TaskContextServer.cpp
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00001 /***************************************************************************
00002   tag: Peter Soetens  Wed Jan 18 14:09:49 CET 2006  TaskContextServer.cxx
00003 
00004                         TaskContextServer.cxx -  description
00005                            -------------------
00006     begin                : Wed January 18 2006
00007     copyright            : (C) 2006 Peter Soetens
00008     email                : peter.soetens@fmtc.be
00009 
00010  ***************************************************************************
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU General Public                   *
00013  *   License as published by the Free Software Foundation;                 *
00014  *   version 2 of the License.                                             *
00015  *                                                                         *
00016  *   As a special exception, you may use this file as part of a free       *
00017  *   software library without restriction.  Specifically, if other files   *
00018  *   instantiate templates or use macros or inline functions from this     *
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00020  *   produce an executable, this file does not by itself cause the         *
00021  *   resulting executable to be covered by the GNU General Public          *
00022  *   License.  This exception does not however invalidate any other        *
00023  *   reasons why the executable file might be covered by the GNU General   *
00024  *   Public License.                                                       *
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00035  *                                                                         *
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00037 
00038 
00039 
00040 #include "TaskContextServer.hpp"
00041 #include "TaskContextProxy.hpp"
00042 #include "corba.h"
00043 #ifdef CORBA_IS_TAO
00044 #include "TaskContextS.h"
00045 #include <orbsvcs/CosNamingC.h>
00046 // ACE Specific, for printing exceptions.
00047 #include <ace/SString.h>
00048 #include "tao/TimeBaseC.h"
00049 #include "tao/Messaging/Messaging.h"
00050 #include "tao/Messaging/Messaging_RT_PolicyC.h"
00051 #else
00052 #include <omniORB4/Naming.hh>
00053 #endif
00054 #include "TaskContextC.h"
00055 #include "TaskContextI.h"
00056 #include "DataFlowI.h"
00057 #include "POAUtility.h"
00058 #include <iostream>
00059 #include <fstream>
00060 
00061 #include "../../os/threads.hpp"
00062 #include "../../Activity.hpp"
00063 
00064 namespace RTT
00065 {namespace corba
00066 {
00067     using namespace std;
00068 
00069     std::map<TaskContext*, TaskContextServer*> TaskContextServer::servers;
00070 
00071     base::ActivityInterface* TaskContextServer::orbrunner = 0;
00072 
00073     bool TaskContextServer::is_shutdown = false;
00074 
00075     std::map<TaskContext*, std::string> TaskContextServer::iors;
00076 
00077   TaskContextServer::~TaskContextServer()
00078   {
00079     Logger::In in("~TaskContextServer()");
00080     servers.erase(mtaskcontext);
00081 
00082     // Remove taskcontext ior reference
00083     iors.erase(mtaskcontext);
00084 
00085     PortableServer::ObjectId_var oid = mpoa->servant_to_id(mtask_i.in());
00086     mpoa->deactivate_object(oid);
00087 
00088     if (muse_naming) {
00089         try {
00090             CORBA::Object_var rootObj = orb->resolve_initial_references("NameService");
00091             CosNaming::NamingContext_var rootNC = CosNaming::NamingContext::_narrow(rootObj.in());
00092 
00093             if (CORBA::is_nil( rootNC.in() ) ) {
00094                 log(Warning) << "CTaskContext '"<< mtaskcontext->getName() << "' could not find CORBA Naming Service."<<endlog();
00095             } else {
00096                 // Nameserver found...
00097                 CosNaming::Name name;
00098                 name.length(2);
00099                 name[0].id = CORBA::string_dup("TaskContexts");
00100                 name[1].id = CORBA::string_dup( mtaskcontext->getName().c_str() );
00101                 try {
00102                     rootNC->unbind(name);
00103                     log(Info) << "Successfully removed CTaskContext '"<<mtaskcontext->getName()<<"' from CORBA Naming Service."<<endlog();
00104                 }
00105                 catch( CosNaming::NamingContext::NotFound ) {
00106                     log(Info) << "CTaskContext '"<< mtaskcontext->getName() << "' task was already unbound."<<endlog();
00107                 }
00108                 catch( ... ) {
00109                     log(Warning) << "CTaskContext '"<< mtaskcontext->getName() << "' unbinding failed."<<endlog();
00110                 }
00111             }
00112         } catch (...) {
00113             log(Warning) << "CTaskContext '"<< mtaskcontext->getName() << "' unbinding failed from CORBA Naming Service."<<endlog();
00114         }
00115     }
00116   }
00117 
00118 
00119 
00120 
00121     TaskContextServer::TaskContextServer(TaskContext* taskc, bool use_naming, bool require_name_service)
00122       : mtaskcontext(taskc), muse_naming(use_naming)
00123     {
00124         Logger::In in("TaskContextServer()");
00125         servers[taskc] = this;
00126         try {
00127             // Each server has its own POA.
