[CAMEL-11023] Hystrix Starter : add an option to configure additional configuration via spring-boot properties

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.19.0
• Component/s: camel-hystrix, camel-spring-boot-starters
• Estimated Complexity: Unknown
• Assignee: Luca Burgazzoli
• Reporter: Luca Burgazzoli
• Created: 16/Mar/17 10:40
• Updated: 16/Mar/17 10:43
• Resolved: 16/Mar/17 10:43

Description

In addition to configre the default hystrix configuration it would be nice to have a way to configre additional configurations in spring-boot appliction.properties, like:

// default
camel.hystrix.group-key=global-group

// named conf conf-1
camel.hystrix.configurations.conf-1.group-key=conf-1-group

// named conf conf-1
camel.hystrix.configurations.conf-2.group-key=conf-2-group

Then the configrations can be referenced in camel routes:

public class HystrixMultiConfiguration {
    @Bean
    public RouteBuilder routeBuilder() {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start-1")
                    .routeId("hystrix-route-1")
                    .hystrix()
                        .hystrixConfiguration("conf-1")
                        .to("direct:foo")
                    .onFallback()
                        .transform().constant("Fallback message")
                    .end();
                from("direct:start-2")
                    .routeId("hystrix-route-2")
                    .hystrix()
                        .hystrixConfiguration("conf-2")
                        .to("direct:foo")
                    .onFallback()
                        .transform().constant("Fallback message")
                    .end();

                from("direct:foo")
                    .transform().body(b -> "Bye World");
            }
        };
    }
}

This would also have to create additional "templates" one can inherit and further customize in routes.