func migrateKey(c *client, conn *goredis.PoolConn, tp string, key []byte, timeout int64) error {
if !c.app.migrateKeyLock(tp, key) {
// other may also migrate this key, skip it
return errKeyInMigrating
}
defer c.app.migrateKeyUnlock(tp, key)
data, err := xdump(c.db, tp, key)
if err != nil {
return err
} else if data == nil {
return errNoKey
}
ttl, err := xttl(c.db, tp, key)
if err != nil {
return err
}
//timeout is milliseconds
t := time.Duration(timeout) * time.Millisecond
conn.SetReadDeadline(time.Now().Add(t))
//ttl is second, but restore need millisecond
if _, err = conn.Do("restore", key, ttl*1e3, data); err != nil {
return err
}
if err = xdel(c.db, tp, key); err != nil {
return err
}
return nil
}
