Micrometer-Prometheus module depends on micronaut-cache-caffeine

[parisapo]

Steps to Reproduce

1. Go to https://micronaut.io/launch/
2. Select Application Type 'Application
3. Select Java 11
4. Select Gradle
5. Select JUnit
6. Select Micronaut Version 2.0.0.M3 (currently availble
7. Add feature Micrometer -Prometheus
8. Generate the demo.zip-> download-> unzip-> ./gradlew run

Expected Behaviour

The application is expected to start.

Actual Behaviour

Exception is thrown

➜  prom-demo grdl run

> Task :run FAILED
19:59:21.695 [main] ERROR io.micronaut.runtime.Micronaut - Error starting Micronaut server: io/micronaut/cache/Cache
java.lang.NoClassDefFoundError: io/micronaut/cache/Cache
        at io.micronaut.configuration.metrics.binder.cache.$MicronautCaffeineCacheMetricsBinderDefinition.getTypeArgumentsMap(Unknown Source)
        at io.micronaut.context.AbstractBeanDefinition.getTypeArguments(AbstractBeanDefinition.java:204)
        at io.micronaut.inject.BeanDefinition.getTypeArguments(BeanDefinition.java:200)
        at io.micronaut.inject.BeanDefinition.getTypeParameters(BeanDefinition.java:212)
        at io.micronaut.inject.BeanDefinition.getTypeParameters(BeanDefinition.java:224)
        at io.micronaut.context.DefaultBeanContext$BeanKey.<init>(DefaultBeanContext.java:3161)
        at io.micronaut.context.DefaultBeanContext.doCreateBean(DefaultBeanContext.java:1756)
        at io.micronaut.context.DefaultBeanContext.createAndRegisterSingletonInternal(DefaultBeanContext.java:2549)
        at io.micronaut.context.DefaultBeanContext.createAndRegisterSingleton(DefaultBeanContext.java:2535)
        at io.micronaut.context.DefaultBeanContext.initializeEventListeners(DefaultBeanContext.java:1368)
        at io.micronaut.context.DefaultBeanContext.readAllBeanDefinitionClasses(DefaultBeanContext.java:2681)
        at io.micronaut.context.DefaultBeanContext.start(DefaultBeanContext.java:216)
        at io.micronaut.context.DefaultApplicationContext.start(DefaultApplicationContext.java:166)
        at io.micronaut.runtime.Micronaut.start(Micronaut.java:64)
        at io.micronaut.runtime.Micronaut.run(Micronaut.java:294)
        at io.micronaut.runtime.Micronaut.run(Micronaut.java:280)
        at com.example.Application.main(Application.java:8)
Caused by: java.lang.ClassNotFoundException: io.micronaut.cache.Cache
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        ... 17 common frames omitted

The application will start as expected only if you add the following

    implementation("io.micronaut.cache:micronaut-cache-caffeine")

Environment Information

• Operating System: MacOSX
• Micronaut Version: : 2.0.0.M3
• JDK Version: 11.06

Example Application

Sample application - with no functionality just add the Prometheus Metrics moduke

[graemerocher]

Fixed by e14e849

[parisapo]

many thanks