Programming answers in double ended queue. Fix word "Coding" by "Encoding"
[anna.git] / example / diameter / launcher / main.cpp
index 301ab34..38a6b1d 100644 (file)
@@ -42,6 +42,7 @@
 
 #include <string>
 #include <map>
+#include <deque>
 
 
 #include <anna/config/defines.hpp>
@@ -101,12 +102,78 @@ anna::diameter::comm::Message G_commMsg;
 anna::diameter::codec::Message G_codecMsg, G_codecAnsMsg;
 anna::Recycler<anna::diameter::comm::Message> G_commMessages; // create on requests forwards without programmed answer / release in answers forward
 
-
 // Auxiliary resources for answers programming
-typedef std::map < int /* message code */, anna::diameter::codec::Message* > reacting_answers_container;
-typedef std::map < int /* message code */, anna::diameter::codec::Message* >::iterator  reacting_answers_iterator;
-typedef std::map < int /* message code */, anna::diameter::codec::Message* >::const_iterator  reacting_answers_const_iterator;
-reacting_answers_container G_reactingAnswers2C, G_reactingAnswers2E;
+class ProgrammedAnswers {
+
+typedef std::deque<anna::diameter::codec::Message*> codec_messages_deque;
+typedef std::deque<anna::diameter::codec::Message*>::iterator codec_messages_deque_iterator;
+typedef std::deque<anna::diameter::codec::Message*>::const_iterator codec_messages_deque_const_iterator;
+typedef std::map < int /* message code */, codec_messages_deque* > reacting_answers_container;
+typedef std::map < int /* message code */, codec_messages_deque* >::iterator  reacting_answers_iterator;
+typedef std::map < int /* message code */, codec_messages_deque* >::const_iterator  reacting_answers_const_iterator;
+
+  reacting_answers_container a_deques;
+
+  public:
+    ProgrammedAnswers() {};
+    ~ProgrammedAnswers() {
+      for (reacting_answers_const_iterator it = a_deques.begin(); it != a_deques.end(); it++) {
+        anna::diameter::codec::Engine *engine = anna::functions::component <Engine> (ANNA_FILE_LOCATION);
+        engine->releaseMessage(*(it->second->begin()));
+        delete(it->second);
+      }
+    }
+
+    void addMessage(int code, anna::diameter::codec::Message *message) throw() {
+      reacting_answers_const_iterator it = a_deques.find(code);
+      if (it != a_deques.end()) {
+        it->second->push_back(message);
+      }
+      else {
+        codec_messages_deque *deque = new codec_messages_deque;
+        a_deques[code] = deque;
+        deque->push_back(message);
+      }
+    }
+
+    anna::diameter::codec::Message* getMessage(int code) const throw() { //get the front message (begin()), returns NULL if deque is empty
+      anna::diameter::codec::Message *result = NULL;
+      reacting_answers_const_iterator it = a_deques.find(code);
+      if (it != a_deques.end()) {
+        if (!it->second->empty()) result = *(it->second->begin());
+      }
+      return result;
+    }
+
+    void nextMessage(int code) throw() { //pops the deque and release the message (when deque is not empty: deque::empty)
+      reacting_answers_const_iterator it = a_deques.find(code);
+      if (it != a_deques.end()) {
+        if (!it->second->empty()) {
+          anna::diameter::codec::Engine *engine = anna::functions::component <Engine> (ANNA_FILE_LOCATION);
+          engine->releaseMessage(*(it->second->begin()));
+          it->second->pop_front();
+        }
+      }
+    }
+
+    std::string asString() const throw() {
+      std::string result = "No ocurrences found\n\n";
+      if(a_deques.size() != 0) {
+        for(reacting_answers_const_iterator it = a_deques.begin(); it != a_deques.end(); it++) {
+          result += "Answer code .............................................................. ";
+          result += anna::functions::asString(it->first); result += "\n";
+          for(codec_messages_deque_const_iterator itm = it->second->begin(); itm != it->second->end(); itm++) {
+            result += (*itm)->asXMLString();
+            result += "\n";
+          }
+          result += "\n";
+        }
+      }
+      return result;
+    }
+};
+
+ProgrammedAnswers G_reactingAnswers2C, G_reactingAnswers2E;
 
 
 
@@ -330,8 +397,6 @@ public:
   void resetCounters() throw();
   void signalUSR2() throw(anna::RuntimeException);
   std::string help() const throw();
-  std::string programmedAnswers2e() const throw();
-  std::string programmedAnswers2c() const throw();
 
