124 lines
2.8 KiB
Go
124 lines
2.8 KiB
Go
/*
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* Copyright 2024 the KubeSphere Authors.
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* Please refer to the LICENSE file in the root directory of the project.
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* https://github.com/kubesphere/kubesphere/blob/master/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/v2"
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"kubesphere.io/kubesphere/pkg/server/options"
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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 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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