Stage uploads before accepting HTTP runs

internal/ingest/archive.go

@@ -138,6 +138,11 @@ func validateRunID(value string) error {
 	return nil
 }
 
+func ValidateContentType(contentType string) error {
+	_, err := archiveFormat(contentType)
+	return err
+}
+
 type archiveKind int
 
 const (

internal/ingest/archive_test.go

@@ -47,6 +47,25 @@ func TestStageArchiveRejectsUnsupportedContentType(t *testing.T) {
 	}
 }
 
+func TestValidateContentType(t *testing.T) {
+	for _, contentType := range []string{
+		ContentTypeTar,
+		ContentTypeGzip,
+		ContentTypeXGzip,
+		ContentTypeGzip + "; charset=binary",
+	} {
+		t.Run(contentType, func(t *testing.T) {
+			if err := ValidateContentType(contentType); err != nil {
+				t.Fatalf("ValidateContentType() error = %v", err)
+			}
+		})
+	}
+
+	if err := ValidateContentType("application/zip"); !errors.Is(err, ErrUnsupportedContentType) {
+		t.Fatalf("ValidateContentType() error = %v, want ErrUnsupportedContentType", err)
+	}
+}
+
 func TestStageArchiveEnforcesMaxUploadSize(t *testing.T) {
 	archive := validArchive(t, false)
 	err := stageArchiveError(t, archive, ContentTypeTar, func(opts *StageOptions) {