Move UnixTime into gnmiext as time.go to align with per-type file naming

Author: felix-kaestner

internal/provider/cisco/nxos/system.go

@@ -5,10 +5,7 @@ package nxos
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
-	"strconv"
-	"time"
 
 	"google.golang.org/grpc"
 
@@ -69,36 +66,14 @@ func (*BootPOAP) XPath() string {
 	return "/System/boot-items/poap"
 }
 
-type BootTime UnixTime
+type BootTime gnmiext.UnixTime
 
 func (*BootTime) XPath() string {
 	return "System/procsys-items/bootTime"
 }
 
 func (t *BootTime) UnmarshalJSON(b []byte) error {
-	return (*UnixTime)(t).UnmarshalJSON(b)
-}
-
-// UnixTime is a wrapper around time.Time that marshals/unmarshals to/from a Unix timestamp in seconds.
-type UnixTime struct {
-	time.Time `json:"-"`
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (t *UnixTime) UnmarshalJSON(b []byte) error {
-	var unix int64
-	if err := json.Unmarshal(b, &unix); err != nil {
-		var str string
-		if err := json.Unmarshal(b, &str); err != nil {
-			return fmt.Errorf("failed to unmarshal UnixTime: %w", err)
-		}
-		unix, err = strconv.ParseInt(str, 10, 64)
-		if err != nil {
-			return fmt.Errorf("failed to parse UnixTime string: %w", err)
-		}
-	}
-	t.Time = time.Unix(unix, 0)
-	return nil
+	return (*gnmiext.UnixTime)(t).UnmarshalJSON(b)
 }
 
 func Reboot(ctx context.Context, conn *grpc.ClientConn) error {

internal/transport/gnmiext/time.go

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+package gnmiext
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"time"
+)
+
+// UnixTime is a wrapper around time.Time that marshals/unmarshals to/from a Unix timestamp in seconds.
+type UnixTime struct {
+	time.Time `json:"-"`
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (t *UnixTime) UnmarshalJSON(b []byte) error {
+	var unix int64
+	if err := json.Unmarshal(b, &unix); err != nil {
+		var str string
+		if err := json.Unmarshal(b, &str); err != nil {
+			return fmt.Errorf("failed to unmarshal UnixTime: %w", err)
+		}
+		unix, err = strconv.ParseInt(str, 10, 64)
+		if err != nil {
+			return fmt.Errorf("failed to parse UnixTime string: %w", err)
+		}
+	}
+	t.Time = time.Unix(unix, 0)
+	return nil
+}