/
store_device_token_redis.go
169 lines (141 loc) · 3.66 KB
/
store_device_token_redis.go
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package mfa
import (
"context"
"encoding/json"
"errors"
"fmt"
"time"
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 StoreDeviceTokenRedis struct {
Redis *appredis.Handle
AppID config.AppID
Clock clock.Clock
}
func (s *StoreDeviceTokenRedis) Get(userID string, token string) (*DeviceToken, error) {
var deviceToken *DeviceToken
err := s.Redis.WithConn(func(conn *goredis.Conn) error {
ctx := context.Background()
key := redisDeviceTokensKey(s.AppID, userID)
data, err := conn.Get(ctx, key).Bytes()
if errors.Is(err, goredis.Nil) {
return ErrDeviceTokenNotFound
} else if err != nil {
return err
}
tokens := map[string]*DeviceToken{}
err = json.Unmarshal(data, &tokens)
if err != nil {
return err
}
if changed, ttl := houseKeepDeviceTokens(tokens, s.Clock.NowUTC()); changed {
if err := s.saveTokens(conn, key, tokens, ttl); err != nil {
return err
}
}
t, ok := tokens[token]
if !ok {
return ErrDeviceTokenNotFound
}
deviceToken = t
deviceToken.UserID = userID
deviceToken.Token = token
return nil
})
if err != nil {
return nil, err
}
return deviceToken, nil
}
func (s *StoreDeviceTokenRedis) Create(token *DeviceToken) error {
err := s.Redis.WithConn(func(conn *goredis.Conn) error {
ctx := context.Background()
key := redisDeviceTokensKey(s.AppID, token.UserID)
tokens := map[string]*DeviceToken{}
data, err := conn.Get(ctx, key).Bytes()
if err != nil {
if !errors.Is(err, goredis.Nil) {
return err
}
} else {
if err := json.Unmarshal(data, &tokens); err != nil {
return err
}
}
if _, exists := tokens[token.Token]; exists {
return errors.New("duplicated bearer token")
}
tokens[token.Token] = token
_, ttl := houseKeepDeviceTokens(tokens, s.Clock.NowUTC())
if err := s.saveTokens(conn, key, tokens, ttl); err != nil {
return err
}
return nil
})
return err
}
func (s *StoreDeviceTokenRedis) DeleteAll(userID string) error {
err := s.Redis.WithConn(func(conn *goredis.Conn) error {
key := redisDeviceTokensKey(s.AppID, userID)
ctx := context.Background()
_, err := conn.Del(ctx, key).Result()
return err
})
return err
}
func (s *StoreDeviceTokenRedis) HasTokens(userID string) (bool, error) {
hasTokens := false
err := s.Redis.WithConn(func(conn *goredis.Conn) error {
ctx := context.Background()
key := redisDeviceTokensKey(s.AppID, userID)
_, err := conn.Get(ctx, key).Bytes()
if err != nil {
if errors.Is(err, goredis.Nil) {
hasTokens = false
return nil
}
return err
}
hasTokens = true
return nil
})
return hasTokens, err
}
func (s *StoreDeviceTokenRedis) saveTokens(conn *goredis.Conn, key string, tokens map[string]*DeviceToken, ttl time.Duration) error {
ctx := context.Background()
if len(tokens) > 0 {
data, err := json.Marshal(tokens)
if err != nil {
return err
}
_, err = conn.Set(ctx, key, data, ttl).Result()
if err != nil {
return err
}
} else {
_, err := conn.Del(ctx, key).Result()
if err != nil {
return err
}
}
return nil
}
func houseKeepDeviceTokens(tokens map[string]*DeviceToken, now time.Time) (changed bool, ttl time.Duration) {
maxExpiry := now
for token, model := range tokens {
if now.After(model.ExpireAt) {
delete(tokens, token)
changed = true
} else if model.ExpireAt.After(maxExpiry) {
maxExpiry = model.ExpireAt
}
}
ttl = maxExpiry.Sub(now)
return
}
func redisDeviceTokensKey(appID config.AppID, userID string) string {
return fmt.Sprintf("app:%s:device-tokens:%s", appID, userID)
}