Package org.cometd.bayeux.server

Interface BayeuxServer.Extension

All Known Implementing Classes:

AcknowledgedMessagesExtension, ActivityExtension, BinaryExtension, TimestampExtension, TimesyncExtension

Enclosing interface:

BayeuxServer

public static interface BayeuxServer.Extension

Extension API for BayeuxServer.

Implementations of this interface allow to modify incoming and outgoing messages before any other processing performed by the implementation.

Multiple extensions can be registered; the extension receive methods are invoked in registration order, while the extension send methods are invoked in registration reverse order.

See Also:

BayeuxServer.addExtension(Extension)

Method Summary

Modifier and Type	Method	Description
default void	incoming(ServerSession from, ServerMessage.Mutable message, Promise<Boolean> promise)	Callback method invoked every time a message is incoming.
default void	outgoing(ServerSession from, ServerSession to, ServerMessage.Mutable message, Promise<Boolean> promise)	Callback method invoked every time a message is outgoing.
default boolean	rcv(ServerSession from, ServerMessage.Mutable message)	Blocking version of incoming(ServerSession, ServerMessage.Mutable, Promise) for non-meta messages.
default boolean	rcvMeta(ServerSession from, ServerMessage.Mutable message)	Blocking version of incoming(ServerSession, ServerMessage.Mutable, Promise) for meta messages.
default boolean	send(ServerSession from, ServerSession to, ServerMessage.Mutable message)	Blocking version of outgoing(ServerSession, ServerSession, ServerMessage.Mutable, Promise) for non-meta messages.
default boolean	sendMeta(ServerSession to, ServerMessage.Mutable message)	Blocking version of outgoing(ServerSession, ServerSession, ServerMessage.Mutable, Promise) for meta messages.

Method Details

incoming

default void incoming(ServerSession from,
 ServerMessage.Mutable message,
 Promise<Boolean> promise)

Callback method invoked every time a message is incoming.

Parameters:

from - the session that sent the message

message - the incoming message

promise - the promise to notify whether message processing should continue

rcv

default boolean rcv(ServerSession from,
 ServerMessage.Mutable message)

Blocking version of incoming(ServerSession, ServerMessage.Mutable, Promise) for non-meta messages.

Parameters:

from - the session that sent the message

message - the incoming message

Returns:

whether message processing should continue

rcvMeta

default boolean rcvMeta(ServerSession from,
 ServerMessage.Mutable message)

Blocking version of incoming(ServerSession, ServerMessage.Mutable, Promise) for meta messages.

Parameters:

from - the session that sent the message

message - the incoming message

Returns:

whether message processing should continue

outgoing

default void outgoing(ServerSession from,
 ServerSession to,
 ServerMessage.Mutable message,
 Promise<Boolean> promise)

Callback method invoked every time a message is outgoing.

Parameters:

from - the session that sent the message or null

to - the session the message is sent to, or null for a publish.

message - the outgoing message

promise - the promise to notify whether message processing should continue

send

default boolean send(ServerSession from,
 ServerSession to,
 ServerMessage.Mutable message)

Blocking version of outgoing(ServerSession, ServerSession, ServerMessage.Mutable, Promise) for non-meta messages.

Parameters:

from - the session that sent the message or null

to - the session the message is sent to, or null for a publish.

message - the outgoing message

Returns:

whether message processing should continue

sendMeta

default boolean sendMeta(ServerSession to,
 ServerMessage.Mutable message)

Blocking version of outgoing(ServerSession, ServerSession, ServerMessage.Mutable, Promise) for meta messages.

Parameters:

to - the session the message is sent to, or null for a publish.

message - the outgoing message

Returns:

whether message processing should continue