   // helpers
   bool getDataBlockFromHexFile(const std::string &pathfile, anna::DataBlock &db) const throw();
@@ -871,39 +936,6 @@ std::string Launcher::help() const throw() {
 }
 
 
-std::string Launcher::programmedAnswers2c() const throw() {
-  std::string result = "\n";
-  result += "\n          ------------- CURRENT PROGRAMMED ANSWERS TO CLIENT -------------\n\n";
-
-  if(G_reactingAnswers2C.size() == 0) {
-    result += "No ocurrences found\n\n";
-  } else {
-    for(reacting_answers_const_iterator it = G_reactingAnswers2C.begin(); it != G_reactingAnswers2C.end(); it++) {
-      result += (*it).second->asXMLString();
-      result += "\n\n";
-    }
-  }
-
-  return result;
-}
-
-
-std::string Launcher::programmedAnswers2e() const throw() {
-  std::string result = "\n";
-  result += "\n\n          ------------- CURRENT PROGRAMMED ANSWERS TO ENTITY -------------\n\n";
-
-  if(G_reactingAnswers2E.size() == 0) {
-    result += "No ocurrences found\n\n";
-  } else {
-    for(reacting_answers_const_iterator it = G_reactingAnswers2E.begin(); it != G_reactingAnswers2E.end(); it++) {
-      result += (*it).second->asXMLString();
-      result += "\n\n";
-    }
-  }
-
-  return result;
-}
-
 void MyCommunicator::prepareAnswer(anna::diameter::codec::Message *answer, const anna::DataBlock &request) const throw() {
   // Sequence values (hop-by-hop and end-to-end), session-id and subscription-id avps, are mirrored to the peer which sent the request.
   // If user wants to test a specific answer without changing it, use send operations better than programming.
@@ -1999,16 +2031,12 @@ void Launcher::eventOperation(const std::string &operation, std::string &respons
         throw anna::RuntimeException("Cannot program diameter requests. Answer type must be provided", ANNA_FILE_LOCATION);
 
       int code = message->getId().first;
-      reacting_answers_const_iterator it = G_reactingAnswers2C.find(code);
-
-      if(it != G_reactingAnswers2C.end()) {  // found: replace
-        LOGDEBUG(anna::Logger::debug("Replacing formerly programed answer...", ANNA_FILE_LOCATION));
-        engine->releaseMessage((*it).second);
-      }
-
-      G_reactingAnswers2C[code] = message;
+      LOGDEBUG(anna::Logger::debug("Adding a new programed 'answer to client' to the deque...", ANNA_FILE_LOCATION));
+      G_reactingAnswers2C.addMessage(code, message);
     } else { // answers query on stdout
-      std::cout << programmedAnswers2c() << std::endl;
+      std::cout << std::endl << std::endl;
+      std::cout << "          ------------- CURRENT PROGRAMMED ANSWERS TO CLIENT -------------\n\n";
+      std::cout << G_reactingAnswers2C.asString() << std::endl;
       response_content = "Programmed answers dumped on stdout\n";
       return;
     }
@@ -2030,16 +2058,12 @@ void Launcher::eventOperation(const std::string &operation, std::string &respons
         throw anna::RuntimeException("Cannot program diameter requests. Answer type must be provided", ANNA_FILE_LOCATION);
 
       int code = message->getId().first;
-      reacting_answers_const_iterator it = G_reactingAnswers2E.find(code);
-
-      if(it != G_reactingAnswers2E.end()) {  // found: replace
-        LOGDEBUG(anna::Logger::debug("Replacing formerly programed answer...", ANNA_FILE_LOCATION));
-        engine->releaseMessage((*it).second);
-      }
-
-      G_reactingAnswers2E[code] = message;
+      LOGDEBUG(anna::Logger::debug("Adding a new programed 'answer to entity' to the deque...", ANNA_FILE_LOCATION));
+      G_reactingAnswers2E.addMessage(code, message);
     } else { // answers query on stdout
-      std::cout << programmedAnswers2e() << std::endl;
+      std::cout << std::endl << std::endl;
+      std::cout << "          ------------- CURRENT PROGRAMMED ANSWERS TO ENTITY -------------\n\n";
+      std::cout << G_reactingAnswers2E.asString() << std::endl;
       response_content = "Programmed answers dumped on stdout\n";
       return;
     }
@@ -2184,10 +2208,8 @@ throw(anna::RuntimeException) {
 
