source/comm/internal/ConnectionRecover.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 #include <algorithm>
  10
  11 #include <anna/core/tracing/TraceMethod.hpp>
  12 #include <anna/core/tracing/Logger.hpp>
  13 #include <anna/core/functions.hpp>
  14
  15 #include <anna/xml/Node.hpp>
  16
  17 #include <anna/comm/Communicator.hpp>
  18 #include <anna/comm/Server.hpp>
  19 #include <anna/comm/ClientSocket.hpp>
  20
  21 using namespace std;
  22 using namespace anna;
  23
  24 /*
  25  * Se invoca desde el handler::RemoteConnection::finalize y debe estar protegido por la SSCC del Communicator
  26  */
  27 void comm::ConnectionRecover::annotateFault(comm::Server* server)
  28 {
  29   if(server->autoRecovery() == false)
  30     return;
  31
  32   if(find(a_breaks.begin(), a_breaks.end(), server) != a_breaks.end())
  33     return;
  34
  35   if(a_isRunning == false) {
  36     a_nextTime = functions::millisecond() + a_communicator.getRecoveryTime();
  37     a_isRunning = true;
  38   }
  39
  40   a_breaks.push_back(server);
  41   a_recovering = a_breaks.begin();
  42   string msg("comm::ConnectionRecover::fault | ");
  43   msg += server->asString();
  44   msg += anna::functions::asText(" | NextTime: ", a_nextTime);
  45   Logger::error(msg, ANNA_FILE_LOCATION);
  46 }
  47
  48 /*
  49  * Se invoca desde el Communicator y en MT debe estar protegido por la SSCC del Communicator
  50  */
  51 void comm::ConnectionRecover::tryRecover()
  52 {
  53   LOGMETHOD(TraceMethod traceMethod(Logger::Local7, "comm::ConnectionRecover", "tryRecover", ANNA_FILE_LOCATION));
  54   Millisecond now(functions::millisecond());
  55
  56   if(now < a_nextTime)
  57     return;
  58
  59   if(a_recovering == a_breaks.end())
  60     return;
  61
  62   Millisecond maxTime = now + a_communicator.getTryingConnectionTime();
  63   break_iterator beginning = a_recovering;
  64   Server* server;
  65
  66   while(now < maxTime && a_breaks.size() > 0) {
  67     server = *a_recovering;
  68
  69     try {
  70       server->connect();
  71       LOGNOTICE(
  72         Logger::write(Logger::Notice, "Recover", server->asString(), ANNA_FILE_LOCATION)
  73       );
  74       a_recovering = a_breaks.erase(a_recovering);
  75     } catch(Exception& ex) {
  76       a_recovering ++;
  77     }
  78
  79     if(a_recovering == a_breaks.end())
  80       a_recovering = a_breaks.begin();
  81
  82     if(a_recovering == beginning)
  83       break;
  84
  85     now = functions::millisecond();
  86   }
  87
  88   a_isRunning = (a_breaks.size() > 0);
  89   a_nextTime = now + a_communicator.getRecoveryTime();
  90   LOGDEBUG(
  91     string msg("comm::ConnectionRecover::recover | Running: ");
  92     msg += anna::functions::asString(a_isRunning);
  93     msg += anna::functions::asText(" | N: ", (int) a_breaks.size());
  94     msg += anna::functions::asText(" | NextTime: ", a_nextTime);
  95     Logger::debug(msg, ANNA_FILE_LOCATION);
  96   );
  97 }
  98
  99 /*
 100 bool comm::ConnectionRecover::contains (comm::Server* server) const
 101
 102 {
 103    Guard guard (a_mutex, "comm::ConnectionRecover::contains");
 104    return std::find (a_breaks.begin (), a_breaks.end (), server) != a_breaks.end ();
 105 }
 106
 107 void comm::ConnectionRecover::erase (comm::Server* server)
 108
 109 {
 110    Guard guard (a_mutex, "comm::ConnectionRecover::erase");
 111
 112    vector <Server*>::iterator ii = find (a_breaks.begin (), a_breaks.end (), server);
 113
 114    if (ii == a_breaks.end ())
 115       return;
 116
 117    if (ii == a_recovering)
 118       if ((a_recovering = a_breaks.erase (ii)) == a_breaks.end ())
 119          a_recovering = a_breaks.begin ();
 120
 121    a_isRunning = (a_breaks.size () > 0);
 122 }
 123 */
 124
 125 xml::Node* comm::ConnectionRecover::asXML(xml::Node* parent) const
 126 noexcept(false) {
 127   xml::Node* connectionRecover = parent->createChild("comm.ConnectionRecover");
 128   connectionRecover->createAttribute("Active", functions::asString(a_isRunning));
 129
 130   for(std::vector <Server*>::const_iterator ii = a_breaks.begin(), maxii = a_breaks.end(); ii != maxii; ii ++)
 131     (*ii)->asXML(connectionRecover);
 132
 133   return connectionRecover;
 134 }
 135
 136
 137