api handlers to register and unregister host from turn,added dockerfile

turnserver/internal/errors/api_errors.go

@@ -0,0 +1,48 @@
+package errors
+
+import (
+	"net/http"
+
+	"github.com/gravitl/netmaker/turnserver/internal/models"
+)
+
+type ApiRespErr string
+
+const (
+	Internal     ApiRespErr = "internal"
+	BadRequest   ApiRespErr = "badrequest"
+	NotFound     ApiRespErr = "notfound"
+	UnAuthorized ApiRespErr = "unauthorized"
+	Forbidden    ApiRespErr = "forbidden"
+	Unavailable  ApiRespErr = "unavailable"
+)
+
+// FormatError - formats into api error resp
+func FormatError(err error, errType ApiRespErr) models.ErrorResponse {
+
+	var status = http.StatusInternalServerError
+	switch errType {
+	case Internal:
+		status = http.StatusInternalServerError
+	case BadRequest:
+		status = http.StatusBadRequest
+	case NotFound:
+		status = http.StatusNotFound
+	case UnAuthorized:
+		status = http.StatusUnauthorized
+	case Forbidden:
+		status = http.StatusForbidden
+	case Unavailable:
+		status = http.StatusServiceUnavailable
+	default:
+		status = http.StatusInternalServerError
+	}
+
+	var response = models.ErrorResponse{
+		Code: status,
+	}
+	if err != nil {
+		response.Message = err.Error()
+	}
+	return response
+}