Custom hystrix command/group key in feign clients

FeignHystrixKeyConfiguration.java

package com.scienjus.feign;

import com.netflix.hystrix.HystrixCommand;
import com.netflix.hystrix.HystrixCommandGroupKey;
import feign.Feign;
import feign.hystrix.SetterFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import static com.netflix.hystrix.HystrixCommandKey.Factory.asKey;

@Configuration
public class FeignHystrixKeyConfiguration {

    @Bean
    public SetterFactory setterFactory() {
        return (target, method) -> {
            HystrixGroupKey groupKeyAnno = method.getAnnotation(HystrixGroupKey.class);
            if (groupKeyAnno == null) {
                groupKeyAnno = method.getDeclaringClass().getAnnotation(HystrixGroupKey.class);
            }
            HystrixCommandKey commandKeyAnno = method.getAnnotation(HystrixCommandKey.class);

            String groupKey = groupKeyAnno != null ? groupKeyAnno.value() : target.name();
            String commandKey = commandKeyAnno != null ? commandKeyAnno.value() : Feign.configKey(target.type(), method);
            return HystrixCommand.Setter
                    .withGroupKey(HystrixCommandGroupKey.Factory.asKey(groupKey))
                    .andCommandKey(asKey(commandKey));
        };
    }

}

HystrixCommandKey.java

package com.scienjus.feign;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@Documented
public @interface HystrixCommandKey {

    String value();
}

HystrixGroupKey.java

package com.scienjus.feign;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.METHOD})
@Documented
public @interface HystrixGroupKey {

    String value();
}