All Superinterfaces:
ChannelInterceptor
```
public interface ExecutorChannelInterceptor
extends ChannelInterceptor
```
An extension of ChannelInterceptor with callbacks to intercept the asynchronous sending of a Message to a specific subscriber through an Executor. Supported on MessageChannel implementations that can be configured with an Executor.
Since:
4.1
Author:
Rossen Stoyanchev
See Also:
Message, MessageChannel, MessageHandler

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`afterMessageHandled(Message<?> message, MessageChannel channel, MessageHandler handler, Exception ex)`	Invoked inside the `Runnable` submitted to the Executor after calling the target MessageHandler regardless of the outcome (i.e.
`default Message<?>`	`beforeHandle(Message<?> message, MessageChannel channel, MessageHandler handler)`	Invoked inside the `Runnable` submitted to the Executor just before calling the target MessageHandler to handle the message.

Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor
afterReceiveCompletion, afterSendCompletion, postReceive, postSend, preReceive, preSend

- Method Detail
  - beforeHandle
```
@Nullable
default Message<?> beforeHandle(Message<?> message,
                                MessageChannel channel,
                                MessageHandler handler)
```
    Invoked inside the Runnable submitted to the Executor just before calling the target MessageHandler to handle the message. Allows for modification of the Message if necessary or when null is returned the MessageHandler is not invoked.
    Parameters:
    message - the message to be handled
    channel - the channel on which the message was sent to
    handler - the target handler to handle the message
    Returns:
    the input message, or a new instance, or null
  - afterMessageHandled
```
default void afterMessageHandled(Message<?> message,
                                 MessageChannel channel,
                                 MessageHandler handler,
                                 @Nullable
                                 Exception ex)
```
    Invoked inside the Runnable submitted to the Executor after calling the target MessageHandler regardless of the outcome (i.e. Exception raised or not) thus allowing for proper resource cleanup.
    Note that this will be invoked only if beforeHandle successfully completed and returned a Message, i.e. it did not return null.
    Parameters:
    message - the message handled
    channel - the channel on which the message was sent to
    handler - the target handler that handled the message
    ex - any exception that may been raised by the handler

Interface ExecutorChannelInterceptor

Method Summary

Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor

Method Detail

beforeHandle

afterMessageHandled