Package org.apache.zookeeper.compat

Class ProtocolManager

java.lang.Object

org.apache.zookeeper.compat.ProtocolManager

public final class ProtocolManager
extends Object

A manager for switching behaviours between difference wire protocol.

Basically, wire protocol should be backward and forward compatible between minor versions. However, there are several cases that it's different due to Jute's limitations.

Constructor Summary

Constructors

Constructor	Description
ProtocolManager()

Method Summary

Modifier and Type	Method	Description
ConnectRequest	deserializeConnectRequest(InputArchive inputArchive)	Deserializing ConnectRequest should be specially handled for request from client version before and including ZooKeeper 3.3 which doesn't understand readOnly field.
ConnectResponse	deserializeConnectResponse(InputArchive inputArchive)	Deserializing ConnectResponse should be specially handled for response from server version before and including ZooKeeper 3.3 which doesn't understand readOnly field.
boolean	isReadonlyAvailable()
void	serializeConnectResponse(ConnectResponse response, OutputArchive outputArchive)	The serialization of ConnectResponse has to be handled specially as clients earlier than 3.5 might not expect the readOnly flag.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProtocolManager

public ProtocolManager()

Method Detail

isReadonlyAvailable

public boolean isReadonlyAvailable()

deserializeConnectRequest

public ConnectRequest deserializeConnectRequest(InputArchive inputArchive)
                                         throws IOException

Deserializing ConnectRequest should be specially handled for request from client version before and including ZooKeeper 3.3 which doesn't understand readOnly field.

Throws:

IOException

deserializeConnectResponse

public ConnectResponse deserializeConnectResponse(InputArchive inputArchive)
                                           throws IOException

Deserializing ConnectResponse should be specially handled for response from server version before and including ZooKeeper 3.3 which doesn't understand readOnly field.

Throws:

IOException

serializeConnectResponse

public void serializeConnectResponse(ConnectResponse response,
                                     OutputArchive outputArchive)
                              throws IOException

The serialization of ConnectResponse has to be handled specially as clients earlier than 3.5 might not expect the readOnly flag.

Parameters:

response - the response to serialize

outputArchive - the serialization destination

Throws:

IOException

See Also:

deserializeConnectRequest(InputArchive)