Package 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

Direct Known Subclasses:

DynDataServiceRegistry

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	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	Description
static final String	AVAILABLE
protected ClusterCfg	config
static final String	CONFIGUPDATE
protected List<org.nustaq.kontraktor.Callback>	listeners
static RegistryArgs	options
static final String	SERVICEDUMP
protected HashMap<String,List<org.nustaq.kontraktor.remoting.base.ServiceDescription>>	services
protected Map<String,ServiceRegistry.StatusEntry>	statusMap
static final 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	Description
ServiceRegistry()

Method Summary

Modifier and Type	Method	Description
org.nustaq.kontraktor.IPromise	balanceDynShards()	only valid on DynData cluster, rebalance data load
protected void	broadcastAvailable(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)
protected void	broadCastTimeOut(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)
void	checkTimeout()
org.nustaq.kontraktor.IPromise<org.nustaq.reallive.server.dynamic.DynClusterDistribution>	getActiveDynDataDistribution()	only valid on DynData cluster, get distribution as assumed by registry
org.nustaq.kontraktor.IPromise<ClusterCfg>	getConfig()
org.nustaq.kontraktor.IPromise<org.nustaq.reallive.server.dynamic.DynClusterDistribution>	getDynDataDistribution()	only valid on DynData cluster, get distribution as reported by datanodes
Consumer<io.undertow.server.HttpServerExchange>	getPrepareResponse()
Function<io.undertow.util.HeaderMap,org.nustaq.kontraktor.IPromise>	getReqAuth()
protected org.nustaq.kontraktor.remoting.base.ServiceDescription	getService(String name)
protected List<org.nustaq.kontraktor.remoting.base.ServiceDescription>	getServiceList(String serviceName)
org.nustaq.kontraktor.IPromise<Map<String,org.nustaq.kontraktor.remoting.base.ServiceDescription>>	getServiceMap()
org.nustaq.kontraktor.IPromise<List<ServiceRegistry.StatusEntry>>	getStati()
void	init(ClusterCfg cfg)
org.nustaq.kontraktor.IPromise<Boolean>	isDynamic()
static void	main(String[] args)
static ServiceArgs	parseCommandLine(String[] args, String[] concatArgs, ServiceArgs options)
static ServiceArgs	parseCommandLine(String[] args, ServiceArgs options)
void	receiveHeartbeat(String serviceName, String uniqueKey)
void	receiveHeartbeatWithStatus(String serviceName, String uniqueKey, Serializable status)
void	registerService(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)
org.nustaq.kontraktor.IPromise	releaseDynShard(String name)	drop node, remove all data !!
protected void	removeStatus(String key)
void	sendServiceBroadcast(String messageId, Serializable message)
void	serviceDumper()
static ServiceRegistry	start(String[] args)
static ServiceRegistry	start(RegistryArgs options)
static ServiceRegistry	start(RegistryArgs _options, ClusterCfg cfg, Class<? extends ServiceRegistry> clazz)
static void	start(SingleProcessRLClusterArgs options, ClusterCfg cfg)
void	subscribe(org.nustaq.kontraktor.Callback<org.nustaq.kontraktor.util.Pair<String,org.nustaq.kontraktor.remoting.base.ServiceDescription>> cb)
protected void	updateStatus(long now, org.nustaq.kontraktor.remoting.base.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, debounce, 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, kYield, kYield, promise, race, race, reject, resolve, resolve, stream, SubmitDelayed, yieldCallbacks

Methods inherited from class java.lang.Object

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

Field Details

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

services

protected HashMap<String,List<org.nustaq.kontraktor.remoting.base.ServiceDescription>> services

statusMap

protected Map<String,ServiceRegistry.StatusEntry> statusMap

listeners

protected List<org.nustaq.kontraktor.Callback> listeners

config

protected ClusterCfg config

options

public static RegistryArgs options

Constructor Details

ServiceRegistry

public ServiceRegistry()

Method Details

init

public void init(ClusterCfg cfg)

serviceDumper

public void serviceDumper()

registerService

public void registerService(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)

getServiceMap

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

getService

protected org.nustaq.kontraktor.remoting.base.ServiceDescription getService(String name)

subscribe

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

broadcastAvailable

protected void broadcastAvailable(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)

broadCastTimeOut

protected void broadCastTimeOut(org.nustaq.kontraktor.remoting.base.ServiceDescription desc)

sendServiceBroadcast

public void sendServiceBroadcast(String messageId,
 Serializable message)

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,
 org.nustaq.kontraktor.remoting.base.ServiceDescription td,
 String key,
 Serializable status)

checkTimeout

public void checkTimeout()

getServiceList

protected List<org.nustaq.kontraktor.remoting.base.ServiceDescription> getServiceList(String serviceName)

parseCommandLine

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

parseCommandLine

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

getDynDataDistribution

public org.nustaq.kontraktor.IPromise<org.nustaq.reallive.server.dynamic.DynClusterDistribution> getDynDataDistribution()

only valid on DynData cluster, get distribution as reported by datanodes

Returns:

getActiveDynDataDistribution

public org.nustaq.kontraktor.IPromise<org.nustaq.reallive.server.dynamic.DynClusterDistribution> getActiveDynDataDistribution()

only valid on DynData cluster, get distribution as assumed by registry

Returns:

balanceDynShards

public org.nustaq.kontraktor.IPromise balanceDynShards()

only valid on DynData cluster, rebalance data load

Returns:

releaseDynShard

public org.nustaq.kontraktor.IPromise releaseDynShard(String name)

drop node, remove all data !!not yet implemented!!

Parameters:

name -

Returns:

getStati

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

main

public static void main(String[] args)

start

public static ServiceRegistry start(String[] args)

start

public static ServiceRegistry start(RegistryArgs options)

start

public static void start(SingleProcessRLClusterArgs options,
 ClusterCfg cfg)

start

public static ServiceRegistry start(RegistryArgs _options,
 ClusterCfg cfg,
 Class<? extends ServiceRegistry> clazz)

isDynamic

public org.nustaq.kontraktor.IPromise<Boolean> isDynamic()

getPrepareResponse

public Consumer<io.undertow.server.HttpServerExchange> getPrepareResponse()

getReqAuth

public Function<io.undertow.util.HeaderMap,org.nustaq.kontraktor.IPromise> getReqAuth()