c0419ddab5
* add dynamic options for cache * fixed bugs based on unit-test * add doc for cache * make cache implements be private * Change simpleCache name to InMemoryCache Signed-off-by: Wenhao Zhou <wenhaozhou@yunify.com> * Remove fake cache and replacing to in memory cache with default parameter Signed-off-by: Wenhao Zhou <wenhaozhou@yunify.com> Signed-off-by: Wenhao Zhou <wenhaozhou@yunify.com> Co-authored-by: Wenhao Zhou <wenhaozhou@yunify.com>
132 lines
3.1 KiB
Go
132 lines
3.1 KiB
Go
/*
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Copyright 2019 The KubeSphere Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cache
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import (
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"errors"
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"fmt"
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"time"
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"github.com/go-redis/redis"
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"github.com/mitchellh/mapstructure"
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"k8s.io/klog"
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)
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const typeRedis = "redis"
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type redisClient struct {
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client *redis.Client
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}
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// redisOptions used to create a redis client.
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type redisOptions struct {
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Host string `json:"host" yaml:"host" mapstructure:"host"`
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Port int `json:"port" yaml:"port" mapstructure:"port"`
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Password string `json:"password" yaml:"password" mapstructure:"password"`
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DB int `json:"db" yaml:"db" mapstructure:"db"`
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}
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func NewRedisClient(option *redisOptions, stopCh <-chan struct{}) (Interface, error) {
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var r redisClient
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redisOptions := &redis.Options{
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Addr: fmt.Sprintf("%s:%d", option.Host, option.Port),
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Password: option.Password,
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DB: option.DB,
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}
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if stopCh == nil {
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klog.Fatalf("no stop channel passed, redis connections will leak.")
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}
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r.client = redis.NewClient(redisOptions)
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if err := r.client.Ping().Err(); err != nil {
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r.client.Close()
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return nil, err
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}
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// close redis in case of connection leak
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if stopCh != nil {
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go func() {
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<-stopCh
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if err := r.client.Close(); err != nil {
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klog.Error(err)
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}
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}()
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}
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return &r, nil
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}
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func (r *redisClient) Get(key string) (string, error) {
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return r.client.Get(key).Result()
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}
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func (r *redisClient) Keys(pattern string) ([]string, error) {
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return r.client.Keys(pattern).Result()
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}
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func (r *redisClient) Set(key string, value string, duration time.Duration) error {
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return r.client.Set(key, value, duration).Err()
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}
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func (r *redisClient) Del(keys ...string) error {
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return r.client.Del(keys...).Err()
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}
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func (r *redisClient) Exists(keys ...string) (bool, error) {
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existedKeys, err := r.client.Exists(keys...).Result()
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if err != nil {
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return false, err
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}
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return len(keys) == int(existedKeys), nil
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}
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func (r *redisClient) Expire(key string, duration time.Duration) error {
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return r.client.Expire(key, duration).Err()
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}
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type redisFactory struct{}
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func (rf *redisFactory) Type() string {
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return typeRedis
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}
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func (rf *redisFactory) Create(options DynamicOptions, stopCh <-chan struct{}) (Interface, error) {
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var rOptions redisOptions
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if err := mapstructure.Decode(options, &rOptions); err != nil {
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return nil, err
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}
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if rOptions.Port == 0 {
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return nil, errors.New("invalid service port number")
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}
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if len(rOptions.Host) == 0 {
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return nil, errors.New("invalid service host")
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}
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client, err := NewRedisClient(&rOptions, stopCh)
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if err != nil {
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return nil, err
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}
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return client, nil
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}
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func init() {
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RegisterCacheFactory(&redisFactory{})
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}
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