/*
* Copyright (c) 2005-2010 KOM – Multimedia Communications Lab
*
* This file is part of PeerfactSim.KOM.
*
* PeerfactSim.KOM is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* PeerfactSim.KOM 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 PeerfactSim.KOM. If not, see .
*
*/
package de.tud.kom.p2psim.impl.analyzer.metric.output;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.math.stat.descriptive.DescriptiveStatistics;
import de.tud.kom.p2psim.api.common.SimHost;
import de.tud.kom.p2psim.impl.util.db.dao.DAO;
import de.tud.kom.p2psim.impl.util.db.dao.metric.MeasurementDAO;
import de.tud.kom.p2psim.impl.util.db.metric.MetricDescription;
import de.tud.kom.p2psim.impl.util.oracle.GlobalOracle;
import de.tudarmstadt.maki.simonstrator.api.Time;
import de.tudarmstadt.maki.simonstrator.api.common.metric.ActiveMetric;
import de.tudarmstadt.maki.simonstrator.api.common.metric.ActiveMetric.ActiveMetricListener;
import de.tudarmstadt.maki.simonstrator.api.common.metric.Metric;
import de.tudarmstadt.maki.simonstrator.api.common.metric.Metric.MetricValue;
import de.tudarmstadt.maki.simonstrator.api.util.XMLConfigurableConstructor;
/**
* This class maps {@link Metric}s to calls to the DAO on regular intervals or
* special actions.
*
* @author Bjoern Richerzhagen
* @version 1.0, 13.08.2012
*/
public class MetricOutputDAO extends AbstractOutput {
protected long timeEnableDao = 0;
protected long timeStopDao = Long.MAX_VALUE;
protected Set metricsToAggregate = new LinkedHashSet<>();
/**
*
* @param table
*/
@XMLConfigurableConstructor({ "table" })
public MetricOutputDAO(String table) {
DAO.database = table;
}
public void setUser(String user) {
DAO.username = user;
}
public void setPassword(String password) {
DAO.password = password;
}
public void setTimeEnableDao(long timeEnableDao) {
this.timeEnableDao = timeEnableDao;
}
public void setTimeStopDao(long timeStopDao) {
this.timeStopDao = timeStopDao;
}
/**
* A list of PER-HOST metrics that are NOT written individually but instead
* statistical figures for a group of hosts is written. The group of hosts
* is defined by the hostGroup from the XML-config.
*
* @param metricsToAggregate
*/
public void setToAggregate(String[] metricsToAggregate) {
for (String metric : metricsToAggregate) {
this.metricsToAggregate.add(metric);
}
}
@Override
public void onInitialize(List metrics) {
for (Metric metric : metrics) {
/*
* Only active metrics are allowed. We register as a listener and
* wait for our call.
*/
if (metric instanceof ActiveMetric) {
ActiveMetric am = (ActiveMetric) metric;
am.addActiveMetricListener(new MetricDaoAdapter(am));
}
}
}
@Override
public void onStop() {
/*
* Commit missing values
*/
DAO.commitQueue();
}
/**
* This class helps in persisting a metric using the {@link MeasurementDAO}
*
* @author Bjoern Richerzhagen
* @version 1.0, 13.08.2012
*/
private class MetricDaoAdapter implements ActiveMetricListener {
private final ActiveMetric metric;
private final MetricDescription md;
private final MeasurementDAO dao = new MeasurementDAO();
private final List hosts;
private final boolean writeAggregates;
private final Map> hostsByGroup;
private long timestampLastEvent = -1;
public MetricDaoAdapter(ActiveMetric metric) {
this.metric = metric;
this.md = new MetricDescription(MetricOutputDAO.class.getName(),
metric.getName(), metric.getDescription(),
metric.getUnit().toString());
this.hosts = GlobalOracle.getHosts();
writeAggregates = metricsToAggregate.contains(metric.getName());
this.hostsByGroup = new LinkedHashMap<>();
for (SimHost simHost : hosts) {
String groupId = simHost.getProperties().getGroupID();
if (!this.hostsByGroup.containsKey(groupId)) {
this.hostsByGroup.put(groupId, new LinkedList<>());
}
this.hostsByGroup.get(groupId).add(simHost);
}
}
@Override
public void onMetricUpdate(ActiveMetric metric) {
long time = Time.getCurrentTime();
if (time < timeEnableDao || time > timeStopDao) {
return;
}
if (metric.isOverallMetric()) {
// global
MetricValue mv = metric.getOverallMetric();
Object val = mv.getValue();
if (mv.isValid()) {
if (val instanceof Number) {
double vd = ((Number) val).doubleValue();
dao.storeGlobalSingleMeasurement(md, time, vd);
}
}
} else {
// per-host metric
if (writeAggregates) {
/*
* Write aggregates instead of individual metric values.
* This can be improved w.r.t. performance, but currently we
* do not really care.
*/
// Iterate over groups
for (String group : hostsByGroup.keySet()) {
DescriptiveStatistics stats = new DescriptiveStatistics();
for (SimHost host : hostsByGroup.get(group)) {
MetricValue mv = metric
.getPerHostMetric(host.getId());
if (mv != null) {
Object val = mv.getValue();
if (mv.isValid()) {
if (val instanceof Number) {
double vd = ((Number) val)
.doubleValue();
if (Double.isNaN(vd)) {
continue;
}
// Add value
stats.addValue(vd);
}
}
}
}
// Write Group stats
long observationDuration = Time.getCurrentTime() - timestampLastEvent;
if (timestampLastEvent == -1) {
observationDuration = Time.getCurrentTime() - timeEnableDao;
}
MeasurementDAO.storeGroupStatisticsMeasurement(md,
group, time, stats, observationDuration, false);
}
timestampLastEvent = Time.getCurrentTime();
} else {
for (SimHost host : hosts) {
MetricValue mv = metric.getPerHostMetric(host.getId());
if (mv != null) {
Object val = mv.getValue();
if (mv.isValid()) {
if (val instanceof Number) {
double vd = ((Number) val).doubleValue();
if (Double.isNaN(vd)) {
continue;
}
dao.storeSingleMeasurement(md,
host.getHostId(), time, vd);
}
}
}
}
}
}
}
}
}