mirror of
https://github.com/c9s/bbgo.git
synced 2024-11-10 17:13:51 +00:00
112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
package service
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"net"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/go-redis/redis/v8"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
var redisLogger = log.WithFields(log.Fields{
|
|
"persistence": "redis",
|
|
})
|
|
|
|
type RedisPersistenceService struct {
|
|
redis *redis.Client
|
|
config *RedisPersistenceConfig
|
|
}
|
|
|
|
func NewRedisPersistenceService(config *RedisPersistenceConfig) *RedisPersistenceService {
|
|
client := redis.NewClient(&redis.Options{
|
|
Addr: net.JoinHostPort(config.Host, config.Port),
|
|
// Username: "", // username is only for redis 6.0
|
|
// pragma: allowlist nextline secret
|
|
Password: config.Password, // no password set
|
|
DB: config.DB, // use default DB
|
|
})
|
|
|
|
return &RedisPersistenceService{
|
|
redis: client,
|
|
config: config,
|
|
}
|
|
}
|
|
|
|
func (s *RedisPersistenceService) NewStore(id string, subIDs ...string) Store {
|
|
if len(subIDs) > 0 {
|
|
id += ":" + strings.Join(subIDs, ":")
|
|
}
|
|
|
|
if s.config != nil && s.config.Namespace != "" {
|
|
id = s.config.Namespace + ":" + id
|
|
}
|
|
|
|
return &RedisStore{
|
|
redis: s.redis,
|
|
ID: id,
|
|
}
|
|
}
|
|
|
|
type RedisStore struct {
|
|
redis *redis.Client
|
|
|
|
ID string
|
|
}
|
|
|
|
func (store *RedisStore) Load(val interface{}) error {
|
|
if store.redis == nil {
|
|
return errors.New("can not load from redis, possible cause: redis persistence is not configured, or you are trying to use redis in back-test")
|
|
}
|
|
|
|
cmd := store.redis.Get(context.Background(), store.ID)
|
|
data, err := cmd.Result()
|
|
|
|
redisLogger.Debugf("[redis] get key %q, data = %s", store.ID, string(data))
|
|
|
|
if err != nil {
|
|
if err == redis.Nil {
|
|
return ErrPersistenceNotExists
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
// skip null data
|
|
if len(data) == 0 || data == "null" {
|
|
return ErrPersistenceNotExists
|
|
}
|
|
|
|
return json.Unmarshal([]byte(data), val)
|
|
}
|
|
|
|
func (store *RedisStore) Save(val interface{}) error {
|
|
if val == nil {
|
|
return nil
|
|
}
|
|
|
|
var expiration time.Duration
|
|
if expiringData, ok := val.(Expirable); ok {
|
|
expiration = expiringData.Expiration()
|
|
}
|
|
|
|
data, err := json.Marshal(val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
cmd := store.redis.Set(context.Background(), store.ID, data, expiration)
|
|
_, err = cmd.Result()
|
|
|
|
redisLogger.Debugf("[redis] set key %q, data = %s, expiration = %s", store.ID, string(data), expiration)
|
|
|
|
return err
|
|
}
|
|
|
|
func (store *RedisStore) Reset() error {
|
|
_, err := store.redis.Del(context.Background(), store.ID).Result()
|
|
return err
|
|
} |