vendor: github.com/moby/buildkit v0.12.1-0.20230717122532-faa0cc7da353

full diff:

- https://github.com/moby/buildkit/compare/20230620112432...v0.12.0
- https://github.com/moby/buildkit/compare/v0.12.0...faa0cc7da3536923d85b74b2bb2d13c12a6ecc99

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/moby/buildkit/sourcepolicy/mutate.go

@@ -0,0 +1,50 @@
+package sourcepolicy
+
+import (
+	"context"
+
+	"github.com/moby/buildkit/solver/pb"
+	spb "github.com/moby/buildkit/sourcepolicy/pb"
+	"github.com/moby/buildkit/util/bklog"
+	"github.com/pkg/errors"
+)
+
+// mutate is a MutateFn which converts the source operation to the identifier and attributes provided by the policy.
+// If there is no change, then the return value should be false and is not considered an error.
+func mutate(ctx context.Context, op *pb.SourceOp, rule *spb.Rule, selector *selectorCache, ref string) (bool, error) {
+	if rule.Updates == nil {
+		return false, errors.Errorf("missing destination for convert rule")
+	}
+
+	dest := rule.Updates.Identifier
+	if dest == "" {
+		dest = rule.Selector.Identifier
+	}
+	dest, err := selector.Format(ref, dest)
+	if err != nil {
+		return false, errors.Wrap(err, "error formatting destination")
+	}
+
+	bklog.G(ctx).Debugf("sourcepolicy: converting %s to %s, pattern: %s", ref, dest, rule.Updates.Identifier)
+
+	var mutated bool
+	if op.Identifier != dest && dest != "" {
+		mutated = true
+		op.Identifier = dest
+	}
+
+	if rule.Updates.Attrs != nil {
+		if op.Attrs == nil {
+			op.Attrs = make(map[string]string, len(rule.Updates.Attrs))
+		}
+		for k, v := range rule.Updates.Attrs {
+			if op.Attrs[k] != v {
+				bklog.G(ctx).Debugf("setting attr %s=%s", k, v)
+				op.Attrs[k] = v
+				mutated = true
+			}
+		}
+	}
+
+	return mutated, nil
+}