/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. This program is distributed
* in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.hq.plugin.postgresql;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperic.hq.product.Metric;
public class TableMeasurementPlugin extends ResourceMeasurement {
private static Log log = LogFactory.getLog(TableMeasurementPlugin.class);
@Override
protected String getQuery(Metric metric) {
String tableName = metric.getObjectProperties().getProperty(PostgreSQL.PROP_TABLE);
String schemaName = metric.getObjectProperties().getProperty(PostgreSQL.PROP_SCHEMA);
String attributeName = metric.getAttributeName();
if (metric.isAvail()) {
attributeName = "seq_scan";
}
String tableQuery = null;
if (attributeName.equals("DataSpaceUsed")) {
tableQuery = "SELECT SUM(relpages) * 8 FROM pg_class "
+ "JOIN pg_catalog.pg_namespace n ON n.oid = pg_class.relnamespace "
+ "WHERE pg_class.relname = '" + tableName + "' "
+ "AND n.nspname ='" + schemaName + "'";
} else if (attributeName.equals("IndexSpaceUsed")) {
tableQuery = "SELECT SUM(relpages) * 8 FROM pg_class "
+ "JOIN pg_catalog.pg_namespace n ON n.oid = pg_class.relnamespace "
+ "WHERE n.nspname = '" + schemaName + "' "
+ "AND relname IN (SELECT indexrelname FROM "
+ "pg_stat_user_indexes WHERE relname='"
+ tableName + "' AND schemaname='" + schemaName + "')";
} else {
// Else normal query from pg_stat_user_table
tableQuery = "SELECT " + attributeName + " FROM pg_stat_user_tables "
+ "WHERE relname='" + tableName + "' "
+ "AND schemaname='" + schemaName + "'";
}
log.debug("[getQuery] tableQuery='" + tableQuery + "'");
return tableQuery;
}
}