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