Package org.apache.kafka.streams.processor.internals

Class GlobalStreamThread

java.lang.Object

java.lang.Thread

org.apache.kafka.streams.processor.internals.GlobalStreamThread

All Implemented Interfaces:

Runnable

public class GlobalStreamThread
extends Thread

This is the thread responsible for keeping all Global State Stores updated. It delegates most of the responsibility to the internal class StateConsumer

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GlobalStreamThread.State	The states that the global stream thread can be in

Nested classes/interfaces inherited from class java.lang.Thread

Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
GlobalStreamThread(ProcessorTopology topology, StreamsConfig config, Consumer<byte[],byte[]> globalConsumer, StateDirectory stateDirectory, long cacheSizeBytes, StreamsMetricsImpl streamsMetrics, org.apache.kafka.common.utils.Time time, String threadClientId, StateRestoreListener stateRestoreListener)

Method Summary

Modifier and Type	Method	Description
Map<MetricName,Metric>	consumerMetrics()
void	run()
void	setStateListener(StreamThread.StateListener listener)	Set the StreamThread.StateListener to be notified when state changes.
void	shutdown()
void	start()
GlobalStreamThread.State	state()
boolean	stillRunning()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

GlobalStreamThread

public GlobalStreamThread(ProcessorTopology topology,
                          StreamsConfig config,
                          Consumer<byte[],byte[]> globalConsumer,
                          StateDirectory stateDirectory,
                          long cacheSizeBytes,
                          StreamsMetricsImpl streamsMetrics,
                          org.apache.kafka.common.utils.Time time,
                          String threadClientId,
                          StateRestoreListener stateRestoreListener)

Method Detail

setStateListener

public void setStateListener(StreamThread.StateListener listener)

Set the StreamThread.StateListener to be notified when state changes. Note this API is internal to Kafka Streams and is not intended to be used by an external application.

state

public GlobalStreamThread.State state()

Returns:

The state this instance is in

stillRunning

public boolean stillRunning()

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

start

public void start()

Overrides:

start in class Thread

shutdown

public void shutdown()

consumerMetrics

public Map<MetricName,Metric> consumerMetrics()