/* * Copyright 2013-2019 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.springframework.cloud.sleuth.annotation; import java.lang.annotation.Annotation; import java.lang.reflect.Method; import brave.sampler.Sampler; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.BeanFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.EnableAutoConfiguration; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import static org.assertj.core.api.Assertions.assertThat; import static org.assertj.core.api.Assertions.fail; @SpringBootTest(classes = SpanTagAnnotationHandlerTests.TestConfiguration.class) public class SpanTagAnnotationHandlerTests { @Autowired BeanFactory beanFactory; @Autowired TagValueResolver tagValueResolver; SpanTagAnnotationHandler handler; @BeforeEach public void setup() { this.handler = new SpanTagAnnotationHandler(this.beanFactory); } @Test public void shouldUseCustomTagValueResolver() throws NoSuchMethodException, SecurityException { Method method = AnnotationMockClass.class .getMethod("getAnnotationForTagValueResolver", String.class); Annotation annotation = method.getParameterAnnotations()[0][0]; if (annotation instanceof SpanTag) { String resolvedValue = this.handler.resolveTagValue((SpanTag) annotation, "test"); assertThat(resolvedValue).isEqualTo("Value from myCustomTagValueResolver"); } else { fail("Annotation was not SleuthSpanTag"); } } @Test public void shouldUseTagValueExpression() throws NoSuchMethodException, SecurityException { Method method = AnnotationMockClass.class .getMethod("getAnnotationForTagValueExpression", String.class); Annotation annotation = method.getParameterAnnotations()[0][0]; if (annotation instanceof SpanTag) { String resolvedValue = this.handler.resolveTagValue((SpanTag) annotation, "test"); assertThat(resolvedValue).isEqualTo("hello characters"); } else { fail("Annotation was not SleuthSpanTag"); } } @Test public void shouldReturnArgumentToString() throws NoSuchMethodException, SecurityException { Method method = AnnotationMockClass.class .getMethod("getAnnotationForArgumentToString", Long.class); Annotation annotation = method.getParameterAnnotations()[0][0]; if (annotation instanceof SpanTag) { String resolvedValue = this.handler.resolveTagValue((SpanTag) annotation, 15); assertThat(resolvedValue).isEqualTo("15"); } else { fail("Annotation was not SleuthSpanTag"); } } @Configuration @EnableAutoConfiguration protected static class TestConfiguration { // tag::custom_resolver[] @Bean(name = "myCustomTagValueResolver") public TagValueResolver tagValueResolver() { return parameter -> "Value from myCustomTagValueResolver"; } // end::custom_resolver[] @Bean Sampler alwaysSampler() { return Sampler.ALWAYS_SAMPLE; } } protected class AnnotationMockClass { // tag::resolver_bean[] @NewSpan public void getAnnotationForTagValueResolver( @SpanTag(key = "test", resolver = TagValueResolver.class) String test) { } // end::resolver_bean[] // tag::spel[] @NewSpan public void getAnnotationForTagValueExpression(@SpanTag(key = "test", expression = "'hello' + ' characters'") String test) { } // end::spel[] // tag::toString[] @NewSpan public void getAnnotationForArgumentToString(@SpanTag("test") Long param) { } // end::toString[] } }