RequestCallbackWithFailure (apache-cassandra API)

All Superinterfaces:

RequestCallback<T>

All Known Implementing Classes:

FailureRecordingCallback, PaxosCleanupComplete, PaxosCleanupSession, PaxosCommit, PaxosFinishPrepareCleanup, PaxosPrepare, PaxosPrepareRefresh, PaxosPropose, PaxosRequestCallback, PaxosStartPrepareCleanup
```
public interface RequestCallbackWithFailure<T>
extends RequestCallback<T>
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default boolean`	`invokeOnFailure()`	Returns true if the callback handles failure reporting - in which case the remove host will be asked to report failures to us in the event of a problem processing the request.
`void`	`onFailure(InetAddressAndPort from, RequestFailureReason failureReason)`	Called when there is an exception on the remote node or timeout happens

Methods inherited from interface org.apache.cassandra.net.RequestCallback
onResponse, trackLatencyForSnitch

- Method Detail
  - onFailure
```
void onFailure(InetAddressAndPort from,
               RequestFailureReason failureReason)
```
    Called when there is an exception on the remote node or timeout happens
    
    Specified by:
    
    onFailure in interface RequestCallback<T>
  - invokeOnFailure
```
default boolean invokeOnFailure()
```
    Description copied from interface: RequestCallback
    
    Returns true if the callback handles failure reporting - in which case the remove host will be asked to report failures to us in the event of a problem processing the request. TODO: this is an error prone method, and we should be handling failures everywhere so we should probably just start doing that, and remove this method
    
    Specified by:
    
    invokeOnFailure in interface RequestCallback<T>
    
    Returns:
    
    true if the callback should be invoked on failure