librustzcash/zcash_client_sqlite/CHANGELOG.md

Changelog

All notable changes to this library will be documented in this file.

The format is based on Keep a Changelog, and this library adheres to Rust's notion of Semantic Versioning.

[Unreleased]

Added

• zcash_client_sqlite::serialization Serialization formats for data stored as SQLite BLOBs in the wallet database.

Changed

• MSRV is now 1.65.0.
• Bumped dependencies to hdwallet 0.4, incrementalmerkletree 0.4, bs58 0.5, zcash_primitives 0.12
• A CommitmentTree variant has been added to zcash_client_sqlite::wallet::init::WalletMigrationError
• min_confirmations parameter values are now more strongly enforced. Previously, a note could be spent with fewer than min_confirmations confirmations if the wallet did not contain enough observed blocks to satisfy the min_confirmations value specified; this situation is now treated as an error.

Removed

• The empty wallet::transact module has been removed.

[0.7.1] - 2023-05-17

Fixed

• Fixes a potential crash that could occur when attempting to read a memo from sqlite when the memo value is NULL. At present, we return the empty memo in this case; in the future, the get_memo API will be updated to reflect the potential absence of memo data.

[0.7.0] - 2023-04-28

Changed

• Bumped dependencies to zcash_client_backend 0.9.

Removed

• The following deprecated types and methods have been removed from the public API:
  • wallet::ShieldedOutput
  • wallet::block_height_extrema
  • wallet::get_address
  • wallet::get_all_nullifiers
  • wallet::get_balance
  • wallet::get_balance_at
  • wallet::get_block_hash
  • wallet::get_commitment_tree
  • wallet::get_nullifiers
  • wallet::get_received_memo
  • wallet::get_rewind_height
  • wallet::get_sent_memo
  • wallet::get_spendable_sapling_notes
  • wallet::get_transaction
  • wallet::get_tx_height
  • wallet::get_unified_full_viewing_keys
  • wallet::get_witnesses
  • wallet::insert_block
  • wallet::insert_witnesses
  • wallet::is_valid_account_extfvk
  • wallet::mark_sapling_note_spent
  • wallet::put_tx_data
  • wallet::put_tx_meta
  • wallet::prune_witnesses
  • wallet::select_spendable_sapling_notes
  • wallet::update_expired_notes
  • wallet::transact::get_spendable_sapling_notes
  • wallet::transact::select_spendable_sapling_notes

[0.6.0] - 2023-04-15

Added

• SQLite view v_tx_outputs, exposing the history of transaction outputs sent from and received by the wallet. See zcash_client_sqlite::wallet for view documentation.

Fixed

• In a previous crate release, WalletDb was modified to start tracking Sapling change notes in both the sent_notes and received_notes tables, as a form of double-entry accounting. This broke assumptions in the v_transactions SQLite view, and also left the sent_notes table in an inconsistent state. A migration has been added to this release which fixes the sent_notes table to consistently store Sapling change notes.
• The SQLite view v_transactions had several bugs independently from the above issue, and has been rewritten. See zcash_client_sqlite::wallet for view documentation.

Changed

• Bumped dependencies to group 0.13, jubjub 0.10, zcash_primitives 0.11, zcash_client_backend 0.8.
• The dependency on zcash_primitives no longer enables the multicore feature by default in order to support compilation under wasm32-wasi. Users of other platforms may need to include an explicit dependency on zcash_primitives without default-features = false or otherwise explicitly enable the zcash_primitives/multicore feature if they did not already depend upon zcash_primitives with default features enabled.

Removed

• SQLite views v_tx_received and v_tx_sent (use v_tx_outputs instead).

[0.5.0] - 2023-02-01

Added

• zcash_client_sqlite::FsBlockDb::rewind_to_height rewinds the BlockMeta Db to the specified height following the same logic as homonymous functions on WalletDb. This function does not delete the files referenced by the rows that might be present and are deleted by this function call.
• zcash_client_sqlite::FsBlockDb::find_block
• zcash_client_sqlite::chain:
  • impl {Clone, Copy, Debug, PartialEq, Eq} for BlockMeta

Changed

• MSRV is now 1.60.0.
• Bumped dependencies to zcash_primitives 0.10, zcash_client_backend 0.7.
• zcash_client_backend::FsBlockDbError:
  • Renamed FsBlockDbError::{DbError, FsError} to FsBlockDbError::{Db, Fs}.
  • Added FsBlockDbError::MissingBlockPath.
  • impl fmt::Display for FsBlockDbError

[0.4.2] - 2022-12-13

Fixed

• zcash_client_sqlite::WalletDb::get_transparent_balances no longer returns an error if the wallet has no UTXOs.

