example/diameter/launcher/MyDiameterEntity.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.comm/Response.hpp>
  14 #include <anna/diameter.comm/ClientSession.hpp>
  15 #include <anna/diameter/helpers/base/functions.hpp>
  16 #include <anna/diameter/helpers/dcca/functions.hpp>
  17
  18 // Process
  19 #include "MyDiameterEngine.hpp"
  20 #include "MyDiameterEntity.hpp"
  21 #include "MyLocalServer.hpp"
  22 #include "Launcher.hpp"
  23 #include "RealmNode.hpp"
  24
  25
  26 void MyDiameterEntity::eventRequestRetransmission(const anna::diameter::comm::ClientSession* clientSession, anna::diameter::comm::Message *request) throw() {
  27
  28   LOGMETHOD(anna::TraceMethod tm("launcher::MyDiameterEntity", "eventRequestRetransmission", ANNA_FILE_LOCATION));
  29
  30   // Base class:
  31   Entity::eventRequestRetransmission(clientSession, request); // warning trace
  32
  33   // Performance stats:
  34   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
  35   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
  36   // CommandId:
  37   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(request->getBody());
  38   LOGDEBUG
  39   (
  40     std::string msg = "Request retransmitted: ";
  41     msg += anna::diameter::functions::commandIdAsPairString(cid);
  42     msg += " | DiameterServer: ";
  43     msg += anna::functions::socketLiteralAsString(clientSession->getAddress(), clientSession->getPort());
  44     msg += " | EventTime: ";
  45     msg += anna::time::functions::currentTimeAsString();
  46     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  47   );
  48
  49   // Write retransmission
  50   if(my_node->logEnabled()) my_node->writeLogFile(request->getBody(), "retry", clientSession->asString());
  51 }
  52
  53
  54 int MyDiameterEntity::readSocketId(const anna::diameter::comm::Message* message, int maxClientSessions) const throw() {
  55
  56   if(a_sessionBasedModelsType == "RoundRobin") return -1;  // IEC also would return -1
  57
  58   try {
  59     // Service-Context-Id:
  60     anna::diameter::helpers::dcca::ChargingContext::_v chargingContext;
  61     std::string scid = anna::diameter::helpers::dcca::functions::getServiceContextId(message->getBody(), chargingContext);
  62
  63     switch(chargingContext) {
  64     case anna::diameter::helpers::dcca::ChargingContext::Data:
  65     case anna::diameter::helpers::dcca::ChargingContext::Voice:
  66     case anna::diameter::helpers::dcca::ChargingContext::Content: {
  67       // Session-Id: '<DiameterIdentity>;<high 32 bits>;<low 32 bits>[;<optional value>="">]'
  68       std::string sid = anna::diameter::helpers::base::functions::getSessionId(message->getBody());
  69       std::string diameterIdentity, optional;
  70       anna::U32 high, low;
  71       anna::diameter::helpers::base::functions::decodeSessionId(sid, diameterIdentity, high, low /* context-teid */, optional);
  72
  73       if(a_sessionBasedModelsType == "SessionIdLowPart") return (low % maxClientSessions);
  74
  75       if(a_sessionBasedModelsType == "SessionIdHighPart") return (high % maxClientSessions);
  76
  77       if(a_sessionBasedModelsType == "SessionIdOptionalPart") return (atoi(optional.c_str()) % maxClientSessions);
  78     }
  79     case anna::diameter::helpers::dcca::ChargingContext::SMS:
  80     case anna::diameter::helpers::dcca::ChargingContext::MMS:
  81     case anna::diameter::helpers::dcca::ChargingContext::Unknown:
  82     default:
  83        return -1; // IEC model and Unknown traffic types
  84     }
  85   } catch(anna::RuntimeException &ex) {
  86     LOGDEBUG(
  87       std::string msg = ex.getText();
  88       msg += " | Round-robin between sessions will be used to send";
  89       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
  90     );
  91   }
  92
  93   return -1;
  94 }
  95
  96 void MyDiameterEntity::eventRequest(anna::diameter::comm::ClientSession *clientSession, const anna::DataBlock &message)
  97 throw(anna::RuntimeException) {
  98   LOGMETHOD(anna::TraceMethod tm("launcher::MyDiameterEntity", "eventRequest", ANNA_FILE_LOCATION));
  99   // Performance stats:
 100   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 101   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 102   // CommandId:
 103   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 104   LOGDEBUG
 105   (
 106     std::string msg = "Request received: ";
 107     msg += anna::diameter::functions::commandIdAsPairString(cid);
 108     msg += " | DiameterServer: ";
 109     msg += anna::functions::socketLiteralAsString(clientSession->getAddress(), clientSession->getPort());
 110     msg += " | EventTime: ";
