API: List ARNs (#19)

* API: List ARNs

* Add Tests

restapi/admin_info.go

@@ -19,6 +19,7 @@ package restapi
 import (
 	"context"
 	"log"
+	"time"
 
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/swag"
@@ -28,7 +29,7 @@ import (
 )
 
 func registerAdminInfoHandlers(api *operations.McsAPI) {
-	// session check
+	// return usage stats
 	api.AdminAPIAdminInfoHandler = admin_api.AdminInfoHandlerFunc(func(params admin_api.AdminInfoParams, principal *models.Principal) middleware.Responder {
 		infoResp, err := getAdminInfoResponse()
 		if err != nil {
@@ -71,7 +72,7 @@ func getAdminInfoResponse() (*models.AdminInfoResponse, error) {
 	// defining the client to be used
 	adminClient := adminClient{client: mAdmin}
 	// 20 seconds timeout
-	ctx, cancel := context.WithTimeout(context.Background(), 20)
+	ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
 	defer cancel()
 	// serialize output
 	usage, err := getAdminInfo(ctx, adminClient)