got exception during startup process

[evgenyz1]

I use a simple spring boot app which expose rest endpoint. If I use the following configuration in application.yml
flightrecorder:
enabled: true # is this starter active?

I've got the following exception. Please see log below.

And everything is fine if I use the following configuration

flightrecorder:
enabled: true # is this starter active?
recordingCleanupInterval: 5000 # try to cleanup old recordings every 5 seconds
triggerCheckInterval: 10000 # evaluate trigger expressions every 10 seconds
trigger:
- expression: meter('jvm.memory.used').tag('area','nonheap').tag('id','Metaspace').measurement('value') > 100
startRecordingCommand:
duration: 60
timeUnit: SECONDS

C:\Users\evgen\jfr_test\jfrdemo1>docker run --name jfrtestimage_c -p 8080:8080 --rm -i -t jfrtestimage1 bash

. ____ _ __ _ _
/\ / ' __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ' / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
' || .__|| ||| |_, | / / / /
=========||==============|/=////
:: Spring Boot :: (v2.4.0)

2020-12-09 09:28:45.547 INFO 1 --- [ main] com.example.jfrdemo.JfrdemoApplication : Starting JfrdemoApplication v0.0.1-SNAPSHOT using Java 11.0.7 on d7e2cec6ca38 with PID 1 (/app.jar started by root in /)
2020-12-09 09:28:45.554 INFO 1 --- [ main] com.example.jfrdemo.JfrdemoApplication : No active profile set, falling back to default profiles: default
2020-12-09 09:28:47.351 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-12-09 09:28:47.365 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-12-09 09:28:47.366 INFO 1 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.39]
2020-12-09 09:28:47.439 INFO 1 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-12-09 09:28:47.440 INFO 1 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1746 ms
2020-12-09 09:28:47.990 INFO 1 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-12-09 09:28:48.259 WARN 1 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'triggerChecker' defined in class path resource [de/mirkosertic/flightrecorderstarter/FlightRecorderConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [de.mirkosertic.flightrecorderstarter.TriggerChecker]: Factory method 'triggerChecker' threw exception; nested exception is java.lang.NullPointerException
2020-12-09 09:28:48.260 INFO 1 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
2020-12-09 09:28:48.264 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2020-12-09 09:28:48.292 INFO 1 --- [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-12-09 09:28:48.313 ERROR 1 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'triggerChecker' defined in class path resource [de/mirkosertic/flightrecorderstarter/FlightRecorderConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [de.mirkosertic.flightrecorderstarter.TriggerChecker]: Factory method 'triggerChecker' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:656) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:636) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925) ~[spring-context-5.3.1.jar!/:5.3.1]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.1.jar!/:5.3.1]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.0.jar!/:2.4.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.0.jar!/:2.4.0]
at com.example.jfrdemo.JfrdemoApplication.main(JfrdemoApplication.java:10) ~[classes!/:0.0.1-SNAPSHOT]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) ~[app.jar:0.0.1-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:107) ~[app.jar:0.0.1-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) ~[app.jar:0.0.1-SNAPSHOT]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) ~[app.jar:0.0.1-SNAPSHOT]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [de.mirkosertic.flightrecorderstarter.TriggerChecker]: Factory method 'triggerChecker' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.1.jar!/:5.3.1]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:651) ~[spring-beans-5.3.1.jar!/:5.3.1]
... 28 common frames omitted
Caused by: java.lang.NullPointerException: null
at de.mirkosertic.flightrecorderstarter.TriggerChecker.(TriggerChecker.java:70) ~[flight-recorder-starter-2.0.0.jar!/:2.0.0]
at de.mirkosertic.flightrecorderstarter.FlightRecorderConfiguration.triggerChecker(FlightRecorderConfiguration.java:49) ~[flight-recorder-starter-2.0.0.jar!/:2.0.0]
at de.mirkosertic.flightrecorderstarter.FlightRecorderConfiguration$$EnhancerBySpringCGLIB$$3320d9b9.CGLIB$triggerChecker$3() ~[flight-recorder-starter-2.0.0.jar!/:2.0.0]
at de.mirkosertic.flightrecorderstarter.FlightRecorderConfiguration$$EnhancerBySpringCGLIB$$3320d9b9$$FastClassBySpringCGLIB$$d14052db.invoke() ~[flight-recorder-starter-2.0.0.jar!/:2.0.0]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.3.1.jar!/:5.3.1]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.3.1.jar!/:5.3.1]
at de.mirkosertic.flightrecorderstarter.FlightRecorderConfiguration$$EnhancerBySpringCGLIB$$3320d9b9.triggerChecker() ~[flight-recorder-starter-2.0.0.jar!/:2.0.0]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.1.jar!/:5.3.1]
... 29 common frames omitted

[mirkosertic]

Thank you for reporting this bug!

I've release version 2.0.1 including a fix to Maven Central a few minutes ago. It should be synced to all mirrors in a few hours.

[evgenyz1]

Cool! Thank you!

[evgenyz1]

I've checked out. Everything is working well.