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<hr><h1>ProxyManager.cc</h1><a href="a00118.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// Package : omniEvents</font>
00002 <font class="comment">// ProxyManager.cc Created : 2003/12/04</font>
00003 <font class="comment">// Author : Alex Tingle</font>
00004 <font class="comment">//</font>
00005 <font class="comment">// Copyright (C) 2003 Alex Tingle.</font>
00006 <font class="comment">//</font>
00007 <font class="comment">// This file is part of the omniEvents application.</font>
00008 <font class="comment">//</font>
00009 <font class="comment">// omniEvents is free software; you can redistribute it and/or</font>
00010 <font class="comment">// modify it under the terms of the GNU Lesser General Public</font>
00011 <font class="comment">// License as published by the Free Software Foundation; either</font>
00012 <font class="comment">// version 2.1 of the License, or (at your option) any later version.</font>
00013 <font class="comment">//</font>
00014 <font class="comment">// omniEvents is distributed in the hope that it will be useful,</font>
00015 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00016 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00017 <font class="comment">// Lesser General Public License for more details.</font>
00018 <font class="comment">//</font>
00019 <font class="comment">// You should have received a copy of the GNU Lesser General Public</font>
00020 <font class="comment">// License along with this library; if not, write to the Free Software</font>
00021 <font class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00022 <font class="comment">//</font>
00023
00024 <font class="preprocessor">#include "<a class="code" href="a00119.html">ProxyManager.h</a>"</font>
00025 <font class="preprocessor">#include "<a class="code" href="a00117.html">PersistNode.h</a>"</font>
00026 <font class="preprocessor">#include "<a class="code" href="a00115.html">Orb.h</a>"</font>
00027 <font class="preprocessor">#include "<a class="code" href="a00113.html">omniEventsLog.h</a>"</font>
00028
00029 <font class="preprocessor">#include <string></font>
00030 <font class="preprocessor">#include <map></font>
00031 <font class="preprocessor">#include <assert.h></font>
00032 <font class="preprocessor">#include <memory></font>
00033
00034 <font class="keyword">namespace </font>OmniEvents {
00035
00036 <font class="comment">//</font>
00037 <font class="comment">// ProxyManager</font>
00038 <font class="comment">//</font>
00039
00040 <font class="keywordtype">void</font>
<a name="l00041"></a><a class="code" href="a00062.html#a0">00041</a> ProxyManager::etherealize(
00042 <font class="keyword">const</font> PortableServer::ObjectId& oid,
00043 PortableServer::POA_ptr adapter,
00044 PortableServer::Servant serv,
00045 CORBA::Boolean cleanup_in_progress,
00046 CORBA::Boolean remaining_activations
00047 )
00048 {
00049 auto_ptr<Proxy> narrowed( dynamic_cast<Proxy*>(serv) );
00050 assert(narrowed.get()!=NULL);
00051 set<Proxy*>::iterator pos =<a class="code" href="a00062.html#n0">_servants</a>.find(narrowed.get());
00052 <font class="keywordflow">if</font>(pos!=<a class="code" href="a00062.html#n0">_servants</a>.end())
00053 <a class="code" href="a00062.html#n0">_servants</a>.erase(pos);
00054 <font class="keywordflow">else</font>
00055 <a class="code" href="a00115.html#a2">DB</a>(1,<font class="stringliteral">"\t\teh? - POA attempted to etherealize unknown servant."</font>);
00056 <font class="comment">// memory freed when narrowed goes out of scope.</font>
00057 }
00058
00059
<a name="l00060"></a><a class="code" href="a00062.html#a1">00060</a> <font class="keywordtype">void</font> ProxyManager::reincarnate(<font class="keyword">const</font> <a class="code" href="a00060.html">PersistNode</a>& node)
00061 {
00062 <font class="comment">// Reincarnate all connections from node's children.</font>