00128             // The server's objects have their own poa as well.
00129             CORBA::Object_var poa_object =
00130                 orb->resolve_initial_references ("RootPOA");
00131             mpoa = PortableServer::POA::_narrow(poa_object);
00132             PortableServer::POAManager_var poa_manager =
00133                 mpoa->the_POAManager ();
00134 
00135             //poa = POAUtility::create_basic_POA( poa, poa_manager, taskc->getName().c_str(), 0, 1);
00136             //            poa_manager->activate ();
00137 
00138             // TODO : Use a better suited POA than create_basic_POA, use the 'session' or so type
00139             // But watch out: we need implicit activation, our you will get exceptions upon ->_this()
00140             // The POA for the Server's objects:
00141 //             PortableServer::POA_var objpoa = POAUtility::create_basic_POA(poa,
00142 //                                                               poa_manager,
00143 //                                                               std::string(taskc->getName() + "OBJPOA").c_str(),
00144 //                                                               0, 0); // Not persistent, allow implicit.
00145 
00146             // The servant : TODO : cleanup servant in destructor !
00147             RTT_corba_CTaskContext_i* serv;
00148             mtask_i = serv = new RTT_corba_CTaskContext_i( taskc, mpoa );
00149             mtask   = serv->activate_this();
00150 
00151             // Store reference to iors
00152             CORBA::String_var ior = orb->object_to_string( mtask.in() );
00153             iors[taskc] = std::string( ior.in() );
00154 
00155             if ( use_naming ) {
00156                 CORBA::Object_var rootObj;
00157                 CosNaming::NamingContext_var rootNC;
00158                 try {
00159                     rootObj = orb->resolve_initial_references("NameService");
00160                     rootNC = CosNaming::NamingContext::_narrow(rootObj);
00161                 } catch (...) {}
00162 
00163                 if (CORBA::is_nil( rootNC ) ) {
00164                     std::string  err("CTaskContext '" + taskc->getName() + "' could not find CORBA Naming Service.");
00165                     if (require_name_service) {
00166                         servers.erase(taskc);
00167                         log(Error) << err << endlog();
00168                         servers.erase(taskc);
00169                         throw IllegalServer(err);
00170                     }
00171                     else
00172                     {
00173                         log(Warning) << err << endlog();
00174                         log() <<"Writing IOR to 'std::cerr' and file '" << taskc->getName() <<".ior'"<<endlog();
00175 
00176                         // this part only publishes the IOR to a file.
00177                         CORBA::String_var ior = orb->object_to_string( mtask.in() );
00178                         std::cerr << ior.in() <<std::endl;
00179                         {
00180                             // write to a file as well.
00181                             std::string iorname( taskc->getName());
00182                             iorname += ".ior";
00183                             std::ofstream file_ior( iorname.c_str() );
00184                             file_ior << ior.in() <<std::endl;
00185                         }
00186                         return;
00187                     }
00188                 }
00189                 log(Info) << "CTaskContext '"<< taskc->getName() << "' found CORBA Naming Service."<<endlog();
00190                 // Nameserver found...
00191                 CosNaming::Name name;
00192                 name.length(1);
00193                 name[0].id = CORBA::string_dup("TaskContexts");
00194                 CosNaming::NamingContext_var controlNC;
00195                 try {
00196                     controlNC = rootNC->bind_new_context(name);
00197                 }
00198                 catch( CosNaming::NamingContext::AlreadyBound&) {
00199                     log(Debug) << "NamingContext 'TaskContexts' already bound to CORBA Naming Service."<<endlog();
00200                     // NOP.
00201                 }
00202 
00203                 name.length(2);
00204                 name[1].id = CORBA::string_dup( taskc->getName().c_str() );
00205                 try {
00206                     rootNC->bind(name, mtask );
00207                     log(Info) << "Successfully added CTaskContext '"<<taskc->getName()<<"' to CORBA Naming Service."<<endlog();
00208                 }
00209                 catch( CosNaming::NamingContext::AlreadyBound&) {
00210                     log(Warning) << "CTaskContext '"<< taskc->getName() << "' already bound to CORBA Naming Service."<<endlog();
00211                     log() <<"Trying to rebind...";
00212                     try {
00213                         rootNC->rebind(name, mtask);
00214                     } catch( ... ) {
00215                         log() << " failed!"<<endlog();
00216                         return;
00217                     }
00218                     log() << " done. New CTaskContext bound to Naming Service."<<endlog();
00219                 }
00220             } // use_naming
00221             else {
00222                 log(Info) <<"CTaskContext '"<< taskc->getName() << "' is not using the CORBA Naming Service."<<endlog();
00223                 log() <<"Writing IOR to 'std::cerr' and file '" << taskc->getName() <<".ior'"<<endlog();
00224 
00225                 // this part only publishes the IOR to a file.
