Function DecodeTableID

pkg/tablecodec/tablecodec.go:309–327

DecodeTableID decodes the table ID of the key, if the key is not table key, returns 0.

(key kv.Key)

// DecodeTableID decodes the table ID of the key, if the key is not table key, returns 0.
func DecodeTableID(key kv.Key) int64 {
	if !key.HasPrefix(tablePrefix) {
		// If the key is in API V2, then ignore the prefix
		_, k, err := tikv.DecodeKey(key, kvrpcpb.APIVersion_V2)
		if err != nil {
			terror.Log(errors.Trace(err))
			return 0
		}
		key = k
		if !key.HasPrefix(tablePrefix) {
			return 0
		}
	}
	key = key[len(tablePrefix):]
	_, tableID, err := codec.DecodeInt(key)
	// TODO: return error.
	terror.Log(errors.Trace(err))
	return tableID
}

// DecodeRowKey decodes the key and gets the handle.
func DecodeRowKey(key kv.Key) (kv.Handle, error) {