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
 109     if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "send2cError", serverSession->asString());
 110   }
 111
 112   // Release auxiliary codec message
 113   my_app.releaseCodecMessage(answer_message);
 114
 115   // Restore validation mode
 116   codecEngine->setValidationMode(backupVM);
 117
 118   // Pop front the reacting answer:
 119   if(analysisOK && programmed) a_reactingAnswers.nextMessage(code);
 120 }
 121
 122 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)
 123 throw(anna::RuntimeException) {
 124   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 125   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 126   CommandLine& cl(anna::CommandLine::instantiate());
 127   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 128   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 129   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 130   const anna::DataBlock* message = response.getMessage();
 131   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 132   bool isBindResponse = (code == anna::diameter::comm::ClassCode::Bind);
 133   bool isApplicationMessage = (code == anna::diameter::comm::ClassCode::ApplicationMessage);
 134   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 135   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 136   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 137   // CommandId:
 138   anna::diameter::CommandId request_cid = request->getCommandId();
 139   LOGDEBUG
 140   (
 141     std::string msg = "Response received for original diameter request: ";
 142     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 143     msg += " | Response: ";
 144     msg += response.asString();
 145     msg += " | LocalServer: ";
 146     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 147     msg += " | EventTime: ";
 148     msg += anna::time::functions::currentTimeAsString();
 149     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 150   );
 151
 152   if(isUnavailable) {
 153     //if (isApplicationMessage)
 154     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 155   }
 156
 157   if(contextExpired) {
 158     //if (isApplicationMessage)
 159     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 160
 161     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 162       if(my_app.logEnabled()) my_app.writeLogFile(*request, "req2c-expired", serverSession->asString());
 163     }
 164   }
 165
 166   if(isOK) {
 167     LOGDEBUG(
 168       std::string msg = "Received response for diameter message:  ";
 169       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 170       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 171     );
 172
 173     // Write reception
 174     if(my_app.logEnabled()) my_app.writeLogFile(*message, "recvfc", serverSession->asString());
 175
 176     // This is not very usual, but answers could arrive from clients:
 177     anna::diameter::comm::Entity *entity = my_app.getEntity();
 178
 179     if(entity) {
 180       anna::diameter::comm::ClientSession *usedClientSession = my_app.getMyDiameterEngine()->findClientSession(request->getRequestClientSessionKey());
 181       std::string detail;
 182
 183       if(my_app.logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "<null client session>";  // esto no deberia ocurrir
 184
 185       try {
 186         anna::diameter::comm::Message *msg = my_app.createCommMessage();
 187         msg->updateEndToEnd(false); // end-to-end will be kept
 188         msg->setBody(*message);
 189
 190         // Metodo 1:
 191         if(usedClientSession) /* response = NULL =*/usedClientSession->send(msg);
 192
 193         // Metodo 2:
 194         //msg->setRequestClientSessionKey(request->getRequestClientSessionKey());
 195         //bool success = entity->send(msg);
 196
 197         my_app.releaseCommMessage(msg);
 198         my_app.releaseCommMessage(request);
 199
 200         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2e", detail);  // forwarded
 201       } catch(anna::RuntimeException &ex) {
 202         ex.trace();
 203
 204         if(my_app.logEnabled()) my_app.writeLogFile(*message, "fwd2eError", detail);  // forwarded
 205       }
 206     }
 207   }
 208 }
 209
 210 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 211 throw(anna::RuntimeException) {
 212   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 213   // Performance stats:
 214   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 215   // CommandId:
 216   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 217   LOGDEBUG
 218   (
 219     std::string msg = "Out-of-context response received from client: ";
 220     msg += anna::diameter::functions::commandIdAsPairString(cid);
 221     msg += " | DiameterServer: ";
 222     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 223     msg += " | EventTime: ";
 224     msg += anna::time::functions::currentTimeAsString();
 225     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 226   );
 227
 228   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 229 }
 230
 231 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 232 throw(anna::RuntimeException) {
 233   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 234   // Performance stats:
 235   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 236   // CommandId:
 237   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 238   LOGDEBUG
 239   (
 240     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 241     msg += anna::diameter::functions::commandIdAsPairString(cid);
 242     msg += " | DiameterServer: ";
 243     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 244     msg += " | EventTime: ";
 245     msg += anna::time::functions::currentTimeAsString();
 246     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 247   );
 248
 249   if(my_app.logEnabled()) my_app.writeLogFile(message, "recvfc", serverSession->asString());
 250 }