com.netflix.hystrix.contrib.metrics.eventstream

Class HystrixMetricsStreamServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class HystrixMetricsStreamServlet
extends javax.servlet.http.HttpServlet

Streams Hystrix metrics in text/event-stream format.

Install by:

1) Including hystrix-metrics-event-stream-*.jar in your classpath.

2) Adding the following to web.xml:

<servlet>
  <description></description>
  <display-name>HystrixMetricsStreamServlet</display-name>
  <servlet-name>HystrixMetricsStreamServlet</servlet-name>
  <servlet-class>com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet</servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>HystrixMetricsStreamServlet</servlet-name>
  <url-pattern>/hystrix.stream</url-pattern>
 </servlet-mapping>
  

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
HystrixMetricsStreamServlet()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy() Handle servlet being undeployed by gracefully releasing connections so poller threads stop.
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handle incoming GETs
void	init()
static void	shutdown() WebSphere won't shutdown a servlet until after a 60 second timeout if there is an instance of the servlet executing a request.

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

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

HystrixMetricsStreamServlet

public HystrixMetricsStreamServlet()

Method Detail

shutdown

public static void shutdown()

WebSphere won't shutdown a servlet until after a 60 second timeout if there is an instance of the servlet executing a request. Add this method to enable a hook to notify Hystrix to shutdown. You must invoke this method at shutdown, perhaps from some other serverlet's destroy() method.

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
         javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     java.io.IOException

Handle incoming GETs

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException

destroy

public void destroy()

Handle servlet being undeployed by gracefully releasing connections so poller threads stop.

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet