[BUG] AppConfig throws java.lang.UnsupportedOperationException on refresh

[davidkarlsen]

Describe the bug

java.lang.UnsupportedOperationException on refresh, see stack

Exception or Stack Trace

{"className":"java.lang.UnsupportedOperationException","message":"null","stepArray":[{"className":"java.util.Collections$UnmodifiableList","methodName":"set","fileName":"null","lineNumber":-1},{"className":"java.util.Collections","methodName":"swap","fileName":"null","lineNumber":-1},{"className":"java.util.Collections","methodName":"reverse","fileName":"null","lineNumber":-1},{"className":"com.azure.spring.cloud.appconfiguration.config.implementation.properties.AppConfigurationKeyValueSelector","methodName":"getLabelFilter","fileName":"AppConfigurationKeyValueSelector.java","lineNumber":84},{"className":"com.azure.spring.cloud.appconfiguration.config.implementation.AzureAppConfigDataLoader","methodName":"createSettings","fileName":"AzureAppConfigDataLoader.java","lineNumber":244},{"className":"com.azure.spring.cloud.appconfiguration.config.implementation.AzureAppConfigDataLoader","methodName":"load","fileName":"AzureAppConfigDataLoader.java","lineNumber":154},{"className":"com.azure.spring.cloud.appconfiguration.config.implementation.AzureAppConfigDataLoader","methodName":"load","fileName":"AzureAppConfigDataLoader.java","lineNumber":38},{"className":"org.springframework.boot.context.config.ConfigDataLoaders","methodName":"load","fileName":"ConfigDataLoaders.java","lineNumber":96},{"className":"org.springframework.boot.context.config.ConfigDataImporter","methodName":"load","fileName":"ConfigDataImporter.java","lineNumber":132},{"className":"org.springframework.boot.context.config.ConfigDataImporter","methodName":"resolveAndLoad","fileName":"ConfigDataImporter.java","lineNumber":87},{"className":"org.springframework.boot.context.config.ConfigDataEnvironmentContributors","methodName":"withProcessedImports","fileName":"ConfigDataEnvironmentContributors.java","lineNumber":129},{"className":"org.springframework.boot.context.config.ConfigDataEnvironment","methodName":"processWithProfiles","fileName":"ConfigDataEnvironment.java","lineNumber":318},{"className":"org.springframework.boot.context.config.ConfigDataEnvironment","methodName":"processAndApply","fileName":"ConfigDataEnvironment.java","lineNumber":237},{"className":"org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor","methodName":"postProcessEnvironment","fileName":"ConfigDataEnvironmentPostProcessor.java","lineNumber":96},{"className":"org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor","methodName":"postProcessEnvironment","fileName":"ConfigDataEnvironmentPostProcessor.java","lineNumber":89},{"className":"org.springframework.boot.env.EnvironmentPostProcessorApplicationListener","methodName":"onApplicationEnvironmentPreparedEvent","fileName":"EnvironmentPostProcessorApplicationListener.java","lineNumber":132},{"className":"org.springframework.boot.env.EnvironmentPostProcessorApplicationListener","methodName":"onApplicationEvent","fileName":"EnvironmentPostProcessorApplicationListener.java","lineNumber":115},{"className":"org.springframework.context.event.SimpleApplicationEventMulticaster","methodName":"doInvokeListener","fileName":"SimpleApplicationEventMulticaster.java","lineNumber":185},{"className":"org.springframework.context.event.SimpleApplicationEventMulticaster","methodName":"invokeListener","fileName":"SimpleApplicationEventMulticaster.java","lineNumber":178},{"className":"org.springframework.context.event.SimpleApplicationEventMulticaster","methodName":"multicastEvent","fileName":"SimpleApplicationEventMulticaster.java","lineNumber":156},{"className":"org.springframework.context.event.SimpleApplicationEventMulticaster","methodName":"multicastEvent","fileName":"SimpleApplicationEventMulticaster.java","lineNumber":138},{"className":"org.springframework.boot.context.event.EventPublishingRunListener","methodName":"multicastInitialEvent","fileName":"EventPublishingRunListener.java","lineNumber":136},{"className":"org.springframework.boot.context.event.EventPublishingRunListener","methodName":"environmentPrepared","fileName":"EventPublishingRunListener.java","lineNumber":81},{"className":"org.springframework.boot.SpringApplicationRunListeners","methodName":"lambda$environmentPrepared$2","fileName":"SpringApplicationRunListeners.java","lineNumber":64},{"className":"java.lang.Iterable","methodName":"forEach","fileName":"null","lineNumber":-1},{"className":"org.springframework.boot.SpringApplicationRunListeners","methodName":"doWithListeners","fileName":"SpringApplicationRunListeners.java","lineNumber":118},{"className":"org.springframework.boot.SpringApplicationRunListeners","methodName":"doWithListeners","fileName":"SpringApplicationRunListeners.java","lineNumber":112},{"className":"org.springframework.boot.SpringApplicationRunListeners","methodName":"environmentPrepared","fileName":"SpringApplicationRunListeners.java","lineNumber":63},{"className":"org.springframework.boot.SpringApplication","methodName":"prepareEnvironment","fileName":"SpringApplication.java","lineNumber":353},{"className":"org.springframework.boot.SpringApplication","methodName":"run","fileName":"SpringApplication.java","lineNumber":313},{"className":"org.springframework.boot.SpringApplication","methodName":"run","fileName":"SpringApplication.java","lineNumber":1361},{"className":"org.springframework.boot.SpringApplication","methodName":"run","fileName":"SpringApplication.java","lineNumber":1350},{"className":"no.dnb.payment.sre.refapp.domainapi.Main","methodName":"main","fileName":"Main.java","lineNumber":16},{"className":"jdk.internal.reflect.DirectMethodHandleAccessor","methodName":"invoke","fileName":"null","lineNumber":-1},{"className":"java.lang.reflect.Method","methodName":"invoke","fileName":"null","lineNumber":-1},{"className":"org.springframework.boot.loader.launch.Launcher","methodName":"launch","fileName":"Launcher.java","lineNumber":102},{"className":"org.springframework.boot.loader.launch.Launcher","methodName":"launch","fileName":"Launcher.java","lineNumber":64},{"className":"org.springframework.boot.loader.launch.JarLauncher","methodName":"main","fileName":"JarLauncher.java","lineNumber":40}]}