   // Lookup reacting answers list:
   int code = cid.first;
-  reacting_answers_const_iterator it = G_reactingAnswers2E.find(code);
-
-  if(it != G_reactingAnswers2E.end()) {
-    anna::diameter::codec::Message *answer_message = (*it).second;
+  anna::diameter::codec::Message *answer_message = G_reactingAnswers2E.getMessage(code);
+  if (answer_message) {
     // Prepare answer:
     my_app.getCommunicator()->prepareAnswer(answer_message, message);
 
@@ -2201,26 +2223,38 @@ throw(anna::RuntimeException) {
 
       if(my_app.logEnabled()) my_app.writeLogFile(*answer_message, "send2eError", clientSession->asString());
     }
-  } else { // not found: forward to client (if exists)
-    // Forward to client:
-    anna::diameter::comm::LocalServer *localServer = my_app.getDiameterLocalServer();
 
-    if(localServer && (cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) /* don't forward CER */) {
-      try {
-        anna::diameter::comm::Message *msg = G_commMessages.create();
-        msg->setBody(message);
-        msg->setRequestClientSessionKey(clientSession->getKey());
-        bool success = localServer->send(msg);
+    // Pop front the reacting answer:
+    G_reactingAnswers2E.nextMessage(code);
+    return;
+  }
 
-        // Detailed log:
-        if(my_app.logEnabled()) {
-          anna::diameter::comm::ServerSession *usedServerSession = localServer->getLastUsedResource();
-          std::string detail = usedServerSession ? usedServerSession->asString() : "<null server session>"; // esto no deberia ocurrir
-          my_app.writeLogFile(message, (success ? "fwd2c" : "fwd2cError"), detail);
-        }
-      } catch(anna::RuntimeException &ex) {
-        ex.trace();
+  LOGDEBUG
+  (
+    std::string msg = "No answers programmed (maybe sold out) for request coming from entity: ";
+    msg += anna::diameter::functions::commandIdAsPairString(cid);
+    anna::Logger::debug(msg, ANNA_FILE_LOCATION);
+  );
+
+  // not found: forward to client (if exists)
+  // Forward to client:
+  anna::diameter::comm::LocalServer *localServer = my_app.getDiameterLocalServer();
+
+  if(localServer && (cid != anna::diameter::helpers::base::COMMANDID__Capabilities_Exchange_Request) /* don't forward CER */) {
+    try {
+      anna::diameter::comm::Message *msg = G_commMessages.create();
+      msg->setBody(message);
+      msg->setRequestClientSessionKey(clientSession->getKey());
+      bool success = localServer->send(msg);
+
+      // Detailed log:
+      if(my_app.logEnabled()) {
+        anna::diameter::comm::ServerSession *usedServerSession = localServer->getLastUsedResource();
+        std::string detail = usedServerSession ? usedServerSession->asString() : "<null server session>"; // esto no deberia ocurrir
+        my_app.writeLogFile(message, (success ? "fwd2c" : "fwd2cError"), detail);
       }
+    } catch(anna::RuntimeException &ex) {
+      ex.trace();
     }
   }
 }
@@ -2364,10 +2398,10 @@ throw(anna::RuntimeException) {
 
   // If no answer is programmed and entity is configured, the failed request would be forwarded even being wrong (delegates at the end point)
   int code = cid.first;
-  reacting_answers_const_iterator it = G_reactingAnswers2C.find(code);
-  bool programmed = (it != G_reactingAnswers2C.end());
-  anna::diameter::comm::Entity *entity = my_app.getEntity();
+  anna::diameter::codec::Message *programmed_answer = G_reactingAnswers2C.getMessage(code);
+  bool programmed = (programmed_answer != NULL);
 
+  anna::diameter::comm::Entity *entity = my_app.getEntity();
   if(!programmed && entity) {  // forward condition (no programmed answer + entity available)
     anna::diameter::comm::Message *msg = G_commMessages.create();
     msg->setBody(message);
@@ -2403,7 +2437,7 @@ throw(anna::RuntimeException) {
   // Programmed answer only when all is ok
   if(analysisOK) {
     if(programmed) {
-      answer_message = (*it).second;
+      answer_message = programmed_answer;
       // Prepare answer:
       my_app.getCommunicator()->prepareAnswer(answer_message, message);
     } else return; // nothing done
@@ -2428,6 +2462,9 @@ throw(anna::RuntimeException) {
 
   // Restore validation mode
   codecEngine->setValidationMode(backupVM);
+
+  // Pop front the reacting answer:
+  if(analysisOK && programmed) G_reactingAnswers2C.nextMessage(code);
 }
 
 void MyLocalServer::eventResponse(const anna::diameter::comm::Response &response)