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redis.go
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redis.go
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package redis
import (
"github.com/micro/go-os/kv"
redis "gopkg.in/redis.v3"
)
type rkv struct {
Client *redis.Client
}
func (r *rkv) Close() error {
return nil
}
func (r *rkv) Get(key string) (*kv.Item, error) {
val, err := r.Client.Get(key).Bytes()
if err != nil && err == redis.Nil {
return nil, kv.ErrNotFound
} else if err != nil {
return nil, err
}
if val == nil {
return nil, kv.ErrNotFound
}
d, err := r.Client.TTL(key).Result()
if err != nil {
return nil, err
}
return &kv.Item{
Key: key,
Value: val,
Expiration: d,
}, nil
}
func (r *rkv) Del(key string) error {
return r.Client.Del(key).Err()
}
func (r *rkv) Put(item *kv.Item) error {
return r.Client.Set(item.Key, item.Value, item.Expiration).Err()
}
func (r *rkv) String() string {
return "redis"
}
func NewKV(opts ...kv.Option) kv.KV {
var options kv.Options
for _, o := range opts {
o(&options)
}
if len(options.Servers) == 0 {
options.Servers = []string{"127.0.0.1:6379"}
}
return &rkv{
Client: redis.NewClient(&redis.Options{
Addr: options.Servers[0],
Password: "", // no password set
DB: 0, // use default DB
}),
}
}