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Use virtual threads in BackgroundPreinitializer if enabled 

Closes gh-36695
This commit is contained in:
Moritz Halbritter 2023-08-03 11:00:59 +02:00
parent 25eb3c8c18
commit 4bbc336321
1 changed files with 17 additions and 8 deletions
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25
spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/BackgroundPreinitializer.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2012-2022 the original author or authors.
* Copyright 2012-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -23,6 +23,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
import jakarta.validation.Configuration;
import jakarta.validation.Validation;
import org.springframework.boot.autoconfigure.thread.Threading;
import org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent;
import org.springframework.boot.context.event.ApplicationFailedEvent;
import org.springframework.boot.context.event.ApplicationReadyEvent;
@ -31,6 +32,9 @@ import org.springframework.boot.context.logging.LoggingApplicationListener;
import org.springframework.context.ApplicationListener;
import org.springframework.core.NativeDetector;
import org.springframework.core.Ordered;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.Environment;
import org.springframework.core.task.SimpleAsyncTaskExecutor;
import org.springframework.format.support.DefaultFormattingConversionService;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter;
@ -47,6 +51,7 @@ import org.springframework.http.converter.support.AllEncompassingFormHttpMessage
* @author Andy Wilkinson
* @author Artsiom Yudovin
* @author Sebastien Deleuze
* @author Moritz Halbritter
* @since 1.3.0
*/
public class BackgroundPreinitializer implements ApplicationListener<SpringApplicationEvent>, Ordered {
@ -79,7 +84,8 @@ public class BackgroundPreinitializer implements ApplicationListener<SpringAppli
}
if (event instanceof ApplicationEnvironmentPreparedEvent
&& preinitializationStarted.compareAndSet(false, true)) {
performPreinitialization();
ConfigurableEnvironment environment = ((ApplicationEnvironmentPreparedEvent) event).getEnvironment();
performPreinitialization(environment);
}
if ((event instanceof ApplicationReadyEvent || event instanceof ApplicationFailedEvent)
&& preinitializationStarted.get()) {
@ -92,9 +98,9 @@ public class BackgroundPreinitializer implements ApplicationListener<SpringAppli
}
}
private void performPreinitialization() {
private void performPreinitialization(Environment environment) {
try {
Thread thread = new Thread(new Runnable() {
Runnable runnable = new Runnable() {
@Override
public void run() {
@ -102,8 +108,7 @@ public class BackgroundPreinitializer implements ApplicationListener<SpringAppli
runSafely(new ValidationInitializer());
if (!runSafely(new MessageConverterInitializer())) {
// If the MessageConverterInitializer fails to run, we still might
// be able to
// initialize Jackson
// be able to initialize Jackson
runSafely(new JacksonInitializer());
}
runSafely(new CharsetInitializer());
@ -120,8 +125,12 @@ public class BackgroundPreinitializer implements ApplicationListener<SpringAppli
}
}
}, "background-preinit");
thread.start();
};
SimpleAsyncTaskExecutor taskExecutor = new SimpleAsyncTaskExecutor("background-preinit-");
if (Threading.VIRTUAL.isActive(environment)) {
taskExecutor.setVirtualThreads(true);
}
taskExecutor.execute(runnable);
}
catch (Exception ex) {
// This will fail on GAE where creating threads is prohibited. We can safely