/*
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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 2006-2009 Sun Microsystems, Inc.
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*/
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package org.opends.server.replication.common;
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import java.util.Iterator;
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import java.util.TreeMap;
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/**
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* This object is used to store a list of ServerState object, one by
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* replication domain. Globally, it is the generalization of ServerState
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* (that applies to one domain) to a list of domains.
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*/
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public class MultiDomainServerState implements Iterable<String>
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{
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/**
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* The list of (domain service id, ServerState).
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*/
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private TreeMap<String, ServerState> list;
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/**
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* Creates a new empty object.
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*/
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public MultiDomainServerState()
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{
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list = new TreeMap<String, ServerState>();
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}
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/**
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* Empty the object..
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* After this call the object will be in the same state as if it
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* was just created.
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*/
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public void clear()
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{
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synchronized (this)
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{
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list.clear();
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}
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}
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/**
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* Update the ServerState of the provided serviceId with the
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* replication change number provided.
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*
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* @param serviceId The provided serviceId.
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* @param changeNumber The provided ChangeNumber.
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*
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* @return a boolean indicating if the update was meaningful.
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*/
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public boolean update(String serviceId, ChangeNumber changeNumber)
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{
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if (changeNumber == null)
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return false;
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synchronized(this)
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{
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Short serverId = changeNumber.getServerId();
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ServerState oldServerState = list.get(serviceId);
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if (oldServerState == null)
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oldServerState = new ServerState();
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if (changeNumber.newer(oldServerState.getMaxChangeNumber(serverId)))
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{
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oldServerState.update(changeNumber);
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list.put(serviceId,oldServerState);
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return true;
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}
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else
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{
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return false;
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}
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}
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}
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/**
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* Update the ServerState of the provided serviceId with the
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* provided server state.
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*
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* @param serviceId The provided serviceId.
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* @param serverState The provided serverState.
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*/
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public void update(String serviceId, ServerState serverState)
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{
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list.put(serviceId,serverState);
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}
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/**
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* Create an object from a string representation.
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* @param mdss The provided string representation of the state.
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*/
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public MultiDomainServerState(String mdss)
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{
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list = new TreeMap<String, ServerState>();
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if ((mdss != null) &&
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(mdss.length()>0))
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{
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String[] domains = mdss.split(";");
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for (String domain : domains)
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{
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String[] fields = domain.split(":");
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String name = fields[0];
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ServerState ss = new ServerState();
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if (fields.length>1)
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{
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String strState = fields[1].trim();
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String[] strCN = strState.split(" ");
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for (String sr : strCN)
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{
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ChangeNumber fromChangeNumber = new ChangeNumber(sr);
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ss.update(fromChangeNumber);
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}
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}
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this.list.put(name, ss);
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}
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}
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}
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/**
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* Returns a string representation of this object.
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* @return The string representation.
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*/
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public String toString()
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{
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String res = "";
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if ((list != null) && (!list.isEmpty()))
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{
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for (String serviceId : list.keySet())
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{
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ServerState ss = list.get(serviceId);
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res += serviceId + ":" + ss.toString();
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res += ";";
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}
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}
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return res;
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}
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/**
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* Dump a string representation in the provided buffer.
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* @param buffer The provided buffer.
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*/
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public void toString(StringBuilder buffer)
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{
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buffer.append(this.toString());
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}
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/**
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* Tests if the state is empty.
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*
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* @return True if the state is empty.
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*/
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public boolean isEmpty()
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{
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return list.isEmpty();
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}
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/**
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* {@inheritDoc}
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*/
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public Iterator<String> iterator()
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{
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return list.keySet().iterator();
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}
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/**
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* Test if this object equals the provided other object.
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* @param other The other object with which we want to test equality.
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* @return Returns True if this equals other, else return false.
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*/
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public boolean equalsTo(MultiDomainServerState other)
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{
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return ((this.cover(other)) && (other.cover(this)));
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}
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/**
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* Test if this object covers the provided covered object.
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* @param covered The provided object.
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* @return true when this covers the provided object.
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*/
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public boolean cover(MultiDomainServerState covered)
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{
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for (String serviceId : covered.list.keySet())
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{
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ServerState state = list.get(serviceId);
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ServerState coveredState = covered.list.get(serviceId);
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if ((coveredState == null) || (!state.cover(coveredState)))
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{
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return false;
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}
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}
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return true;
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}
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}
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