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, const anna::diameter::comm::OriginHost *myNode)
  28 noexcept(false) {
  29   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventRequest", ANNA_FILE_LOCATION));
  30
  31   // Protection:
  32   if (!myNode) return;
  33
  34   // Performance stats:
  35   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
  36   anna::diameter::codec::Engine *codecEngine = myNode->getCodecEngine();
  37
  38   // CommandId:
  39   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
  40   LOGDEBUG
  41   (
  42     std::string msg = "Request received: ";
  43     msg += anna::diameter::functions::commandIdAsPairString(cid);
  44     msg += " | DiameterServer: ";
  45     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
  46     msg += " | EventTime: ";
  47     msg += anna::time::functions::currentTimeAsString();
  48     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  49   );
  50
  51   // Write reception
  52   if(myNode->logEnabled()) myNode->writeLogFile(message, "recvfc", serverSession->asString());
  53
  54   // If no answer is programmed and entity is configured, the failed request would be forwarded even being wrong (delegates at the end point)
  55   int code = cid.first;
  56   anna::diameter::codec::Message *programmed_answer = (const_cast<anna::diameter::comm::OriginHost*>(myNode))->getReactingAnswers()->getMessage(code);
  57
  58   bool programmed = (programmed_answer != NULL);
  59
  60   anna::diameter::comm::Entity *entity = myNode->getEntity();
  61   if(!programmed && entity) {  // forward condition (no programmed answer + entity available)
  62     anna::diameter::comm::Message *msg = (const_cast<anna::diameter::comm::OriginHost*>(myNode))->createCommMessage();
  63     msg->forwardEndToEnd(); // end-to-end will be kept
  64     msg->setBody(message);
  65     msg->setRequestServerSessionKey(serverSession->getKey());
  66     bool success = entity->send(msg);
  67
  68     // Detailed log:
  69     if(myNode->logEnabled()) {
  70       anna::diameter::comm::Server *usedServer = entity->getLastUsedResource();
  71       anna::diameter::comm::ClientSession *usedClientSession = usedServer ? usedServer->getLastUsedResource() : NULL;
  72       std::string detail = usedClientSession ? usedClientSession->asString() : "[null client session]"; // esto no deberia ocurrir
  73       myNode->writeLogFile(message, (success ? "fwd2e" : "fwd2eError"), detail); // forwarded
  74     }
  75
  76
  77     // Testing:
  78     anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
  79
  80     return;
  81   }
  82
  83   // Error analisys:
  84   bool analysisOK = true; // by default
  85   anna::diameter::codec::Message *answer_message = NULL;
  86   anna::diameter::codec::Message codecMsg;
  87   anna::diameter::codec::Message codecAnsMsg;
  88
  89   CommandLine& cl(anna::CommandLine::instantiate());
  90   if(!cl.exists("ignoreErrors")) {  // Error analysis
  91     answer_message = (anna::diameter::codec::Message *)&codecAnsMsg;
  92     answer_message->clear();
  93
  94     // Decode
  95     try { codecMsg.decode(message, answer_message); } catch(anna::RuntimeException &ex) { ex.trace(); }
  96
  97     answer_message->setStandardToAnswer(codecMsg, myNode->getCommEngine()->getOriginHostName(), myNode->getCommEngine()->getOriginRealmName());
  98     analysisOK = (answer_message->getResultCode() == anna::diameter::helpers::base::AVPVALUES__Result_Code::DIAMETER_SUCCESS);
  99   }
 100
 101   // Programmed answer only when all is ok
 102   if(analysisOK) {
 103     if(programmed) {
 104       answer_message = programmed_answer;
 105       // Prepare answer:
 106       my_app.getCommunicator()->prepareAnswer(answer_message, message);
 107     } else {
 108
 109       // Testing:
 110       anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 111
 112       return; // nothing done
 113     }
 114   }
 115
 116   anna::diameter::codec::Engine::ValidationMode::_v backupVM = codecEngine->getValidationMode();
 117
 118   if(!analysisOK)
 119     codecEngine->setValidationMode(anna::diameter::codec::Engine::ValidationMode::Never);
 120
 121   anna::diameter::comm::Message *msg;
 122   try {
 123     msg = (const_cast<anna::diameter::comm::OriginHost*>(myNode))->createCommMessage();
 124     msg->setBody(answer_message->code());
 125     /* response = NULL =*/serverSession->send(msg);
 126
 127     if(myNode->logEnabled()) myNode->writeLogFile(*answer_message, "sent2c", serverSession->asString());
 128   } catch(anna::RuntimeException &ex) {
 129     ex.trace();
 130     if(myNode->logEnabled()) myNode->writeLogFile(*answer_message, "send2cError", serverSession->asString());
 131   }
 132
 133   // release msg
 134   (const_cast<anna::diameter::comm::OriginHost*>(myNode))->releaseCommMessage(msg);
 135
 136   // Restore validation mode
 137   codecEngine->setValidationMode(backupVM);
 138
 139   // Pop front the reacting answer:
 140   if(analysisOK && programmed) (const_cast<anna::diameter::comm::OriginHost*>(myNode))->getReactingAnswers()->nextMessage(code);
 141
 142   // Testing:
 143   anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 144 }
 145
 146 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response, const anna::diameter::comm::OriginHost *myNode)
 147 noexcept(false) {
 148   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 149   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 150   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 151   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 152   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 153   const anna::DataBlock* message = response.getMessage();
