feat(system): path to upgrade standalone to BE [EE-4071] (#8095)

api/http/handler/system/system_upgrade.go

@@ -0,0 +1,54 @@
+package system
+
+import (
+	"net/http"
+	"regexp"
+
+	"github.com/pkg/errors"
+	httperror "github.com/portainer/libhttp/error"
+	"github.com/portainer/libhttp/request"
+	"github.com/portainer/libhttp/response"
+	"github.com/rs/zerolog/log"
+)
+
+type systemUpgradePayload struct {
+	License string
+}
+
+var re = regexp.MustCompile(`^\d-.+`)
+
+func (payload *systemUpgradePayload) Validate(r *http.Request) error {
+	if payload.License == "" {
+		return errors.New("license is missing")
+	}
+
+	if !re.MatchString(payload.License) {
+		return errors.New("license is invalid")
+	}
+
+	return nil
+}
+
+// @id systemUpgrade
+// @summary Upgrade Portainer to BE
+// @description Upgrade Portainer to BE
+// @description **Access policy**: administrator
+// @tags system
+// @produce json
+// @success 200 {object} status "Success"
+// @router /system/upgrade [post]
+func (handler *Handler) systemUpgrade(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
+	payload, err := request.GetPayload[systemUpgradePayload](r)
+	if err != nil {
+		return httperror.BadRequest("Invalid request payload", err)
+	}
+
+	go func() {
+		err = handler.upgradeService.Upgrade(payload.License)
+		if err != nil {
+			log.Error().Err(err).Msg("Failed to upgrade Portainer")
+		}
+	}()
+
+	return response.Empty(w)
+}