Add image load.

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/client/client.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2017 The Kubernetes 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 client
+
+import (
+	"fmt"
+	"time"
+
+	"google.golang.org/grpc"
+	"k8s.io/kubernetes/pkg/kubelet/util"
+
+	api "github.com/kubernetes-incubator/cri-containerd/pkg/api/v1"
+)
+
+// NewCRIContainerdClient creates grpc client of cri-containerd
+// TODO(random-liu): Wrap grpc functions.
+func NewCRIContainerdClient(endpoint string, timeout time.Duration) (api.CRIContainerdServiceClient, error) {
+	addr, dailer, err := util.GetAddressAndDialer(endpoint)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get dialer: %v", err)
+	}
+	conn, err := grpc.Dial(addr,
+		grpc.WithInsecure(),
+		grpc.WithTimeout(timeout),
+		grpc.WithDialer(dailer),
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to dial: %v", err)
+	}
+	return api.NewCRIContainerdServiceClient(conn), nil
+}