org.springframework.integration.support

Interface AcknowledgmentCallback

All Known Implementing Classes:

AmqpMessageSource.AmqpAckCallback

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface AcknowledgmentCallback

A general abstraction over acknowledgments.

Since:

5.0.1

Author:

Gary Russell

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	AcknowledgmentCallback.Status

Method Summary

Modifier and Type	Method and Description
void	acknowledge(AcknowledgmentCallback.Status status) Acknowledge the message.
default boolean	isAcknowledged() Implementations must implement this to indicate when the ack has been processed by the user so that the framework can auto-ack if needed.
default boolean	isAutoAck() Return true if this acknowledgment supports auto ack when it has not been already ack'd by the application.
default void	noAutoAck() Disable auto acknowledgment by a SourcePollingChannelAdapter or MessageSourcePollingTemplate.

Method Detail

acknowledge

void acknowledge(AcknowledgmentCallback.Status status)

Acknowledge the message.

Parameters:

status - the status.

isAcknowledged

default boolean isAcknowledged()

Implementations must implement this to indicate when the ack has been processed by the user so that the framework can auto-ack if needed.

Returns:

true if the message is already acknowledged.

noAutoAck

default void noAutoAck()

Disable auto acknowledgment by a SourcePollingChannelAdapter or MessageSourcePollingTemplate. Not all implementations support this - for example, the Kafka message source.

isAutoAck

default boolean isAutoAck()

Return true if this acknowledgment supports auto ack when it has not been already ack'd by the application.

Returns:

true if auto ack is supported.