CODEWITHSUNDEEP
javaspringspring-bootconfigurationlombok
Josh M.
Josh M.

Reputation: 27791

Using @ConfigurationProperties for nesting or direct access

I'd like to be able to access my "root" properties, or a subset. So I attempted to do this:

RootProperties

@Configuration
@ConfigurationProperties
@Data
@Validated
public class RootProperties
{
    @NotNull
    private SdkProperties sdk;
}

SdkProperties

@Configuration
@ConfigurationProperties
@Data
@Validated
public class SdkProperties
{
    @NotEmpty
    private String apiKey

    // ... etc.
}

So this way I can either autowire the full RootProperties, or just the SdkProperties class, depending on what I need to access for a given context.

However, when I have it configured this way, I get a stack overflow from Spring:

Cause: java.lang.StackOverflowError
    at jdk.internal.reflect.GeneratedMethodAccessor2123.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.springframework.boot.configurationprocessor.fieldvalues.javac.Tree.accept(Tree.java:44)
    at org.springframework.boot.configurationprocessor.fieldvalues.javac.JavaCompilerFieldValuesParser.getFieldValues(JavaCompilerFieldValuesParser.java:51)
    at org.springframework.boot.configurationprocessor.TypeElementMembers.process(TypeElementMembers.java:81)
    at org.springframework.boot.configurationprocessor.TypeElementMembers.<init>(TypeElementMembers.java:68)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processTypeElement(ConfigurationMetadataAnnotationProcessor.java:273)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processNestedType(ConfigurationMetadataAnnotationProcessor.java:423)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.lambda$processNestedLombokTypes$3(ConfigurationMetadataAnnotationProcessor.java:364)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processNestedLombokTypes(ConfigurationMetadataAnnotationProcessor.java:361)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processTypeElement(ConfigurationMetadataAnnotationProcessor.java:279)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processNestedType(ConfigurationMetadataAnnotationProcessor.java:423)

    ...

    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processNestedType(ConfigurationMetadataAnnotationProcessor.java:423)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.lambda$processNestedLombokTypes$3(ConfigurationMetadataAnnotationProcessor.java:364)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processNestedLombokTypes(ConfigurationMetadataAnnotationProcessor.java:361)
    at org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor.processTypeElement(ConfigurationMetadataAnnotationProcessor.java:279)

    ( ... hundreds more of these blocks ... )

How can I support this workflow?

Upvotes: 0

Views: 337

Answers (1)

Marko Strainovic
Marko Strainovic

Reputation: 576

You should use @NestedConfigurationProperty

I think old post answers your question https://stackoverflow.com/a/29588215/8308536

Upvotes: 1

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