🔍 Spring Boot Custom Annotation Logger with AOP

This project is a reusable Spring Boot AOP-based logging and method profiling library that provides a custom annotation @LogExecution to automatically log method entry, exit, arguments, return values, exceptions, and execution time.

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🎯 Features

• Simple @LogExecution annotation for any method
• Logs:
  • Method execution time
  • Request arguments (optional)
  • Response values (optional)
  • Exceptions (if thrown)
• Configurable log level: info, debug
• Includes unit tests
• Can be packaged as a reusable JAR in other Spring Boot apps

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🧪 Annotation Example

@LogExecution(logRequestArguments = true, logResponseArguments = true, debugLevel = "info")
public String processSomething(String input) {
    // your logic
    return "done";
}

📄 Sample Logs

INFO  - Method entry: com.ms.service.OrderService:processOrder:[12345]
INFO  - Method exit: com.ms.service.OrderService:processOrder:Processed
INFO  - com.ms.service.OrderService:processOrder execution completed in: 38 ms

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🧨 Exception Logs

INFO  - Method entry: com.ms.service.PaymentService:chargeCard:[null]
ERROR - Exception occurred at: com.ms.service.PaymentService:chargeCard:Card number cannot be null

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⚙️ How It Works

• Uses @Around advice in LogAspect
• Reads metadata from @LogExecution
• Logs input/output conditionally
• Handles exceptions via @AfterThrowing

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🏗️ How to Use

Option 1: Clone and Run Tests

git clone https://github.com/rutu-y-patel/spring-aop-custom-annotation.git
cd spring-aop-custom-annotation
mvn test

Option 2: Use as a Library in Other Projects

Build the library:

mvn clean install

Add dependency in your consuming project:

<dependency>
  <groupId>com.ms</groupId>
  <artifactId>logging-aspect</artifactId>
  <version>1.0.7</version>
</dependency>

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🛠️ Tech Stack

• Java 8+
• Spring Boot 2.7.x
• Spring AOP
• Maven

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📁 Project Structure

src/
├── main/java/com/ms/aspect/logging/
│   ├── LogExecution.java
│   ├── LogAspect.java
│   └── LogExecutionConfig.java
├── resources/META-INF/
│   └── spring.factories
├── test/
│   └── (unit tests)

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🌐 Related Search Terms (SEO)

This library can also be used as a lightweight method profiler in Spring Boot projects.
It is helpful if you're searching for:

• Spring Boot custom annotation
• Spring AOP logging
• Log method execution time in Java
• Reusable AOP logging library
• Custom annotation logger
• Spring Boot aspect logging
• Java method profiling with AOP

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📜 License

This project is licensed under the MIT License.
Use it freely in your projects with proper attribution.