example/diameter/launcher/MyLocalServer.cpp

   1 // ANNA - Anna is Not Nothingness Anymore                                                         //
   2 //                                                                                                //
   3 // (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
   4 //                                                                                                //
   5 // See project site at http://redmine.teslayout.com/projects/anna-suite                           //
   6 // See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
   7
   8
   9 // Project
  10 #include <anna/core/core.hpp>
  11 #include <anna/diameter/functions.hpp>
  12 #include <anna/time/functions.hpp>
  13 #include <anna/diameter/codec/Engine.hpp>
  14 #include <anna/diameter.comm/Response.hpp>
  15 #include <anna/diameter.comm/ClientSession.hpp>
  16 #include <anna/diameter.comm/Server.hpp>
  17 #include <anna/diameter.comm/OriginHost.hpp>
  18
  19 // Process
  20 #include <MyLocalServer.hpp>
  21 #include <MyDiameterEngine.hpp>
  22 #include <MyDiameterEntity.hpp>
  23 #include <Launcher.hpp>
  24 #include <anna/testing/TestManager.hpp>
  25
  26
  27 void MyLocalServer::eventRequest(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
  28 throw(anna::RuntimeException) {
  29   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventRequest", ANNA_FILE_LOCATION));
  30   // Performance stats:
  31   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
  32   anna::diameter::comm::OriginHost *my_node = my_app.getOriginHost(getEngine()->getOriginHostName());
  33   anna::diameter::codec::Engine *codecEngine = my_node->getCodecEngine();
  34
  35   // CommandId:
  36   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
  37   LOGDEBUG
  38   (
  39     std::string msg = "Request received: ";
  40     msg += anna::diameter::functions::commandIdAsPairString(cid);
  41     msg += " | DiameterServer: ";
  42     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
  43     msg += " | EventTime: ";
  44     msg += anna::time::functions::currentTimeAsString();
  45     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  46   );
  47
  48   // Write reception
  49   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc", serverSession->asString());
  50
  51   // If no answer is programmed and entity is configured, the failed request would be forwarded even being wrong (delegates at the end point)
  52   int code = cid.first;
  53   anna::diameter::codec::Message *programmed_answer = a_reactingAnswers.getMessage(code);
  54   bool programmed = (programmed_answer != NULL);
  55
  56   anna::diameter::comm::Entity *entity = my_node->getEntity();
  57   if(!programmed && entity) {  // forward condition (no programmed answer + entity available)
  58     anna::diameter::comm::Message *msg = my_node->createCommMessage();
  59     msg->forwardEndToEnd(); // end-to-end will be kept
  60     msg->setBody(message);
  61     msg->setRequestServerSessionKey(serverSession->getKey());
  62     bool success = entity->send(msg);
  63
  64     // Detailed log:
  65     if(my_node->logEnabled()) {
  66       anna::diameter::comm::Server *usedServer = entity->getLastUsedResource();
  67       anna::diameter::comm::ClientSession *usedClientSession = usedServer ? usedServer->getLastUsedResource() : NULL;
  68       std::string detail = usedClientSession ? usedClientSession->asString() : "<null client session>"; // esto no deberia ocurrir
  69       my_node->writeLogFile(message, (success ? "fwd2e" : "fwd2eError"), detail); // forwarded
  70     }
  71
  72
  73     // Testing:
  74     anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
  75
  76     return;
  77   }
  78
  79   // Error analisys:
  80   bool analysisOK = true; // by default
  81   anna::diameter::codec::Message *answer_message = NULL;
  82   anna::diameter::codec::Message codecMsg;
  83   anna::diameter::codec::Message codecAnsMsg;
  84
  85   CommandLine& cl(anna::CommandLine::instantiate());
  86   if(!cl.exists("ignoreErrors")) {  // Error analysis
  87     answer_message = (anna::diameter::codec::Message *)&codecAnsMsg;
  88     answer_message->clear();
  89
  90     // Decode
  91     try { codecMsg.decode(message, answer_message); } catch(anna::RuntimeException &ex) { ex.trace(); }
  92
  93     answer_message->setStandardToAnswer(codecMsg, my_node->getCommEngine()->getOriginHostName(), my_node->getCommEngine()->getOriginRealmName());
  94     analysisOK = (answer_message->getResultCode() == anna::diameter::helpers::base::AVPVALUES__Result_Code::DIAMETER_SUCCESS);
  95   }
  96
  97   // Programmed answer only when all is ok
  98   if(analysisOK) {
  99     if(programmed) {
 100       answer_message = programmed_answer;
 101       // Prepare answer:
 102       my_app.getCommunicator()->prepareAnswer(answer_message, message);
 103     } else {
 104
 105       // Testing:
 106       anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 107
 108       return; // nothing done
 109     }
 110   }
 111
 112   anna::diameter::codec::Engine::ValidationMode::_v backupVM = codecEngine->getValidationMode();
 113
 114   if(!analysisOK)
 115     codecEngine->setValidationMode(anna::diameter::codec::Engine::ValidationMode::Never);
 116
 117   anna::diameter::comm::Message *msg;
 118   try {
 119     msg = my_node->createCommMessage();
 120     msg->setBody(answer_message->code());
 121     /* response = NULL =*/serverSession->send(msg);
 122
 123     if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "sent2c", serverSession->asString());
 124   } catch(anna::RuntimeException &ex) {
 125     ex.trace();
 126     if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "send2cError", serverSession->asString());
 127   }
 128
 129   // release msg
 130   my_node->releaseCommMessage(msg);
 131
 132   // Restore validation mode
 133   codecEngine->setValidationMode(backupVM);
 134
 135   // Pop front the reacting answer:
