class path resource [io/axoniq/axonserver/config/MetricsConfiguration.class] cannot be opened because it does not exist

Question

Am trying to create a microservice using spring boot and axon framework to achieve CQRS and Event sourcing. Am getting the FileNotFoundException when I run the Application. I couldn't find any solution on internet. Can someone guide me to the resolution? Let me know if I need to add any details.

Error:

java.lang.IllegalStateException: Unable to read meta-data for class io.axoniq.axonserver.config.MetricsConfiguration
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getAnnotationMetadata(AutoConfigurationSorter.java:237) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getOrder(AutoConfigurationSorter.java:208) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.access$000(AutoConfigurationSorter.java:154) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter.lambda$getInPriorityOrder$0(AutoConfigurationSorter.java:63) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:355) ~[na:na]
at java.base/java.util.TimSort.sort(TimSort.java:234) ~[na:na]
at java.base/java.util.Arrays.sort(Arrays.java:1515) ~[na:na]
at java.base/java.util.ArrayList.sort(ArrayList.java:1750) ~[na:na]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter.getInPriorityOrder(AutoConfigurationSorter.java:62) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.boot.autoconfigure.AutoConfigurationImportSelector$AutoConfigurationGroup.sortAutoConfigurations(AutoConfigurationImportSelector.java:468) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.boot.autoconfigure.AutoConfigurationImportSelector$AutoConfigurationGroup.selectImports(AutoConfigurationImportSelector.java:453) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGrouping.getImports(ConfigurationClassParser.java:882) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGroupingHandler.processGroupImports(ConfigurationClassParser.java:809) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorHandler.process(ConfigurationClassParser.java:780) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:193) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.19.jar:5.3.19]
at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:64) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.7.jar:2.6.7]
at com.estocks.estockscommandservice.EstocksCommandServiceApplication.main(EstocksCommandServiceApplication.java:15) ~[classes/:na]
Caused by: java.io.FileNotFoundException: class path resource [io/axoniq/axonserver/config/MetricsConfiguration.class] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:199) ~[spring-core-5.3.19.jar:5.3.19]
at org.springframework.core.type.classreading.SimpleMetadataReader.getClassReader(SimpleMetadataReader.java:55) ~[spring-core-5.3.19.jar:5.3.19]
at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:49) ~[spring-core-5.3.19.jar:5.3.19]
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[spring-core-5.3.19.jar:5.3.19]
at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:86) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:73) ~[spring-boot-2.6.7.jar:2.6.7]
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[spring-core-5.3.19.jar:5.3.19]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getAnnotationMetadata(AutoConfigurationSorter.java:233) ~[spring-boot-autoconfigure-2.6.7.jar:2.6.7]
... 27 common frames omitted

pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.6.7</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
    <java.version>11</java.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>io.micrometer</groupId>
        <artifactId>micrometer-registry-prometheus</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.axonframework</groupId>
        <artifactId>axon-spring-boot-starter</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-webflux-core</artifactId>
        <version>1.6.4</version>
    </dependency>
    <dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-webflux-ui</artifactId>
        <version>1.6.4</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>io.projectreactor</groupId>
        <artifactId>reactor-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.axonframework</groupId>
        <artifactId>axon-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.axonframework</groupId>
            <artifactId>axon-bom</artifactId>
            <version>4.5.8</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

score 0 · Answer 1 · answered May 02 '22 at 07:38

0

I'm guessing you're hitting a versioning issue here, @sai. As far as I know, the latest axon-bom you can use is 4.5.12, not 4.5.8 which you're using.

Furthermore, Axon Framework isn't built with Spring Boot 2.6.7 at the moment. I recall having some wiring predicaments when I paired the latest Spring Boot with Axon's Reactor extension (Project Reactor introduced some breaking changes, sadly enough). This required me to move back to 2.6.6.

So, concluding, please try out a combination of axon-bom 4.5.12 and spring-boot-starter-parent 2.6.6!

answered May 02 '22 at 07:38

Steven

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thanks for response, @Steven. I tried updating the versions. But still couldn't resolve the issue. Any idea on what I could be doing wrong? – sai May 02 '22 at 12:22
Have you taken a look through the dependency tree of your project? I am still guessing there might be something amiss with different versions... With the dependency tree you should be able to see if you're consistently using the same version of your dependencies. – Steven May 05 '22 at 09:08
You can also try to setup a new project using the AxonIQ Initializr... I guess the dependencies and the simple setup should work out of the box! https://start.axoniq.io/ – Lucas Campos May 05 '22 at 12:45
thanks @steven, I was able to fix the issue by creating a totally new project with the same versions mentioned in question and excluding project reactor. A question out of context, is there a way to contact your team(Axon) for live support on some queries around axon-kafka? – sai May 05 '22 at 14:49
@LucasCampos, thanks for response. I might try that out soon. – sai May 05 '22 at 14:51
That's likely an option, @sai, although you'd likely move through some 'salesy' kinda guys too. Here's the contact page if you'd want to set up a conversation - https://www.axoniq.io/contact – Steven May 09 '22 at 13:46

class path resource [io/axoniq/axonserver/config/MetricsConfiguration.class] cannot be opened because it does not exist

1 Answers1