[0.4.1] - 2022-12-06

Added

• zcash_client_sqlite::DataConnStmtCache::advance_by_block now generates a tracing span, which can be used for profiling.

[0.4.0] - 2022-11-12

Added

• Implementations of zcash_client_backend::data_api::WalletReadTransparent and WalletWriteTransparent have been added. These implementations are available only when the transparent-inputs feature flag is enabled.
• New error variants:
  • SqliteClientError::TransparentAddress, to support handling of errors in transparent address decoding.
  • SqliteClientError::RequestedRewindInvalid, to report when requested rewinds exceed supported bounds.
  • SqliteClientError::DiversifierIndexOutOfRange, to report when the space of available diversifier indices has been exhausted.
  • SqliteClientError::AccountIdDiscontinuity, to report when a user attempts to initialize the accounts table with a noncontiguous set of account identifiers.
  • SqliteClientError::AccountIdOutOfRange, to report when the maximum account identifier has been reached.
  • SqliteClientError::Protobuf, to support handling of errors in serialized protobuf data decoding.
• An unstable feature flag; this is added to parts of the API that may change in any release. It enables zcash_client_backend's unstable feature flag.
• New summary views that may be directly accessed in the sqlite database. The structure of these views should be considered unstable; they may be replaced by accessors provided by the data access API at some point in the future:
  • v_transactions
  • v_tx_received
  • v_tx_sent
• zcash_client_sqlite::wallet::init::WalletMigrationError
• A filesystem-backed BlockSource implementation zcash_client_sqlite::FsBlockDb. This block source expects blocks to be stored on disk in individual files named following the pattern <blockmeta_root>/blocks/<blockheight>-<blockhash>-compactblock. A SQLite database stored at <blockmeta_root>/blockmeta.sqlitestores metadata for this block source.
  • zcash_client_sqlite::chain::init::init_blockmeta_db creates the required metadata cache database.
• Implementations of PartialEq, Eq, PartialOrd, and Ord for NoteId

Changed

• Various BREAKING CHANGES have been made to the database tables. These will require migrations, which may need to be performed in multiple steps. Migrations will now be automatically performed for any user using zcash_client_sqlite::wallet::init_wallet_db and it is recommended to use this method to maintain the state of the database going forward.
  • The extfvk column in the accounts table has been replaced by a ufvk column. Values for this column should be derived from the wallet's seed and the account number; the Sapling component of the resulting Unified Full Viewing Key should match the old value in the extfvk column.
  • The address and transparent_address columns of the accounts table have been removed.
    • A new addresses table stores Unified Addresses, keyed on their account and diversifier_index, to enable storing diversifed Unified Addresses.
    • Transparent addresses for an account should be obtained by extracting the transparent receiver of a Unified Address for the account.
  • A new non-null column, output_pool has been added to the sent_notes table to enable distinguishing between Sapling and transparent outputs (and in the future, outputs to other pools). Values for this column should be assigned by inference from the address type in the stored data.
• MSRV is now 1.56.1.
• Bumped dependencies to ff 0.12, group 0.12, jubjub 0.9, zcash_primitives 0.9, zcash_client_backend 0.6.
• Renamed the following to use lower-case abbreviations (matching Rust naming conventions):
  • zcash_client_sqlite::BlockDB to BlockDb
  • zcash_client_sqlite::WalletDB to WalletDb
  • zcash_client_sqlite::error::SqliteClientError::IncorrectHRPExtFVK to IncorrectHrpExtFvk.
• The SQLite implementations of zcash_client_backend::data_api::WalletRead and WalletWrite have been updated to reflect the changes to those traits.
• zcash_client_sqlite::wallet:
  • get_spendable_notes has been renamed to get_spendable_sapling_notes.
  • select_spendable_notes has been renamed to select_spendable_sapling_notes.
  • get_spendable_sapling_notes and select_spendable_sapling_notes have also been changed to take a parameter that permits the caller to specify a set of notes to exclude from consideration.
  • init_wallet_db has been modified to take the wallet seed as an argument so that it can correctly perform migrations that require re-deriving key material. In particular for this upgrade, the seed is used to derive UFVKs to replace the currently stored Sapling ExtFVKs (without losing information) as part of the migration process.

