use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

pkg/simple/client/redis/redis.go

@@ -0,0 +1,56 @@
+/*
+
+ Copyright 2019 The KubeSphere 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 redis
+
+import (
+	"flag"
+	"log"
+	"sync"
+
+	"github.com/go-redis/redis"
+)
+
+var (
+	redisHost       string
+	redisPassword   string
+	redisDB         int
+	redisClientOnce sync.Once
+	redisClient     *redis.Client
+)
+
+func init() {
+	flag.StringVar(&redisHost, "redis-server", "localhost:6379", "redis server host")
+	flag.StringVar(&redisPassword, "redis-password", "", "redis password")
+	flag.IntVar(&redisDB, "redis-db", 0, "redis db")
+}
+
+func Client() *redis.Client {
+
+	redisClientOnce.Do(func() {
+		redisClient = redis.NewClient(&redis.Options{
+			Addr:     redisHost,
+			Password: redisPassword,
+			DB:       redisDB,
+		})
+		if err := redisClient.Ping().Err(); err != nil {
+			log.Fatalln(err)
+		}
+	})
+
+	return redisClient
+}