Package org.opennms.core.ipc.sink.common

Class AbstractMessageDispatcherFactory<W>

java.lang.Object

org.opennms.core.ipc.sink.common.AbstractMessageDispatcherFactory<W>

Type Parameters:

W - type of module specific state or meta-data, use Void if none is used

All Implemented Interfaces:

MessageDispatcherFactory

Direct Known Subclasses:

CamelLocalMessageDispatcherFactory, CamelRemoteMessageDispatcherFactory, GrpcLocalDispatcherFactory, KafkaLocalMessageDispatcherFactory, KafkaRemoteMessageDispatcherFactory, MinionGrpcClient, MockMessageDispatcherFactory, OsgiLocalDispatcherFactory

public abstract class AbstractMessageDispatcherFactory<W>
extends Object
implements MessageDispatcherFactory

This class does all the hard work of building and maintaining the state of the message dispatchers so that concrete implementations only need to focus on dispatching the messages. Different types of dispatchers are created based on whether or not the module is using aggregation. Asynchronous dispatchers use a queue and a thread pool to delegate to a suitable synchronous dispatcher.

Author:

jwhite

Constructor Summary

Constructors

Constructor	Description
AbstractMessageDispatcherFactory()

Method Summary

Modifier and Type	Method	Description
<S extends Message,T extends Message> AsyncDispatcher<S>	createAsyncDispatcher(SinkModule<S,T> module)	Creates a new dispatcher used to send messages asynchronously.
<S extends Message,T extends Message> SyncDispatcher<S>	createSyncDispatcher(SinkModule<S,T> module)	Creates a new synchronous dispatcher that will lock the calling thread when dispatching messages.
protected <S extends Message,T extends Message> SyncDispatcher<S>	createSyncDispatcher(DispatcherState<W,S,T> state)
abstract <S extends Message,T extends Message> void	dispatch(SinkModule<S,T> module, W metadata, T message)
abstract org.osgi.framework.BundleContext	getBundleContext()
abstract String	getMetricDomain()
abstract com.codahale.metrics.MetricRegistry	getMetrics()
<S extends Message,T extends Message> W	getModuleMetadata(SinkModule<S,T> module)	Optionally build meta-data or state information for the module which will be passed on all the calls to dispatch(org.opennms.core.ipc.sink.api.SinkModule<S, T>, W, T).
abstract io.opentracing.Tracer	getTracer()
void	onDestroy()
void	onInit()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMessageDispatcherFactory

public AbstractMessageDispatcherFactory()

Method Detail

dispatch

public abstract <S extends Message,T extends Message> void dispatch(SinkModule<S,T> module,
                                                                          W metadata,
                                                                          T message)

getMetricDomain

public abstract String getMetricDomain()

getBundleContext

public abstract org.osgi.framework.BundleContext getBundleContext()

getTracer

public abstract io.opentracing.Tracer getTracer()

getMetrics

public abstract com.codahale.metrics.MetricRegistry getMetrics()

getModuleMetadata

public <S extends Message,T extends Message> W getModuleMetadata(SinkModule<S,T> module)

Optionally build meta-data or state information for the module which will be passed on all the calls to dispatch(org.opennms.core.ipc.sink.api.SinkModule<S, T>, W, T). This is useful for calculating things like message headers which are re-used on every dispatch.

Parameters:

module -

Returns:

createSyncDispatcher

public <S extends Message,T extends Message> SyncDispatcher<S> createSyncDispatcher(SinkModule<S,T> module)

Description copied from interface: MessageDispatcherFactory

Creates a new synchronous dispatcher that will lock the calling thread when dispatching messages.

Specified by:

createSyncDispatcher in interface MessageDispatcherFactory

createAsyncDispatcher

public <S extends Message,T extends Message> AsyncDispatcher<S> createAsyncDispatcher(SinkModule<S,T> module)

Description copied from interface: MessageDispatcherFactory

Creates a new dispatcher used to send messages asynchronously. The behavior of the asynchronous dispatcher is defined by the module's AsyncPolicy.

Specified by:

createAsyncDispatcher in interface MessageDispatcherFactory

createSyncDispatcher

protected <S extends Message,T extends Message> SyncDispatcher<S> createSyncDispatcher(DispatcherState<W,S,T> state)

onInit

public void onInit()

onDestroy

public void onDestroy()