/*
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* The contents of this file are subject to the terms of the
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* or http://forgerock.org/license/CDDLv1.0.html.
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* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at legal-notices/CDDLv1_0.txt.
* If applicable, add the following below this CDDL HEADER, with the
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*
* Copyright 2006-2010 Sun Microsystems, Inc.
* Portions Copyright 2014-2015 ForgeRock AS
*/
package org.opends.server.backends.jeb;
import static org.opends.server.util.StaticUtils.*;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.forgerock.i18n.slf4j.LocalizedLogger;
import org.forgerock.opendj.ldap.schema.Syntax;
import org.opends.server.admin.std.server.MonitorProviderCfg;
import org.opends.server.api.MonitorProvider;
import org.opends.server.core.DirectoryServer;
import org.opends.server.types.Attribute;
import org.opends.server.types.AttributeType;
import org.opends.server.types.Attributes;
import com.sleepycat.je.Environment;
import com.sleepycat.je.JEVersion;
import com.sleepycat.je.StatsConfig;
/** Monitoring class for JE, populating cn=monitor statistics using reflection on objects methods. */
final class JEMonitor extends MonitorProvider<MonitorProviderCfg>
{
private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
/** The name of this monitor instance. */
private final String name;
/** The environment to be monitored. */
private final Environment env;
JEMonitor(String name, Environment env)
{
this.name = name;
this.env = env;
}
@Override
public String getMonitorInstanceName()
{
return name;
}
@Override
public List<Attribute> getMonitorData()
{
try
{
List<Attribute> monitorAttrs = new ArrayList<>();
monitorAttrs.add(Attributes.create("JEVersion", JEVersion.CURRENT_VERSION.getVersionString()));
StatsConfig statsConfig = new StatsConfig();
addAttributesForStatsObject(monitorAttrs, "Environment", env.getStats(statsConfig));
addAttributesForStatsObject(monitorAttrs, "Transaction", env.getTransactionStats(statsConfig));
return monitorAttrs;
}
catch (Exception e)
{
logger.traceException(e);
return Collections.singletonList(Attributes.create("JEInfo", stackTraceToSingleLineString(e)));
}
}
private void addAttributesForStatsObject(List<Attribute> monitorAttrs, String attrPrefix, Object stats)
{
for (Method method : stats.getClass().getMethods())
{
final Class<?> returnType = method.getReturnType();
if (method.getName().startsWith("get")
&& (returnType.equals(int.class) || returnType.equals(long.class)))
{
addStatAttribute(monitorAttrs, attrPrefix, stats, method);
}
}
}
private void addStatAttribute(List<Attribute> monitorAttrs, String attrPrefix, Object stats, Method method)
{
final Syntax integerSyntax = DirectoryServer.getDefaultIntegerSyntax();
try
{
// Remove the 'get' from the method name and add the prefix.
String attrName = attrPrefix + method.getName().substring(3);
AttributeType attrType = DirectoryServer.getAttributeTypeOrDefault(attrName, attrName, integerSyntax);
monitorAttrs.add(Attributes.create(attrType, String.valueOf(method.invoke(stats))));
}
catch (Exception e)
{
logger.traceException(e);
}
}
}