com.netflix.hystrix.contrib.sample.stream

Class HystrixSampleSseServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.netflix.hystrix.contrib.sample.stream.HystrixSampleSseServlet

All Implemented Interfaces:

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

Direct Known Subclasses:

HystrixConfigSseServlet, HystrixMetricsStreamServlet, HystrixRequestEventsSseServlet, HystrixUtilizationSseServlet

public abstract class HystrixSampleSseServlet
extends javax.servlet.http.HttpServlet

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	DEFAULT_PAUSE_POLLER_THREAD_DELAY_IN_MS
protected rx.Observable<java.lang.String>	sampleStream

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HystrixSampleSseServlet(rx.Observable<java.lang.String> sampleStream)
protected	HystrixSampleSseServlet(rx.Observable<java.lang.String> sampleStream, int pausePollerThreadDelayInMs)

Method Summary

Modifier and Type	Method and Description
protected abstract void	decrementCurrentConcurrentConnections()
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
protected abstract int	getMaxNumberConcurrentConnectionsAllowed()
protected abstract int	getNumberCurrentConnections()
protected abstract int	incrementAndGetCurrentConcurrentConnections()
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

Field Detail

sampleStream

protected final rx.Observable<java.lang.String> sampleStream

DEFAULT_PAUSE_POLLER_THREAD_DELAY_IN_MS

protected static final int DEFAULT_PAUSE_POLLER_THREAD_DELAY_IN_MS

See Also:

Constant Field Values

Constructor Detail

HystrixSampleSseServlet

protected HystrixSampleSseServlet(rx.Observable<java.lang.String> sampleStream)

HystrixSampleSseServlet

protected HystrixSampleSseServlet(rx.Observable<java.lang.String> sampleStream,
                                  int pausePollerThreadDelayInMs)

Method Detail

getMaxNumberConcurrentConnectionsAllowed

protected abstract int getMaxNumberConcurrentConnectionsAllowed()

getNumberCurrentConnections

protected abstract int getNumberCurrentConnections()

incrementAndGetCurrentConcurrentConnections

protected abstract int incrementAndGetCurrentConcurrentConnections()

decrementCurrentConcurrentConnections

protected abstract void decrementCurrentConcurrentConnections()

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

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 servlet's destroy() method.

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

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