LeaseManager (eureka-core 2.0.0 API)

Type Parameters:

T -

All Known Subinterfaces:

InstanceRegistry, PeerAwareInstanceRegistry

All Known Implementing Classes:

AbstractInstanceRegistry, AwsInstanceRegistry, PeerAwareInstanceRegistryImpl
```
public interface LeaseManager<T>
```
This class is responsible for creating/renewing and evicting a lease for a particular instance.
Leases determine what instances receive traffic. When there is no renewal request from the client, the lease gets expired and the instances are evicted out of AbstractInstanceRegistry. This is key to instances receiving traffic or not.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`cancel(java.lang.String appName, java.lang.String id, boolean isReplication)`	Cancel the `Lease` associated w/ the passed in `appName` and `id`.
`void`	`evict()`	Evict `LeaseManager`s with expired `Lease`(s).
`void`	`register(T r, int leaseDuration, boolean isReplication)`	Assign a new `Lease` to the passed in `LeaseManager`.
`boolean`	`renew(java.lang.String appName, java.lang.String id, boolean isReplication)`	Renew the `Lease` associated w/ the passed in `appName` and `id`.

- Method Detail
  - register
```
void register(T r,
              int leaseDuration,
              boolean isReplication)
```
    Assign a new Lease to the passed in LeaseManager.
    
    Parameters:
    
    r - - T to register
    
    leaseDuration -
    
    isReplication - - whether this is a replicated entry from another eureka node.
  - cancel
```
boolean cancel(java.lang.String appName,
               java.lang.String id,
               boolean isReplication)
```
    Cancel the Lease associated w/ the passed in appName and id.
    
    Parameters:
    
    appName - - unique id of the application.
    
    id - - unique id within appName.
    
    isReplication - - whether this is a replicated entry from another eureka node.
    
    Returns:
    
    true, if the operation was successful, false otherwise.
  - renew
```
boolean renew(java.lang.String appName,
              java.lang.String id,
              boolean isReplication)
```
    Renew the Lease associated w/ the passed in appName and id.
    
    Parameters:
    
    id - - unique id within appName
    
    isReplication - - whether this is a replicated entry from another ds node
    
    Returns:
    
    whether the operation of successful
  - evict
```
void evict()
```
    Evict LeaseManagers with expired Lease(s).