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/*******************************************************************************
* Copyright (c) 2011 Gluster, Inc. <http://www.gluster.com>
* This file is part of Gluster Management Console.
*
* Gluster Management Console is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Gluster Management Console 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 Affero General Public License
* for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*******************************************************************************/
package org.gluster.storage.management.gateway.utils;
import java.util.List;
import org.gluster.storage.management.core.model.ServerStats;
import org.gluster.storage.management.core.model.ServerStatsRow;
import org.springframework.stereotype.Component;
/**
*
*/
@Component
public class MemoryStatsFactory extends AbstractStatsFactory {
private static final String MEM_STATS_SCRIPT = "get_rrd_memory_details.py";
@Override
public String getStatsScriptName() {
return MEM_STATS_SCRIPT;
}
@Override
public ServerStats fetchStats(String serverName, String period, String... args) {
ServerStats stats = super.fetchStats(serverName, period, args);
// stats returned by rrd script contains five columns - user, free, cache, buffer, total
// out of this, the "user" memory includes cached and buffer. We remove them to get the
// actual memory used by "user"
for(ServerStatsRow row : stats.getRows()) {
List<Double> data = row.getUsageData();
Double user = data.get(0);
Double free = data.get(1);
Double cache = data.get(2);
Double buffer = data.get(3);
Double total = data.get(4);
Double actualUser = user - cache - buffer;
// convert all figures from bytes to percentages
data.set(0, (actualUser * 100) / total);
data.set(1, (free * 100) / total);
data.set(2, (cache * 100) / total);
data.set(3, (buffer * 100) / total);
data.set(4, (total * 100) / total);
}
return stats;
}
}
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