Merge pull request #23 from RHoKAustralia/adding-aspects

Added Spring AOPs for application loggings

backend/pom.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
@@ -15,7 +16,7 @@
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
 		<version>2.0.0.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
+		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
@@ -39,6 +40,11 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-aop</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>

backend/src/main/java/com/onemda/onemdabackend/aop/ExceptionLoggingAspect.java

@@ -0,0 +1,22 @@
+package com.onemda.onemdabackend.aop;
+
+import org.aspectj.lang.annotation.AfterThrowing;
+import org.aspectj.lang.annotation.Aspect;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+@Aspect
+public class ExceptionLoggingAspect {
+
+	Logger LOGGER = LoggerFactory.getLogger(ExceptionLoggingAspect.class);
+
+
+	@AfterThrowing(pointcut="com.onemda.onemdabackend.aop.SystemArchitecture.Repository() ||"
+			+ "com.onemda.onemdabackend.aop.SystemArchitecture.Service()",
+			throwing="ex")
+	public void logException(Exception ex) {
+		LOGGER.error("Exception Occured: "+ex);
+	}
+}

backend/src/main/java/com/onemda/onemdabackend/aop/PerformanceAspect.java

@@ -0,0 +1,33 @@
+package com.onemda.onemdabackend.aop;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StopWatch;
+
+@Component
+@Aspect
+public class PerformanceAspect {
+
+	Logger LOGGER = LoggerFactory.getLogger(PerformanceAspect.class);
+
+	@Around("com.onemda.onemdabackend.aop.SystemArchitecture.Repository()")
+	public void logPerformance(ProceedingJoinPoint joinPoint) throws Throwable {
+		String methodInformation = joinPoint.getStaticPart().getSignature().toString();
+
+		StopWatch stopWatch = new StopWatch(methodInformation);
+		stopWatch.start();
+
+		try {
+			joinPoint.proceed();
+		} catch (Exception e) {
+			// TODO: handle exception
+		}finally {
+			stopWatch.stop();
+			LOGGER.info(stopWatch.shortSummary());
+		}
+	}
+}

backend/src/main/java/com/onemda/onemdabackend/aop/SystemArchitecture.java

@@ -0,0 +1,17 @@
+package com.onemda.onemdabackend.aop;
+
+import org.aspectj.lang.annotation.Pointcut;
+
+public class SystemArchitecture {
+
+	//Any class annotated with @Repository
+	@Pointcut("execution(* (@org.springframework.stereotype.Repository *).*(..))")
+	public void Repository() {
+
+	}
+
+	@Pointcut("execution(* (@org.springframework.stereotype.Service *).*(..))")
+	public void Service() {
+
+	}
+}

backend/src/main/java/com/onemda/onemdabackend/aop/TracingAspect.java

@@ -0,0 +1,28 @@
+package com.onemda.onemdabackend.aop;
+
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.annotation.After;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+@Aspect
+public class TracingAspect {
+
+	Logger LOGGER = LoggerFactory.getLogger(TracingAspect.class);
+
+	@Before("com.onemda.onemdabackend.aop.SystemArchitecture.Repository() ||"
+			+ "com.onemda.onemdabackend.aop.SystemArchitecture.Service()")
+	public void logTheEntry(JoinPoint joinPoint ) {
+		LOGGER.info("Entering into : "+joinPoint.getStaticPart().getSignature().toString());
+	}
+
+	@After("com.onemda.onemdabackend.aop.SystemArchitecture.Repository() ||"
+			+ "com.onemda.onemdabackend.aop.SystemArchitecture.Service()")
+	public void logTheExit(JoinPoint joinPoint ) {
+		LOGGER.info("Exiting from : "+joinPoint.getStaticPart().getSignature().toString());
+	}
+}