RefreshAndDoubleCheckOnFailUnlessStatusInvalid (Apache jclouds 2.4.0 API)

java.lang.Object
- org.jclouds.compute.predicates.internal.RefreshAndDoubleCheckOnFailUnlessStatusInvalid<S,C>

All Implemented Interfaces:

com.google.common.base.Predicate<AtomicReference<C>>, Predicate<AtomicReference<C>>

Direct Known Subclasses:

RefreshImageAndDoubleCheckOnFailUnlessStatusInvalid, RefreshNodeAndDoubleCheckOnFailUnlessStatusInvalid
```
public abstract class RefreshAndDoubleCheckOnFailUnlessStatusInvalid<S extends Enum<S>,C extends ComputeMetadataIncludingStatus<S>>
extends Object
implements com.google.common.base.Predicate<AtomicReference<C>>
```
Keep an atomic reference to a resource, so as to eliminate a redundant ComputeService#getNodeMetadata call after the predicate passes.

Field Summary

Fields
Modifier and Type Field Description

protected Logger logger

Constructor Summary

Constructors
Constructor Description

RefreshAndDoubleCheckOnFailUnlessStatusInvalid(S intended, Set<S> invalids)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`apply(AtomicReference<C> atomicResource)`
`boolean`	`checkStatus(C resource)`
`protected abstract C`	`refreshOrNull(C resource)`

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

Methods inherited from interface com.google.common.base.Predicate
equals, test

Methods inherited from interface java.util.function.Predicate
and, negate, or

Field Detail
- logger
```
protected Logger logger
```

Constructor Detail

RefreshAndDoubleCheckOnFailUnlessStatusInvalid

public RefreshAndDoubleCheckOnFailUnlessStatusInvalid(S intended,
                                                      Set<S> invalids)

Method Detail

apply
```
public boolean apply(AtomicReference<C> atomicResource)
```
Specified by:

apply in interface com.google.common.base.Predicate<S extends Enum<S>>

checkStatus

public boolean checkStatus(C resource)

refreshOrNull

protected abstract C refreshOrNull(C resource)