordflow">catch</span>(CORBA::TRANSIENT& ex) { <span class="comment">// _narrow()</span>
<a name="l00316"></a>00316 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". TRANSIENT"</span><<endl;
<a name="l00317"></a>00317 exit(1);
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319 <span class="keywordflow">catch</span>(CORBA::OBJECT_NOT_EXIST& ex) { <span class="comment">// _narrow()</span>
<a name="l00320"></a>00320 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">". OBJECT_NOT_EXIST"</span><<endl;
<a name="l00321"></a>00321 exit(1);
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323 <span class="keywordflow">catch</span>(CORBA::SystemException& ex) {
<a name="l00324"></a>00324 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">"."</span>;
<a name="l00325"></a>00325 <span class="preprocessor">#if defined(HAVE_OMNIORB4)</span>
<a name="l00326"></a>00326 <span class="preprocessor"></span> cerr<<<span class="stringliteral">" "</span><<ex._name();
<a name="l00327"></a>00327 <span class="keywordflow">if</span>(ex.NP_minorString())
<a name="l00328"></a>00328 cerr<<<span class="stringliteral">" ("</span><<ex.NP_minorString()<<<span class="stringliteral">")"</span>;
<a name="l00329"></a>00329 <span class="preprocessor">#endif</span>
<a name="l00330"></a>00330 <span class="preprocessor"></span> cerr<<endl;
<a name="l00331"></a>00331 exit(1);
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 <span class="keywordflow">catch</span>(CORBA::Exception& ex) {
<a name="l00334"></a>00334 cerr<<<span class="stringliteral">"Failed to "</span><<action<<<span class="stringliteral">"."</span>
<a name="l00335"></a>00335 <span class="preprocessor">#if defined(HAVE_OMNIORB4)</span>
<a name="l00336"></a>00336 <span class="preprocessor"></span> <span class="stringliteral">" "</span><<ex._name()
<a name="l00337"></a>00337 <span class="preprocessor">#endif</span>
<a name="l00338"></a>00338 <span class="preprocessor"></span> <<endl;
<a name="l00339"></a>00339 exit(1);
<a name="l00340"></a>00340 }
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="comment">//</span>
<a name="l00343"></a>00343 <span class="comment">// Get Consumer admin interface - retrying on Comms Failure.</span>
<a name="l00344"></a>00344 CosEventChannelAdmin::ConsumerAdmin_var consumer_admin;
<a name="l00345"></a>00345 <span class="keywordflow">while</span> (1)
<a name="l00346"></a>00346 {
<a name="l00347"></a>00347 <span class="keywordflow">try</span> {
<a name="l00348"></a>00348 consumer_admin = channel->for_consumers ();
<a name="l00349"></a>00349 <span class="keywordflow">if</span> (CORBA::is_nil (consumer_admin))
<a name="l00350"></a>00350 {
<a name="l00351"></a>00351 cerr << <span class="stringliteral">"Event Channel returned nil Consumer Admin!"</span> << endl;
<a name="l00352"></a>00352 exit(1);
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354 <span class="keywordflow">break</span>;
<a name="l00355"></a>00355 }
<a name="l00356"></a>00356 <span class="keywordflow">catch</span> (CORBA::COMM_FAILURE& ex) {
<a name="l00357"></a>00357 cerr << <span class="stringliteral">"Caught COMM_FAILURE exception "</span>
<a name="l00358"></a>00358 << <span class="stringliteral">"obtaining Consumer Admin! Retrying..."</span>
<a name="l00359"></a>00359 << endl;
<a name="l00360"></a>00360 <span class="keywordflow">continue</span>;
<a name="l00361"></a>00361 }
<a name="l00362"></a>00362 }
<a name="l00363"></a>00363 cout << <span class="stringliteral">"Obtained ConsumerAdmin."</span> << endl;
<a name="l00364"></a>00364
