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
  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   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
  32
  33   // CommandId:
  34   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
  35   LOGDEBUG
  36   (
  37     std::string msg = "Request received: ";
  38     msg += anna::diameter::functions::commandIdAsPairString(cid);
  39     msg += " | DiameterServer: ";
  40     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
  41     msg += " | EventTime: ";
  42     msg += anna::time::functions::currentTimeAsString();
  43     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  44   );
  45
  46   // Write reception
  47   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc", serverSession->asString());
  48
  49   // If no answer is programmed and entity is configured, the failed request would be forwarded even being wrong (delegates at the end point)
  50   int code = cid.first;
  51   anna::diameter::codec::Message *programmed_answer = a_reactingAnswers.getMessage(code);
  52   bool programmed = (programmed_answer != NULL);
  53
  54   anna::diameter::comm::Entity *entity = my_node->getEntity();
  55   if(!programmed && entity) {  // forward condition (no programmed answer + entity available)
  56     anna::diameter::comm::Message *msg = my_node->createCommMessage();
  57     msg->forwardEndToEnd(); // end-to-end will be kept
  58     msg->setBody(message);
  59     msg->setRequestServerSessionKey(serverSession->getKey());
  60     bool success = entity->send(msg, my_node->getEntity()->getBalance());
  61
  62     // Detailed log:
  63     if(my_node->logEnabled()) {
  64       anna::diameter::comm::Server *usedServer = entity->getLastUsedResource();
  65       anna::diameter::comm::ClientSession *usedClientSession = usedServer ? usedServer->getLastUsedResource() : NULL;
  66       std::string detail = usedClientSession ? usedClientSession->asString() : "<null client session>"; // esto no deberia ocurrir
  67       my_node->writeLogFile(message, (success ? "fwd2e" : "fwd2eError"), detail); // forwarded
  68     }
  69
  70     return;
  71   }
  72
  73   // Error analisys:
  74   bool analysisOK = true; // by default
  75   anna::diameter::codec::Message *answer_message = NULL;
  76   anna::diameter::codec::Message codecMsg(a_codecEngine);
  77   anna::diameter::codec::Message codecAnsMsg(a_codecEngine);
  78
  79   CommandLine& cl(anna::CommandLine::instantiate());
  80   if(!cl.exists("ignoreErrors")) {  // Error analysis
  81     answer_message = (anna::diameter::codec::Message *)&codecAnsMsg;
  82     answer_message->clear();
  83
  84     // Decode
  85     try { codecMsg.decode(message, answer_message); } catch(anna::RuntimeException &ex) { ex.trace(); }
  86
  87     answer_message->setStandardToAnswer(codecMsg, my_node->getMyDiameterEngine()->getHost(), my_node->getMyDiameterEngine()->getRealm());
  88     analysisOK = (answer_message->getResultCode() == anna::diameter::helpers::base::AVPVALUES__Result_Code::DIAMETER_SUCCESS);
  89   }
  90
  91   // Programmed answer only when all is ok
  92   if(analysisOK) {
  93     if(programmed) {
  94       answer_message = programmed_answer;
  95       // Prepare answer:
  96       my_app.getCommunicator()->prepareAnswer(answer_message, message);
  97     } else return; // nothing done
  98   }
  99
 100   anna::diameter::codec::Engine::ValidationMode::_v backupVM = a_codecEngine->getValidationMode();
 101
 102   if(!analysisOK)
 103     a_codecEngine->setValidationMode(anna::diameter::codec::Engine::ValidationMode::Never);
 104
 105   try {
 106     anna::diameter::comm::Message *msg = my_node->createCommMessage();
 107     msg->setBody(answer_message->code());
 108     /* response = NULL =*/serverSession->send(msg);
 109     my_node->releaseCommMessage(msg);
 110
 111     if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "sent2c", serverSession->asString());
 112   } catch(anna::RuntimeException &ex) {
 113     ex.trace();
 114     if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "send2cError", serverSession->asString());
 115   }
 116
 117   // Restore validation mode
 118   a_codecEngine->setValidationMode(backupVM);
 119
 120   // Pop front the reacting answer:
 121   if(analysisOK && programmed) a_reactingAnswers.nextMessage(code);
 122 }
 123
 124 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)
 125 throw(anna::RuntimeException) {
 126   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventResponse", ANNA_FILE_LOCATION));
 127   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 128   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 129   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 130   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 131   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 132   const anna::DataBlock* message = response.getMessage();
 133   const anna::diameter::comm::ServerSession *serverSession = static_cast<const anna::diameter::comm::ServerSession *>(response.getSession());
 134   bool isBindResponse = (code == anna::diameter::comm::ClassCode::Bind);
 135   bool isApplicationMessage = (code == anna::diameter::comm::ClassCode::ApplicationMessage);
