/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2010 Sun Microsystems, Inc.
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*/
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package org.opends.server.monitors;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import static org.opends.server.util.ServerConstants.*;
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import java.util.LinkedList;
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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.Backend;
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import org.opends.server.api.MonitorProvider;
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import org.opends.server.loggers.debug.DebugTracer;
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import org.opends.server.schema.BooleanSyntax;
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import org.opends.server.types.*;
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/**
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* This class implements a monitor provider that will report generic information
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* for an enabled Directory Server backend, including its backend ID, base DNs,
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* writability mode, and the number of entries it contains.
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*/
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public class BackendMonitor
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extends MonitorProvider<MonitorProviderCfg>
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{
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// The attribute type that will be used to report the backend ID.
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private AttributeType backendIDType;
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// The attribute type that will be used to report the set of base DNs.
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private AttributeType baseDNType;
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// The attribute type that will be used to report the number of entries.
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private AttributeType entryCountType;
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// The attribute type that will be used to report the number of entries per
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// base DN.
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private AttributeType baseDNEntryCountType;
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// The attribute type that will be used to indicate if a backend is private.
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private AttributeType isPrivateType;
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// The attribute type that will be used to report the writability mode.
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private AttributeType writabilityModeType;
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// The backend with which this monitor is associated.
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private Backend backend;
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// The name for this monitor.
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private String monitorName;
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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/**
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* Creates a new instance of this backend monitor provider that will work with
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* the provided backend. Most of the initialization should be handled in the
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* {@code initializeMonitorProvider} method.
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*
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* @param backend The backend with which this monitor is associated.
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*/
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public BackendMonitor(Backend backend)
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{
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this.backend = backend;
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}
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/**
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* {@inheritDoc}
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*/
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public void initializeMonitorProvider(MonitorProviderCfg configuration)
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{
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monitorName = backend.getBackendID() + " Backend";
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backendIDType = DirectoryConfig.getAttributeType(ATTR_MONITOR_BACKEND_ID,
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true);
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baseDNType = DirectoryConfig.getAttributeType(ATTR_MONITOR_BACKEND_BASE_DN,
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true);
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entryCountType =
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DirectoryConfig.getAttributeType(ATTR_MONITOR_BACKEND_ENTRY_COUNT,
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true);
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baseDNEntryCountType =
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DirectoryConfig.getAttributeType(ATTR_MONITOR_BASE_DN_ENTRY_COUNT,
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true);
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isPrivateType =
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DirectoryConfig.getAttributeType(ATTR_MONITOR_BACKEND_IS_PRIVATE,
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true);
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writabilityModeType =
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DirectoryConfig.getAttributeType(ATTR_MONITOR_BACKEND_WRITABILITY_MODE,
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true);
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}
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/**
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* {@inheritDoc}
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*/
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public String getMonitorInstanceName()
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{
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return monitorName;
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}
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/**
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* Retrieves the objectclass that should be included in the monitor entry
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* created from this monitor provider.
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*
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* @return The objectclass that should be included in the monitor entry
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* created from this monitor provider.
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*/
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public ObjectClass getMonitorObjectClass()
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{
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return DirectoryConfig.getObjectClass(OC_MONITOR_BACKEND, true);
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}
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/**
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* {@inheritDoc}
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*/
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public List<Attribute> getMonitorData()
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{
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LinkedList<Attribute> attrs = new LinkedList<Attribute>();
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attrs.add(Attributes.create(backendIDType, backend.getBackendID()));
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AttributeBuilder builder = new AttributeBuilder(baseDNType);
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DN[] baseDNs = backend.getBaseDNs();
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for (DN dn : baseDNs)
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{
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builder.add(AttributeValues.create(baseDNType, dn.toString()));
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}
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attrs.add(builder.toAttribute());
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attrs.add(Attributes.create(isPrivateType, BooleanSyntax
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.createBooleanValue(backend.isPrivateBackend())));
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long backendCount = backend.getEntryCount();
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attrs.add(Attributes.create(entryCountType, String
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.valueOf(backendCount)));
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builder = new AttributeBuilder(baseDNEntryCountType);
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if (baseDNs.length != 1)
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{
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for (DN dn : baseDNs)
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{
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long entryCount = -1;
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try
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{
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entryCount = backend.numSubordinates(dn, true) + 1;
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}
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catch (Exception ex)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, ex);
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}
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}
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String s = entryCount + " " + dn.toString();
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builder.add(AttributeValues.create(baseDNEntryCountType, s));
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}
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}
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else
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{
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// This is done to avoid recalculating the number of entries
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// using the numSubordinates method in the case where the
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// backend has a single base DN.
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String s = backendCount + " " + baseDNs[0].toString();
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builder.add(AttributeValues.create(baseDNEntryCountType, s));
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}
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attrs.add(builder.toAttribute());
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attrs.add(Attributes.create(writabilityModeType, String
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.valueOf(backend.getWritabilityMode())));
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return attrs;
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}
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}
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