Hytrix consumer throws timed-out and no fallback available exception - spring

Question

I'm trying to test hytrix timeout fallback strategies for both consumer and provider services.
dependency versions:
spring-cloud-starter-openfeign = 2.2.1.RELEASE
spring-cloud-starter-netflix-hystrix = 2.2.1.RELEASE
I put a #HystrixCommand to a consumer's controller method whose timeout threshold is set to 3s, and bind the consumer's service class to the provider's app name.
In the provider's service class, I put a #HystrixCommand to one of its service method whose timeout threshold is 5s, which is longer than that of the consumer's.
I made use of the path variable to set the sleep time in the provider's service method, so I don't have to modify and restart everytime.
Here is the code:
consumer
application.yml
server:
port: 80
eureka:
client:
register-with-eureka: false
service-url:
defaultZone: http://eureka7001.com:7001/eureka/
feign:
hystrix:
enabled: true
controller class:
public class OrderHystirxController {
#Resource
private PaymentHystrixService paymentHystrixService;
#GetMapping("/consumer/payment/hystrix/ok/{id}")
public String paymentInfo_OK(#PathVariable("id") Integer id) {
return paymentHystrixService.paymentInfo_OK(id);
}
#GetMapping("/consumer/payment/hystrix/timeout/{id}")
#HystrixCommand(fallbackMethod = "paymentTimeOutFallbackMethod", commandProperties = {
#HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
})
public String paymentInfo_TimeOut(#PathVariable("id") Integer id) {
String result = paymentHystrixService.paymentInfo_TimeOut(id);
return result;
}
// fallback method
public String paymentTimeOutFallbackMethod(#PathVariable("id") Integer id) {
return "Client Timeout";
}
service interface:
#Component
#FeignClient(value = "CLOUD-PROVIDER-HYSTRIX-PAYMENT")
public interface PaymentHystrixService
{
#GetMapping("/payment/hystrix/ok/{id}")
String paymentInfo_OK(#PathVariable("id") Integer id);
#GetMapping("/payment/hystrix/timeout/{id}")
String paymentInfo_TimeOut(#PathVariable("id") Integer id);
}
provider
application.yml
server:
port: 8001
spring:
application:
name: cloud-provider-hystrix-payment
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://eureka7001.com:7001/eureka
controller
#RestController
public class PaymentController
{
#Autowired
private PaymentService paymentService;
#GetMapping("/payment/hystrix/ok/{id}")
public String paymentInfo_OK(#PathVariable("id") Integer id)
{
String result = paymentService.paymentInfo_OK(id);
System.out.println("****result: "+result);
return result;
}
#GetMapping("/payment/hystrix/timeout/{id}")
public String paymentInfo_TimeOut(#PathVariable("id") Integer id) throws InterruptedException
{
String result = paymentService.paymentInfo_TimeOut(id);
System.out.println("****result: "+result);
return result;
}
}
service
#Service
public class PaymentService {
public String paymentInfo_OK(Integer id) {
return "线程池:" + Thread.currentThread().getName() + " paymentInfo_OK,id: " + id;
}
#HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
#HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
})
public String paymentInfo_TimeOut(Integer id) {
long outTime = (long) id;
try {
TimeUnit.SECONDS.sleep(outTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "线程池:" + Thread.currentThread().getName() + " paymentInfo_TimeOut,id: " + id + " 耗时: " + outTime;
}
// fallback method
public String paymentInfo_TimeOutHandler(Integer id) {
return "Server Timeout：" + "\t当前线程池名字" + Thread.currentThread().getName();
}
}
When accessed directly via provider's urls, everything went as expected.
But when accessed via consumer's url "/consumer/payment/hystrix/timeout/{id}", it didn't go as expected.
I thought it should be like:
id(timeout) set to below 3, no timeout occurs
id(timeout) set to over 3, consumer timeout occurs
But what happened is:
id(timeout) set to 0, no timeout occurs
id(timeout) set to 1 or above, consumer timeout occurs
If I try-catch the paymentInfo_TimeOut method of the consumer, it prints:
com.netflix.hystrix.exception.HystrixRuntimeException: PaymentHystrixService#paymentInfo_TimeOut(Integer) timed-out and no fallback available.
Did I configure hystrix wrong?
Help needed and thanks in advance.