 154   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 155   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 156   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 157   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 158
 159   // CommandId:
 160   anna::diameter::CommandId request_cid = request->getCommandId();
 161   LOGDEBUG
 162   (
 163     std::string msg = "Response received for original diameter request: ";
 164     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 165     msg += " | Response: ";
 166     msg += response.asString();
 167     msg += " | LocalServer: ";
 168     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 169     msg += " | EventTime: ";
 170     msg += anna::time::functions::currentTimeAsString();
 171     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 172   );
 173
 174   // Protection:
 175   if (!myNode) return;
 176
 177   if(isUnavailable) {
 178     //if (isApplicationMessage)
 179     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 180   }
 181
 182   if(contextExpired) {
 183     //if (isApplicationMessage)
 184     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 185
 186     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 187       if(myNode->logEnabled()) myNode->writeLogFile(*request, "req2c-expired", serverSession->asString());
 188     }
 189   }
 190
 191   if(isOK) {
 192     LOGDEBUG(
 193       std::string msg = "Received response for diameter message:  ";
 194       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 195       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 196     );
 197
 198     // Write reception
 199     if(myNode->logEnabled()) myNode->writeLogFile(*message, "recvfc", serverSession->asString());
 200
 201     // This is not very usual, but answers could arrive from clients:
 202     anna::diameter::comm::Entity *entity = myNode->getEntity();
 203
 204     if(entity) {
 205       anna::diameter::comm::ClientSession *usedClientSession = myNode->getCommEngine()->findClientSession(request->getRequestClientSessionKey());
 206       std::string detail;
 207
 208       if(myNode->logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "[null client session]";  // this should not happen
 209       anna::diameter::comm::Message *msg;
 210
 211       try {
 212         msg = (const_cast<anna::diameter::comm::OriginHost*>(myNode))->createCommMessage();
 213         msg->forwardEndToEnd(); // end-to-end will be kept
 214         msg->setBody(*message);
 215
 216         // Metodo 1:
 217         if(usedClientSession) /* response = NULL =*/usedClientSession->send(msg);
 218
 219         // Metodo 2:
 220         //msg->setRequestClientSessionKey(request->getRequestClientSessionKey());
 221         //bool success = entity->send(msg);
 222
 223         if(myNode->logEnabled()) myNode->writeLogFile(*message, "fwd2e", detail);  // forwarded
 224       } catch(anna::RuntimeException &ex) {
 225         ex.trace();
 226         if(myNode->logEnabled()) myNode->writeLogFile(*message, "fwd2eError", detail);  // forwarded
 227       }
 228
 229       // release msgs
 230       (const_cast<anna::diameter::comm::OriginHost*>(myNode))->releaseCommMessage(msg);
 231       (const_cast<anna::diameter::comm::OriginHost*>(myNode))->releaseCommMessage(request);
 232     }
 233   }
 234
 235   // Testing:
 236   if(isOK) anna::testing::TestManager::instantiate().receiveDiameterMessage(*message, serverSession);
 237 }
 238
 239 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message, const anna::diameter::comm::OriginHost *myNode)
 240 noexcept(false) {
 241   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 242   // Performance stats:
 243   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 244   // CommandId:
 245   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 246   LOGDEBUG
 247   (
 248     std::string msg = "Out-of-context response received from client: ";
 249     msg += anna::diameter::functions::commandIdAsPairString(cid);
 250     msg += " | DiameterServer: ";
 251     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 252     msg += " | EventTime: ";
 253     msg += anna::time::functions::currentTimeAsString();
 254     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 255   );
 256
 257   // Protection:
 258   if (!myNode) return;
 259
 260   if(myNode->logEnabled()) myNode->writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 261 }
 262
 263 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message, const anna::diameter::comm::OriginHost *myNode)
 264 noexcept(false) {
 265   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 266   // Performance stats:
 267   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 268   // CommandId:
 269   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 270   LOGDEBUG
 271   (
 272     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 273     msg += anna::diameter::functions::commandIdAsPairString(cid);
 274     msg += " | DiameterServer: ";
 275     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 276     msg += " | EventTime: ";
 277     msg += anna::time::functions::currentTimeAsString();
 278     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 279   );
 280
 281   // Protection:
 282   if (!myNode) return;
 283
 284   // Write reception
 285   if(myNode->logEnabled()) myNode->writeLogFile(message, "recvfc", serverSession->asString());
 286
 287   // Testing:
 288   anna::testing::TestManager::instantiate().receiveDiameterMessage(message, serverSession);
 289 }