我有两个api要调用。他们都用Hystrix Observable包裹着:
这里有一个例如:
@HystrixCommand()
public Observable<String> getAvailableFlightBookings() {
return new ObservableResult<String>() {
@Override
public String invoke() {
URI uri = registryService.getServiceUrl("flight-booking-service", "http://localhost:8081/flight-booking-service");
String url = uri.toString() + "/flights/list";
ResponseEntity<String> resultStr = restTemplate.getForEntity(url, String.class);
return resultStr.getBody();
}
};
}
我有以下代码,我正在努力完成:
public DeferredResult<FlightDetails> getAllFlightDetails() {
//Calling previous defined functions
Observable<String> availableFlightBookings=flightBookingIntegrationService.getAvailableFlightBookings();
Observable<String> couponId=couponIntegrationService.getCoupon();
Observable<String> details = Observable.zip(
..?
}
我不确定如何调用以下API:
flightBookingIntegrationService.getAvailableFlightBookings();
couponIntegrationService.getCoupon();
并使用Observable.zip填充最终结果对象(FlightDetails)
FlightDetails:
public class FlightDetails {
String couponId;
String availableFlightList;
..
}
谢谢你, 射线。
答案 0 :(得分:1)
我不熟悉Hystrix,但是压缩两个observable不应该与纯RxJava不同。
Observable.zip(availableFlightBookings, couponId, new Func2<String, String, FlightDetails>() {
@Override
public FlightDetails call(String availableFlights, String coupon) {
return new FlightDetails(availableFlights, coupon);
}
}).subscribe();
答案 1 :(得分:1)
首先让你的Hystrix命令类为@Component
,因为你正在使用Spring,然后只需Autowire
它就进入你的控制器并调用
使用lambdas,看起来像这样:
public DeferredResult<FlightDetails> getAllFlightDetails() {
Observable<String> availableFlightBookings=flightBookingIntegrationService.getAvailableFlightBookings();
Observable<String> couponId=couponIntegrationService.getCoupon();
//Create a new DeferredResult
DeferredResult<FlightDetails> result = new DeferredResult();
Observable.zip(availableFlightBookings,couponId, (avaliable, coupon) -> {
// do some logic here or just..
return new FlightDetails(avaliable,coupon);
}).subscribe(result::setResult,result::setErrorResult);
return result;
}