org.nustaq.kontraktor.services

Class ServiceRegistry

java.lang.Object

org.nustaq.kontraktor.Actors

org.nustaq.kontraktor.Actor<ServiceRegistry>

org.nustaq.kontraktor.services.ServiceRegistry

All Implemented Interfaces:

Serializable, Executor, org.nustaq.kontraktor.monitoring.Monitorable

public class ServiceRegistry
extends org.nustaq.kontraktor.Actor<ServiceRegistry>

Created by ruedi on 11.08.2015. a simple service registry. Services can be registered by name. They are expected to send cyclical heartbeats. By registering a listener (callback) remote services can listen to availability/unavailability of services Rationale: in cluster of services managing connectivity gets complex quickly. In order to simplify this, services are given a single point of contact: the service registry (serviceRegistry). They register themself and obtain address and availability from the central registry. Note: Downside is, this is a SPOF.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ServiceRegistry.RestApi
static class	ServiceRegistry.StatusEntry

Nested classes/interfaces inherited from class org.nustaq.kontraktor.Actor

org.nustaq.kontraktor.Actor.ActorReport

Field Summary

Fields

Modifier and Type	Field and Description
static String	AVAILABLE
static String	CONFIGUPDATE
static RegistryArgs	options
static String	SERVICEDUMP
static String	TIMEOUT

Fields inherited from class org.nustaq.kontraktor.Actor

__cbQueue, __clientConnection, __connections, __currentDispatcher, __mailbox, __mailboxCapacity, __mbCapacity, __publishTarget, __remoteId, __scheduler, __self, __stopped, __ticketMachine, connection, sender, userData, zzRoutingGCEnabled, zzServerMsgCallback

Fields inherited from class org.nustaq.kontraktor.Actors

CONT, DEFAULT_TIMOUT, defaultScheduler, delayedCalls, exec, instance, MAX_EXTERNAL_THREADS_POOL_SIZE, version

Constructor Summary

Constructors

Constructor and Description
ServiceRegistry()

Method Summary

Modifier and Type	Method and Description
protected void	broadcastAvailable(ServiceDescription desc)
protected void	broadCastTimeOut(ServiceDescription desc)
void	checkTimeout()
org.nustaq.kontraktor.IPromise<ClusterCfg>	getConfig()
protected List<ServiceDescription>	getServiceList(String serviceName)
org.nustaq.kontraktor.IPromise<Map<String,ServiceDescription>>	getServiceMap()
org.nustaq.kontraktor.IPromise<List<ServiceRegistry.StatusEntry>>	getStati()
void	init()
static void	main(String[] args)
static ServiceArgs	parseCommandLine(String[] args, ServiceArgs options)
void	receiveHeartbeat(String serviceName, String uniqueKey)
void	receiveHeartbeatWithStatus(String serviceName, String uniqueKey, Serializable status)
void	registerService(ServiceDescription desc)
protected void	removeStatus(String key)
void	serviceDumper()
static ServiceRegistry	start(String[] args)
void	subscribe(org.nustaq.kontraktor.Callback<org.nustaq.kontraktor.util.Pair<String,ServiceDescription>> cb)
protected void	updateStatus(long now, ServiceDescription td, String key, Serializable status)

Methods inherited from class org.nustaq.kontraktor.Actor

__addDeadLetter, __addRemoteConnection, __addStopHandler, __dispatchRemoteCall, __enqueueCall, __getCachedMethod, __removeRemoteConnection, __stop, __stopImpl, __submit, ask, askMsg, asyncstop, checkThread, close, closeCurrentClient, current, cyclic, delayed, execInThreadPool, execute, getActor, getActorRef, getCallbackSize, getConnections, getCurrentDispatcher, getFactory, getMailboxSize, getQSizes, getReport, getScheduler, getSubMonitorables, getUntypedRef, hasStopped, inside, inThread, isCallbackQPressured, isEmpty, isMailboxPressured, isProxy, isPublished, isRemote, isStopped, ping, router$clientPing, self, serialOn, setServerMsgCallback, stop, stopSafeClose, tell, tellMsg, unpublish, zzkrouterLostClient, zzRoutingRefGC

Methods inherited from class org.nustaq.kontraktor.Actors

AddDeadLetter, all, all, all, allMapped, AsActor, AsActor, AsActor, AsActor, AsUntypedActor, awaitAll, awaitAll, awaitAll, awaitAll, complete, complete, DeadLetters, flow, InThread, isComplete, isCont, isError, isErrorOrComplete, isResult, isTimeout, promise, race, race, reject, resolve, resolve, stream, SubmitDelayed, yield, yield, yieldCallbacks

Methods inherited from class java.lang.Object

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

Field Detail

CONFIGUPDATE

public static final String CONFIGUPDATE

See Also:

Constant Field Values

SERVICEDUMP

public static final String SERVICEDUMP

See Also:

Constant Field Values

AVAILABLE

public static final String AVAILABLE

See Also:

Constant Field Values

TIMEOUT

public static final String TIMEOUT

See Also:

Constant Field Values

options

public static RegistryArgs options

Constructor Detail

ServiceRegistry

public ServiceRegistry()

Method Detail

init

public void init()

serviceDumper

public void serviceDumper()

registerService

public void registerService(ServiceDescription desc)

getServiceMap

public org.nustaq.kontraktor.IPromise<Map<String,ServiceDescription>> getServiceMap()

subscribe

public void subscribe(org.nustaq.kontraktor.Callback<org.nustaq.kontraktor.util.Pair<String,ServiceDescription>> cb)

broadcastAvailable

protected void broadcastAvailable(ServiceDescription desc)

broadCastTimeOut

protected void broadCastTimeOut(ServiceDescription desc)

getConfig

public org.nustaq.kontraktor.IPromise<ClusterCfg> getConfig()

receiveHeartbeat

public void receiveHeartbeat(String serviceName,
                             String uniqueKey)

receiveHeartbeatWithStatus

public void receiveHeartbeatWithStatus(String serviceName,
                                       String uniqueKey,
                                       Serializable status)

removeStatus

protected void removeStatus(String key)

updateStatus

protected void updateStatus(long now,
                            ServiceDescription td,
                            String key,
                            Serializable status)

checkTimeout

public void checkTimeout()

getServiceList

protected List<ServiceDescription> getServiceList(String serviceName)

parseCommandLine

public static ServiceArgs parseCommandLine(String[] args,
                                           ServiceArgs options)

getStati

public org.nustaq.kontraktor.IPromise<List<ServiceRegistry.StatusEntry>> getStati()

main

public static void main(String[] args)

start

public static ServiceRegistry start(String[] args)