func decodeAbortCacheMVCCKey(
encKey engine.MVCCKey, dest []byte,
) (*uuid.UUID, error) {
if encKey.IsValue() {
return nil, util.Errorf("key %s is not a raw MVCC value", encKey)
}
return keys.DecodeAbortCacheKey(encKey.Key, dest)
}
func tryAbort(kv engine.MVCCKeyValue) (string, error) {
if kv.Key.Timestamp != hlc.ZeroTimestamp {
return "", errors.New("not an abort cache key")
}
_, err := keys.DecodeAbortCacheKey(kv.Key.Key, nil)
if err != nil {
return "", err
}
var dest roachpb.AbortCacheEntry
if err := maybeUnmarshalInline(kv.Value, &dest); err != nil {
return "", err
}
return fmt.Sprintf("key=%q, pri=%d\n", dest.Key, dest.Priority), nil
}
// Iterate walks through the abort cache, invoking the given callback for
// each unmarshaled entry with the key, the transaction ID and the decoded
// entry.
func (sc *AbortCache) Iterate(
e engine.Engine, f func([]byte, *uuid.UUID, roachpb.AbortCacheEntry),
) {
_, _ = engine.MVCCIterate(e, sc.min(), sc.max(), roachpb.ZeroTimestamp,
true /* consistent */, nil /* txn */, false, /* !reverse */
func(kv roachpb.KeyValue) (bool, error) {
var entry roachpb.AbortCacheEntry
txnID, err := keys.DecodeAbortCacheKey(kv.Key, nil)
if err != nil {
panic(err) // TODO(tschottdorf): ReplicaCorruptionError
}
if err := kv.Value.GetProto(&entry); err != nil {
panic(err) // TODO(tschottdorf): ReplicaCorruptionError
}
f(kv.Key, txnID, entry)
return false, nil
})
}