Java tutorial
package com.thinkbiganalytics.install.inspector.aop.logging; /*- * #%L * kylo-install-inspector * %% * Copyright (C) 2017 - 2018 ThinkBig Analytics * %% * 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. * #L% */ import io.github.jhipster.config.JHipsterConstants; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.AfterThrowing; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Pointcut; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.core.env.Environment; import java.util.Arrays; @Aspect public class LoggingAspect { private final Logger log = LoggerFactory.getLogger(this.getClass()); private final Environment env; public LoggingAspect(Environment env) { this.env = env; } /** * Pointcut that matches all repositories, services and Web REST endpoints. */ @Pointcut("within(@org.springframework.stereotype.Repository *)" + " || within(@org.springframework.stereotype.Service *)" + " || within(@org.springframework.web.bind.annotation.RestController *)") public void springBeanPointcut() { // Method is empty as this is just a Pointcut, the implementations are in the advices. } /** * Pointcut that matches all Spring beans in the application's main packages. */ @Pointcut("within(com.thinkbiganalytics.install.inspector.repository..*)" + " || within(com.thinkbiganalytics.install.inspector.service..*)" + " || within(com.thinkbiganalytics.install.inspector.web.rest..*)") public void applicationPackagePointcut() { // Method is empty as this is just a Pointcut, the implementations are in the advices. } /** * Advice that logs methods throwing exceptions. * * @param joinPoint join point for advice * @param e exception */ @AfterThrowing(pointcut = "applicationPackagePointcut() && springBeanPointcut()", throwing = "e") public void logAfterThrowing(JoinPoint joinPoint, Throwable e) { if (env.acceptsProfiles(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)) { log.error("Exception in {}.{}() with cause = \'{}\' and exception = \'{}\'", joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName(), e.getCause() != null ? e.getCause() : "NULL", e.getMessage(), e); } else { log.error("Exception in {}.{}() with cause = {}", joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName(), e.getCause() != null ? e.getCause() : "NULL"); } } /** * Advice that logs when a method is entered and exited. * * @param joinPoint join point for advice * @return result * @throws Throwable throws IllegalArgumentException */ @Around("applicationPackagePointcut() && springBeanPointcut()") public Object logAround(ProceedingJoinPoint joinPoint) throws Throwable { if (log.isDebugEnabled()) { log.debug("Enter: {}.{}() with argument[s] = {}", joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName(), Arrays.toString(joinPoint.getArgs())); } try { Object result = joinPoint.proceed(); if (log.isDebugEnabled()) { log.debug("Exit: {}.{}() with result = {}", joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName(), result); } return result; } catch (IllegalArgumentException e) { log.error("Illegal argument: {} in {}.{}()", Arrays.toString(joinPoint.getArgs()), joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName()); throw e; } } }