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token_store_redis.go
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token_store_redis.go
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package whatsapp
import (
"context"
"encoding/json"
"errors"
"fmt"
goredis "github.com/go-redis/redis/v8"
"github.com/authgear/authgear-server/pkg/lib/config"
"github.com/authgear/authgear-server/pkg/lib/infra/redis/appredis"
"github.com/authgear/authgear-server/pkg/util/clock"
)
type TokenStore struct {
Redis *appredis.Handle
AppID config.AppID
Clock clock.Clock
}
func (s *TokenStore) Set(token *UserToken) error {
ctx := context.Background()
data, err := json.Marshal(token)
if err != nil {
return err
}
return s.Redis.WithConn(func(conn *goredis.Conn) error {
key := redisTokenKey(s.AppID, token.Endpoint, token.Username)
ttl := token.ExpireAt.Sub(s.Clock.NowUTC())
_, err := conn.SetEX(ctx, key, data, ttl).Result()
if err != nil {
return err
}
return nil
})
}
func (s *TokenStore) Get(endpoint string, username string) (*UserToken, error) {
ctx := context.Background()
key := redisTokenKey(s.AppID, endpoint, username)
var token *UserToken
err := s.Redis.WithConn(func(conn *goredis.Conn) error {
data, err := conn.Get(ctx, key).Bytes()
if errors.Is(err, goredis.Nil) {
return nil
} else if err != nil {
return err
}
err = json.Unmarshal(data, &token)
if err != nil {
return err
}
return nil
})
return token, err
}
func redisTokenKey(appID config.AppID, endpoint string, username string) string {
return fmt.Sprintf("app:%s:whatsapp-on-prem-token:%s:%s", appID, endpoint, username)
}