Class HealthCheckServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.codahale.metrics.servlets.HealthCheckServlet

All Implemented Interfaces:

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

public class HealthCheckServlet
extends javax.servlet.http.HttpServlet

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HealthCheckServlet.ContextListener

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	CONTENT_TYPE
private ExecutorService	executorService
static final String	HEALTH_CHECK_EXECUTOR
static final String	HEALTH_CHECK_REGISTRY
private com.fasterxml.jackson.databind.ObjectMapper	mapper
private HealthCheckRegistry	registry
private static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
HealthCheckServlet()
HealthCheckServlet(HealthCheckRegistry registry)

Method Summary

Modifier and Type	Method	Description
protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
private com.fasterxml.jackson.databind.ObjectWriter	getWriter(javax.servlet.http.HttpServletRequest request)
void	init(javax.servlet.ServletConfig config)
private static boolean	isAllHealthy(Map<String, HealthCheck.Result> results)
private SortedMap<String, HealthCheck.Result>	runHealthChecks()

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 Object

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

Field Details

HEALTH_CHECK_REGISTRY

public static final String HEALTH_CHECK_REGISTRY

HEALTH_CHECK_EXECUTOR

public static final String HEALTH_CHECK_EXECUTOR

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

CONTENT_TYPE

private static final String CONTENT_TYPE

See Also:

• Constant Field Values

registry

private transient HealthCheckRegistry registry

executorService

private transient ExecutorService executorService

mapper

private transient com.fasterxml.jackson.databind.ObjectMapper mapper

Constructor Details

HealthCheckServlet

public HealthCheckServlet()

HealthCheckServlet

public HealthCheckServlet(HealthCheckRegistry registry)

Method Details

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 resp)
              throws javax.servlet.ServletException,
IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

getWriter

private com.fasterxml.jackson.databind.ObjectWriter getWriter(javax.servlet.http.HttpServletRequest request)

runHealthChecks

private SortedMap<String, HealthCheck.Result> runHealthChecks()

isAllHealthy

private static boolean isAllHealthy(Map<String, HealthCheck.Result> results)