Class RequestLatencyFilter

java.lang.Object
jakarta.servlet.GenericFilter
jakarta.servlet.http.HttpFilter
org.deltava.servlet.filter.RequestLatencyFilter
All Implemented Interfaces:
jakarta.servlet.Filter, jakarta.servlet.FilterConfig, Serializable
public class RequestLatencyFilter extends jakarta.servlet.http.HttpFilter
A servlet filter to track request latency between the front-end web server and the servlet container.
Since:
12.4
Version:
12.4
Author:
Luke
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    RequestLatencyFilter()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    doFilter(jakarta.servlet.http.HttpServletRequest req, jakarta.servlet.http.HttpServletResponse rsp, jakarta.servlet.FilterChain fc)
    Called by the servlet container on each request.
    void
    init(jakarta.servlet.FilterConfig cfg)
     

    Methods inherited from class jakarta.servlet.http.HttpFilter

    doFilter

    Methods inherited from class jakarta.servlet.GenericFilter

    getFilterConfig, getFilterName, getInitParameter, getInitParameterNames, getServletContext, init

    Methods inherited from class Object

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

    Methods inherited from interface jakarta.servlet.Filter

    destroy

  • Constructor Details

    • RequestLatencyFilter

      public RequestLatencyFilter()

  • Method Details

    • init

      public void init(jakarta.servlet.FilterConfig cfg) throws jakarta.servlet.ServletException
      Specified by:
      init in interface jakarta.servlet.Filter
      Overrides:
      init in class jakarta.servlet.GenericFilter
      Throws:
      jakarta.servlet.ServletException

    • doFilter

      public void doFilter(jakarta.servlet.http.HttpServletRequest req, jakarta.servlet.http.HttpServletResponse rsp, jakarta.servlet.FilterChain fc) throws IOException, jakarta.servlet.ServletException
      Called by the servlet container on each request. Tracks request queue latency from Apache HTTPD to Tomcat.
      Overrides:
      doFilter in class jakarta.servlet.http.HttpFilter
      Parameters:
      req - the request
      rsp - the response
      fc - the Filter Chain
      Throws:
      jakarta.servlet.ServletException - if a general error occurs
      IOException