devlopment branch (#1736)

pkg/simple/client/cache/redis.go

@@ -0,0 +1,87 @@
+/*
+
+ 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 cache
+
+import (
+	"github.com/go-redis/redis"
+	"k8s.io/klog"
+	"time"
+)
+
+type Client struct {
+	client *redis.Client
+}
+
+func NewRedisClient(option *Options, stopCh <-chan struct{}) (Interface, error) {
+	var r Client
+
+	options, err := redis.ParseURL(option.RedisURL)
+
+	if err != nil {
+		klog.Error(err)
+		return nil, err
+	}
+
+	if stopCh == nil {
+		klog.Warningf("no stop signal passed, may cause redis connections leaked")
+	}
+
+	r.client = redis.NewClient(options)
+
+	if err := r.client.Ping().Err(); err != nil {
+		klog.Error("unable to reach redis host", err)
+		r.client.Close()
+		return nil, err
+	}
+
+	// close redis in case of connection leak
+	if stopCh != nil {
+		go func() {
+			<-stopCh
+			if err := r.client.Close(); err != nil {
+				klog.Error(err)
+			}
+		}()
+	}
+
+	return &r, nil
+}
+
+func (r *Client) Get(key string) (string, error) {
+	return "", nil
+}
+
+func (r *Client) Keys(pattern string) ([]string, error) {
+	panic("implement me")
+}
+
+func (r *Client) Set(key string, value string, duration time.Duration) error {
+	panic("implement me")
+}
+
+func (r *Client) Del(key string) error {
+	panic("implement me")
+}
+
+func (r *Client) Exists(key string) (bool, error) {
+	panic("implement me")
+}
+
+func (r *Client) Expire(key string, duration time.Duration) error {
+	panic("implement me")
+}