<a name="l00365"></a>00365 omni_mutex_lock condition_lock(<a class="code" href="a00131.html#a0">mutex</a>);
<a name="l00366"></a>00366 <span class="keywordflow">while</span> (1) {
<a name="l00367"></a>00367 <span class="comment">//</span>
<a name="l00368"></a>00368 <span class="comment">// Get proxy supplier - retrying on Comms Failure.</span>
<a name="l00369"></a>00369 CosEventChannelAdmin::ProxyPushSupplier_var proxy_supplier;
<a name="l00370"></a>00370 <span class="keywordflow">while</span> (1)
<a name="l00371"></a>00371 {
<a name="l00372"></a>00372 <span class="keywordflow">try</span> {
<a name="l00373"></a>00373 proxy_supplier = consumer_admin->obtain_push_supplier ();
<a name="l00374"></a>00374 <span class="keywordflow">if</span> (CORBA::is_nil (proxy_supplier))
<a name="l00375"></a>00375 {
<a name="l00376"></a>00376 cerr << <span class="stringliteral">"Consumer Admin returned nil proxy_supplier!"</span>
<a name="l00377"></a>00377 << endl;
<a name="l00378"></a>00378 exit (1);
<a name="l00379"></a>00379 }
<a name="l00380"></a>00380 <span class="keywordflow">break</span>;
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382 <span class="keywordflow">catch</span> (CORBA::COMM_FAILURE& ex) {
<a name="l00383"></a>00383 cerr << <span class="stringliteral">"Caught COMM_FAILURE Exception "</span>
<a name="l00384"></a>00384 << <span class="stringliteral">"obtaining Push Supplier! Retrying..."</span>
<a name="l00385"></a>00385 << endl;
<a name="l00386"></a>00386 <span class="keywordflow">continue</span>;
<a name="l00387"></a>00387 }
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389 cout << <span class="stringliteral">"Obtained ProxyPushSupplier."</span> << endl;
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="comment">//</span>
<a name="l00392"></a>00392 <span class="comment">// Connect Push Consumer - retrying on Comms Failure.</span>
<a name="l00393"></a>00393 <span class="keywordflow">while</span> (1)
<a name="l00394"></a>00394 {
<a name="l00395"></a>00395 <span class="keywordflow">try</span> {
<a name="l00396"></a>00396 proxy_supplier->connect_push_consumer(consumer->_this());
<a name="l00397"></a>00397 <span class="keywordflow">break</span>;
<a name="l00398"></a>00398 }
<a name="l00399"></a>00399 <span class="keywordflow">catch</span> (CORBA::BAD_PARAM& ex) {
<a name="l00400"></a>00400 cerr << <span class="stringliteral">"Caught BAD_PARAM Exception connecting Push Consumer!"</span>
<a name="l00401"></a>00401 << endl;
<a name="l00402"></a>00402 exit (1);
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404 <span class="keywordflow">catch</span> (CosEventChannelAdmin::AlreadyConnected& ex) {
<a name="l00405"></a>00405 cerr << <span class="stringliteral">"Proxy Push Supplier already connected!"</span>
<a name="l00406"></a>00406 << endl;
<a name="l00407"></a>00407 <span class="keywordflow">break</span>;
<a name="l00408"></a>00408 }
<a name="l00409"></a>00409 <span class="keywordflow">catch</span> (CORBA::COMM_FAILURE& ex) {
<a name="l00410"></a>00410 cerr << <span class="stringliteral">"Caught COMM_FAILURE exception "</span>
<a name="l00411"></a>00411 << <span class="stringliteral">"connecting Push Consumer! Retrying..."</span>
<a name="l00412"></a>00412 << endl;
<a name="l00413"></a>00413 <span class="keywordflow">continue</span>;
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415 }
<a name="l00416"></a>00416 cout << <span class="stringliteral">"Connected Push Consumer."</span> << endl;
<a name="l00417"></a>00417
