NullReplicationController (polaris-application 0.0.79 API)

java.lang.Object
- uk.co.ractf.polaris.controller.replication.NullReplicationController

All Implemented Interfaces:

ReplicationController
```
public class NullReplicationController
extends java.lang.Object
implements ReplicationController
```
An implementation of ReplicationController that will ensure there is always 0 of Instances

Constructor Summary

Constructors
Constructor Description

NullReplicationController()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getScaleAmount(java.util.List<uk.co.ractf.polaris.api.instance.Instance> instances, ClusterState clusterState)`	Calculate how many instances need scheduling or descheduling based on the current state of the cluster.

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

- Constructor Detail
  - NullReplicationController
```
public NullReplicationController()
```
- Method Detail
  - getScaleAmount
```
public int getScaleAmount(java.util.List<uk.co.ractf.polaris.api.instance.Instance> instances,
                          ClusterState clusterState)
```
    Description copied from interface: ReplicationController
    
    Calculate how many instances need scheduling or descheduling based on the current state of the cluster.
    
    Specified by:
    
    getScaleAmount in interface ReplicationController
    
    Parameters:
    
    instances - the current instance list
    
    clusterState - the cluster state
    
    Returns:
    
    the amount to scale by