Removed

• The following functions have been removed from the public interface of zcash_client_sqlite::wallet. Prefer methods defined on zcash_client_backend::data_api::{WalletRead, WalletWrite} instead.
  • get_extended_full_viewing_keys (use WalletRead::get_unified_full_viewing_keys instead).
  • insert_sent_note (use WalletWrite::store_sent_tx instead).
  • insert_sent_utxo (use WalletWrite::store_sent_tx instead).
  • put_sent_note (use WalletWrite::store_decrypted_tx instead).
  • put_sent_utxo (use WalletWrite::store_decrypted_tx instead).
  • delete_utxos_above (use WalletWrite::rewind_to_height instead).
• zcash_client_sqlite::with_blocks (use zcash_client_backend::data_api::BlockSource::with_blocks instead).
• zcash_client_sqlite::error::SqliteClientError variants:
  • SqliteClientError::IncorrectHrpExtFvk
  • SqliteClientError::Base58
  • SqliteClientError::BackendError

Fixed

• The zcash_client_backend::data_api::WalletRead::get_address implementation for zcash_client_sqlite::WalletDb now correctly returns Ok(None) if the account identifier does not correspond to a known account.

Deprecated

• A number of public API methods that are used internally to support the zcash_client_backend::data_api::{WalletRead, WalletWrite} interfaces have been deprecated, and will be removed from the public API in a future release. Users should depend upon the versions of these methods exposed via the zcash_client_backend::data_api traits mentioned above instead.
  • Deprecated in zcash_client_sqlite::wallet:
    • get_address
    • is_valid_account_extfvk
    • get_balance
    • get_balance_at
    • get_sent_memo
    • block_height_extrema
    • get_tx_height
    • get_block_hash
    • get_rewind_height
    • get_commitment_tree
    • get_witnesses
    • get_nullifiers
    • insert_block
    • put_tx_meta
    • put_tx_data
    • mark_sapling_note_spent
    • put_receiverd_note
    • insert_witness
    • prune_witnesses
    • update_expired_notes
    • get_address
  • Deprecated in zcash_client_sqlite::wallet::transact:
    • get_spendable_sapling_notes
    • select_spendable_sapling_notes

[0.3.0] - 2021-03-26

This release contains a major refactor of the APIs to leverage the new Data Access API in the zcash_client_backend crate. API names are almost all the same as before, but have been reorganized.

Added

• zcash_client_sqlite::BlockDB, a read-only wrapper for the SQLite connection to the block cache database.
• zcash_client_sqlite::WalletDB, a read-only wrapper for the SQLite connection to the wallet database.
• zcash_client_sqlite::DataConnStmtCache, a read-write wrapper for the SQLite connection to the wallet database. Returned by WalletDB::get_update_ops.
• zcash_client_sqlite::NoteId

Changed

• MSRV is now 1.47.0.
• APIs now take &BlockDB and &WalletDB<P> arguments, instead of paths to the block cache and wallet databases.
• The library no longer uses the mainnet feature flag to specify the network type. APIs now take a P: zcash_primitives::consensus::Parameters variable.

Removed

• zcash_client_sqlite::address module (moved to zcash_client_backend).

Fixed

• Shielded transactions created by the wallet that have no change output (fully spending their input notes) are now correctly detected as mined when scanning compact blocks.
• Unshielding transactions created by the wallet (with a transparent recipient address) that have no change output no longer cause a panic.

[0.2.1] - 2020-10-24

Fixed

• transact::create_to_address now correctly reconstructs notes from the data DB after Canopy activation (zcash/librustzcash#311). This is critcal to correct operation of spends after Canopy.

[0.2.0] - 2020-09-09

Changed

• MSRV is now 1.44.1.
• Bumped dependencies to ff 0.8, group 0.8, jubjub 0.5.1, protobuf 2.15, rusqlite 0.24, zcash_primitives 0.4, zcash_client_backend 0.4.

[0.1.0] - 2020-08-24

Initial release.