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
  16 // Process
  17 #include "MyLocalServer.hpp"
  18 #include "Launcher.hpp"
  19
  20 // Auxiliary message for sendings
  21 extern anna::diameter::comm::Message G_commMsgSent2c, G_commMsgFwd2e;
  22 extern anna::diameter::codec::Message G_codecMsg, G_codecAnsMsg;
  23 extern anna::Recycler<anna::diameter::comm::Message> G_commMessages; // create on requests forwards without programmed answer / release in answers forward
  24
  25
  26 void MyLocalServer::eventRequest(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
  27 throw(anna::RuntimeException) {
  28   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventRequest", ANNA_FILE_LOCATION));
  29   // Performance stats:
  30   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
  31   CommandLine& cl(anna::CommandLine::instantiate());
  32   // CommandId:
  33   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
  34   LOGDEBUG
  35   (
  36     std::string msg = "Request received: ";
  37     msg += anna::diameter::functions::commandIdAsPairString(cid);
  38     msg += " | DiameterServer: ";
  39     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
  40     msg += " | EventTime: ";
  41     msg += anna::time::functions::currentTimeAsString();
  42     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  43   );
  44
  45   // Write reception
  46   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc", serverSession->asString());
  47
  48   // If no answer is programmed and entity is configured, the failed request would be forwarded even being wrong (delegates at the end point)
  49   int code = cid.first;
  50   anna::diameter::codec::Message *programmed_answer = a_reactingAnswers.getMessage(code);
  51   bool programmed = (programmed_answer != NULL);
  52
  53   anna::diameter::comm::Entity *entity = my_app.getEntity();
  54   if(!programmed && entity) {  // forward condition (no programmed answer + entity available)
  55     anna::diameter::comm::Message *msg = G_commMessages.create();
  56     msg->updateEndToEnd(false); // end-to-end will be kept
  57     msg->setBody(message);
  58     msg->setRequestServerSessionKey(serverSession->getKey());
  59     bool success = entity->send(msg, cl.exists("balance"));
  60
  61     // Detailed log:
  62     if(my_app.logEnabled()) {
  63       anna::diameter::comm::Server *usedServer = entity->getLastUsedResource();
  64       anna::diameter::comm::ClientSession *usedClientSession = usedServer ? usedServer->getLastUsedResource() : NULL;
  65       std::string detail = usedClientSession ? usedClientSession->asString() : "<null client session>"; // esto no deberia ocurrir
  66       my_app.writeLogFile(message, (success ? "fwd2e" : "fwd2eError"), detail); // forwarded
  67     }
  68
  69     return;
  70   }
  71
  72   // Error analisys:
  73   bool analysisOK = true; // by default
  74   anna::diameter::codec::Message *answer_message = NULL;
  75
  76   if(!cl.exists("ignoreErrors")) {  // Error analysis
  77     answer_message = (anna::diameter::codec::Message*) & G_codecAnsMsg;
  78     answer_message->clear();
  79
  80     // Decode
  81     try { G_codecMsg.decode(message, answer_message); } catch(anna::RuntimeException &ex) { ex.trace(); }
  82
  83     answer_message->setStandardToAnswer(G_codecMsg, my_app.getMyDiameterEngine()->getHost(), my_app.getMyDiameterEngine()->getRealm());
  84     analysisOK = (answer_message->getResultCode() == anna::diameter::helpers::base::AVPVALUES__Result_Code::DIAMETER_SUCCESS);
  85   }
  86
  87   // Programmed answer only when all is ok
  88   if(analysisOK) {
  89     if(programmed) {
  90       answer_message = programmed_answer;
  91       // Prepare answer:
  92       my_app.getCommunicator()->prepareAnswer(answer_message, message);
  93     } else return; // nothing done
  94   }
  95
  96   anna::diameter::codec::Engine *codecEngine = (anna::functions::component <anna::diameter::codec::Engine> (ANNA_FILE_LOCATION));
  97   anna::diameter::codec::Engine::ValidationMode::_v backupVM = codecEngine->getValidationMode();
  98
  99   if(!analysisOK)
 100     codecEngine->setValidationMode(anna::diameter::codec::Engine::ValidationMode::Never);
 101
 102   try {
 103     G_commMsgSent2c.setBody(answer_message->code());
 104     /* response = NULL =*/serverSession->send(&G_commMsgSent2c);
 105
 106     if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "sent2c", serverSession->asString());
 107   } catch(anna::RuntimeException &ex) {
 108     ex.trace();
 109
 110     if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "send2cError", serverSession->asString());
 111   }
 112
 113   // Restore validation mode
 114   codecEngine->setValidationMode(backupVM);
 115
 116   // Pop front the reacting answer:
 117   if(analysisOK && programmed) a_reactingAnswers.nextMessage(code);
 118 }
 119
 120 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)
 121 throw(anna::RuntimeException) {
 122   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 123   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 124   CommandLine& cl(anna::CommandLine::instantiate());
