/*
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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 legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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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 legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* 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 2008-2010 Sun Microsystems, Inc.
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* Portions Copyright 2011-2014 ForgeRock AS
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*/
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package org.opends.server.replication.server;
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import java.util.ArrayList;
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import java.util.Date;
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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.config.ConfigException;
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import org.opends.server.core.DirectoryServer;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.opends.server.replication.common.DSInfo;
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import org.opends.server.replication.common.ServerState;
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import org.opends.server.types.Attribute;
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import org.opends.server.types.AttributeBuilder;
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import org.opends.server.types.Attributes;
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import org.opends.server.types.InitializationException;
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/**
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* This class defines a server handler dedicated to the remote LDAP servers
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* connected to a remote Replication Server.
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* This class is necessary because we want to provide monitor entries for them
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* and because the monitor API only allows one entry by MonitorProvider instance
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* so that no other class can provide the monitor entry for these objects.
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*
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* One instance of this class is created for each instance of remote LDAP server
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* connected to a remote Replication Server.
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*/
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public class LightweightServerHandler
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extends MonitorProvider<MonitorProviderCfg>
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{
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/** The tracer object for the debug logger. */
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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private final ReplicationServerHandler replServerHandler;
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/** All the information for this DS. */
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private final DSInfo dsInfo;
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/**
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* Creates a new LightweightServerHandler with the provided serverId,
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* connected to the remote Replication Server represented by
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* replServerHandler.
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*
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* @param replServerHandler
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* The server handler of the RS this remote DS is connected to
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* @param dsInfo
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* all the info for the represented DS
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*/
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public LightweightServerHandler(ReplicationServerHandler replServerHandler,
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DSInfo dsInfo)
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{
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this.replServerHandler = replServerHandler;
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this.dsInfo = dsInfo;
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if (logger.isTraceEnabled())
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debugInfo("()");
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}
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/**
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* Creates a DSInfo structure representing this remote DS.
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* @return The DSInfo structure representing this remote DS
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*/
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public DSInfo toDSInfo()
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{
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return dsInfo;
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}
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/**
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* Get the serverID associated with this LDAP server / directory server.
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*
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* @return The serverId.
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*/
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public int getServerId()
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{
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return dsInfo.getDsId();
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}
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/**
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* Start this server handler processing.
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*/
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public void startHandler()
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{
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if (logger.isTraceEnabled())
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debugInfo("start");
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DirectoryServer.deregisterMonitorProvider(this);
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DirectoryServer.registerMonitorProvider(this);
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}
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/**
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* Stop this server handler processing.
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*/
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public void stopHandler()
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{
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if (logger.isTraceEnabled())
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debugInfo("stop");
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DirectoryServer.deregisterMonitorProvider(this);
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}
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private void debugInfo(String message)
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{
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final ReplicationServerDomain domain = replServerHandler.getDomain();
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logger.trace("In " + domain.getLocalRSMonitorInstanceName()
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+ " LWSH for remote server " + getServerId() + " connected to:"
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+ replServerHandler.getMonitorInstanceName() + " " + message);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void initializeMonitorProvider(MonitorProviderCfg configuration)
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throws ConfigException,InitializationException
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{
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// Nothing to do for now
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}
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/**
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* Retrieves the name of this monitor provider. It should be unique among all
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* monitor providers, including all instances of the same monitor provider.
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*
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* @return The name of this monitor provider.
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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 "Connected directory server DS(" + dsInfo.getDsId() + ") "
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+ dsInfo.getDsUrl()
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+ ",cn=" + replServerHandler.getMonitorInstanceName();
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}
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/**
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* Retrieves a set of attributes containing monitor data that should be
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* returned to the client if the corresponding monitor entry is requested.
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*
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* @return A set of attributes containing monitor data that should be
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* returned to the client if the corresponding monitor entry is
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* requested.
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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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List<Attribute> attributes = new ArrayList<Attribute>();
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final int serverId = dsInfo.getDsId();
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final ReplicationServerDomain domain = replServerHandler.getDomain();
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attributes.add(Attributes.create("server-id", String.valueOf(serverId)));
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attributes.add(Attributes.create("domain-name",
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domain.getBaseDN().toNormalizedString()));
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attributes.add(Attributes.create("connected-to",
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replServerHandler.getMonitorInstanceName()));
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// Retrieves the topology counters
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final ReplicationDomainMonitorData md = domain.getDomainMonitorData();
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ServerState remoteState = md.getLDAPServerState(serverId);
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if (remoteState == null)
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{
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remoteState = new ServerState();
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}
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// get the Server State
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AttributeBuilder builder = new AttributeBuilder("server-state");
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for (String str : remoteState.toStringSet())
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{
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builder.add(str);
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}
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if (builder.size() == 0)
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{
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builder.add("unknown");
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}
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attributes.add(builder.toAttribute());
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// Oldest missing update
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long approxFirstMissingDate = md.getApproxFirstMissingDate(serverId);
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if (approxFirstMissingDate > 0)
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{
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Date date = new Date(approxFirstMissingDate);
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attributes.add(Attributes.create(
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"approx-older-change-not-synchronized", date.toString()));
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attributes.add(Attributes.create(
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"approx-older-change-not-synchronized-millis", String
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.valueOf(approxFirstMissingDate)));
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}
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// Missing changes
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long missingChanges = md.getMissingChanges(serverId);
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attributes.add(Attributes.create("missing-changes",
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String.valueOf(missingChanges)));
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// Replication delay
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long delay = md.getApproxDelay(serverId);
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attributes.add(Attributes.create("approximate-delay",
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String.valueOf(delay)));
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return attributes;
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}
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}
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