Add protobuf helper methods to base/go

base/go/pb.go

@@ -0,0 +1,27 @@
+// Copyright 2023 Peridot Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package base
+
+type internalGetPb[T any] interface {
+	ToPB() T
+}
+
+func SliceToPB[T any, U internalGetPb[T]](slice []U) []T {
+	result := make([]T, len(slice))
+	for i, v := range slice {
+		result[i] = v.ToPB()
+	}
+	return result
+}

base/go/wrapper_helpers.go

@@ -0,0 +1,27 @@
+// Copyright 2023 Peridot Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package base
+
+import (
+	"database/sql"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+func SqlNullTime(t sql.NullTime) *timestamppb.Timestamp {
+	if !t.Valid {
+		return nil
+	}
+	return timestamppb.New(t.Time)
+}