io.micrometer.tracing.annotation.SpanAspect Maven / Gradle / Ivy
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/*
* Copyright 2023 VMware, Inc.
*
* 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 io.micrometer.tracing.annotation;
import io.micrometer.common.lang.NonNullApi;
import io.micrometer.common.lang.Nullable;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import java.lang.reflect.Method;
/**
*
* AspectJ aspect for intercepting types or methods annotated with
* {@link NewSpan @NewSpan} or {@link ContinueSpan @ContinueSpan}.
*
* @author Marcin Grzejszczak
* @since 1.1.0
* @see ImperativeMethodInvocationProcessor
*/
@Aspect
@NonNullApi
public class SpanAspect {
private final MethodInvocationProcessor methodInvocationProcessor;
public SpanAspect(MethodInvocationProcessor methodInvocationProcessor) {
this.methodInvocationProcessor = methodInvocationProcessor;
}
@Around("@annotation(io.micrometer.tracing.annotation.ContinueSpan)")
@Nullable
public Object continueSpanMethod(ProceedingJoinPoint pjp) throws Throwable {
Method method = getMethod(pjp);
ContinueSpan continueSpan = method.getAnnotation(ContinueSpan.class);
return methodInvocationProcessor.process(new SpanAspectMethodInvocation(pjp, method), null, continueSpan);
}
@Around("@annotation(io.micrometer.tracing.annotation.NewSpan)")
@Nullable
public Object newSpanMethod(ProceedingJoinPoint pjp) throws Throwable {
Method method = getMethod(pjp);
NewSpan newSpan = method.getAnnotation(NewSpan.class);
return methodInvocationProcessor.process(new SpanAspectMethodInvocation(pjp, method), newSpan, null);
}
private Method getMethod(ProceedingJoinPoint pjp) throws NoSuchMethodException {
Method method = ((MethodSignature) pjp.getSignature()).getMethod();
return pjp.getTarget().getClass().getMethod(method.getName(), method.getParameterTypes());
}
}