@@ -20,7 +20,7 @@ import (
 	chaosdaemon "github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/pb"
 )
 
-var log = ctrl.Log.WithName("chaos-daemon-client-utils")
+var _ = ctrl.Log.WithName("chaos-daemon-client-utils")
 
 // ChaosDaemonClientInterface represents the ChaosDaemonClient, it's used to simply unit test
 type ChaosDaemonClientInterface interface {
// Copyright 2020 Chaos Mesh 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,
// See the License for the specific language governing permissions and
// limitations under the License.

package client

import (
	"google.golang.org/grpc"
	ctrl "sigs.k8s.io/controller-runtime"

	chaosdaemon "github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/pb"
)

var log = ctrl.Log.WithName("chaos-daemon-client-utils")

// ChaosDaemonClientInterface represents the ChaosDaemonClient, it's used to simply unit test
type ChaosDaemonClientInterface interface {
	chaosdaemon.ChaosDaemonClient
	Close() error
}

// GrpcChaosDaemonClient would act like chaosdaemon.ChaosDaemonClient with a Close method
type GrpcChaosDaemonClient struct {
	chaosdaemon.ChaosDaemonClient
	conn *grpc.ClientConn
}

func (c *GrpcChaosDaemonClient) Close() error {
	return c.conn.Close()
}

func New(conn *grpc.ClientConn) ChaosDaemonClientInterface {
	return &GrpcChaosDaemonClient{
		ChaosDaemonClient: chaosdaemon.NewChaosDaemonClient(conn),
		conn:              conn,
	}
}

If it is unused, you can just delete this line.