/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2009 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.replication.protocol;
|
|
import java.io.UnsupportedEncodingException;
|
import java.util.zip.DataFormatException;
|
import java.util.ArrayList;
|
import java.util.HashMap;
|
import java.util.Iterator;
|
import java.util.Set;
|
|
import org.opends.server.replication.common.ServerState;
|
import org.opends.server.protocols.asn1.ASN1Reader;
|
import org.opends.server.protocols.asn1.ASN1;
|
import org.opends.server.protocols.asn1.ASN1Writer;
|
import org.opends.server.replication.common.ChangeNumber;
|
import org.opends.server.types.ByteStringBuilder;
|
import org.opends.server.types.ByteString;
|
import org.opends.server.types.ByteSequenceReader;
|
|
/**
|
* This message is part of the replication protocol.
|
* RS1 sends a MonitorRequestMessage to RS2 to requests its monitoring
|
* informations.
|
* When RS2 receives a MonitorRequestMessage from RS1, RS2 responds with a
|
* MonitorMsg.
|
*/
|
public class MonitorMsg extends RoutableMsg
|
{
|
/**
|
* Data structure to manage the state and the approximation
|
* of the data of the first missing change for each LDAP server
|
* connected to a Replication Server.
|
*/
|
class ServerData
|
{
|
ServerState state;
|
Long approxFirstMissingDate;
|
}
|
|
/**
|
* Data structure to manage the state of this replication server
|
* and the state informations for the servers connected to it.
|
*
|
*/
|
class SubTopoMonitorData
|
{
|
// This replication server DbState
|
ServerState replServerDbState;
|
// The data related to the LDAP servers connected to this RS
|
HashMap<Short, ServerData> ldapStates =
|
new HashMap<Short, ServerData>();
|
// The data related to the RS servers connected to this RS
|
HashMap<Short, ServerData> rsStates =
|
new HashMap<Short, ServerData>();
|
}
|
|
SubTopoMonitorData data = new SubTopoMonitorData();
|
|
/**
|
* The protocolVersion that should be used when serializing this message.
|
*/
|
private final short protocolVersion;
|
|
/**
|
* Creates a new MonitorMsg.
|
*
|
* @param sender The sender of this message.
|
* @param destination The destination of this message.
|
*/
|
public MonitorMsg(short sender, short destination)
|
{
|
super(sender, destination);
|
protocolVersion = ProtocolVersion.getCurrentVersion();
|
}
|
|
|
/**
|
* Creates a new MonitorMsg with a specific protocol version.
|
*
|
* @param sender The sender of this message.
|
* @param destination The destination of this message.
|
* @param replicationProtocol The protocol version to use.
|
*/
|
public MonitorMsg(short sender, short destination,
|
short replicationProtocol)
|
{
|
super(sender, destination);
|
protocolVersion = replicationProtocol;
|
}
|
|
|
/**
|
* Sets the state of the replication server.
|
* @param state The state.
|
*/
|
public void setReplServerDbState(ServerState state)
|
{
|
data.replServerDbState = state;
|
}
|
|
/**
|
* Sets the informations of an LDAP server.
|
* @param serverId The serverID.
|
* @param state The server state.
|
* @param approxFirstMissingDate The approximation of the date
|
* of the older missing change. null when none.
|
* @param isLDAP Specifies whether the server is a LS or a RS
|
*/
|
public void setServerState(short serverId, ServerState state,
|
Long approxFirstMissingDate, boolean isLDAP)
|
{
|
if (data.ldapStates == null)
|
{
|
data.ldapStates = new HashMap<Short, ServerData>();
|
}
|
if (data.rsStates == null)
|
{
|
data.rsStates = new HashMap<Short, ServerData>();
|
}
|
ServerData sd = new ServerData();
|
sd.state = state;
|
sd.approxFirstMissingDate = approxFirstMissingDate;
|
if (isLDAP)
|
data.ldapStates.put(serverId, sd);
|
else
|
data.rsStates.put(serverId, sd);
|
}
|
|
/**
|
* Get the server state for the LDAP server with the provided serverId.
|
* @param serverId The provided serverId.
|
* @return The state.
|
*/
|
public ServerState getLDAPServerState(short serverId)
|
{
|
return data.ldapStates.get(serverId).state;
|
}
|
|
/**
|
* Get the server state for the RS server with the provided serverId.
|
* @param serverId The provided serverId.
|
* @return The state.
|
*/
|
public ServerState getRSServerState(short serverId)
|
{
|
return data.rsStates.get(serverId).state;
|
}
|
|
|
/**
|
* Get the approximation of the date of the older missing change for the
|
* LDAP Server with the provided server Id.
|
* @param serverId The provided serverId.
|
* @return The approximated state.
