org.axonframework.disruptor.commandhandling

Class BlacklistDetectingCallback<C,R>

java.lang.Object

org.axonframework.disruptor.commandhandling.BlacklistDetectingCallback<C,R>

Type Parameters:

R - The return value of the Command

C - The type of payload of the dispatched command

All Implemented Interfaces:

CommandCallback<C,R>

public class BlacklistDetectingCallback<C,R>
extends Object
implements CommandCallback<C,R>

Wrapper for command handler Callbacks that detects blacklisted aggregates and starts a cleanup process when an aggregate is blacklisted.

Since:

2.0

Author:

Allard Buijze

Constructor Summary

Constructors

Constructor and Description
BlacklistDetectingCallback(CommandCallback<? super C,R> delegate, com.lmax.disruptor.RingBuffer<CommandHandlingEntry> ringBuffer, BiConsumer<CommandMessage<? extends C>,CommandCallback<? super C,R>> retryMethod, boolean rescheduleOnCorruptState) Initializes the callback which allows the given command to be rescheduled on the given ringBuffer if it failed due to a corrupt state.

Method Summary

Modifier and Type	Method and Description
boolean	hasDelegate() Indicates whether this callback has a delegate that needs to be notified of the command handling result
void	onResult(CommandMessage<? extends C> commandMessage, CommandResultMessage<? extends R> commandResultMessage) Invoked when command handling execution is completed.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlacklistDetectingCallback

public BlacklistDetectingCallback(CommandCallback<? super C,R> delegate,
                                  com.lmax.disruptor.RingBuffer<CommandHandlingEntry> ringBuffer,
                                  BiConsumer<CommandMessage<? extends C>,CommandCallback<? super C,R>> retryMethod,
                                  boolean rescheduleOnCorruptState)

Initializes the callback which allows the given command to be rescheduled on the given ringBuffer if it failed due to a corrupt state.

Parameters:

delegate - The callback to invoke when an exception occurred

ringBuffer - The RingBuffer on which an Aggregate Cleanup should be scheduled when a corrupted aggregate state was detected

retryMethod - The method to reschedule a command if it was executed on a corrupt aggregate

rescheduleOnCorruptState - Whether the command should be retried if it has been executed against corrupt state

Method Detail

onResult

public void onResult(CommandMessage<? extends C> commandMessage,
                     CommandResultMessage<? extends R> commandResultMessage)

Description copied from interface: CommandCallback

Invoked when command handling execution is completed.

Specified by:

onResult in interface CommandCallback<C,R>

Parameters:

commandMessage - the CommandMessage that was dispatched

commandResultMessage - the CommandResultMessage of the command handling execution

hasDelegate

public boolean hasDelegate()

Indicates whether this callback has a delegate that needs to be notified of the command handling result

Returns:

true if this callback has a delegate, otherwise false.