org.wisdom.monitor.extensions.dashboard

Class HttpMetricFilter

java.lang.Object

org.wisdom.monitor.extensions.dashboard.HttpMetricFilter

All Implemented Interfaces:

org.wisdom.api.http.Status, org.wisdom.api.interception.Filter

public class HttpMetricFilter
extends Object
implements org.wisdom.api.interception.Filter, org.wisdom.api.http.Status

A class exposing a HTTP Request filter to compute HTTP metrics.

Field Summary

Fields

Modifier and Type	Field and Description
private com.codahale.metrics.Counter	activeRequests
private org.osgi.framework.BundleContext	context
private Pattern	interceptionPattern
private Integer	interceptionPriority
private ConcurrentMap<Integer,com.codahale.metrics.Meter>	metersByStatusCode
private com.codahale.metrics.Meter	otherMeter
private org.osgi.framework.ServiceRegistration<org.wisdom.api.interception.Filter>	reg
private com.codahale.metrics.Timer	requestTimer

Fields inherited from interface org.wisdom.api.http.Status

ACCEPTED, BAD_GATEWAY, BAD_REQUEST, CONFLICT, CONTINUE, CREATED, EXPECTATION_FAILED, FORBIDDEN, FOUND, GATEWAY_TIMEOUT, GONE, HTTP_VERSION_NOT_SUPPORTED, INTERNAL_SERVER_ERROR, LENGTH_REQUIRED, METHOD_NOT_ALLOWED, MOVED_PERMANENTLY, MULTIPLE_CHOICES, NO_CONTENT, NON_AUTHORITATIVE_INFORMATION, NOT_ACCEPTABLE, NOT_FOUND, NOT_IMPLEMENTED, NOT_MODIFIED, OK, PARTIAL_CONTENT, PAYMENT_REQUIRED, PRECONDITION_FAILED, PROXY_AUTHENTICATION_REQUIRED, REQUEST_ENTITY_TOO_LARGE, REQUEST_TIMEOUT, REQUEST_URI_TOO_LONG, REQUESTED_RANGE_NOT_SATISFIABLE, RESET_CONTENT, SEE_OTHER, SERVICE_UNAVAILABLE, SWITCHING_PROTOCOLS, TEMPORARY_REDIRECT, UNAUTHORIZED, UNSUPPORTED_MEDIA_TYPE, USE_PROXY

Constructor Summary

Constructors

Constructor and Description
HttpMetricFilter(org.osgi.framework.BundleContext context, org.wisdom.api.configuration.ApplicationConfiguration configuration, com.codahale.metrics.MetricRegistry registry) Creates a new instance of the filter.

Method Summary

Modifier and Type	Method and Description
org.wisdom.api.http.Result	call(org.wisdom.api.router.Route route, org.wisdom.api.interception.RequestContext context) The interception method.
private static Map<Integer,String>	createMeterNamesByStatusCode()
private void	markMeterForStatusCode(org.wisdom.api.http.Result result)
int	priority() Gets the filter priority, determining the position of the filter in the filter chain.
void	start() Starts the filter.
void	stop() Stops the filter.
Pattern	uri() Gets the Regex Pattern used to determine whether the route is handled by the filter or not.

Methods inherited from class java.lang.Object

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

Field Detail

context

private final org.osgi.framework.BundleContext context

interceptionPattern

private final Pattern interceptionPattern

interceptionPriority

private final Integer interceptionPriority

reg

private org.osgi.framework.ServiceRegistration<org.wisdom.api.interception.Filter> reg

metersByStatusCode

private ConcurrentMap<Integer,com.codahale.metrics.Meter> metersByStatusCode

otherMeter

private com.codahale.metrics.Meter otherMeter

activeRequests

private com.codahale.metrics.Counter activeRequests

requestTimer

private com.codahale.metrics.Timer requestTimer

Constructor Detail

HttpMetricFilter

public HttpMetricFilter(org.osgi.framework.BundleContext context,
                        org.wisdom.api.configuration.ApplicationConfiguration configuration,
                        com.codahale.metrics.MetricRegistry registry)

Creates a new instance of the filter.

Parameters:

context - the bundle context

configuration - the application configuration

registry - the metric registry

Method Detail

createMeterNamesByStatusCode

private static Map<Integer,String> createMeterNamesByStatusCode()

start

public void start()

Starts the filter.

stop

public void stop()

Stops the filter.

call

public org.wisdom.api.http.Result call(org.wisdom.api.router.Route route,
                                       org.wisdom.api.interception.RequestContext context)
                                throws Exception

The interception method. The method should call RequestContext.proceed() to call the next interceptor. Without this call it cuts the chain.

Specified by:

call in interface org.wisdom.api.interception.Filter

Parameters:

route - the route

context - the filter context

Returns:

the result

Throws:

Exception - if anything bad happen

markMeterForStatusCode

private void markMeterForStatusCode(org.wisdom.api.http.Result result)

uri

public Pattern uri()

Gets the Regex Pattern used to determine whether the route is handled by the filter or not. Notice that the router are caching these patterns and so cannot changed.

Specified by:

uri in interface org.wisdom.api.interception.Filter

priority

public int priority()

Gets the filter priority, determining the position of the filter in the filter chain. Filter with a high priority are called first. Notice that the router are caching these priorities and so cannot changed.

It is heavily recommended to allow configuring the priority from the Application Configuration.

Specified by:

priority in interface org.wisdom.api.interception.Filter

Returns:

the priority