Package org.apache.sling.discovery.base.commons

Provides some common classes for discovery implementors that choose to extend from discovery.base

See: Description

Interface Summary

Interface	Description
ClusterViewService	The ClusterViewService is capable of determining the ClusterView of the local cluster (ie of the instances that are all hooked to the same underlying repository).
ViewChecker	A ViewChecker is capable of issuing a heartbeat and subsequently checking the resulting, current view in the local cluster.

Class Summary

Class	Description
BaseDiscoveryService	Abstract base class for DiscoveryService implementations which uses the ClusterViewService plus Topology Connectors to calculate the current TopologyView
BaseViewChecker	The heartbeat handler is responsible and capable of issuing both local and remote heartbeats and registers a periodic job with the scheduler for doing so.
ClusterViewHelper	Contains some static helper methods around ClusterView
DefaultTopologyView	Default Implementation of the topology view interface
PeriodicBackgroundJob	Simple executor of a background job that periodically invokes a particular runnable - catching RuntimeExceptions that might throw - but not catching Errors (that terminates the BackgroundJob).

Enum Summary

Enum	Description
UndefinedClusterViewException.Reason

Exception Summary

Exception	Description
UndefinedClusterViewException	This exception is thrown when the ClusterViewService does not have a cluster view that is valid.

Package org.apache.sling.discovery.base.commons Description

Provides some common classes for discovery implementors that choose to extend from discovery.base