Package org.graylog2.utilities

Class LoggingServiceListener

java.lang.Object

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

org.graylog2.utilities.LoggingServiceListener

public class LoggingServiceListener
extends com.google.common.util.concurrent.Service.Listener

This class is a convenience listener for Service instances so that service lifecycle changes can easily be logged without having to manually write listeners everywhere.
It allows adding an action that is run when the service transitions into Service.State.RUNNING as that is the most common case. If you need additional, or more complex listeners, add a new instance in addition to this simple class.

Constructor Summary

Constructors

Constructor	Description
LoggingServiceListener(String serviceName, String id)	Creates a new logging listener for the service name and an id.
LoggingServiceListener(String serviceName, String id, @NotNull org.slf4j.Logger logger)
LoggingServiceListener(String serviceName, String id, Runnable action, @NotNull org.slf4j.Logger logger)

Method Summary

Modifier and Type	Method	Description
void	failed(com.google.common.util.concurrent.Service.State from, Throwable failure)
void	running()
void	starting()
void	stopping(com.google.common.util.concurrent.Service.State from)
void	terminated(com.google.common.util.concurrent.Service.State from)

Methods inherited from class java.lang.Object

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

Constructor Details

LoggingServiceListener

public LoggingServiceListener(String serviceName,
 String id)

Creates a new logging listener for the service name and an id.

Parameters:

serviceName - the concise name describing the service being listened to (e.g. "Input" or "Cache")

id - the unique id of the service instance, useful if there are more than one running.

LoggingServiceListener

public LoggingServiceListener(String serviceName,
 String id,
 @NotNull
 @NotNull org.slf4j.Logger logger)

LoggingServiceListener

public LoggingServiceListener(String serviceName,
 String id,
 @Nullable
 Runnable action,
 @NotNull
 @NotNull org.slf4j.Logger logger)

Method Details

starting

public void starting()

Overrides:

starting in class com.google.common.util.concurrent.Service.Listener

running

public void running()

Overrides:

running in class com.google.common.util.concurrent.Service.Listener

stopping

public void stopping(com.google.common.util.concurrent.Service.State from)

Overrides:

stopping in class com.google.common.util.concurrent.Service.Listener

terminated

public void terminated(com.google.common.util.concurrent.Service.State from)

Overrides:

terminated in class com.google.common.util.concurrent.Service.Listener

failed

public void failed(com.google.common.util.concurrent.Service.State from,
 Throwable failure)

Overrides:

failed in class com.google.common.util.concurrent.Service.Listener