com.networknt.metrics

Class MetricsHandler

java.lang.Object

com.networknt.metrics.MetricsHandler

All Implemented Interfaces:

LightHttpHandler, MiddlewareHandler, io.undertow.server.HttpHandler

public class MetricsHandler
extends Object
implements MiddlewareHandler

Metrics middleware handler can be plugged into the request/response chain to capture metrics information for all services. It is based on the dropwizard metric but customized to capture statistic info for a period of time and then reset all the data in order to capture the next period. The capture period can be configured in metrics.yml and normally should be 5 minutes, 10 minutes or 20 minutes depending on the load of the service.

Author:

Steve Hu

Field Summary

Fields

Modifier and Type	Field and Description
static MetricsConfig	config
static String	CONFIG_NAME

Fields inherited from interface com.networknt.handler.LightHttpHandler

AUDIT_ON_ERROR, AUDIT_STACK_TRACE, auditOnError, auditStackTrace, ERROR_NOT_DEFINED

Constructor Summary

Constructors

Constructor and Description
MetricsHandler()

Method Summary

Modifier and Type	Method and Description
io.undertow.server.HttpHandler	getNext()
void	handleRequest(io.undertow.server.HttpServerExchange exchange)
boolean	isEnabled()
void	register()
MiddlewareHandler	setNext(io.undertow.server.HttpHandler next)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.networknt.handler.LightHttpHandler

setExchangeStatus, setExchangeStatus

Field Detail

CONFIG_NAME

public static final String CONFIG_NAME

See Also:

Constant Field Values

config

public static MetricsConfig config

Constructor Detail

MetricsHandler

public MetricsHandler()

Method Detail

getNext

public io.undertow.server.HttpHandler getNext()

Specified by:

getNext in interface MiddlewareHandler

setNext

public MiddlewareHandler setNext(io.undertow.server.HttpHandler next)

Specified by:

setNext in interface MiddlewareHandler

handleRequest

public void handleRequest(io.undertow.server.HttpServerExchange exchange)
                   throws Exception

Specified by:

handleRequest in interface io.undertow.server.HttpHandler

Throws:

Exception

isEnabled

public boolean isEnabled()

Specified by:

isEnabled in interface MiddlewareHandler

register

public void register()

Specified by:

register in interface MiddlewareHandler