feat(stacks): support compose v2.0 stack (#1963)

api/http/response/response.go

@@ -0,0 +1,32 @@
+package response
+
+import (
+	"encoding/json"
+	"net/http"
+
+	httperror "github.com/portainer/portainer/http/error"
+)
+
+// JSON encodes data to rw in JSON format. Returns a pointer to a
+// HandlerError if encoding fails.
+func JSON(rw http.ResponseWriter, data interface{}) *httperror.HandlerError {
+	rw.Header().Set("Content-Type", "application/json")
+	err := json.NewEncoder(rw).Encode(data)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to write JSON response", err}
+	}
+	return nil
+}
+
+// Empty merely sets the response code to NoContent (204).
+func Empty(rw http.ResponseWriter) *httperror.HandlerError {
+	rw.WriteHeader(http.StatusNoContent)
+	return nil
+}
+
+// Bytes write data into rw. It also allows to set the Content-Type header.
+func Bytes(rw http.ResponseWriter, data []byte, contentType string) *httperror.HandlerError {
+	rw.Header().Set("Content-Type", contentType)
+	rw.Write(data)
+	return nil
+}