org.hippoecm.hst.servlet
Class HstPingServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.hippoecm.hst.servlet.HstPingServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class HstPingServlet
extends javax.servlet.http.HttpServlet

A servlet that can be used to check if the repository is up-and-running. This is especially useful for load balancer checks. The check does the following steps:

• Check for static custom return message, else
• obtain the session from the specified session pool
• try to read the check node
• logout and close jcr session
• logout and close http session

On success the servlet prints "Ok" and returns a 200 status, on failure, the error is printed and a 500 (internal server error) status is returned.

In case the custom message is provided, a service unavailable error (503) is returned

To enable the servlet add the following to your web.xml

HstPingServlet org.hippoecm.repository.HstPingServlet check-pool default check-node content/documents HstPingServlet /ping/* ]]>

See Also:

Serialized Form

Constructor Summary

HstPingServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)
void	init(javax.servlet.ServletConfig config)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

HstPingServlet

public HstPingServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest req,
                     javax.servlet.http.HttpServletResponse res)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException