com.hotels.styx.admin.handlers

Class JsonHandler<E>

java.lang.Object

com.hotels.styx.common.http.handler.BaseHttpHandler

com.hotels.styx.admin.handlers.JsonHandler<E>

Type Parameters:

E - type of object to map into JSON

All Implemented Interfaces:

WebServiceHandler

Direct Known Subclasses:

JVMMetricsHandler

public class JsonHandler<E>
extends BaseHttpHandler

Handler for returning JSON. If a cache expiration value is present, the JSON is not regenerated on every call, unless the specified duration has passed since the last generation.

Constructor Summary

Constructors

Constructor and Description
JsonHandler(E data, Optional<Duration> cacheExpiration, com.fasterxml.jackson.databind.Module... modules) Constructs an instance.
JsonHandler(Supplier<E> dataSupplier, Optional<Duration> cacheExpiration, com.fasterxml.jackson.databind.Module... modules) Constructs an instance.

Method Summary

Modifier and Type	Method and Description
protected HttpResponse	doHandle(HttpRequest request, HttpInterceptor.Context context)

Methods inherited from class com.hotels.styx.common.http.handler.BaseHttpHandler

handle

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonHandler

public JsonHandler(E data,
                   Optional<Duration> cacheExpiration,
                   com.fasterxml.jackson.databind.Module... modules)

Constructs an instance.

Parameters:

data - an object to convert to JSON upon each update

cacheExpiration - time between updates

modules - modules for object mapper

JsonHandler

public JsonHandler(Supplier<E> dataSupplier,
                   Optional<Duration> cacheExpiration,
                   com.fasterxml.jackson.databind.Module... modules)

Constructs an instance.

Parameters:

dataSupplier - a supplier that provides an object to convert to JSON upon each update

cacheExpiration - time between updates

modules - modules for object mapper

Method Detail

doHandle

protected HttpResponse doHandle(HttpRequest request,
                                HttpInterceptor.Context context)

Specified by:

doHandle in class BaseHttpHandler