/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2015 ForgeRock AS.
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*/
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package org.opends.server.backends.pdb;
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import static org.opends.server.util.StaticUtils.*;
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import java.lang.reflect.Method;
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import java.rmi.RemoteException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.opends.server.admin.std.server.MonitorProviderCfg;
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import org.opends.server.api.MonitorProvider;
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import org.opends.server.types.Attribute;
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import org.opends.server.types.Attributes;
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import com.persistit.Management.BufferPoolInfo;
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import com.persistit.Management.TreeInfo;
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import com.persistit.Management.VolumeInfo;
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import com.persistit.Management.WrappedRemoteException;
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import com.persistit.Persistit;
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/** Monitoring class for PDB, populating cn=monitor statistics using reflection on objects methods. */
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class PDBMonitor extends MonitorProvider<MonitorProviderCfg>
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{
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private final String name;
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private final Persistit db;
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PDBMonitor(String name, Persistit db)
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{
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this.name = name;
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this.db = db;
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}
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@Override
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public String getMonitorInstanceName()
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{
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return name;
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}
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@Override
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public List<Attribute> getMonitorData()
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{
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try
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{
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List<Attribute> monitorAttrs = new ArrayList<>();
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monitorAttrs.add(Attributes.create("PDBVersion", db.getManagement().getVersion()));
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for(BufferPoolInfo bufferInfo : db.getManagement().getBufferPoolInfoArray())
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{
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addAttributesForStatsObject(monitorAttrs, "PDBBuffer", bufferInfo);
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}
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addAttributesForStatsObject(monitorAttrs, "PDBJournal", db.getManagement().getJournalInfo());
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addAttributesForStatsObject(monitorAttrs, "PDBTransaction", db.getManagement().getTransactionInfo());
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for (VolumeInfo vol : db.getManagement().getVolumeInfoArray())
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{
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addAttributesForStatsObject(monitorAttrs, "PDBVolume", vol);
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for (TreeInfo tree : db.getManagement().getTreeInfoArray(vol.getName()))
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{
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// For the time being, depth is not reported.
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monitorAttrs.add(Attributes.create("PDBVolumeTree", vol.getName() + tree.getName()
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+ ", traverse=" + tree.getTraverseCounter()
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+ ", fetch=" + tree.getFetchCounter()
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+ ", store=" + tree.getStoreCounter()
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+ ", remove=" + tree.getRemoveCounter()));
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}
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}
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return monitorAttrs;
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}
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catch (RemoteException e)
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{
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return Collections.singletonList(Attributes.create("PDBInfo", stackTraceToSingleLineString(e)));
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}
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}
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private void addAttributesForStatsObject(List<Attribute> monitorAttrs, String attrPrefix, Object stats)
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throws RemoteException
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{
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for (Method method : stats.getClass().getMethods())
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{
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if (method.getName().startsWith("get"))
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{
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Class<?> returnType = method.getReturnType();
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if (returnType.equals(int.class) || returnType.equals(long.class) || returnType.equals(String.class))
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{
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addStatAttribute(monitorAttrs, attrPrefix, stats, method, 3);
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}
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}
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else if (method.getName().startsWith("is") && method.getReturnType().equals(boolean.class))
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{
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addStatAttribute(monitorAttrs, attrPrefix, stats, method, 2);
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}
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}
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}
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private void addStatAttribute(List<Attribute> monitorAttrs, String attrPrefix, Object stats,
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Method method, int skipNameLen) throws WrappedRemoteException
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{
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try
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{
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String attrName = attrPrefix + method.getName().substring(skipNameLen);
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monitorAttrs.add(Attributes.create(attrName, String.valueOf(method.invoke(stats))));
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}
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catch (Exception e)
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{
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throw new WrappedRemoteException(e);
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}
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}
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}
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