Package org.codelibs.fess.filter

Class LoadControlFilter

java.lang.Object
org.codelibs.fess.filter.LoadControlFilter
All Implemented Interfaces:
jakarta.servlet.Filter
public class LoadControlFilter extends Object implements jakarta.servlet.Filter
Filter for CPU load-based request control. Returns HTTP 429 (Too Many Requests) when CPU usage exceeds configurable thresholds. Web and API requests have independent threshold settings.

  • Constructor Summary

    Constructors
    Constructor
    Description
    LoadControlFilter()
    Creates a new instance of LoadControlFilter.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    doFilter(jakarta.servlet.ServletRequest request, jakarta.servlet.ServletResponse response, jakarta.servlet.FilterChain chain)
     
    protected boolean
    isExcludedPath(String path)
    Checks if the given path should be excluded from load control.
    protected void
    sendApiResponse(jakarta.servlet.http.HttpServletResponse response)
    Sends a 429 JSON response for API requests.

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface jakarta.servlet.Filter

    destroy, init

  • Constructor Details

    • LoadControlFilter

      public LoadControlFilter()
      Creates a new instance of LoadControlFilter.

  • Method Details

    • doFilter

      public void doFilter(jakarta.servlet.ServletRequest request, jakarta.servlet.ServletResponse response, jakarta.servlet.FilterChain chain) throws IOException, jakarta.servlet.ServletException
      Specified by:
      doFilter in interface jakarta.servlet.Filter
      Throws:
      IOException
      jakarta.servlet.ServletException

    • isExcludedPath

      protected boolean isExcludedPath(String path)
      Checks if the given path should be excluded from load control.
      Parameters:
      path - the request path
      Returns:
      true if the path should be excluded

    • sendApiResponse

      protected void sendApiResponse(jakarta.servlet.http.HttpServletResponse response) throws IOException
      Sends a 429 JSON response for API requests.
      Parameters:
      response - the HTTP response
      Throws:
      IOException - if an I/O error occurs