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());
  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); // 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 = my_app.createCodecMessage();
  71
  72   if(!cl.exists("ignoreErrors")) {  // Error analysis
  73     answer_message = my_app.createCodecMessage();
  74     answer_message->clear();
  75
  76     // Decode
  77     try { codecMsg->decode(message, answer_message); } catch(anna::RuntimeException &ex) { ex.trace(); }
  78
  79     answer_message->setStandardToAnswer(*codecMsg, my_app.getMyDiameterEngine()->getHost(), my_app.getMyDiameterEngine()->getRealm());
  80     my_app.releaseCodecMessage(codecMsg);
  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 *codecEngine = (anna::functions::component <anna::diameter::codec::Engine> (ANNA_FILE_LOCATION));
  94   anna::diameter::codec::Engine::ValidationMode::_v backupVM = codecEngine->getValidationMode();
  95
  96   if(!analysisOK)
  97     codecEngine->setValidationMode(anna::diameter::codec::Engine::ValidationMode::Never);
  98
  99   try {
 100     anna::diameter::comm::Message *msg = my_app.createCommMessage();
 101     msg->setBody(answer_message->code());
 102     /* response = NULL =*/serverSession->send(msg);
 103     my_app.releaseCommMessage(msg);
 104
 105     if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "sent2c", serverSession->asString());
 106   } catch(anna::RuntimeException &ex) {
 107     ex.trace();
 108     if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "send2cError", serverSession->asString());
 109   }
 110
 111   // Release auxiliary codec message
 112   my_app.releaseCodecMessage(answer_message);
 113
 114   // Restore validation mode
 115   codecEngine->setValidationMode(backupVM);
 116
 117   // Pop front the reacting answer:
 118   if(analysisOK && programmed) a_reactingAnswers.nextMessage(code);
 119 }
 120
 121 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)
 122 throw(anna::RuntimeException) {
 123   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 124   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 125   CommandLine& cl(anna::CommandLine::instantiate());
 126   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 127   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 128   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 129   const anna::DataBlock* message = response.getMessage();
 130   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 131   bool isBindResponse = (code == anna::diameter::comm::ClassCode::Bind);
 132   bool isApplicationMessage = (code == anna::diameter::comm::ClassCode::ApplicationMessage);
 133   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 134   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 135   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 136   // CommandId:
 137   anna::diameter::CommandId request_cid = request->getCommandId();
 138   LOGDEBUG
 139   (
 140     std::string msg = "Response received for original diameter request: ";
 141     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 142     msg += " | Response: ";
 143     msg += response.asString();
 144     msg += " | LocalServer: ";
 145     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 146     msg += " | EventTime: ";
 147     msg += anna::time::functions::currentTimeAsString();
 148     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 149   );
 150
 151   if(isUnavailable) {
 152     //if (isApplicationMessage)
 153     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 154   }
 155
 156   if(contextExpired) {
 157     //if (isApplicationMessage)
 158     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 159
 160     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 161       if(my_app.logEnabled()) my_app.writeLogFile(*request, "req2c-expired", serverSession->asString());
 162     }
 163   }
 164
 165   if(isOK) {
 166     LOGDEBUG(
 167       std::string msg = "Received response for diameter message:  ";
 168       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 169       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 170     );
 171
 172     // Write reception
 173     if(my_app.logEnabled()) my_app.writeLogFile(*message, "recvfc", serverSession->asString());
 174
 175     // This is not very usual, but answers could arrive from clients:
 176     anna::diameter::comm::Entity *entity = my_app.getEntity();
 177
 178     if(entity) {
 179       anna::diameter::comm::ClientSession *usedClientSession = my_app.getMyDiameterEngine()->findClientSession(request->getRequestClientSessionKey());
 180       std::string detail;
 181
 182       if(my_app.logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "<null client session>";  // this should not happen
 183
 184       try {
 185         anna::diameter::comm::Message *msg = my_app.createCommMessage();
 186         msg->updateEndToEnd(false); // end-to-end will be kept
 187         msg->setBody(*message);
 188
 189         // Metodo 1:
 190         if(usedClientSession) /* response = NULL =*/usedClientSession->send(msg);
 191
 192         // Metodo 2:
 193         //msg->setRequestClientSessionKey(request->getRequestClientSessionKey());
 194         //bool success = entity->send(msg);
 195
 196         my_app.releaseCommMessage(msg);
 197         my_app.releaseCommMessage(request);
 198
 199         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2e", detail);  // forwarded
 200       } catch(anna::RuntimeException &ex) {
 201         ex.trace();
 202         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2eError", detail);  // forwarded
 203       }
 204     }
 205   }
 206 }
 207
 208 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 209 throw(anna::RuntimeException) {
 210   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 211   // Performance stats:
 212   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 213   // CommandId:
 214   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 215   LOGDEBUG
 216   (
 217     std::string msg = "Out-of-context response received from client: ";
 218     msg += anna::diameter::functions::commandIdAsPairString(cid);
 219     msg += " | DiameterServer: ";
 220     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 221     msg += " | EventTime: ";
 222     msg += anna::time::functions::currentTimeAsString();
 223     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 224   );
 225
 226   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 227 }
 228
 229 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 230 throw(anna::RuntimeException) {
 231   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 232   // Performance stats:
 233   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 234   // CommandId:
 235   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 236   LOGDEBUG
 237   (
 238     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 239     msg += anna::diameter::functions::commandIdAsPairString(cid);
 240     msg += " | DiameterServer: ";
 241     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 242     msg += " | EventTime: ";
 243     msg += anna::time::functions::currentTimeAsString();
 244     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 245   );
 246
 247   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc", serverSession->asString());
 248 }