add proto/time/duration slice loggers (#842)

logger/slice.go

@@ -15,16 +15,33 @@
 package logger
 
 import (
+	"time"
+
 	"go.uber.org/multierr"
 	"go.uber.org/zap/zapcore"
+	"google.golang.org/protobuf/proto"
 )
 
-func ObjectSlice[T zapcore.ObjectMarshaler](s []T) zapcore.ArrayMarshaler {
-	return objectSlice[T](s)
+type protoSlice[T proto.Message] []T
+
+func ProtoSlice[T proto.Message](s []T) zapcore.ArrayMarshaler {
+	return protoSlice[T](s)
+}
+
+func (s protoSlice[T]) MarshalLogArray(e zapcore.ArrayEncoder) error {
+	var err error
+	for _, v := range s {
+		err = multierr.Append(err, e.AppendObject(Proto(v)))
+	}
+	return err
 }
 
 type objectSlice[T zapcore.ObjectMarshaler] []T
 
+func ObjectSlice[T zapcore.ObjectMarshaler](s []T) zapcore.ArrayMarshaler {
+	return objectSlice[T](s)
+}
+
 func (s objectSlice[T]) MarshalLogArray(e zapcore.ArrayEncoder) error {
 	var err error
 	for _, v := range s {
@@ -33,6 +50,32 @@ func (s objectSlice[T]) MarshalLogArray(e zapcore.ArrayEncoder) error {
 	return err
 }
 
+type timeSlice []time.Time
+
+func TimeSlice(s []time.Time) zapcore.ArrayMarshaler {
+	return timeSlice(s)
+}
+
+func (s timeSlice) MarshalLogArray(e zapcore.ArrayEncoder) error {
+	for _, v := range s {
+		e.AppendTime(v)
+	}
+	return nil
+}
+
+type durationSlice []time.Duration
+
+func DurationSlice(s []time.Duration) zapcore.ArrayMarshaler {
+	return durationSlice(s)
+}
+
+func (s durationSlice) MarshalLogArray(e zapcore.ArrayEncoder) error {
+	for _, v := range s {
+		e.AppendDuration(v)
+	}
+	return nil
+}
+
 type boolSlice[T ~bool] []T
 
 func BoolSlice[T ~bool](s []T) zapcore.ArrayMarshaler {