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