jgroup.relacs.mss
Class RoutingTable

java.lang.Object
  jgroup.relacs.mss.RoutingTable

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, MssConstants

public final class RoutingTable
extends java.lang.Object
implements MssConstants, java.io.Externalizable

The RoutingTable class

Since:

Jgroup 1.2

Author:

Salvatore Cammarata, Hein Meling

See Also:

Serialized Form

Field Summary

Fields inherited from interface jgroup.relacs.mss.MssConstants

ALL, EHANDLER_PRIORITY, HEADER_SIZE, MINIMUM_ALIVE_VALUE, MSS_HEADER_SIZE, MSSUSER_PRIORITY, NACKSUPPRESSION, NI_PRIORITY, OVERHEAD_SIZE, ROUTING_ENABLED, TRAILER_SIZE, UNDEF, UNREACHABLE

Constructor Summary

RoutingTable()
Default constructor for externalization

RoutingTable(jgroup.relacs.mss.ClusterTable ct, int threshold)

Method Summary

int	getMarshalSize() Returns the number of bytes required to marshal this routing table instance.
static int	getMaxSize(int numOfHosts, int numOfClusters) Returns the maximum number of bytes required to marshal a routing table instance, when the reachability set includes all hosts in the system.
void	readExternal(java.io.ObjectInput in) Restores the content of this object from the marshalled data contained in the specified input stream.
void	splitHorizonOff() Reverts all negative routing costs to positive.
void	splitHorizonOn(EndPoint key) Negate the cost as reverse poison
java.lang.String	toString() Returns a string representation of this object
boolean	updateReachability() Updates the reachability information for all clusters in the clustertable.
void	writeExternal(java.io.ObjectOutput out) Marshals the content of this object to the specified output stream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RoutingTable

public RoutingTable()

Default constructor for externalization

RoutingTable

public RoutingTable(jgroup.relacs.mss.ClusterTable ct,
                    int threshold)

Method Detail

getMarshalSize

public int getMarshalSize()

Returns the number of bytes required to marshal this routing table instance.

getMaxSize

public static int getMaxSize(int numOfHosts,
                             int numOfClusters)

Returns the maximum number of bytes required to marshal a routing table instance, when the reachability set includes all hosts in the system.

updateReachability

public boolean updateReachability()

Updates the reachability information for all clusters in the clustertable.

Returns:

true if the reachability information in the routing table was changed as a consequence of this invocation; false otherwise.

splitHorizonOn

public void splitHorizonOn(EndPoint key)

Negate the cost as reverse poison

splitHorizonOff

public void splitHorizonOff()

Reverts all negative routing costs to positive.

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Restores the content of this object from the marshalled data contained in the specified input stream.

Specified by:

readExternal in interface java.io.Externalizable

Parameters:

in - the stream to be read

Throws:

java.io.IOException

java.lang.ClassNotFoundException

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Marshals the content of this object to the specified output stream.

Specified by:

writeExternal in interface java.io.Externalizable

Parameters:

out - the stream to be written

Throws:

java.io.IOException

toString

public java.lang.String toString()

Returns a string representation of this object

Overrides:

toString in class java.lang.Object