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"))
70 //-----------------------------------------------------------------------------
71 POSTGRESQL_STORE::~POSTGRESQL_STORE()
78 //-----------------------------------------------------------------------------
79 int POSTGRESQL_STORE::ParseSettings()
81 std::vector<STG::ParamValue>::iterator i;
83 for(i = settings.moduleParams.begin(); i != settings.moduleParams.end(); ++i)
87 std::string s = ToLower(i->param);
90 server = i->value.front();
94 database = i->value.front();
98 user = i->value.front();
102 password = i->value.front();
106 if (str2x(i->value.front(), retries))
108 strError = "Invalid 'retries' value";
109 printfd(__FILE__, "POSTGRESQL_STORE::ParseSettings(): '%s'\n", strError.c_str());
115 clientEncoding = "KOI8";
119 //-----------------------------------------------------------------------------
120 int POSTGRESQL_STORE::Connect()
123 params = "host=" + server + " "
124 + "dbname=" + database + " "
125 + "user=" + user + " "
126 + "password=" + password;
128 connection = PQconnectdb(params.c_str());
130 if (PQstatus(connection) != CONNECTION_OK)
132 strError = PQerrorMessage(connection);
133 printfd(__FILE__, "POSTGRESQL_STORE::Connect(): '%s'\n", strError.c_str());
134 // Will try to connect later
138 if (PQsetClientEncoding(connection, clientEncoding.c_str()))
140 strError = PQerrorMessage(connection);
141 printfd(__FILE__, "POSTGRESQL_STORE::Connect(): '%s'\n", strError.c_str());
145 return CheckVersion();
147 //-----------------------------------------------------------------------------
148 int POSTGRESQL_STORE::Reset() const
150 for (int i = 0; i < retries && PQstatus(connection) != CONNECTION_OK; ++i)
152 struct timespec ts = {1, 0};
153 nanosleep(&ts, NULL);
157 if (PQstatus(connection) != CONNECTION_OK)
159 strError = PQerrorMessage(connection);
160 printfd(__FILE__, "POSTGRESQL_STORE::Reset(): '%s'\n", strError.c_str());
164 if (PQsetClientEncoding(connection, clientEncoding.c_str()))
166 strError = PQerrorMessage(connection);
167 printfd(__FILE__, "POSTGRESQL_STORE::Reset(): '%s'\n", strError.c_str());
171 return CheckVersion();
173 //-----------------------------------------------------------------------------
174 int POSTGRESQL_STORE::CheckVersion() const
177 if (StartTransaction())
179 strError = "Failed to start transaction";
180 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
184 PGresult * result = PQexec(connection, "SELECT MAX(version) FROM tb_info");
186 if (PQresultStatus(result) != PGRES_TUPLES_OK)
188 strError = PQresultErrorMessage(result);
190 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n");
191 RollbackTransaction();
195 if (str2x(PQgetvalue(result, 0, 0), version))
197 strError = "Invalid DB version";
199 RollbackTransaction();
200 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
206 if (version < DB_MIN_VERSION)
208 strError = "DB version too old";
209 RollbackTransaction();
210 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
216 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);
219 if (CommitTransaction())
221 strError = "Failed to commit transaction";
222 printfd(__FILE__, "POSTGRESQL_STORE::CheckVersion(): '%s'\n", strError.c_str());
226 logger("POSTGRESQL_STORE: Current DB schema version: %d", version);
230 //-----------------------------------------------------------------------------