com.spotify.helios.servicescommon

Class DefaultReactor

java.lang.Object

com.google.common.util.concurrent.AbstractExecutionThreadService

com.spotify.helios.servicescommon.InterruptingExecutionThreadService

com.spotify.helios.servicescommon.DefaultReactor

All Implemented Interfaces:

com.google.common.util.concurrent.Service, Reactor

public class DefaultReactor
extends InterruptingExecutionThreadService
implements Reactor

A reactor loop that collapses event updates and calls a provided callback.

Nested Class Summary

Nested classes/interfaces inherited from interface com.spotify.helios.servicescommon.Reactor

Reactor.Callback

Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

Constructor Summary

Constructors

Constructor and Description
DefaultReactor(String name, Reactor.Callback callback) Create a reactor that calls the provided callback.
DefaultReactor(String name, Reactor.Callback callback, long timeoutMillis) Create a reactor that calls the provided callback with the specified timeout interval.

Method Summary

Modifier and Type	Method and Description
protected void	run()
void	signal() Send a signal to trigger the reactor.
Runnable	signalRunnable() Returns a runnable that calls Reactor.signal().

Methods inherited from class com.spotify.helios.servicescommon.InterruptingExecutionThreadService

executor, serviceName, triggerShutdown

Methods inherited from class com.google.common.util.concurrent.AbstractExecutionThreadService

addListener, awaitRunning, awaitRunning, awaitTerminated, awaitTerminated, failureCause, isRunning, shutDown, startAsync, startUp, state, stopAsync, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.util.concurrent.Service

addListener, awaitRunning, awaitRunning, awaitTerminated, awaitTerminated, failureCause, isRunning, startAsync, state, stopAsync

Constructor Detail

DefaultReactor

public DefaultReactor(String name,
                      Reactor.Callback callback,
                      long timeoutMillis)

Create a reactor that calls the provided callback with the specified timeout interval.

Parameters:

name - The reactor name.

callback - The callback to call.

timeoutMillis - The timeout in millis after which the callback should be called even if there has been no updates.

DefaultReactor

public DefaultReactor(String name,
                      Reactor.Callback callback)

Create a reactor that calls the provided callback.

Parameters:

name - The reactor name.

callback - The callback to call.

Method Detail

signal

public void signal()

Description copied from interface: Reactor

Send a signal to trigger the reactor. Does not block.

Specified by:

signal in interface Reactor

signalRunnable

public Runnable signalRunnable()

Description copied from interface: Reactor

Returns a runnable that calls Reactor.signal().

Specified by:

signalRunnable in interface Reactor

Returns:

The runnable object.

run

protected void run()
            throws Exception

Specified by:

run in class com.google.common.util.concurrent.AbstractExecutionThreadService

Throws:

Exception