#HystrixRequestContext

ServiceContextHolder.java

import com.netflix.hystrix.strategy.concurrency.HystrixRequestContext;
import com.netflix.hystrix.strategy.concurrency.HystrixRequestVariableDefault;

import java.util.Map;

/**
 * @author chenwenshun@gmail.com on 2023/5/16
 *
 * In order to pass request context to a FeignClient thread.
 */
public class ServiceContextHolder {

    private static final HystrixRequestVariableDefault<Map<String, String>> context = new HystrixRequestVariableDefault<>();

    static Map<String, String> getServiceContext() {
        initServiceContext();
        return context.get();
    }

    static void setServiceContext(Map<String, String> contexts) {
        initServiceContext();
        context.set(contexts);
    }

    static void destroy() {
        if (HystrixRequestContext.isCurrentThreadInitialized()) {
            HystrixRequestContext.getContextForCurrentThread().shutdown();
        }
    }

    private static void initServiceContext() {
        if (!HystrixRequestContext.isCurrentThreadInitialized()) {
            HystrixRequestContext.initializeContext();
        }
    }
}