Go: Implement LastSave command

go/api/glide_cluster_client.go

@@ -366,3 +366,46 @@ func (client *GlideClusterClient) EchoWithOptions(echoOptions options.ClusterEch
 	}
 	return createClusterSingleValue[string](data), nil
 }
+
+// Returns UNIX TIME of the last DB save timestamp or startup timestamp if no save was made since then.
+// The command will be routed to a random node.
+//
+// Parameters:
+//
+//	route - Specifies the routing configuration for the command. The client will route the
+//	        command to the nodes defined by route.
+//
+// Return value:
+//
+//	UNIX TIME of the last DB save executed with success.
+//
+// Example:
+//
+//	route := api.SimpleNodeRoute(api.RandomRoute)
+//	options := options.NewDBOptionsBuilder().SetRoute(route)
+//	result, err := client.LastSaveWithOptions(route)
+//	if err != nil {
+//	  // handle error
+//	}
+//	fmt.Println(result) // Output: 1123456
+//
+// [valkey.io]: https://valkey.io/commands/lastsave/
+func (client *GlideClusterClient) LastSaveWithOptions(opts options.RouteOption) (ClusterValue[int64], error) {
+	response, err := client.executeCommandWithRoute(C.LastSave, []string{}, opts.Route)
+	if err != nil {
+		return createEmptyClusterValue[int64](), err
+	}
+	if opts.Route != nil &&
+		(opts.Route).IsMultiNode() {
+		data, err := handleStringIntMapResponse(response)
+		if err != nil {
+			return createEmptyClusterValue[int64](), err
+		}
+		return createClusterMultiValue[int64](data), nil
+	}
+	data, err := handleIntResponse(response)
+	if err != nil {
+		return createEmptyClusterValue[int64](), err
+	}
+	return createClusterSingleValue[int64](data), nil
+}

go/api/response_handlers.go

@@ -1160,3 +1160,30 @@ func handleTimeClusterResponse(response *C.struct_CommandResponse) (ClusterValue
 	}
 	return createClusterSingleValue(data), nil
 }
+
+func handleStringIntMapResponse(response *C.struct_CommandResponse) (map[string]int64, error) {
+	defer C.free_command_response(response)
+
+	typeErr := checkResponseType(response, C.Map, false)
+	if typeErr != nil {
+		return nil, typeErr
+	}
+
+	data, err := parseMap(response)
+	if err != nil {
+		return nil, err
+	}
+	aMap := data.(map[string]interface{})
+
+	converted, err := mapConverter[int64]{
+		nil, false,
+	}.convert(aMap)
+	if err != nil {
+		return nil, err
+	}
+	result, ok := converted.(map[string]int64)
+	if !ok {
+		return nil, &errors.RequestError{Msg: fmt.Sprintf("unexpected type of map: %T", converted)}
+	}
+	return result, nil
+}

go/api/server_management_cluster_commands.go

@@ -17,4 +17,6 @@ type ServerManagementClusterCommands interface {
 	TimeWithOptions(routeOption options.RouteOption) (ClusterValue[[]string], error)
 
 	DBSizeWithOptions(routeOption options.RouteOption) (int64, error)
+
+	LastSaveWithOptions(routeOption options.RouteOption) (ClusterValue[int64], error)
 }

go/integTest/cluster_commands_test.go

@@ -298,3 +298,28 @@ func (suite *GlideTestSuite) TestEchoCluster() {
 		assert.Contains(t, strings.ToLower(messages), strings.ToLower("hello"))
 	}
 }
+
+func (suite *GlideTestSuite) TestLastSaveCluster() {
+	client := suite.defaultClusterClient()
+	t := suite.T()
+
+	// LastSave with option or with multiple options without route
+	opts := options.RouteOption{Route: nil}
+	response, err := client.LastSaveWithOptions(opts)
+	assert.NoError(t, err)
+	assert.True(t, response.IsSingleValue())
+
+	// same sections with random route
+	route := config.Route(config.RandomRoute)
+	opts = options.RouteOption{Route: route}
+	response, err = client.LastSaveWithOptions(opts)
+	assert.NoError(t, err)
+	assert.True(t, response.IsSingleValue())
+
+	// default sections, multi node route
+	route = config.Route(config.AllPrimaries)
+	opts = options.RouteOption{Route: route}
+	response, err = client.LastSaveWithOptions(opts)
+	assert.NoError(t, err)
+	assert.True(t, response.IsMultiValue())
+}