/*
* 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 DataBaseMeasurementPlugin extends ResourceMeasurement {
private static Log log = LogFactory.getLog(DataBaseMeasurementPlugin.class);
@Override
protected String getQuery(Metric metric) {
String attributeName = metric.getAttributeName();
String db = metric.getObjectProperty(PostgreSQL.PROP_DB);
String serverQuery = null;
// Check metrics that require joins across tables.
if (attributeName.equals("DatabaseSize")) {
serverQuery = "SELECT pg_database_size(d.oid) "
+ "FROM pg_database d where datname='" + db + "'";
} else if (attributeName.equals("DataSpaceUsed")) {
// XXX assumes 8k page size. (which is the default)
serverQuery = "SELECT SUM(relpages) * 8 FROM pg_class WHERE "
+ "relname IN (SELECT relname from pg_stat_user_tables)";
} else if (attributeName.equals("IndexSpaceUsed")) {
serverQuery = "SELECT SUM(relpages) * 8 FROM pg_class WHERE "
+ "relname IN (SELECT indexrelname from "
+ "pg_stat_user_indexes)";
}
log.debug("[getQuery] serverQuery='" + serverQuery + "'");
return serverQuery;
}
}