org.apache.camel.ha

Interface CamelClusterService

All Superinterfaces:

CamelContextAware, HasId, IdAware, Ordered, Service

All Known Implementing Classes:

AbstractCamelClusterService, FileLockClusterService

public interface CamelClusterService
extends Service, CamelContextAware, IdAware, Ordered

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	CamelClusterService.Selector

Field Summary

Fields inherited from interface org.apache.camel.Ordered

HIGHEST, LOWEST

Method Summary

Modifier and Type	Method and Description
default Map<String,Object>	getAttributes() Attributes associated to the service.
Collection<String>	getNamespaces() Return the namespaces handled by this service.
default int	getOrder() Gets the order.
CamelClusterView	getView(String namespace) Get a view of the cluster bound to a namespace creating it if needed.
boolean	isLeader(String namespace) Check if the service is the leader on the given namespace.
void	releaseView(CamelClusterView view) Release a view if it has no references.
void	startView(String namespace) Force start of the view associated to the give namespace.
void	stopView(String namespace) Force stop of the view associated to the give namespace.
default <T extends CamelClusterService> T	unwrap(Class<T> clazz) Access the underlying concrete CamelClusterService implementation to provide access to further features.

Methods inherited from interface org.apache.camel.Service

start, stop

Methods inherited from interface org.apache.camel.CamelContextAware

getCamelContext, setCamelContext

Methods inherited from interface org.apache.camel.spi.IdAware

setId

Methods inherited from interface org.apache.camel.spi.HasId

getId

Method Detail

getOrder

default int getOrder()

Description copied from interface: Ordered

Gets the order.

Use low numbers for higher priority. Normally the sorting will start from 0 and move upwards. So if you want to be last then use Integer.MAX_VALUE or eg Ordered.LOWEST.

Specified by:

getOrder in interface Ordered

Returns:

the order

getView

CamelClusterView getView(String namespace)
                  throws Exception

Get a view of the cluster bound to a namespace creating it if needed. Multiple calls to this method with the same namespace should return the same instance. The instance is automatically started the first time it is instantiated and if the cluster service is ready.

Parameters:

namespace - the namespace the view refer to.

Returns:

the view.

Throws:

Exception - if the view can't be created.

releaseView

void releaseView(CamelClusterView view)
          throws Exception

Release a view if it has no references.

Parameters:

view - the view.

Throws:

Exception

getNamespaces

Collection<String> getNamespaces()

Return the namespaces handled by this service.

startView

void startView(String namespace)
        throws Exception

Force start of the view associated to the give namespace.

Throws:

Exception

stopView

void stopView(String namespace)
       throws Exception

Force stop of the view associated to the give namespace.

Throws:

Exception

isLeader

boolean isLeader(String namespace)

Check if the service is the leader on the given namespace.

Parameters:

namespace - the namespace.

Returns:

getAttributes

default Map<String,Object> getAttributes()

Attributes associated to the service.

unwrap

default <T extends CamelClusterService> T unwrap(Class<T> clazz)

Access the underlying concrete CamelClusterService implementation to provide access to further features.

Parameters:

clazz - the proprietary class or interface of the underlying concrete CamelClusterService.

Returns:

an instance of the underlying concrete CamelClusterService as the required type.