|
*/
|
public Long getLDAPApproxFirstMissingDate(short serverId)
|
{
|
return data.ldapStates.get(serverId).approxFirstMissingDate;
|
}
|
|
/**
|
* Get the approximation of the date of the older missing change for the
|
* RS Server with the provided server Id.
|
* @param serverId The provided serverId.
|
* @return The approximated state.
|
*/
|
public Long getRSApproxFirstMissingDate(short serverId)
|
{
|
return data.rsStates.get(serverId).approxFirstMissingDate;
|
}
|
|
/**
|
* Creates a new EntryMessage from its encoded form.
|
*
|
* @param in The byte array containing the encoded form of the message.
|
* @param version The version of the protocol to use to decode the msg.
|
* @throws DataFormatException If the byte array does not contain a valid
|
* encoded form of the ServerStartMessage.
|
*/
|
public MonitorMsg(byte[] in, short version) throws DataFormatException
|
{
|
protocolVersion = ProtocolVersion.getCurrentVersion();
|
ByteSequenceReader reader = ByteString.wrap(in).asReader();
|
|
if (version == ProtocolVersion.REPLICATION_PROTOCOL_V1)
|
{
|
try
|
{
|
/* first byte is the type */
|
if (in[0] != MSG_TYPE_REPL_SERVER_MONITOR)
|
throw new DataFormatException("input is not a valid " +
|
this.getClass().getCanonicalName());
|
int pos = 1;
|
|
// sender
|
int length = getNextLength(in, pos);
|
String senderIDString = new String(in, pos, length, "UTF-8");
|
this.senderID = Short.valueOf(senderIDString);
|
pos += length +1;
|
|
// destination
|
length = getNextLength(in, pos);
|
String destinationString = new String(in, pos, length, "UTF-8");
|
this.destination = Short.valueOf(destinationString);
|
pos += length +1;
|
|
reader.position(pos);
|
}
|
catch (UnsupportedEncodingException e)
|
{
|
throw new DataFormatException("UTF-8 is not supported by this jvm.");
|
}
|
}
|
else
|
{
|
if (reader.get() != MSG_TYPE_REPL_SERVER_MONITOR)
|
throw new DataFormatException("input is not a valid " +
|
this.getClass().getCanonicalName());
|
|
// sender
|
this.senderID = reader.getShort();
|
|
// destination
|
this.destination = reader.getShort();
|
}
|
|
|
ASN1Reader asn1Reader = ASN1.getReader(reader);
|
try
|
{
|
asn1Reader.readStartSequence();
|
// loop on the servers
|
while(asn1Reader.hasNextElement())
|
{
|
ServerState newState = new ServerState();
|
short serverId = 0;
|
Long outime = (long)0;
|
boolean isLDAPServer = false;
|
|
asn1Reader.readStartSequence();
|
// loop on the list of CN of the state
|
while(asn1Reader.hasNextElement())
|
{
|
String s = asn1Reader.readOctetStringAsString();
|
ChangeNumber cn = new ChangeNumber(s);
|
if ((data.replServerDbState != null) && (serverId == 0))
|
{
|
// we are on the first CN that is a fake CN to store the serverId
|
// and the older update time
|
serverId = cn.getServerId();
|
outime = cn.getTime();
|
isLDAPServer = (cn.getSeqnum()>0);
|
}
|
else
|
{
|
// we are on a normal CN
|
newState.update(cn);
|
}
|
}
|
asn1Reader.readEndSequence();
|
|
if (data.replServerDbState == null)
|
{
|
// the first state is the replication state
|
data.replServerDbState = newState;
|
}
|
else
|
{
|
// the next states are the server states
|
ServerData sd = new ServerData();
|
sd.state = newState;
|
sd.approxFirstMissingDate = outime;
|
if (isLDAPServer)
|
data.ldapStates.put(serverId, sd);
|
else
|
data.rsStates.put(serverId, sd);
|
}
|
}
|
asn1Reader.readEndSequence();
|
} catch(Exception e)
|
{
|
|
}
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public byte[] getBytes()
|
{
|
try
|
{
|
ByteStringBuilder byteBuilder = new ByteStringBuilder();
|
ASN1Writer writer = ASN1.getWriter(byteBuilder);
|
|
if (protocolVersion > ProtocolVersion.REPLICATION_PROTOCOL_V1)
|
{
|
/* put the type of the operation */
|
byteBuilder.append(MSG_TYPE_REPL_SERVER_MONITOR);
|
|
byteBuilder.append(senderID);
|
byteBuilder.append(destination);
|
}
|
|
/* Put the serverStates ... */
|
writer.writeStartSequence();
|
|
