ReplicationController (polaris-application 0.0.79 API)

All Known Implementing Classes:

NullReplicationController, StaticReplicationController
```
public interface ReplicationController
```
This interface is used to control how a Task should replicate its Instances.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static ReplicationController`	`create(uk.co.ractf.polaris.api.deployment.Replication replication)`
`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.

Method Detail

create

@Contract("null -> new")
static ReplicationController create(uk.co.ractf.polaris.api.deployment.Replication replication)

getScaleAmount
```
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.

Parameters:

instances - the current instance list

clusterState - the cluster state

Returns:

the amount to scale by