 111     msg += anna::time::functions::currentTimeAsString();
 112     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 113   );
 114
 115   // Write reception
 116   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfe", clientSession->asString());
 117
 118   // Lookup reacting answers list:
 119   int code = cid.first;
 120   anna::diameter::codec::Message *answer_message = a_reactingAnswers.getMessage(code);
 121   if (answer_message) {
 122     // Prepare answer:
 123     my_app.getCommunicator()->prepareAnswer(answer_message, message);
 124
 125     try {
 126       anna::diameter::comm::Message *msg = my_node->createCommMessage();
 127       msg->setBody(answer_message->code());
 128       /* response = NULL =*/clientSession->send(msg);
 129       my_node->releaseCommMessage(msg);
 130
 131       if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "sent2e", clientSession->asString());
 132     } catch(anna::RuntimeException &ex) {
 133       ex.trace();
 134
 135       if(my_node->logEnabled()) my_node->writeLogFile(*answer_message, "send2eError", clientSession->asString());
 136     }
 137
 138     // Pop front the reacting answer:
 139     a_reactingAnswers.nextMessage(code);
 140     return;
 141   }
 142
 143   LOGDEBUG
 144   (
 145     std::string msg = "No answers programmed (maybe sold out) for request coming from entity: ";
 146     msg += anna::diameter::functions::commandIdAsPairString(cid);
 147     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 148   );
 149
 150   // not found: forward to client (if exists)
 151   // Forward to client:
 152   MyLocalServer *localServer = my_node->getDiameterServer();
 153
 154   if(localServer && (cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) /* don't forward CER */) {
 155     try {
 156       anna::diameter::comm::Message *msg = my_node->createCommMessage();
 157       msg->forwardEndToEnd(); // end-to-end will be kept
 158       msg->setBody(message);
 159       msg->setRequestClientSessionKey(clientSession->getKey());
 160       bool success = localServer->send(msg);
 161
 162       // Detailed log:
 163       if(my_node->logEnabled()) {
 164         anna::diameter::comm::ServerSession *usedServerSession = localServer->getLastUsedResource();
 165         std::string detail = usedServerSession ? usedServerSession->asString() : "<null server session>"; // esto no deberia ocurrir
 166         my_node->writeLogFile(message, (success ? "fwd2c" : "fwd2cError"), detail);
 167       }
 168     } catch(anna::RuntimeException &ex) {
 169       ex.trace();
 170     }
 171   }
 172 }
 173
 174 void MyDiameterEntity::eventResponse(const anna::diameter::comm::Response &response)
 175 throw(anna::RuntimeException) {
 176   LOGMETHOD(anna::TraceMethod tm("launcher::MyDiameterEntity", "eventResponse", ANNA_FILE_LOCATION));
 177   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 178   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 179   anna::diameter::comm::ClassCode::_v code = response.getClassCode();
 180   anna::diameter::comm::Response::ResultCode::_v result = response.getResultCode();
 181   anna::diameter::comm::Message* request = const_cast<anna::diameter::comm::Message*>(response.getRequest());
 182   const anna::DataBlock* message = response.getMessage();
 183   const anna::diameter::comm::ClientSession *clientSession = static_cast<const anna::diameter::comm::ClientSession *>(response.getSession());
 184   bool isBindResponse = (code == anna::diameter::comm::ClassCode::Bind);
 185   bool isApplicationMessage = (code == anna::diameter::comm::ClassCode::ApplicationMessage);
 186   bool contextExpired = (result == anna::diameter::comm::Response::ResultCode::Timeout);
 187   bool isUnavailable = (result == anna::diameter::comm::Response::ResultCode::DiameterUnavailable);
 188   bool isOK = (result == anna::diameter::comm::Response::ResultCode::Success);
 189   // CommandId:
 190   anna::diameter::CommandId request_cid = request->getCommandId();
 191   LOGDEBUG
 192   (
 193     std::string msg = "Response received for original diameter request: ";
 194     msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 195     msg += " | Response: ";
 196     msg += response.asString();
 197     msg += " | DiameterServer: ";
 198     msg += anna::functions::socketLiteralAsString(clientSession->getAddress(), clientSession->getPort());
 199     msg += " | EventTime: ";
 200     msg += anna::time::functions::currentTimeAsString();
 201     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 202   );
 203
 204   if(isUnavailable) {
 205     //if (isApplicationMessage)