00063 <font class="keywordflow">for</font>(map<string,PersistNode*>::const_iterator i=node.<a class="code" href="a00060.html#m0">_child</a>.begin();
00064 i!=node.<a class="code" href="a00060.html#m0">_child</a>.end();
00065 ++i)
00066 {
00067 assert(i->second!=NULL);
00068 PortableServer::Servant serv =
00069 this->incarnate(PortableServer::ObjectId(),<a class="code" href="a00062.html#n1">_managedPoa</a>);
00070 <a class="code" href="a00061.html">Proxy</a>* proxy =dynamic_cast<Proxy*>(serv);
00071 assert(proxy!=NULL);
00072 <font class="keywordflow">try</font>
00073 {
00074 proxy-><a class="code" href="a00061.html#a1">reincarnate</a>(i->first,*(i->second));
00075 }
00076 <font class="keywordflow">catch</font>(CORBA::BAD_PARAM& ex)
00077 {
00078 <font class="comment">// This will happen when IOR fails to narrow.</font>
00079 <a class="code" href="a00115.html#a2">DB</a>(5,<font class="stringliteral">"Failed to reincarnate proxy: "</font><<i->first.c_str());
00080 <a class="code" href="a00062.html#n0">_servants</a>.erase(proxy);
00081 <font class="keyword">delete</font> proxy;
00082 }
00083 }
00084 }
00085
00086
<a name="l00087"></a><a class="code" href="a00062.html#a2">00087</a> <font class="keywordtype">void</font> ProxyManager::output(ostream& os)
00088 {
00089 <font class="keywordflow">for</font>(set<Proxy*>::iterator i =<a class="code" href="a00062.html#n0">_servants</a>.begin(); i!=<a class="code" href="a00062.html#n0">_servants</a>.end(); ++i)
00090 {
00091 (*i)-><a class="code" href="a00061.html#a2">output</a>(os);
00092 }
00093 }
00094
00095
<a name="l00096"></a><a class="code" href="a00062.html#b0">00096</a> ProxyManager::ProxyManager(PortableServer::POA_ptr p, <font class="keyword">const</font> <font class="keywordtype">char</font>* name)
00097 : <a class="code" href="a00073.html">Servant</a>(p),
00098 _servants(),
00099 _managedPoa(PortableServer::POA::_nil())
00100 {
00101 <font class="keyword">using</font> <font class="keyword">namespace </font>PortableServer;
00102 <font class="keywordflow">try</font>
00103 {
00104 <font class="comment">// POLICIES:</font>
00105 <font class="comment">// Lifespan =PERSISTENT // we can persist</font>
00106 <font class="comment">// Assignment =USER_ID // write our own oid</font>
00107 <font class="comment">// Uniqueness =[default] UNIQUE_ID // one servant per object</font>
00108 <font class="comment">// ImplicitActivation=NO_IMPLICIT_ACTIVATION // disable auto activation</font>
00109 <font class="comment">// RequestProcessing =USE_SERVANT_MANAGER</font>
00110 <font class="comment">// ServantRetention =[default] RETAIN</font>
00111 <font class="comment">// Thread =SINGLE_THREAD_MODEL // keep it simple</font>
00112
00113 CORBA::PolicyList policies;
00114 policies.length(5);
00115 policies[0]=p->create_lifespan_policy(PERSISTENT);
00116 policies[1]=p->create_id_assignment_policy(USER_ID);
00117 policies[2]=p->create_implicit_activation_policy(NO_IMPLICIT_ACTIVATION);
00118 policies[3]=p->create_request_processing_policy(USE_SERVANT_MANAGER);
00119 policies[4]=p->create_thread_policy(SINGLE_THREAD_MODEL);
00120
00121 <font class="comment">// Create a POA for this proxy type in this channel.</font>
00122 CORBA::String_var parentName =p->the_name();
00123 string poaName =string(parentName.in())+<font class="stringliteral">"."</font>+name;
00124 POAManager_var parentManager =p->the_POAManager();
00125 <a class="code" href="a00062.html#n1">_managedPoa</a>=p->create_POA(poaName.c_str(),parentManager.in(),policies);
00126 }
00127 <font class="keywordflow">catch</font>(POA::AdapterAlreadyExists& ex) <font class="comment">// create_POA</font>
00128 {
00129 <a class="code" href="a00115.html#a2">DB</a>(0,<font class="stringliteral">"ProxyManager::ProxyManager() - POA::AdapterAlreadyExists"</font>)
00130 }