 125   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 126   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 127   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 128   const anna::DataBlock* message = response.getMessage();
 129   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 130   bool isBindResponse = (code == anna::diameter::comm::ClassCode::Bind);
 131   bool isApplicationMessage = (code == anna::diameter::comm::ClassCode::ApplicationMessage);
 132   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 133   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 134   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 135   // CommandId:
 136   anna::diameter::CommandId request_cid = request->getCommandId();
 137   LOGDEBUG
 138   (
 139     std::string msg = "Response received for original diameter request: ";
 140     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 141     msg += " | Response: ";
 142     msg += response.asString();
 143     msg += " | LocalServer: ";
 144     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 145     msg += " | EventTime: ";
 146     msg += anna::time::functions::currentTimeAsString();
 147     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 148   );
 149
 150   if(isUnavailable) {
 151     //if (isApplicationMessage)
 152     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 153   }
 154
 155   if(contextExpired) {
 156     //if (isApplicationMessage)
 157     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 158
 159     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 160       if(my_app.logEnabled()) my_app.writeLogFile(*request, "req2c-expired", serverSession->asString());
 161     }
 162   }
 163
 164   if(isOK) {
 165     LOGDEBUG(
 166       std::string msg = "Received response for diameter message:  ";
 167       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 168       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 169     );
 170
 171     // Write reception
 172     if(my_app.logEnabled()) my_app.writeLogFile(*message, "recvfc", serverSession->asString());
 173
 174     // This is not very usual, but answers could arrive from clients:
 175     anna::diameter::comm::Entity *entity = my_app.getEntity();
 176
 177     if(entity) {
 178       anna::diameter::comm::ClientSession *usedClientSession = my_app.getMyDiameterEngine()->findClientSession(request->getRequestClientSessionKey());
 179       std::string detail;
 180
 181       if(my_app.logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "<null client session>";  // esto no deberia ocurrir
 182
 183       try {
 184         G_commMsgFwd2e.updateEndToEnd(false); // end-to-end will be kept
 185         G_commMsgFwd2e.setBody(*message);
 186
 187         // Metodo 1:
 188         if(usedClientSession) /* response = NULL =*/usedClientSession->send(&G_commMsgFwd2e);
 189
 190         // Metodo 2:
 191         //G_commMsgFwd2e.setRequestClientSessionKey(request->getRequestClientSessionKey());
 192         //bool success = entity->send(G_commMsgFwd2e);
 193         G_commMessages.release(request);
 194
 195         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2e", detail);  // forwarded
 196       } catch(anna::RuntimeException &ex) {
 197         ex.trace();
 198
 199         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2eError", detail);  // forwarded
 200       }
 201     }
 202   }
 203 }
 204
 205 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 206 throw(anna::RuntimeException) {
 207   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 208   // Performance stats:
 209   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 210   // CommandId:
 211   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 212   LOGDEBUG
 213   (
 214     std::string msg = "Out-of-context response received from client: ";
 215     msg += anna::diameter::functions::commandIdAsPairString(cid);
 216     msg += " | DiameterServer: ";
 217     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 218     msg += " | EventTime: ";
 219     msg += anna::time::functions::currentTimeAsString();
 220     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 221   );
 222
 223   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 224 }
 225
 226 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 227 throw(anna::RuntimeException) {
 228   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 229   // Performance stats:
 230   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 231   // CommandId:
 232   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 233   LOGDEBUG
 234   (
 235     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 236     msg += anna::diameter::functions::commandIdAsPairString(cid);
 237     msg += " | DiameterServer: ";
 238     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 239     msg += " | EventTime: ";
 240     msg += anna::time::functions::currentTimeAsString();
 241     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 242   );
 243
 244   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc", serverSession->asString());
 245 }