org.springframework.boot.autoconfigure

Class BackgroundPreinitializer

java.lang.Object

org.springframework.boot.autoconfigure.BackgroundPreinitializer

All Implemented Interfaces:

EventListener, ApplicationListener<SpringApplicationEvent>

@Order(value=-2147483627)
public class BackgroundPreinitializer
extends Object
implements ApplicationListener<SpringApplicationEvent>

ApplicationListener to trigger early initialization in a background thread of time consuming tasks.

Set the IGNORE_BACKGROUNDPREINITIALIZER_PROPERTY_NAME system property to true to disable this mechanism and let such initialization happen in the foreground.

Since:

1.3.0

Author:

Phillip Webb, Andy Wilkinson, Artsiom Yudovin, Sebastien Deleuze

Field Summary

Fields

Modifier and Type	Field and Description
static String	IGNORE_BACKGROUNDPREINITIALIZER_PROPERTY_NAME System property that instructs Spring Boot how to run pre initialization.

Constructor Summary

Constructors

Constructor and Description
BackgroundPreinitializer()

Method Summary

Modifier and Type	Method and Description
void	onApplicationEvent(SpringApplicationEvent event)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.context.ApplicationListener

forPayload

Field Detail

IGNORE_BACKGROUNDPREINITIALIZER_PROPERTY_NAME

public static final String IGNORE_BACKGROUNDPREINITIALIZER_PROPERTY_NAME

System property that instructs Spring Boot how to run pre initialization. When the property is set to true, no pre-initialization happens and each item is initialized in the foreground as it needs to. When the property is false (default), pre initialization runs in a separate thread in the background.

Since:

2.1.0

See Also:

Constant Field Values

Constructor Detail

BackgroundPreinitializer

public BackgroundPreinitializer()

Method Detail

onApplicationEvent

public void onApplicationEvent(SpringApplicationEvent event)

Specified by:

onApplicationEvent in interface ApplicationListener<SpringApplicationEvent>