org.jgroups.protocols
Class FD.FdHeader

java.lang.Object
  org.jgroups.Header
      org.jgroups.protocols.FD.FdHeader

All Implemented Interfaces:

Streamable

Enclosing class:

FD

public static class FD.FdHeader
extends Header

Field Summary

protected Address	from
static byte	HEARTBEAT
static byte	HEARTBEAT_ACK
protected java.util.Collection<Address>	mbrs
static byte	SUSPECT
protected byte	type

Constructor Summary

FD.FdHeader()

FD.FdHeader(byte type)

FD.FdHeader(byte type, java.util.Collection<Address> mbrs, Address from)

Method Summary

void	readFrom(java.io.DataInput in) Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
int	size() To be implemented by subclasses.
java.lang.String	toString()
void	writeTo(java.io.DataOutput out) Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class java.lang.Object

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

Field Detail

HEARTBEAT

public static final byte HEARTBEAT

See Also:

Constant Field Values

HEARTBEAT_ACK

public static final byte HEARTBEAT_ACK

See Also:

Constant Field Values

SUSPECT

public static final byte SUSPECT

See Also:

Constant Field Values

type

protected byte type

mbrs

protected java.util.Collection<Address> mbrs

from

protected Address from

Constructor Detail

FD.FdHeader

public FD.FdHeader()

FD.FdHeader

public FD.FdHeader(byte type)

FD.FdHeader

public FD.FdHeader(byte type,
                   java.util.Collection<Address> mbrs,
                   Address from)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class Header

size

public int size()

Description copied from class: Header

To be implemented by subclasses. Return the size of this object for the serialized version of it. I.e. how many bytes this object takes when flattened into a buffer. This may be different for each instance, or can be the same. This may also just be an estimation. E.g. FRAG uses it on Message to determine whether or not to fragment the message. Fragmentation itself will be accurate, because the entire message will actually be serialized into a byte buffer, so we can determine the exact size.

Specified by:

size in class Header

writeTo

public void writeTo(java.io.DataOutput out)
             throws java.lang.Exception

Description copied from interface: Streamable

Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

Throws:

java.lang.Exception

readFrom

public void readFrom(java.io.DataInput in)
              throws java.lang.Exception

Description copied from interface: Streamable

Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

Throws:

java.lang.Exception