/* first put the Replication Server state */
|
writer.writeStartSequence();
|
ArrayList<ByteString> cnOctetList =
|
data.replServerDbState.toASN1ArrayList();
|
for (ByteString soci : cnOctetList)
|
{
|
writer.writeOctetString(soci);
|
}
|
writer.writeEndSequence();
|
|
// then the LDAP server datas
|
Set<Short> servers = data.ldapStates.keySet();
|
for (Short sid : servers)
|
{
|
ServerState statei = data.ldapStates.get(sid).state;
|
Long outime = data.ldapStates.get(sid).approxFirstMissingDate;
|
|
// retrieves the change numbers as an arrayList of ANSN1OctetString
|
cnOctetList = statei.toASN1ArrayList();
|
|
writer.writeStartSequence();
|
// a fake changenumber helps storing the LDAP server ID
|
ChangeNumber cn = new ChangeNumber(outime,1,sid);
|
writer.writeOctetString(cn.toString());
|
|
// the changenumbers that make the state
|
for (ByteString soci : cnOctetList)
|
{
|
writer.writeOctetString(soci);
|
}
|
|
writer.writeEndSequence();
|
}
|
|
// then the RS server datas
|
servers = data.rsStates.keySet();
|
for (Short sid : servers)
|
{
|
ServerState statei = data.rsStates.get(sid).state;
|
Long outime = data.rsStates.get(sid).approxFirstMissingDate;
|
|
// retrieves the change numbers as an arrayList of ANSN1OctetString
|
cnOctetList = statei.toASN1ArrayList();
|
|
writer.writeStartSequence();
|
// a fake changenumber helps storing the LDAP server ID
|
ChangeNumber cn = new ChangeNumber(outime,0,sid);
|
writer.writeOctetString(cn.toString());
|
|
// the changenumbers that make the state
|
for (ByteString soci : cnOctetList)
|
{
|
writer.writeOctetString(soci);
|
}
|
|
writer.writeEndSequence();
|
}
|
|
writer.writeEndSequence();
|
|
if (protocolVersion > ProtocolVersion.REPLICATION_PROTOCOL_V1)
|
{
|
return byteBuilder.toByteArray();
|
}
|
else
|
{
|
byte[] temp = byteBuilder.toByteArray();
|
|
byte[] senderBytes = String.valueOf(senderID).getBytes("UTF-8");
|
byte[] destinationBytes = String.valueOf(destination).getBytes("UTF-8");
|
|
int length = 1 + 1 + senderBytes.length +
|
1 + destinationBytes.length + temp.length +1;
|
byte[] resultByteArray = new byte[length];
|
|
/* put the type of the operation */
|
resultByteArray[0] = MSG_TYPE_REPL_SERVER_MONITOR;
|
int pos = 1;
|
|
pos = addByteArray(senderBytes, resultByteArray, pos);
|
pos = addByteArray(destinationBytes, resultByteArray, pos);
|
pos = addByteArray(temp, resultByteArray, pos);
|
|
return resultByteArray;
|
}
|
}
|
catch (Exception e)
|
{
|
return null;
|
}
|
}
|
|
/**
|
* Get the state of the replication server that sent this message.
|
* @return The state.
|
*/
|
public ServerState getReplServerDbState()
|
{
|
return data.replServerDbState;
|
}
|
|
/**
|
* Returns an iterator on the serverId of the connected LDAP servers.
|
* @return The iterator.
|
*/
|
public Iterator<Short> ldapIterator()
|
{
|
return data.ldapStates.keySet().iterator();
|
}
|
|
/**
|
* Returns an iterator on the serverId of the connected RS servers.
|
* @return The iterator.
|
*/
|
public Iterator<Short> rsIterator()
|
{
|
return data.rsStates.keySet().iterator();
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public String toString()
|
{
|
String stateS = "\nRState:[";
|
stateS += data.replServerDbState.toString();
|
stateS += "]";
|
|
stateS += "\nLDAPStates:[";
|
for (Short sid : data.ldapStates.keySet())
|
{
|
ServerData sd = data.ldapStates.get(sid);
|
stateS +=
|
"\n[LSstate("+ sid + ")=" +
|
sd.state.toString() + "]" +
|
" afmd=" + sd.approxFirstMissingDate + "]";
|
}
|
|
stateS += "\nRSStates:[";
|
for (Short sid : data.rsStates.keySet())
|
{
|
ServerData sd = data.rsStates.get(sid);
|
stateS +=
|
"\n[RSState("+ sid + ")=" +
|
sd.state.toString() + "]" +
|
" afmd=" + sd.approxFirstMissingDate + "]";
|
}
|
String me = this.getClass().getCanonicalName() +
|
"[ sender=" + this.senderID +
|
" destination=" + this.destination +
|
" data=[" + stateS + "]" +
|
"]";
|
return me;
|
}
|
}
|