00226                 CORBA::String_var ior = orb->object_to_string( mtask.in() );
00227                 std::cerr << ior.in() <<std::endl;
00228                 {
00229                     // write to a file as well.
00230                     std::string iorname( taskc->getName());
00231                     iorname += ".ior";
00232                     std::ofstream file_ior( iorname.c_str() );
00233                     file_ior << ior.in() <<std::endl;
00234                 }
00235                 return;
00236             }
00237         }
00238         catch (CORBA::Exception &e) {
00239             log(Error) << "CORBA exception raised!" << endlog();
00240             log() << CORBA_EXCEPTION_INFO(e) << endlog();
00241         }
00242 
00243     }
00244 
00245     void TaskContextServer::CleanupServers() {
00246         if ( !CORBA::is_nil(orb) && !is_shutdown) {
00247             log(Info) << "Cleaning up TaskContextServers..."<<endlog();
00248             while ( !servers.empty() ){
00249                 delete servers.begin()->second;
00250                 // note: destructor will self-erase from map !
00251             }
00252             CDataFlowInterface_i::clearServants();
00253             log() << "Cleanup done."<<endlog();
00254         }
00255     }
00256 
00257     void TaskContextServer::CleanupServer(TaskContext* c) {
00258         if ( !CORBA::is_nil(orb) ) {
00259             ServerMap::iterator it = servers.find(c);
00260             if ( it != servers.end() ){
00261                 log(Info) << "Cleaning up TaskContextServer for "<< c->getName()<<endlog();
00262                 CDataFlowInterface_i::deregisterServant(c->provides().get());
00263                 delete it->second; // destructor will do the rest.
00264                 // note: destructor will self-erase from map !
00265             }
00266         }
00267     }
00268 
00269     void TaskContextServer::ShutdownOrb(bool wait_for_completion)
00270     {
00271         Logger::In in("ShutdownOrb");
00272         DoShutdownOrb(wait_for_completion);
00273     }
00274 
00275     void TaskContextServer::DoShutdownOrb(bool wait_for_completion)
00276     {
00277         if (is_shutdown) {
00278             log(Info) << "Orb already down..."<<endlog();
00279             return;
00280         }
00281         if ( CORBA::is_nil(orb) ) {
00282             log(Error) << "Orb Shutdown...failed! Orb is nil." << endlog();
00283             return;
00284         }
00285 
00286         try {
00287             CleanupServers(); // can't do this after an orb->shutdown().
00288             log(Info) << "Orb Shutdown...";
00289             is_shutdown = true;
00290             if (wait_for_completion)
00291                 log(Info)<<"waiting..."<<endlog();
00292             orb->shutdown( wait_for_completion );
00293             log(Info) << "done." << endlog();
00294         }
00295         catch (CORBA::Exception &e) {
00296             log(Error) << "Orb Shutdown...failed! CORBA exception raised." << endlog();
00297             log() << CORBA_EXCEPTION_INFO(e) << endlog();
00298             return;
00299         }
00300     }
00301 
00302 
00303     void TaskContextServer::RunOrb()
00304     {
00305         if ( CORBA::is_nil(orb) ) {
00306             log(Error) << "RunOrb...failed! Orb is nil." << endlog();
00307             return;
00308         }
00309         try {
00310             log(Info) <<"Entering orb->run()."<<endlog();
00311             orb->run();
00312             log(Info) <<"Breaking out of orb->run()."<<endlog();
00313         }
00314         catch (CORBA::Exception &e) {
00315             log(Error) << "Orb Run : CORBA exception raised!" << endlog();
00316             log() << CORBA_EXCEPTION_INFO(e) << endlog();
00317         }
00318     }
00319 
00323     class OrbRunner
00324         : public Activity
00325     {
00326     public:
00327         OrbRunner()
00328             : Activity(RTT::os::LowestPriority)
00329         {}
00330         void loop()
00331         {
00332             Logger::In in("OrbRunner");
00333             TaskContextServer::RunOrb();
00334         }
00335 
00336         bool breakLoop()
00337         {
00338             return true;
00339         }
00340 
00341         void finalize()
00342         {
00343             Logger::In in("OrbRunner");
00344             log(Info) <<"Safely stopped."<<endlog();
