Exemple #1
0
func (w *wrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
	if !w.whitelist[req.Service()] {
		return errors.Forbidden("go.micro.rpc", "forbidden")
	}

	return w.Client.Call(ctx, req, rsp, opts...)
}
Exemple #2
0
func (s *Hotel) Rates(ctx context.Context, req *hotel.Request, rsp *hotel.Response) error {
	// tracing
	tr := trace.New("api.v1", "Hotel.Rates")
	defer tr.Finish()

	// context
	ctx = trace.NewContext(ctx, tr)

	md, ok := metadata.FromContext(ctx)
	if !ok {
		md = metadata.Metadata{}
	}

	// add a unique request id to context
	if traceID, err := uuid.NewV4(); err == nil {
		// make copy
		tmd := metadata.Metadata{}
		for k, v := range md {
			tmd[k] = v
		}

		tmd["traceID"] = traceID.String()
		tmd["fromName"] = "api.v1"
		ctx = metadata.NewContext(ctx, tmd)
	}

	// token from request headers
	token, err := getToken(md)
	if err != nil {
		return merr.Forbidden("api.hotel.rates", err.Error())
	}

	// verify token w/ auth service
	authClient := auth.NewAuthClient("go.micro.srv.auth", s.Client)
	if _, err = authClient.VerifyToken(ctx, &auth.Request{AuthToken: token}); err != nil {
		return merr.Unauthorized("api.hotel.rates", "Unauthorized")
	}

	// checkin and checkout date query params
	inDate, outDate := req.InDate, req.OutDate
	if inDate == "" || outDate == "" {
		return merr.BadRequest("api.hotel.rates", "Please specify inDate/outDate params")
	}

	// finds nearby hotels
	// TODO(hw): use lat/lon from request params
	geoClient := geo.NewGeoClient("go.micro.srv.geo", s.Client)
	nearby, err := geoClient.Nearby(ctx, &geo.Request{
		Lat: 51.502973,
		Lon: -0.114723,
	})
	if err != nil {
		return merr.InternalServerError("api.hotel.rates", err.Error())
	}

	// make reqeusts for profiles and rates
	profileCh := getHotelProfiles(s.Client, ctx, nearby.HotelIds)
	rateCh := getRatePlans(s.Client, ctx, nearby.HotelIds, inDate, outDate)

	// wait on profiles reply
	profileReply := <-profileCh
	if err := profileReply.err; err != nil {
		return merr.InternalServerError("api.hotel.rates", err.Error())
	}

	// wait on rates reply
	rateReply := <-rateCh
	if err := rateReply.err; err != nil {
		return merr.InternalServerError("api.hotel.rates", err.Error())
	}

	rsp.Hotels = profileReply.hotels
	rsp.RatePlans = rateReply.ratePlans
	return nil
}