Creating a Custom Interceptor for Method Logging

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Introduction

n modern microservices architectures, logging is a crucial aspect of observability. It helps developers and operations teams monitor the behavior of their applications, debug issues, and track performance. One of the effective ways to implement logging is through Interceptors, which provide a mechanism to separate cross-cutting concerns such as logging, security, and monitoring from the core business logic.

In this blog, we’ll explore how to create a custom logging interceptor in using Interceptor Binding.

Understanding the Code

Let’s start by analyzing the provided code snippet:

package com.practicaldeveloper.blog.store.logging;

import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import static java.lang.annotation.ElementType.METHOD;

import jakarta.interceptor.InterceptorBinding;
import java.lang.annotation.Target;

@InterceptorBinding
@Retention(RUNTIME)
@Target({METHOD})
public @interface Loggable {
}

Explanation:

1. @InterceptorBinding — This annotation defines a binding type for an interceptor. It allows us to associate an interceptor with methods annotated with @Loggable.
2. @Retention(RUNTIME) —…