Commit graph

59 commits

Author SHA1 Message Date
Roman Khimov
0c264b1486 mpt: fix comment typo 2020-09-21 17:54:11 +03:00
Roman Khimov
e7d13e6db2 *: fix misspellings found in Go Report Card 2020-08-14 12:16:24 +03:00
Roman Khimov
caea6d6ca8 mpt: fix extension node cache invalidation
It should always be invalidated if something changes in the `next` (below the
extension node).

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Roman Khimov
2b53877dff mpt: don't flush nodes already present in the DB
It's just a waste of time.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Roman Khimov
475bf2445a mpt: restructure nodes a bit, implement serialization and hash cache
It drastically reduces the number of allocations and hash calculations.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Evgenii Stratonikov
6ca22027d5 mpt: implement (*Trie).Collapse()
Because trie size is rather big, it can't be stored in memory.
Thus some form of caching should also be implemented. To avoid
marshaling/unmarshaling of items which are close to root and are used
very frequenly we can save them across the persists.
This commit implements pruning items at the specified depth,
replacing them by hash nodes.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Evgenii Stratonikov
f0b85f8af7 mpt: implement JSON marshaling/unmarshaling
Because there is no distinct type field in JSONized nodes, distinction
is made via payload itself, thus all unmarshaling is done via
NodeObject.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Evgenii Stratonikov
9b328240dd mpt: implement MPT proof Get and Verify
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00
Evgenii Stratonikov
dc6741bce7 mpt: implement MPT trie
MPT is a trie with a branching factor = 16, i.e. it consists of sequences in
16-element alphabet.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-30 12:42:15 +03:00