 206     LOGWARNING(anna::Logger::warning("Diameter entity unavailable for Diameter Request", ANNA_FILE_LOCATION));
 207   }
 208
 209   if(contextExpired) {
 210     //if (isApplicationMessage)
 211     LOGWARNING(anna::Logger::warning("Context Expired for Diameter Request which was sent to the entity", ANNA_FILE_LOCATION));
 212
 213     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 214       if(my_node->logEnabled()) my_node->writeLogFile(*request, "req2e-expired", clientSession->asString());
 215     }
 216   }
 217
 218   if(isOK) {
 219     LOGDEBUG(
 220       std::string msg = "Received response for diameter message:  ";
 221       msg += anna::diameter::functions::commandIdAsPairString(request_cid);
 222       anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 223     );
 224
 225     // Write reception
 226     if(request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) {  // don't trace CEA
 227       if(my_node->logEnabled()) {
 228         my_node->writeLogFile(*message, "recvfe", clientSession->asString());
 229       }
 230     }
 231
 232     // Forward to client:
 233     MyLocalServer *localServer = my_node->getDiameterServer();
 234
 235     if(localServer && (request_cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) /* don't forward CEA */) {
 236       try {
 237         anna::diameter::comm::Message *msg = my_node->createCommMessage();
 238         msg->forwardEndToEnd(); // end-to-end will be kept
 239         msg->setBody(*message);
 240         bool success = localServer->send(msg, request->getRequestServerSessionKey());
 241         my_node->releaseCommMessage(msg);
 242         my_node->releaseCommMessage(request);
 243
 244         // Detailed log:
 245         anna::diameter::comm::ServerSession *usedServerSession = my_node->getMyDiameterEngine()->findServerSession(request->getRequestServerSessionKey());
 246         std::string detail = usedServerSession ? usedServerSession->asString() : "<null server session>"; // esto no deberia ocurrir
 247
 248         if(my_node->logEnabled()) {
 249           my_node->writeLogFile(*message, (success ? "fwd2c" : "fwd2cError"), detail);
 250         }
 251       } catch(anna::RuntimeException &ex) {
 252         ex.trace();
 253       }
 254     }
 255   }
 256
 257   // Triggering burst:
 258   if(isOK || contextExpired) my_node->sendBurstMessage();
 259 }
 260
 261 void MyDiameterEntity::eventUnknownResponse(anna::diameter::comm::ClientSession *clientSession, const anna::DataBlock &message)
 262 throw(anna::RuntimeException) {
 263   LOGMETHOD(anna::TraceMethod tm("launcher::MyDiameterEntity", "eventUnknownResponse", ANNA_FILE_LOCATION));
 264   // Performance stats:
 265   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 266   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 267   // CommandId:
 268   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 269   LOGDEBUG
 270   (
 271     std::string msg = "Out-of-context response received from entity: ";
 272     msg += anna::diameter::functions::commandIdAsPairString(cid);
 273     msg += " | DiameterServer: ";
 274     msg += anna::functions::socketLiteralAsString(clientSession->getAddress(), clientSession->getPort());
 275     msg += " | EventTime: ";
 276     msg += anna::time::functions::currentTimeAsString();
 277     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 278   );
 279
 280   // Write reception
 281   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfe-ans-unknown", clientSession->asString());
 282 }
 283
 284 void MyDiameterEntity::eventDPA(anna::diameter::comm::ClientSession *clientSession, const anna::DataBlock &message)
 285 throw(anna::RuntimeException) {
 286   LOGMETHOD(anna::TraceMethod tm("launcher::MyDiameterEntity", "eventDPA", ANNA_FILE_LOCATION));
 287   // Performance stats:
 288   Launcher& my_app = static_cast <Launcher&>(anna::app::functions::getApp());
 289   RealmNode * my_node = my_app.getRealmNode(getEngine()->getRealm());
 290   // CommandId:
 291   anna::diameter::CommandId cid = anna::diameter::codec::functions::getCommandId(message);
 292   LOGDEBUG
 293   (
 294     std::string msg = "Disconnect-Peer-Answer received from entity: ";
 295     msg += anna::diameter::functions::commandIdAsPairString(cid);
 296     msg += " | DiameterServer: ";
 297     msg += anna::functions::socketLiteralAsString(clientSession->getAddress(), clientSession->getPort());
 298     msg += " | EventTime: ";
 299     msg += anna::time::functions::currentTimeAsString();
 300     anna::Logger::debug(msg, ANNA_FILE_LOCATION);
 301   );
 302
 303   // Write reception
 304   if(my_node->logEnabled()) my_node->writeLogFile(message, "recvfe", clientSession->asString());
 305 }