<a name="l00418"></a>00418 <span class="comment">// Wait for indication to disconnect before re-connecting.</span>
<a name="l00419"></a>00419 <a class="code" href="a00130.html#a0">connect_cond</a>.wait();
<a name="l00420"></a>00420
<a name="l00421"></a>00421 <span class="comment">// Disconnect - retrying on Comms Failure.</span>
<a name="l00422"></a>00422 <span class="keywordflow">while</span> (1)
<a name="l00423"></a>00423 {
<a name="l00424"></a>00424 <span class="keywordflow">try</span> {
<a name="l00425"></a>00425 proxy_supplier->disconnect_push_supplier();
<a name="l00426"></a>00426 <span class="keywordflow">break</span>;
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428 <span class="keywordflow">catch</span> (CORBA::COMM_FAILURE& ex) {
<a name="l00429"></a>00429 cerr << <span class="stringliteral">"Caught COMM_FAILURE Exception "</span>
<a name="l00430"></a>00430 << <span class="stringliteral">"disconnecting Push Consumer! Retrying..."</span>
<a name="l00431"></a>00431 << endl;
<a name="l00432"></a>00432 <span class="keywordflow">continue</span>;
<a name="l00433"></a>00433 }
<a name="l00434"></a>00434 }
<a name="l00435"></a>00435 cout << <span class="stringliteral">"Disconnected Push Consumer."</span> << endl;
<a name="l00436"></a>00436
<a name="l00437"></a>00437 <span class="comment">// Yawn</span>
<a name="l00438"></a>00438 cout << <span class="stringliteral">"Sleeping "</span> << sleepInterval << <span class="stringliteral">" seconds."</span> << endl;
<a name="l00439"></a>00439 omni_thread::sleep(sleepInterval);
<a name="l00440"></a>00440 }
<a name="l00441"></a>00441
<a name="l00442"></a>00442 <span class="comment">// NEVER GET HERE</span>
<a name="l00443"></a>00443 <span class="keywordflow">return</span> 0;
<a name="l00444"></a>00444 }
<a name="l00445"></a>00445
<a name="l00446"></a>00446 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00447"></a><a class="code" href="a00131.html#a2">00447</a> <a class="code" href="a00141.html#a5">usage</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
<a name="l00448"></a>00448 {
<a name="l00449"></a>00449 cerr<<
<a name="l00450"></a>00450 <span class="stringliteral">"\nCreate a PushConsumer to receive events from a channel.\n"</span>
<a name="l00451"></a>00451 <span class="stringliteral">"syntax: "</span><<(argc?argv[0]:<span class="stringliteral">"pushcons"</span>)<<<span class="stringliteral">" OPTIONS [CHANNEL_URI]\n"</span>
<a name="l00452"></a>00452 <span class="stringliteral">"\n"</span>
<a name="l00453"></a>00453 <span class="stringliteral">"CHANNEL_URI: The event channel may be specified as a URI.\n"</span>
<a name="l00454"></a>00454 <span class="stringliteral">" This may be an IOR, or a corbaloc::: or corbaname::: URI.\n"</span>
<a name="l00455"></a>00455 <span class="stringliteral">"\n"</span>
<a name="l00456"></a>00456 <span class="stringliteral">"OPTIONS: DEFAULT:\n"</span>
<a name="l00457"></a>00457 <span class="stringliteral">" -d NUM disconnect after receiving NUM events [0 - never disconnect]\n"</span>
<a name="l00458"></a>00458 <span class="stringliteral">" -s SECS sleep SECS seconds after disconnecting [0]\n"</span>
<a name="l00459"></a>00459 <span class="stringliteral">" -n NAME channel name (if URI is not specified) [\"EventChannel\"]\n"</span>
<a name="l00460"></a>00460 <span class="stringliteral">" -h display this help text\n"</span> << endl;
<a name="l00461"></a>00461 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Aug 26 20:56:14 2005 for OmniEvents by
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