Fix record import field mapping & validation

* Allow undefined record ref validator fn
* Remove field mapping fallback if mapping is provided

compose/service/values/validator.go

@@ -3,15 +3,16 @@ package values
 import (
 	"context"
 	"fmt"
-	"github.com/cortezaproject/corteza-server/compose/types"
-	"github.com/cortezaproject/corteza-server/pkg/expr"
-	"github.com/cortezaproject/corteza-server/pkg/slice"
-	"github.com/cortezaproject/corteza-server/store"
 	"math/big"
 	"net/mail"
 	"net/url"
 	"strings"
 	"time"
+
+	"github.com/cortezaproject/corteza-server/compose/types"
+	"github.com/cortezaproject/corteza-server/pkg/expr"
+	"github.com/cortezaproject/corteza-server/pkg/slice"
+	"github.com/cortezaproject/corteza-server/store"
 )
 
 // Validator package provides tooling to validate
@@ -324,6 +325,10 @@ func (vldtr validator) vNumber(v *types.RecordValue, f *types.ModuleField, r *ty
 }
 
 func (vldtr validator) vRecord(ctx context.Context, s store.Storer, v *types.RecordValue, f *types.ModuleField, r *types.Record, m *types.Module) []types.RecordValueError {
+	if vldtr.recordRefCheckerFn == nil {
+		return nil
+	}
+
 	if ok, err := vldtr.recordRefCheckerFn(ctx, s, v, f, m); err != nil {
 		return e2s(makeInternalErr(f, err))
 	} else if !ok {

pkg/envoy/resource/compose_record_shaper.go

@@ -73,10 +73,14 @@ func (crt *composeRecordShaper) mapValues(ov map[string]string, fm MappingTplSet
 		mx[m.Cell] = m
 	}
 
-	for k, v := range ov {
-		if m, has := mx[k]; has {
-			nv[m.Field] = v
-		} else {
+	if len(mx) > 0 {
+		for k, v := range ov {
+			if m, has := mx[k]; has {
+				nv[m.Field] = v
+			}
+		}
+	} else {
+		for k, v := range ov {
 			nv[k] = v
 		}
 	}