Package com.example.blogs.app.logging

Class RequestLoggingFilter

java.lang.Object

org.springframework.web.filter.GenericFilterBean

org.springframework.web.filter.OncePerRequestFilter

com.example.blogs.app.logging.RequestLoggingFilter

All Implemented Interfaces:

jakarta.servlet.Filter, Aware, BeanNameAware, DisposableBean, InitializingBean, EnvironmentAware, EnvironmentCapable, ServletContextAware

@Component
@Order(1)
public class RequestLoggingFilter
extends OncePerRequestFilter

Generates unique request IDs and logs HTTP request completion metrics including duration and status.

Field Summary

Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

ALREADY_FILTERED_SUFFIX

Fields inherited from class org.springframework.web.filter.GenericFilterBean

logger

Constructor Summary

Constructors

Constructor	Description
RequestLoggingFilter()

Method Summary

Modifier and Type	Method	Description
protected void	doFilterInternal(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response, jakarta.servlet.FilterChain filterChain)	Wraps each request with a unique request ID, measures execution time, and logs completion details.

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

doFilter, doFilterNestedErrorDispatch, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilter, shouldNotFilterAsyncDispatch, shouldNotFilterErrorDispatch

Methods inherited from class org.springframework.web.filter.GenericFilterBean

addRequiredProperty, afterPropertiesSet, createEnvironment, destroy, getEnvironment, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setEnvironment, setServletContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RequestLoggingFilter

public RequestLoggingFilter()

Method Details

doFilterInternal

protected void doFilterInternal(jakarta.servlet.http.HttpServletRequest request,
 jakarta.servlet.http.HttpServletResponse response,
 jakarta.servlet.FilterChain filterChain)
                         throws jakarta.servlet.ServletException,
IOException

Wraps each request with a unique request ID, measures execution time, and logs completion details. Ensures MDC is properly cleaned up after request processing regardless of success or failure.

Specified by:

doFilterInternal in class OncePerRequestFilter

Parameters:

request - the HTTP request

response - the HTTP response

filterChain - the filter chain to continue processing

Throws:

jakarta.servlet.ServletException - if request processing fails

IOException - if an I/O error occurs during filtering