00131 <font class="keywordflow">catch</font>(POA::InvalidPolicy& ex) <font class="comment">// create_POA</font>
00132 {
00133 <a class="code" href="a00115.html#a2">DB</a>(0,<font class="stringliteral">"ProxyManager::ProxyManager() - POA::InvalidPolicy: "</font><<ex.index)
00134 }
00135 string oidStr =string(name)+<font class="stringliteral">"Manager"</font>;
00136 <a class="code" href="a00073.html#b1">activateObjectWithId</a>(oidStr.c_str());
00137 <a class="code" href="a00062.html#n1">_managedPoa</a>->set_servant_manager(_this());
00138 }
00139
00140
<a name="l00141"></a><a class="code" href="a00062.html#b1">00141</a> ProxyManager::~ProxyManager()
00142 {
00143 <font class="comment">// pass</font>
00144 }
00145
00146
00147 <font class="comment">//</font>
00148 <font class="comment">// Proxy</font>
00149 <font class="comment">//</font>
00150
00151
<a name="l00152"></a><a class="code" href="a00061.html#a0">00152</a> Proxy::~Proxy()
00153 {
00154 <font class="keywordflow">if</font>(!CORBA::is_nil(<a class="code" href="a00061.html#n0">_req</a>))
00155 {
00156 Orb::inst().deferredRequest(<a class="code" href="a00061.html#n0">_req</a>._retn());
00157 <a class="code" href="a00061.html#n0">_req</a>=CORBA::Request::_nil();
00158 }
00159 }
00160
<a name="l00161"></a><a class="code" href="a00061.html#b0">00161</a> Proxy::Proxy(PortableServer::POA_ptr poa)
00162 : <a class="code" href="a00073.html">Servant</a>(poa),
00163 _req(CORBA::Request::_nil())
00164 {
00165 <font class="comment">// pass</font>
00166 }
00167
<a name="l00168"></a><a class="code" href="a00061.html#b1">00168</a> <font class="keywordtype">void</font> Proxy::keyOutput(ostream& os, <font class="keyword">const</font> <font class="keywordtype">char</font>* name)
00169 {
00170 PortableServer::POA_var parentPoa=<a class="code" href="a00073.html#n0">_poa</a>->the_parent();
00171 CORBA::String_var channelName=parentPoa->the_name();
00172
00173 PortableServer::ObjectId_var oid=<a class="code" href="a00073.html#n0">_poa</a>->servant_to_id(<font class="keyword">this</font>);
00174 CORBA::String_var oidStr =PortableServer::ObjectId_to_string(oid.in());
00175 os<<<font class="stringliteral">"ecf/"</font><<channelName.in()<<<font class="stringliteral">"/"</font><<name<<<font class="stringliteral">"/"</font><<oidStr.in();
00176 }
00177
<a name="l00178"></a><a class="code" href="a00061.html#b2">00178</a> <font class="keywordtype">void</font> Proxy::eraseKey(<font class="keyword">const</font> <font class="keywordtype">char</font>* name)
00179 {
00180 <font class="comment">// Remove this key from the persistency logfile.</font>
00181 <a class="code" href="a00080.html">WriteLock</a> log;
00182 log.<a class="code" href="a00080.html#m0">os</a><<<font class="stringliteral">"-"</font>;
00183 <a class="code" href="a00061.html#b1">keyOutput</a>(log.<a class="code" href="a00080.html#m0">os</a>,name);
00184 log.<a class="code" href="a00080.html#m0">os</a><<<font class="charliteral">'\n'</font>;
00185 }
00186
<a name="l00187"></a><a class="code" href="a00061.html#b3">00187</a> <font class="keywordtype">void</font> Proxy::basicOutput(
00188 ostream& os,
00189 <font class="keyword">const</font> <font class="keywordtype">char</font>* name,
00190 CORBA::Object_ptr target,
00191 <font class="keyword">const</font> <font class="keywordtype">char</font>* extraAttributes
00192 )
00193 {
00194 <a class="code" href="a00061.html#b1">keyOutput</a>(os,name);
00195 <font class="keywordflow">if</font>(!CORBA::is_nil(target))
00196 {
00197 CORBA::String_var iorstr =Orb::inst()._orb->object_to_string(target);
00198 os<<<font class="stringliteral">" IOR="</font><<iorstr.in();
00199 <font class="keywordflow">if</font>(extraAttributes)
00200 os<<extraAttributes;
00201 }
00202 os<<<font class="stringliteral">" ;;\n"</font>;
00203 }
00204
00205
00206 }; <font class="comment">// end namespace OmniEvents</font>
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