StickyStrategy (Curator Service Discovery 4.2.0 API)

java.lang.Object
- org.apache.curator.x.discovery.strategies.StickyStrategy<T>

All Implemented Interfaces:

ProviderStrategy<T>
```
public class StickyStrategy<T>
extends java.lang.Object
implements ProviderStrategy<T>
```
This strategy uses a master strategy to pick the initial instance. Once picked, that instance is always returned. If, however, the currently selected instance is no longer in the list, the master strategy is used to pick a new instance.

Constructor Summary

Constructors
Constructor Description

StickyStrategy(ProviderStrategy<T> masterStrategy)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ServiceInstance<T>`	`getInstance(InstanceProvider<T> instanceProvider)`	Given a source of instances, return one of them for a single use.
`int`	`getInstanceNumber()`	Each time a new instance is picked, an internal counter is incremented.

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

- Constructor Detail
  - StickyStrategy
```
public StickyStrategy(ProviderStrategy<T> masterStrategy)
```
    Parameters:
    
    masterStrategy - the strategy to use for picking the sticky instance
- Method Detail
  - getInstance
```
public ServiceInstance<T> getInstance(InstanceProvider<T> instanceProvider)
                               throws java.lang.Exception
```
    Description copied from interface: ProviderStrategy
    
    Given a source of instances, return one of them for a single use.
    
    Specified by:
    
    getInstance in interface ProviderStrategy<T>
    
    Parameters:
    
    instanceProvider - the instance provider
    
    Returns:
    
    the instance to use
    
    Throws:
    
    java.lang.Exception - any errors
  - getInstanceNumber
```
public int getInstanceNumber()
```
    Each time a new instance is picked, an internal counter is incremented. This way you can track when/if the instance changes. The instance can change when the selected instance is not in the current list of instances returned by the instance provider
    
    Returns:
    
    instance number