Roman Gafiyatullin
729cba9d9e
* sc-client-db: utils::open_database(...) — return OpenDbError so that the caller could tell the `OpenDbError::DoesNotExist` clearly * sc-client-db: utils::open_database(..) — accept the `create: bool` argument * sc-client-db: pruning — optional argument in the DatabaseSettings * sc-state-db: Split `Error<E>` into separate `Error<E>` and `StateDbError` * StateDb::open: choose the pruning-mode depending on the requested and stored values * sc-state-db: test for different combinations of stored and requested pruning-modes * CLI-argument: mark the unsafe-pruning as deprecated * Fix tests * tests: do not specify --pruning when running the substrate over the existing storage * fix types for benches * cargo fmt * Check whether the pruning-mode and sync-mode are compatible * cargo fmt * parity-db: 0.3.11 -> 0.3.12 * sc-state-db: MetaDb::set_meta — a better doc-test * cargo fmt * make MetaDb read-only again! * Remove the stray newline (and run the CI once again please) * Last nitpicks * A more comprehensive error message
State database maintenance. Handles canonicalization and pruning in the database. The input to
this module is a ChangeSet which is basically a list of key-value pairs (trie nodes) that
were added or deleted during block execution.
Canonicalization.
Canonicalization window tracks a tree of blocks identified by header hash. The in-memory overlay allows to get any node that was inserted in any of the blocks within the window. The tree is journaled to the backing database and rebuilt on startup. Canonicalization function selects one root from the top of the tree and discards all other roots and their subtrees.
Pruning.
See RefWindow for pruning algorithm details. StateDb prunes on each canonicalization until pruning
constraints are satisfied.
License: GPL-3.0-or-later WITH Classpath-exception-2.0