Package org.wildfly.discovery

Class Discovery

java.lang.Object

org.wildfly.discovery.Discovery

All Implemented Interfaces:

org.wildfly.common.context.Contextual<Discovery>

public final class Discovery
extends Object
implements org.wildfly.common.context.Contextual<Discovery>

The service discovery API. Each discovery instance is associated with discovery providers which are able to provide answers to discovery queries.

Author:

David M. Lloyd

Method Summary

Modifier and Type	Method	Description
static Discovery	create(DiscoveryProvider provider)	Create a discovery object with the given single provider.
static Discovery	create(DiscoveryProvider... providers)	Create a discovery object with the given providers.
ServicesQueue	discover(ServiceDescription description)	Perform a service discovery.
ServicesQueue	discover(ServiceType serviceType, FilterSpec filterSpec)	Perform a service discovery.
ServicesQueue	discover(ServiceType serviceType, FilterSpec filterSpec, long timeout, TimeUnit timeUnit)	Perform a service discovery.
static org.wildfly.common.context.ContextManager<Discovery>	getContextManager()	Get the context manager.
org.wildfly.common.context.ContextManager<Discovery>	getInstanceContextManager()	Get the instance context manager.
void	processMissingTarget(URI location, Exception cause)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.wildfly.common.context.Contextual

run, runAction, runBiConsumer, runBiFunction, runBiPredicate, runCallable, runConsumer, runExBiConsumer, runExBiFunction, runExBiPredicate, runExceptionAction, runExConsumer, runExFunction, runExIntFunction, runExLongFunction, runExPredicate, runFunction, runIntFunction, runLongFunction, runPredicate

Method Details

getInstanceContextManager

public org.wildfly.common.context.ContextManager<Discovery> getInstanceContextManager()

Get the instance context manager. Delegates to getContextManager().

Specified by:

getInstanceContextManager in interface org.wildfly.common.context.Contextual<Discovery>

Returns:

the instance context manager (not null)

getContextManager

public static org.wildfly.common.context.ContextManager<Discovery> getContextManager()

Get the context manager.

Returns:

the context manager (not null)

discover

public ServicesQueue discover(ServiceType serviceType,
 FilterSpec filterSpec)

Perform a service discovery. The returned services queue is populated as discovery answers become available. Answers may be cached within each provider. The order of answers is not significant and can vary from call to call, especially with asynchronous discovery mechanisms. The returned service queue may be closed to indicate no further interest in query answers, and for this purpose it implements AutoCloseable in order to facilitate simple usage in a try-with-resources block.

Parameters:

serviceType - the abstract or concrete type of service to search for

filterSpec - the service filter specification

Returns:

the services queue

discover

public ServicesQueue discover(ServiceType serviceType,
 FilterSpec filterSpec,
 long timeout,
 TimeUnit timeUnit)

Perform a service discovery. The returned services queue is populated as discovery answers become available. Answers may be cached within each provider. The order of answers is not significant and can vary from call to call, especially with asynchronous discovery mechanisms. The returned service queue may be closed to indicate no further interest in query answers, and for this purpose it implements AutoCloseable in order to facilitate simple usage in a try-with-resources block. This method allows a timeout to be specified.

Parameters:

serviceType - the abstract or concrete type of service to search for

filterSpec - the service filter specification

timeout - the timeout duration

timeUnit - the unit of time for the timeout

Returns:

the services queue

discover

public ServicesQueue discover(ServiceDescription description)

Perform a service discovery. The returned services queue is populated as discovery answers become available. Answers may be cached within each provider. The order of answers is not significant and can vary from call to call, especially with asynchronous discovery mechanisms. The returned service queue may be closed to indicate no further interest in query answers, and for this purpose it implements AutoCloseable in order to facilitate simple usage in a try-with-resources block.

Parameters:

description - the service description (must not be null)

Returns:

the services queue

processMissingTarget

public void processMissingTarget(URI location,
 Exception cause)

create

public static Discovery create(DiscoveryProvider... providers)

Create a discovery object with the given providers. The given providers argument and its array elements may not be null.

Parameters:

providers - the discovery providers (must not be null)

Returns:

the discovery object

create

public static Discovery create(DiscoveryProvider provider)

Create a discovery object with the given single provider. The given provider argument may not be null.

Parameters:

provider - the discovery provider (must not be null)

Returns:

the discovery object