00345         }
00346     };
00347 
00348     void TaskContextServer::ThreadOrb()
00349     {
00350         Logger::In in("ThreadOrb");
00351         if ( CORBA::is_nil(orb) ) {
00352             log(Error) << "ThreadOrb...failed! Orb is nil." << endlog();
00353             return;
00354         }
00355         if (orbrunner != 0) {
00356             log(Error) <<"Orb already running in a thread."<<endlog();
00357         } else {
00358             log(Info) <<"Starting Orb in a thread."<<endlog();
00359             orbrunner = new OrbRunner();
00360 
00361             orbrunner->start();
00362         }
00363     }
00364 
00365     void TaskContextServer::DestroyOrb()
00366     {
00367         Logger::In in("DestroyOrb");
00368         if ( CORBA::is_nil(orb) ) {
00369             log(Error) << "DestroyOrb...failed! Orb is nil." << endlog();
00370             return;
00371         }
00372 
00373         if (orbrunner) {
00374             orbrunner->stop();
00375             delete orbrunner;
00376             orbrunner = 0;
00377         }
00378 
00379         try {
00380             // Destroy the POA, waiting until the destruction terminates
00381             //poa->destroy (1, 1);
00382             CleanupServers();
00383             orb->destroy();
00384             rootPOA = 0;
00385             orb = 0;
00386             log(Info) <<"Orb destroyed."<<endlog();
00387         }
00388         catch (CORBA::Exception &e) {
00389             log(Error) << "Orb Destroy : CORBA exception raised!" << endlog();
00390             log() << CORBA_EXCEPTION_INFO(e) << endlog();
00391         }
00392 
00393     }
00394 
00395     TaskContextServer* TaskContextServer::Create(TaskContext* tc, bool use_naming, bool require_name_service) {
00396         if ( CORBA::is_nil(orb) )
00397             return 0;
00398 
00399         if ( servers.count(tc) ) {
00400             log(Debug) << "Returning existing TaskContextServer for "<<tc->getName()<<endlog();
00401             return servers.find(tc)->second;
00402         }
00403 
00404         // create new:
00405         log(Info) << "Creating new TaskContextServer for "<<tc->getName()<<endlog();
00406         try {
00407             TaskContextServer* cts = new TaskContextServer(tc, use_naming, require_name_service);
00408             return cts;
00409         }
00410         catch( IllegalServer& is ) {
00411             cerr << is.what() << endl;
00412         }
00413         return 0;
00414     }
00415 
00416     CTaskContext_ptr TaskContextServer::CreateServer(TaskContext* tc, bool use_naming, bool require_name_service) {
00417         if ( CORBA::is_nil(orb) )
00418             return CTaskContext::_nil();
00419 
00420         if ( servers.count(tc) ) {
00421             log(Debug) << "Returning existing TaskContextServer for "<<tc->getName()<<endlog();
00422             return CTaskContext::_duplicate( servers.find(tc)->second->server() );
00423         }
00424 
00425         for (TaskContextProxy::PMap::iterator it = TaskContextProxy::proxies.begin(); it != TaskContextProxy::proxies.end(); ++it)
00426             if ( (it->first) == tc ) {
00427                 log(Debug) << "Returning server of Proxy for "<<tc->getName()<<endlog();
00428                 return CTaskContext::_duplicate(it->second);
00429             }
00430 
00431         // create new:
00432         log(Info) << "Creating new TaskContextServer for "<<tc->getName()<<endlog();
00433         try {
00434             TaskContextServer* cts = new TaskContextServer(tc, use_naming, require_name_service);
00435             return CTaskContext::_duplicate( cts->server() );
00436         }
00437         catch( IllegalServer& is ) {
00438             cerr << is.what() << endl;
00439         }
00440         return CTaskContext::_nil();
00441     }
00442 
00443 
00444     corba::CTaskContext_ptr TaskContextServer::server() const
00445     {
00446         // we're not a factory function, so we don't _duplicate.
00447         return mtask.in();
00448     }
00449 
00450     std::string TaskContextServer::getIOR(TaskContext* tc)
00451     {
00452         IorMap::const_iterator it = iors.find(tc);
00453         if (it != iors.end())
00454             return it->second;
00455 
00456         return std::string("");
00457     }
00458 
00459 }}


rtt
Author(s): RTT Developers
autogenerated on Thu Jan 2 2014 11:35:39