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.
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.
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
18 * Author : Maxim Mamontov <faust@stargazer.dp.ua>
22 * This file contains a realization of a base postgresql-storage plugin class
25 * FreeMb logging on disconnects added
28 * Reconnection on faults added
34 * Initial implementation
37 * $Date: 2010/01/06 10:43:48 $
41 #include "postgresql_store.h"
43 #include "stg/common.h" // str2x, printfd
50 extern "C" STG::Store* GetStore()
52 static POSTGRESQL_STORE plugin;
56 //-----------------------------------------------------------------------------
57 POSTGRESQL_STORE::POSTGRESQL_STORE()
58 : versionString("postgresql_store v.1.3"),
60 database("stargazer"),
63 clientEncoding("KOI8"),
67 logger(STG::PluginLogger::get("store_postgresql"))
69 pthread_mutex_init(&mutex, NULL);
71 //-----------------------------------------------------------------------------
72 POSTGRESQL_STORE::~POSTGRESQL_STORE()
78 pthread_mutex_destroy(&mutex);
80 //-----------------------------------------------------------------------------
81 int POSTGRESQL_STORE::ParseSettings()
83 std::vector<STG::ParamValue>::iterator i;
85 for(i = settings.moduleParams.begin(); i != settings.moduleParams.end(); ++i)
89 std::string s = ToLower(i->param);
92 server = i->value.front();
96 database = i->value.front();
100 user = i->value.front();
104 password = i->value.front();
108 if (str2x(i->value.front(), retries))
110 strError = "Invalid 'retries' value";
111 printfd(__FILE__, "POSTGRESQL_STORE::ParseSettings(): '%s'\n", strError.c_str());
117 clientEncoding = "KOI8";
121 //-----------------------------------------------------------------------------
122 int POSTGRESQL_STORE::Connect()
125 params = "host=" + server + " "
126 + "dbname=" + database + " "
127 + "user=" + user + " "
128 + "password=" + password;
130 connection = PQconnectdb(params.c_str());
132 if (PQstatus(connection) != CONNECTION_OK)
134 strError = PQerrorMessage(connection);
135 printfd(__FILE__, "POSTGRESQL_STORE::Connect(): '%s'\n", strError.c_str());
136 // Will try to connect later
140 if (PQsetClientEncoding(connection, clientEncoding.c_str()))
142 strError = PQerrorMessage(connection);
143 printfd(__FILE__, "POSTGRESQL_STORE::Connect(): '%s'\n", strError.c_str());
147 return CheckVersion();
149 //-----------------------------------------------------------------------------
150 int POSTGRESQL_STORE::Reset() const
152 for (int i = 0; i < retries && PQstatus(connection) != CONNECTION_OK; ++i)
154 struct timespec ts = {1, 0};
155 nanosleep(&ts, NULL);
159 if (PQstatus(connection) != CONNECTION_OK)
161 strError = PQerrorMessage(connection);
162 printfd(__FILE__, "POSTGRESQL_STORE::Reset(): '%s'\n", strError.c_str());
166 if (PQsetClientEncoding(connection, clientEncoding.c_str()))
168 strError = PQerrorMessage(connection);
169 printfd(__FILE__, "POSTGRESQL_STORE::Reset(): '%s'\n", strError.c_str());
173 return CheckVersion();
175 //-----------------------------------------------------------------------------
176 int POSTGRESQL_STORE::CheckVersion() const
179 if (StartTransaction())
181 strError = "Failed to start transaction";
182 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
186 PGresult * result = PQexec(connection, "SELECT MAX(version) FROM tb_info");
188 if (PQresultStatus(result) != PGRES_TUPLES_OK)
190 strError = PQresultErrorMessage(result);
192 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n");
193 RollbackTransaction();
197 if (str2x(PQgetvalue(result, 0, 0), version))
199 strError = "Invalid DB version";
201 RollbackTransaction();
202 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
208 if (version < DB_MIN_VERSION)
210 strError = "DB version too old";
211 RollbackTransaction();
212 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
218 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): I recommend you to upgrade your DB to higher version to support FreeMb logging on disconnect. Current version is %d\n", version);
221 if (CommitTransaction())
223 strError = "Failed to commit transaction";
224 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
228 logger("POSTGRESQL_STORE: Current DB schema version: %d", version);
232 //-----------------------------------------------------------------------------