/
AbstractEndpointCondition.java
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/
AbstractEndpointCondition.java
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/*
* Copyright 2012-2019 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
*
* http://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.boot.actuate.autoconfigure.endpoint.condition;
import java.util.Map;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.EndpointExtension;
import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.core.type.MethodMetadata;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
/**
* Base class for {@link Endpoint} related {@link SpringBootCondition} implementations.
*
* @author Stephane Nicoll
* @author Andy Wilkinson
* @author Phillip Webb
*/
abstract class AbstractEndpointCondition extends SpringBootCondition {
AnnotationAttributes getEndpointAttributes(Class<?> annotationClass,
ConditionContext context, AnnotatedTypeMetadata metadata) {
return getEndpointAttributes(getEndpointType(annotationClass, context, metadata));
}
Class<?> getEndpointType(Class<?> annotationClass, ConditionContext context,
AnnotatedTypeMetadata metadata) {
Map<String, Object> attributes = metadata
.getAnnotationAttributes(annotationClass.getName());
if (attributes != null && attributes.containsKey("endpoint")) {
Class<?> target = (Class<?>) attributes.get("endpoint");
if (target != Void.class) {
return target;
}
}
Assert.state(
metadata instanceof MethodMetadata
&& metadata.isAnnotated(Bean.class.getName()),
"EndpointCondition must be used on @Bean methods when the endpoint is not specified");
MethodMetadata methodMetadata = (MethodMetadata) metadata;
try {
return ClassUtils.forName(methodMetadata.getReturnTypeName(),
context.getClassLoader());
}
catch (Throwable ex) {
throw new IllegalStateException("Failed to extract endpoint id for "
+ methodMetadata.getDeclaringClassName() + "."
+ methodMetadata.getMethodName(), ex);
}
}
AnnotationAttributes getEndpointAttributes(Class<?> type) {
AnnotationAttributes attributes = AnnotatedElementUtils
.findMergedAnnotationAttributes(type, Endpoint.class, true, true);
if (attributes != null) {
return attributes;
}
attributes = AnnotatedElementUtils.findMergedAnnotationAttributes(type,
EndpointExtension.class, false, true);
Assert.state(attributes != null,
"No endpoint is specified and the return type of the @Bean method is "
+ "neither an @Endpoint, nor an @EndpointExtension");
return getEndpointAttributes(attributes.getClass("endpoint"));
}
}