 136   if(analysisOK && programmed) a_reactingAnswers.nextMessage(code);
 137
 138   // Testing:
 139   anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 140 }
 141
 142 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)
 143 throw(anna::RuntimeException) {
 144   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 145   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 146   anna::diameter::comm::OriginHost * my_node = my_app.getOriginHost(getEngine()->getOriginHostName());
 147   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 148   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 149   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 150   const anna::DataBlock* message = response.getMessage();
 151   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 152   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 153   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 154   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 155
 156   // CommandId:
 157   anna::diameter::CommandId request_cid = request->getCommandId();
 158   LOGDEBUG
 159   (
 160     std::string msg = "Response received for original diameter request: ";
 161     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 162     msg += " | Response: ";
 163     msg += response.asString();
 164     msg += " | LocalServer: ";
 165     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 166     msg += " | EventTime: ";
 167     msg += anna::time::functions::currentTimeAsString();
 168     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 169   );
 170
 171   if(isUnavailable) {
 172     //if (isApplicationMessage)
 173     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 174   }
 175
 176   if(contextExpired) {
 177     //if (isApplicationMessage)
 178     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 179
 180     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 181       if(my_node->logEnabled()) my_node->writeLogFile(*request, "req2c-expired", serverSession->asString());
 182     }
 183   }
 184
 185   if(isOK) {
 186     LOGDEBUG(
 187       std::string msg = "Received response for diameter message:  ";
 188       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 189       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 190     );
 191
 192     // Write reception
 193     if(my_node->logEnabled()) my_node->writeLogFile(*message, "recvfc", serverSession->asString());
 194
 195     // This is not very usual, but answers could arrive from clients:
 196     anna::diameter::comm::Entity *entity = my_node->getEntity();
 197
 198     if(entity) {
 199       anna::diameter::comm::ClientSession *usedClientSession = my_node->getCommEngine()->findClientSession(request->getRequestClientSessionKey());
 200       std::string detail;
 201
 202       if(my_node->logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "<null client session>";  // this should not happen
 203       anna::diameter::comm::Message *msg;
 204
 205       try {
 206         msg = my_node->createCommMessage();
 207         msg->forwardEndToEnd(); // end-to-end will be kept
 208         msg->setBody(*message);
 209
 210         // Metodo 1:
 211         if(usedClientSession) /* response = NULL =*/usedClientSession->send(msg);
 212
 213         // Metodo 2:
 214         //msg->setRequestClientSessionKey(request->getRequestClientSessionKey());
 215         //bool success = entity->send(msg);
 216
 217         if(my_node->logEnabled()) my_node->writeLogFile(*message, "fwd2e", detail);  // forwarded
 218       } catch(anna::RuntimeException &ex) {
 219         ex.trace();
 220         if(my_node->logEnabled()) my_node->writeLogFile(*message, "fwd2eError", detail);  // forwarded
 221       }
 222
 223       // release msgs
 224       my_node->releaseCommMessage(msg);
 225       my_node->releaseCommMessage(request);
 226     }
 227   }
 228
 229   // Testing:
 230   if(isOK) anna::testing::TestManager::instantiate().receiveDiameterMessage(*message, serverSession);
 231 }
 232
 233 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 234 throw(anna::RuntimeException) {
 235   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 236   // Performance stats:
 237   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 238   anna::diameter::comm::OriginHost *my_node = my_app.getOriginHost(getEngine()->getOriginHostName());
 239   // CommandId:
 240   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 241   LOGDEBUG
 242   (
 243     std::string msg = "Out-of-context response received from client: ";
 244     msg += anna::diameter::functions::commandIdAsPairString(cid);
 245     msg += " | DiameterServer: ";
 246     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 247     msg += " | EventTime: ";
 248     msg += anna::time::functions::currentTimeAsString();
 249     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 250   );
 251
 252   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 253 }
 254
 255 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 256 throw(anna::RuntimeException) {
 257   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 258   // Performance stats:
 259   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 260   anna::diameter::comm::OriginHost *my_node = my_app.getOriginHost(getEngine()->getOriginHostName());
 261   // CommandId:
 262   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 263   LOGDEBUG
 264   (
 265     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 266     msg += anna::diameter::functions::commandIdAsPairString(cid);
 267     msg += " | DiameterServer: ";
 268     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 269     msg += " | EventTime: ";
 270     msg += anna::time::functions::currentTimeAsString();
 271     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 272   );
 273
 274   // Write reception
 275   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc", serverSession->asString());
 276
 277   // Testing:
 278   anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 279 }