ContextPreservingActionListener (server 6.5.2 API)

java.lang.Object
- org.elasticsearch.action.support.ContextPreservingActionListener<R>

All Implemented Interfaces:

ActionListener<R>
```
public final class ContextPreservingActionListener<R>
extends java.lang.Object
implements ActionListener<R>
```
Restores the given ThreadContext.StoredContext once the listener is invoked

Constructor Summary

Constructors
Constructor	Description
`ContextPreservingActionListener(java.util.function.Supplier<ThreadContext.StoredContext> contextSupplier, ActionListener<R> delegate)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`onFailure(java.lang.Exception e)`	A failure caused by an exception at some phase of the task.
`void`	`onResponse(R r)`	Handle action response.
`static <R> ContextPreservingActionListener<R>`	`wrapPreservingContext(ActionListener<R> listener, ThreadContext threadContext)`	Wraps the provided action listener in a `ContextPreservingActionListener` that will also copy the response headers when the `ThreadContext.StoredContext` is closed

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ContextPreservingActionListener
```
public ContextPreservingActionListener(java.util.function.Supplier<ThreadContext.StoredContext> contextSupplier,
                                       ActionListener<R> delegate)
```
- Method Detail
  - onResponse
```
public void onResponse(R r)
```
    Description copied from interface: ActionListener
    
    Handle action response. This response may constitute a failure or a success but it is up to the listener to make that decision.
    
    Specified by:
    
    onResponse in interface ActionListener<R>
  - onFailure
```
public void onFailure(java.lang.Exception e)
```
    Description copied from interface: ActionListener
    
    A failure caused by an exception at some phase of the task.
    
    Specified by:
    
    onFailure in interface ActionListener<R>
  - wrapPreservingContext
```
public static <R> ContextPreservingActionListener<R> wrapPreservingContext(ActionListener<R> listener,
                                                                           ThreadContext threadContext)
```
    Wraps the provided action listener in a ContextPreservingActionListener that will also copy the response headers when the ThreadContext.StoredContext is closed