105 lines
2.3 KiB
Go
105 lines
2.3 KiB
Go
package cache
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/spf13/viper"
|
|
clientv3 "go.etcd.io/etcd/client/v3"
|
|
"go.etcd.io/etcd/client/v3/namespace"
|
|
)
|
|
|
|
type CacheHandler struct {
|
|
*clientv3.Client
|
|
}
|
|
|
|
func NewCacheHandler(cfg *viper.Viper) (*CacheHandler, error) {
|
|
var (
|
|
endpoints = cfg.GetStringSlice("cache.storage.etcd.endpoints")
|
|
prefix = cfg.GetString("cache.storage.etcd.prefix")
|
|
)
|
|
|
|
cli, err := clientv3.New(clientv3.Config{
|
|
Endpoints: endpoints,
|
|
DialTimeout: 5 * time.Second,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
cli.KV = namespace.NewKV(cli.KV, prefix)
|
|
cli.Watcher = namespace.NewWatcher(cli.Watcher, prefix)
|
|
cli.Lease = namespace.NewLease(cli.Lease, prefix)
|
|
|
|
return &CacheHandler{
|
|
Client: cli,
|
|
}, nil
|
|
}
|
|
|
|
func (s *CacheHandler) Put(k string, v any) error {
|
|
data, err := json.Marshal(v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// _, err = s.Client.KV.Put(context.TODO(), k, data.String())
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
_, err = s.Client.KV.Put(ctx, k, string(data))
|
|
cancel()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *CacheHandler) PutWithTTL(k string, v any, duration time.Duration) error {
|
|
lease, err := s.Client.Lease.Grant(context.TODO(), int64(duration.Seconds()))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
data, err := json.Marshal(v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// _, err = s.Client.KV.Put(context.TODO(), k, data.String(), clientv3.WithLease(lease.ID))
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
_, err = s.Client.KV.Put(ctx, k, string(data), clientv3.WithLease(lease.ID))
|
|
cancel()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *CacheHandler) Get(k string) (any, error) {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
resp, err := s.Client.KV.Get(ctx, k)
|
|
cancel()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, v := range resp.Kvs {
|
|
var data any
|
|
err := json.Unmarshal([]byte(v.Value), &data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// We return directly as we want to last revision of value
|
|
return data, nil
|
|
}
|
|
return nil, errors.New(fmt.Sprintf("no value %v", k))
|
|
}
|
|
|
|
func (s *CacheHandler) Delete(k string) error {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
_, err := s.Client.KV.Delete(ctx, k)
|
|
cancel()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|