To Reproduce
Steps to reproduce the behavior:

libs:

<dependency>
      <groupId>com.azure.spring</groupId>
      <artifactId>spring-cloud-azure-starter-appconfiguration-config</artifactId>
    </dependency>
    <dependency>
      <groupId>com.azure.spring</groupId>
      <artifactId>spring-cloud-azure-feature-management-web</artifactId>
    </dependency>

from v6.0.0.

Config:

---
spring:
  config:
    activate:
      on-profile: "!dev"
    import: azureAppConfiguration
  cloud:
    azure:
      appconfiguration:
        stores:
          - endpoint: ${APP_CONFIG_ENDPOINT}
            replica-discovery-enabled: false
            feature-flags:
              enabled: true
              selects:
                - label-filter: sre-refapp
        endpoint: ${APP_CONFIG_ENDPOINT}

Code Snippet
See stack

Expected behavior

You should have code that don't have basic issues and actually works.

Screenshots
If applicable, add screenshots to help explain your problem.

Setup (please complete the following information):

• OS: [e.g. iOS]
• IDE: [e.g. IntelliJ]
• Library/Libraries: [e.g. com.azure:azure-core:1.16.0 (groupId:artifactId:version)]
• Java version: [e.g. 8]
• App Server/Environment: [e.g. Tomcat, WildFly, Azure Function, Apache Spark, Databricks, IDE plugin or anything special]
• Frameworks: [e.g. Spring Boot, Micronaut, Quarkus, etc]

If you suspect a dependency version mismatch (e.g. you see NoClassDefFoundError, NoSuchMethodError or similar), please check out Troubleshoot dependency version conflict article first. If it doesn't provide solution for the problem, please provide:

• verbose dependency tree (mvn dependency:tree -Dverbose)
• exception message, full stack trace, and any available logs

Additional context
Add any other context about the problem here.

Information Checklist
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• Bug Description Added
• Repro Steps Added
• Setup information Added

[github-actions]

@moarychan @Netyyyy @rujche @saragluna

[github-actions]

Thank you for your feedback. Tagging and routing to the team member best able to assist.

[samvaity]

@saragluna could you take a look at the above issue?

[Netyyyy]

Hi @mrm9084 , please help take a look, thanks!