io.micrometer.tracing.annotation

public Class SpanTagAnnotationHandler

Class Inheritance

extends AnnotationHandler<SpanCustomizer>

java.lang.Object
io.micrometer.common.annotation.AnnotationHandler
io.micrometer.tracing.annotation.SpanTagAnnotationHandler

Imports

io.micrometer.common.KeyValue, io.micrometer.common.annotation.NoOpValueResolver, .AnnotationHandler, .ValueExpressionResolver, .ValueResolver, io.micrometer.common.util.StringUtils, io.micrometer.tracing.SpanCustomizer, java.util.function.Function

This class is able to find all methods annotated with the Micrometer Tracing annotations. All methods mean that if you have both an interface and an implementation annotated with Micrometer Tracing annotations then this class is capable of finding both of them and merging into one set of tracing information.

This information is then used to add proper tags to the span from the method arguments that are annotated with SpanTag. Code ported from Spring Cloud Sleuth.

Author: Christian Schwerdtfeger
Since: 1.1.0

Constructor Summary

Access	Constructor and Description
public	SpanTagAnnotationHandler(Function<Class<? extends ValueResolver>, ? extends ValueResolver> resolverProvider, Function<Class<? extends ValueExpressionResolver>, ? extends ValueExpressionResolver> expressionResolverProvider)

Method Summary

Modifier and Type	Method and Description
private static String	resolveTagKey(SpanTag annotation)
pack-priv static String	resolveTagValue(SpanTag annotation, Object argument, Function<Class<? extends ValueResolver>, ? extends ValueResolver> resolverProvider, Function<Class<? extends ValueExpressionResolver>, ? extends ValueExpressionResolver> expressionResolverProvider)

Inherited from io.micrometer.common.annotation.AnnotationHandler:: addAnnotatedParameters getExpressionResolverProvider getResolverProvider

Constructor Detail

SpanTagAnnotationHandler	back to summary
public SpanTagAnnotationHandler(Function<Class<? extends ValueResolver>, ? extends ValueResolver> resolverProvider, Function<Class<? extends ValueExpressionResolver>, ? extends ValueExpressionResolver> expressionResolverProvider)

Method Detail

resolveTagKey	back to summary
private static String resolveTagKey(SpanTag annotation)

resolveTagValue	back to summary
pack-priv static String resolveTagValue(SpanTag annotation, Object argument, Function<Class<? extends ValueResolver>, ? extends ValueResolver> resolverProvider, Function<Class<? extends ValueExpressionResolver>, ? extends ValueExpressionResolver> expressionResolverProvider)