AttributePollHandler (Apache Brooklyn)

Apache Brooklyn

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Summary:
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Method

Detail:
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java.lang.Object
- org.apache.brooklyn.core.feed.AttributePollHandler<V>

All Implemented Interfaces:

PollHandler<V>
```
public class AttributePollHandler<V>
extends java.lang.Object
implements PollHandler<V>
```
Handler for when polling an entity's attribute. On each poll result the entity's attribute is set. Calls to onSuccess and onError will happen sequentially, but may be called from different threads each time. Note that no guarantees of a synchronized block exist, so additional synchronization would be required for the Java memory model's "happens before" relationship.

Field Summary

Fields
Modifier and Type Field and Description

static org.slf4j.Logger log

Constructor Summary

Constructors
Constructor and Description

AttributePollHandler(FeedConfig<V,?,?> config, EntityLocal entity, AbstractFeed feed)

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`checkSuccess(V val)`
`java.lang.String`	`getDescription()`
`void`	`onException(java.lang.Exception exception)`
`void`	`onFailure(V val)`
`void`	`onSuccess(V val)`
`java.lang.String`	`toString()`

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

Field Detail

log

public static final org.slf4j.Logger log

Constructor Detail

AttributePollHandler

public AttributePollHandler(FeedConfig<V,?,?> config,
                    EntityLocal entity,
                    AbstractFeed feed)

Method Detail
- checkSuccess
```
public boolean checkSuccess(V val)
```
  Specified by:
  
  checkSuccess in interface PollHandler<V>
- onSuccess
```
public void onSuccess(V val)
```
  Specified by:
  
  onSuccess in interface PollHandler<V>
- onFailure
```
public void onFailure(V val)
```
  Specified by:
  
  onFailure in interface PollHandler<V>
- onException
```
public void onException(java.lang.Exception exception)
```
  Specified by:
  
  onException in interface PollHandler<V>
- toString
```
public java.lang.String toString()
```
  Overrides:
  
  toString in class java.lang.Object
- getDescription
```
public java.lang.String getDescription()
```
  Specified by:
  
  getDescription in interface PollHandler<V>

Apache Brooklyn - Multi-Cloud Application Management
brooklyn.io. Apache License. © 2016.

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