Change the hystrix configuration dynamically (per instance)

[Ahmed MOUTAIM]

Hello,

I'm working on a large integration project based on the apache camel 2.22.0
and tomcat 7 as web container.
I would like to set up a route to handle HTTP dynamic routing (32
endpoints) with Hystrix EIP as a resiliency solution. However, I
encountered a problem with updating the hystrix settings in the runtime,
when i wanted to override the *GroupKey*/*ThreadPoolKey *parameters
depending on the instance.

Note that when the hystrix circuit breaker is open, it remains open
regardless of the instance (endpoint) that is called.

So, is there a way to update hystrix configuration at runtime in a single
camel route ? I'm using Spring XML DSL to create a route and referring to a
hystrix configuration.

For now the only solution I have is to do one hystrix route per endpoint
but that makes a lot of routes that do the same thing.

Below my test example

Thank you for your help!
====================================================
<beans:bean id="hystrixConfiguration"
class="org.apache.camel.model.HystrixConfigurationDefinition">
<beans:property name="circuitBreakerSleepWindowInMilliseconds"
value="10000" />
<beans:property name="circuitBreakerRequestVolumeThreshold" value="3" />
<beans:property name="circuitBreakerErrorThresholdPercentage" value="50" />
<beans:property name="groupKey" value="myGroup" />
</beans:bean>

<route id="timerClient" streamCache="true">
<from uri="timer:trigger?period=1000&amp;fixedRate=true&amp;repeatCount=50"
/>
<setHeader headerName="endpointsToBeTriggered">
<method beanType="camel.hystrix.MessageRouter"
method="getEndpointsToRouteMessageTo" />
</setHeader>
<to uri="direct:toHystrix" />
</route>

<route id="toHystrix">
<from uri="direct:toHystrix" />
<hystrix id="toHystrixEip" hystrixConfigurationRef="hystrixConfiguration">
<toD uri="${headers.endpointsToBeTriggered}" />
<onFallback>
<transform>
<simple>Hystrix Fallback message</simple>
</transform>
</onFallback>
</hystrix>
</route>