 136   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 137   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 138   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 139   // CommandId:
 140   anna::diameter::CommandId request_cid = request->getCommandId();
 141   LOGDEBUG
 142   (
 143     std::string msg = "Response received for original diameter request: ";
 144     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 145     msg += " | Response: ";
 146     msg += response.asString();
 147     msg += " | LocalServer: ";
 148     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 149     msg += " | EventTime: ";
 150     msg += anna::time::functions::currentTimeAsString();
 151     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 152   );
 153
 154   if(isUnavailable) {
 155     //if (isApplicationMessage)
 156     LOGWARNING(anna::Logger::warning("Diameter client unavailable for Diameter Request", ANNA_FILE_LOCATION));
 157   }
 158
 159   if(contextExpired) {
 160     //if (isApplicationMessage)
 161     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the client", ANNA_FILE_LOCATION));
 162
 163     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 164       if(my_node->logEnabled()) my_node->writeLogFile(*request, "req2c-expired", serverSession->asString());
 165     }
 166   }
 167
 168   if(isOK) {
 169     LOGDEBUG(
 170       std::string msg = "Received response for diameter message:  ";
 171       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 172       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 173     );
 174
 175     // Write reception
 176     if(my_node->logEnabled()) my_node->writeLogFile(*message, "recvfc", serverSession->asString());
 177
 178     // This is not very usual, but answers could arrive from clients:
 179     anna::diameter::comm::Entity *entity = my_node->getEntity();
 180
 181     if(entity) {
 182       anna::diameter::comm::ClientSession *usedClientSession = my_node->getMyDiameterEngine()->findClientSession(request->getRequestClientSessionKey());
 183       std::string detail;
 184
 185       if(my_node->logEnabled()) detail = usedClientSession ? usedClientSession->asString() : "<null client session>";  // this should not happen
 186
 187       try {
 188         anna::diameter::comm::Message *msg = my_node->createCommMessage();
 189         msg->forwardEndToEnd(); // end-to-end will be kept
 190         msg->setBody(*message);
 191
 192         // Metodo 1:
 193         if(usedClientSession) /* response = NULL =*/usedClientSession->send(msg);
 194
 195         // Metodo 2:
 196         //msg->setRequestClientSessionKey(request->getRequestClientSessionKey());
 197         //bool success = entity->send(msg);
 198
 199         my_node->releaseCommMessage(msg);
 200         my_node->releaseCommMessage(request);
 201
 202         if(my_node->logEnabled()) my_node->writeLogFile(*message, "fwd2e", detail);  // forwarded
 203       } catch(anna::RuntimeException &ex) {
 204         ex.trace();
 205         if(my_node->logEnabled()) my_node->writeLogFile(*message, "fwd2eError", detail);  // forwarded
 206       }
 207     }
 208   }
 209 }
 210
 211 void MyLocalServer::eventUnknownResponse(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 212 throw(anna::RuntimeException) {
 213   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventUnknownResponse", ANNA_FILE_LOCATION));
 214   // Performance stats:
 215   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 216   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 217   // CommandId:
 218   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 219   LOGDEBUG
 220   (
 221     std::string msg = "Out-of-context response received from client: ";
 222     msg += anna::diameter::functions::commandIdAsPairString(cid);
 223     msg += " | DiameterServer: ";
 224     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 225     msg += " | EventTime: ";
 226     msg += anna::time::functions::currentTimeAsString();
 227     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 228   );
 229
 230   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc-ans-unknown", serverSession->asString());
 231 }
 232
 233 void MyLocalServer::eventDPA(anna::diameter::comm::ServerSession *serverSession, const anna::DataBlock &message)
 234 throw(anna::RuntimeException) {
 235   LOGMETHOD(anna::TraceMethod tm("launcher::MyLocalServer", "eventDPA", ANNA_FILE_LOCATION));
 236   // Performance stats:
 237   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 238   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 239   // CommandId:
 240   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 241   LOGDEBUG
 242   (
 243     std::string msg = "Disconnect-Peer-Answer response received from client: ";
 244     msg += anna::diameter::functions::commandIdAsPairString(cid);
 245     msg += " | DiameterServer: ";
 246     msg += anna::functions::socketLiteralAsString(serverSession->getAddress(), serverSession->getPort());
 247     msg += " | EventTime: ";
 248     msg += anna::time::functions::currentTimeAsString();
 249     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 250   );
 251
 252   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfc", serverSession->asString());
 253 }