projects/stargazer/plugins/store/firebird/firebird_store.cpp

   1 /*
   2  *    This program is free software; you can redistribute it and/or modify
   3  *    it under the terms of the GNU General Public License as published by
   4  *    the Free Software Foundation; either version 2 of the License, or
   5  *    (at your option) any later version.
   6  *
   7  *    This program is distributed in the hope that it will be useful,
   8  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *    GNU General Public License for more details.
  11  *
  12  *    You should have received a copy of the GNU General Public License
  13  *    along with this program; if not, write to the Free Software
  14  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 /*
  18  *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
  19  */
  20
  21 /*
  22  *  This file contains a realization of a base firebird-storage plugin class
  23  *
  24  *  $Revision: 1.18 $
  25  *  $Date: 2010/01/08 16:00:45 $
  26  *
  27  */
  28
  29 #include "firebird_store.h"
  30
  31 #include "stg/ibpp.h"
  32 #include "stg/plugin_creator.h"
  33
  34 #include <string>
  35 #include <vector>
  36
  37 namespace
  38 {
  39 PLUGIN_CREATOR<FIREBIRD_STORE> frsc;
  40 }
  41
  42 extern "C" STORE * GetStore();
  43 //-----------------------------------------------------------------------------
  44 STORE * GetStore()
  45 {
  46 return frsc.GetPlugin();
  47 }
  48 //-----------------------------------------------------------------------------
  49 //-----------------------------------------------------------------------------
  50 //-----------------------------------------------------------------------------
  51 FIREBIRD_STORE::FIREBIRD_STORE()
  52     : version("firebird_store v.1.4"),
  53       db_server("localhost"),
  54       db_database("/var/stg/stargazer.fdb"),
  55       db_user("stg"),
  56       db_password("123456"),
  57       til(IBPP::ilConcurrency),
  58       tlr(IBPP::lrWait),
  59       schemaVersion(0),
  60       logger(GetPluginLogger(GetStgLogger(), "store_firebird"))
  61 {
  62 pthread_mutex_init(&mutex, NULL);
  63 }
  64 //-----------------------------------------------------------------------------
  65 FIREBIRD_STORE::~FIREBIRD_STORE()
  66 {
  67 db->Disconnect();
  68 }
  69 //-----------------------------------------------------------------------------
  70 int FIREBIRD_STORE::ParseSettings()
  71 {
  72 std::vector<PARAM_VALUE>::iterator i;
  73 std::string s;
  74
  75 for(i = settings.moduleParams.begin(); i != settings.moduleParams.end(); ++i)
  76     {
  77     if (i->value.empty())
  78         continue;
  79     s = ToLower(i->param);
  80
  81     if (s == "server")
  82         db_server = i->value.front();
  83
  84     if (s == "database")
  85         db_database = i->value.front();
  86
  87     if (s == "user")
  88         db_user = i->value.front();
  89
  90     if (s == "password")
  91         db_password = i->value.front();
  92
  93     // Advanced settings block
  94
  95     if (s == "isolationLevel")
  96         {
  97         if (i->value.front() == "Concurrency")
  98             til = IBPP::ilConcurrency;
  99         else if (i->value.front() == "DirtyRead")
 100             til = IBPP::ilReadDirty;
 101         else if (i->value.front() == "ReadCommitted")
 102             til = IBPP::ilReadCommitted;
 103         else if (i->value.front() == "Consistency")
 104             til = IBPP::ilConsistency;
 105         }
 106
 107     if (s == "lockResolution")
 108         {
 109         if (i->value.front() == "Wait")
 110             tlr = IBPP::lrWait;
 111         else if (i->value.front() == "NoWait")
 112             tlr = IBPP::lrNoWait;
 113         }
 114     }
 115
 116 try
 117     {
 118     db = IBPP::DatabaseFactory(db_server, db_database, db_user, db_password, "", "KOI8U", "");
 119     db->Connect();
 120     return CheckVersion();
 121     }
 122 catch (IBPP::Exception & ex)
 123     {
 124     strError = "IBPP exception";
 125     printfd(__FILE__, ex.what());
 126     return -1;
 127     }
 128
 129 return 0;
 130 }
 131 //-----------------------------------------------------------------------------
 132 int FIREBIRD_STORE::CheckVersion()
 133 {
 134 IBPP::Transaction tr = IBPP::TransactionFactory(db, IBPP::amRead, til, tlr);
 135 IBPP::Statement st = IBPP::StatementFactory(db, tr);
 136
 137 try
 138     {
 139     tr->Start();
 140     st->Execute("SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG=0 AND RDB$RELATION_NAME = 'TB_INFO'");
 141     if (!st->Fetch())
 142         {
 143         schemaVersion = 0;
 144         }
 145     else
 146         {
 147         st->Execute("SELECT version FROM tb_info");
 148         while (st->Fetch())
 149             st->Get(1, schemaVersion);
 150         }
 151     tr->Commit();
 152     logger("FIREBIRD_STORE: Current DB schema version: %d", schemaVersion);
 153     }
 154
 155 catch (IBPP::Exception & ex)
 156     {
 157     tr->Rollback();
 158     strError = "IBPP exception";
 159     printfd(__FILE__, ex.what());
 160     return -1;
 161     }
 162
 163 return 0;
 164 }
 165 //-----------------------------------------------------------------------------