fix(traefik): parse JSON response from sablier

plugins/traefik/pkg/strategy/strategy.go

@@ -1,10 +1,9 @@
 package strategy
 
 import (
+	"encoding/json"
 	"errors"
-	"io/ioutil"
 	"net/http"
-	"strings"
 	"time"
 )
 
@@ -13,6 +12,11 @@ var netClient = &http.Client{
 	Timeout: time.Second * 2,
 }
 
+type SablierResponse struct {
+	State string `json:"state"`
+	Error string `json:"error"`
+}
+
 type Strategy interface {
 	ServeHTTP(rw http.ResponseWriter, req *http.Request)
 }
@@ -25,15 +29,16 @@ func getServiceStatus(request string) (string, error) {
 		return "error", err
 	}
 
-	defer resp.Body.Close()
-	body, err := ioutil.ReadAll(resp.Body)
+	decoder := json.NewDecoder(resp.Body)
+	var response SablierResponse
+	err = decoder.Decode(&response)
 	if err != nil {
-		return "parsing error", err
+		return "error from ondemand service", err
 	}
 
 	if resp.StatusCode >= 400 {
-		return "error from ondemand service", errors.New(string(body))
+		return "error from ondemand service", errors.New(response.Error)
 	}
 
-	return strings.TrimSuffix(string(body), "\n"), nil
+	return response.State, nil
 }