```
public interface TransactionOutboxListener
```
A listener for events fired by TransactionOutbox.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface TransactionOutboxListener.Invocator

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default TransactionOutboxListener`	`andThen(TransactionOutboxListener other)`	Chains this listener with another and returns the result.
`default void`	`blocked(TransactionOutboxEntry entry, Throwable cause)`	Fired when a transaction outbox task has passed the maximum number of retries and has been blocked.
`default void`	`failure(TransactionOutboxEntry entry, Throwable cause)`	Fired when a transaction outbox task fails.
`default void`	`scheduled(TransactionOutboxEntry entry)`	Fired when a transaction outbox task is scheduled.
`default void`	`success(TransactionOutboxEntry entry)`	Fired when a transaction outbox task is successfully completed and recorded as such in the database such that it will not be re-attempted.
`default void`	`wrapInvocation(TransactionOutboxListener.Invocator invocator)`	Implement this method to intercept and decorate all outbox invocations.

- Method Detail
  - scheduled
```
default void scheduled(TransactionOutboxEntry entry)
```
    Fired when a transaction outbox task is scheduled.
    This event is not guaranteed to fire in the event of a JVM failure or power loss. It is fired after the commit to the database adding the scheduled task but before the task is submitted for processing. It will, except in extreme circumstances (although this is not guaranteed), fire prior to any subsequent success(TransactionOutboxEntry) or failure(TransactionOutboxEntry, Throwable).
    
    Parameters:
    
    entry - The outbox entry scheduled.
  - wrapInvocation
```
default void wrapInvocation(TransactionOutboxListener.Invocator invocator)
                     throws IllegalAccessException,
                            IllegalArgumentException,
                            InvocationTargetException
```
    Implement this method to intercept and decorate all outbox invocations. In general, you should call invocation.run() which actually calls the underlying method, unless you are deliberately trying to suppress the method call.
    
    Parameters:
    
    invocator - A runnable which performs the work of the scheduled task.
    
    Throws:
    
    IllegalAccessException - If thrown by the method invocation.
    
    IllegalArgumentException - If thrown by the method invocation.
    
    InvocationTargetException - If thrown by the method invocation.
  - success
```
default void success(TransactionOutboxEntry entry)
```
    Fired when a transaction outbox task is successfully completed and recorded as such in the database such that it will not be re-attempted. Note that:
    
    TransactionOutbox uses "at least once" semantics, so the actual processing of a task may complete any number of times before this event is fired.
    This event is not guaranteed to fire in the event of a JVM failure or power loss. It is fired after the commit to the database removing the completed task and all bets are off after this point.
    Parameters:
    
    entry - The outbox entry completed.
  - failure
```
default void failure(TransactionOutboxEntry entry,
                     Throwable cause)
```
    Fired when a transaction outbox task fails. This may occur multiple times until the maximum number of retries, at which point this will be fired and then blocked(TransactionOutboxEntry, Throwable). This event is not guaranteed to fire in the event of a JVM failure or power loss. It is fired after the commit to the database marking the task as failed.
    
    Parameters:
    
    entry - The outbox entry failed.
    
    cause - The cause of the most recent failure.
  - blocked
```
default void blocked(TransactionOutboxEntry entry,
                     Throwable cause)
```
    Fired when a transaction outbox task has passed the maximum number of retries and has been blocked. This event is not guaranteed to fire in the event of a JVM failure or power loss. It is fired after the commit to the database marking the task as blocked.
    
    Parameters:
    
    entry - The outbox entry to be marked as blocked.
    
    cause - The cause of the most recent failure.
  - andThen
```
default TransactionOutboxListener andThen(TransactionOutboxListener other)
```
    Chains this listener with another and returns the result.
    
    Parameters:
    
    other - The other listener. It will always be called after this one.
    
    Returns:
    
    The combined listener.

Interface TransactionOutboxListener

Nested Class Summary

Method Summary

Method Detail

scheduled

wrapInvocation

success

failure

blocked

andThen