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Anchors in YAML configuration files throw UnsupportedOperationException #33404

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jpeschke2608 opened this issue Nov 29, 2022 · 2 comments
Closed

Anchors in YAML configuration files throw UnsupportedOperationException #33404

jpeschke2608 opened this issue Nov 29, 2022 · 2 comments
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@mhalbritter
Labels
type: regression A regression from a previous release
Milestone
3.0.1

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@jpeschke2608
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SpringBoot Version: 3.0.0
SnakeYAML Version: 1.33

When using YAML achors in an application.yml configuration file to re-use configuration blocks, for example:

some:
  path: &anchor
    config: 
      key: value
  anotherpath: 
     << : *anchor

Spring Boot throws an UnsupportedOperationException within Snakeyaml's SafeConstructor class during start up due to a modification on a mutable collection (see below).

However, same configuration works fine with Spring Boot 2.7.5. (same snakeyaml version).

Thanks a lot in advance for any ideas.

java.lang.UnsupportedOperationException: null
	at java.base/java.util.ImmutableCollections.uoe(ImmutableCollections.java:142)
	at java.base/java.util.ImmutableCollections$ListItr.remove(ImmutableCollections.java:380)
	at org.yaml.snakeyaml.constructor.SafeConstructor.mergeNode(SafeConstructor.java:160)
	at org.yaml.snakeyaml.constructor.SafeConstructor.flattenMapping(SafeConstructor.java:83)
	at org.yaml.snakeyaml.constructor.SafeConstructor.flattenMapping(SafeConstructor.java:76)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:212)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:557)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:600)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:270)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:253)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.constructObject(OriginTrackedYamlLoader.java:118)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:581)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:213)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:557)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:600)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:270)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:253)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.constructObject(OriginTrackedYamlLoader.java:118)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:581)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:213)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:557)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:600)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:270)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:253)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.constructObject(OriginTrackedYamlLoader.java:118)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:581)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:213)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:557)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:600)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:270)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:253)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.constructObject(OriginTrackedYamlLoader.java:118)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:581)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:213)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:557)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:600)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:270)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:253)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.constructObject(OriginTrackedYamlLoader.java:118)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:207)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:172)
	at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.getData(OriginTrackedYamlLoader.java:98)
	at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:499)
	at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:198)
	at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:166)
	at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:83)
	at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:50)
	at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:54)
	at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:36)
	at org.springframework.boot.context.config.ConfigDataLoaders.load(ConfigDataLoaders.java:95)
	at org.springframework.boot.context.config.ConfigDataImporter.load(ConfigDataImporter.java:128)
	at org.springframework.boot.context.config.ConfigDataImporter.resolveAndLoad(ConfigDataImporter.java:86)
	at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:115)
	at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:242)
	at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:229)
	at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:96)
	at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:89)
	at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:109)
	at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:94)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
	at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81)
	at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64)
	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118)
	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:352)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291)
@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged label Nov 29, 2022
@mhalbritter mhalbritter self-assigned this Nov 29, 2022
@mhalbritter mhalbritter added type: bug A general bug and removed status: waiting-for-triage An issue we've not yet triaged labels Nov 29, 2022
@mhalbritter mhalbritter added this to the 3.0.x milestone Nov 29, 2022
@mhalbritter mhalbritter added type: regression A regression from a previous release and removed type: bug A general bug labels Nov 29, 2022
@mhalbritter mhalbritter modified the milestones: 3.0.x, 3.0.1 Nov 29, 2022
@mhalbritter
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Thanks for the report, fixed!

@himanshunp
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Thanks for report and fix. I can’t wait for the new release.

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