* Working on a better database abstraction
After [this question in the chat](https://matrix.to/#/!oJFtttFHGfnTGrIjvD:matrix.cashu.space/$oJFtttFHGfnTGrIjvD:matrix.cashu.space/$I5ZtjJtBM0ctltThDYpoCwClZFlM6PHzf8q2Rjqmso8)
regarding a database transaction within the same function, I realized a few
design flaws in our SQL database abstraction, particularly regarding
transactions.
1. Our upper abstraction got it right, where a transaction is bound with `&mut
self`, so Rust knows how to handle its lifetime with' async/await'.
2. The raw database does not; instead, it returns &self, and beginning a
transaction takes &self as well, which is problematic for Rust, but that's not
all. It is fundamentally wrong. A transaction should take &mut self when
beginning a transaction, as that connection is bound to a transaction and
should not be returned to the pool. Currently, that responsibility lies with
the implementor. If a mistake is made, a transaction could be executed in two
or more connections.
3. The way a database is bound to our store layer is through a single struct,
which may or may not internally utilize our connection pool. This is also
another design flow, in this PR, a connection pool is owned, and to use a
connection, it should be requested, and that connection is reference with
mutable when beginning a transaction
* Improve the abstraction with fewer generics
As suggested by @thesimplekid
* Add BEGIN IMMEDIATE for SQLite
* feat: add keyset u32 mapping migration and duplicate handling
- Add new database migration (version 3) to include u32 representation for keysets
- Implement migration for both redb and SQL databases
- Add duplicate detection and handling for keyset entries
- Create unique index constraint for keyset_u32 column in SQL
- Update keyset storage to include u32 identifiers
- Handle backwards compatibility for existing databases
* chore: clippy
* refactor(cashu): simplify keyset ID verification logic
- Consolidate match expression into a single expression
- Use direct comparison with ensure_cdk macro
- Improve readability of keyset ID validation
* refactor(cdk): rename `fetch_keyset_keys` to `load_keyset_keys` for clarity
- Renamed `fetch_keyset_keys` to `load_keyset_keys` across multiple modules to better reflect its behavior of loading keys from local storage or fetching from mint when missing.
- Added debug logging to indicate when keys are being fetched from the mint.
- Simplified key loading logic in `update_mint_keysets` by removing redundant existence checks.
* chore: remove unused vec
* feat(cdk-integration-tests): refactor regtest setup and mintd integration
- Replace shell-based regtest setup with Rust binary (start_regtest_mints)
- Add cdk-mintd crate to workspace and integration tests
- Improve environment variable handling for test configurations
- Update integration tests to use proper temp directory management
- Remove deprecated start_regtest.rs binary
- Enhance CLN client connection with retry logic
- Simplify regtest shell script (itests.sh) to use new binary
- Fix tracing filters and improve error handling in setup
- Update dependencies and configurations for integration tests
fix: killing
chore: comment tests for ci debugging
chore: compile
Revert "chore: comment tests for ci debugging"
This reverts commit bfc594c11cf37caeaa6445cb854ae5567d2da6bd.
* chore: sql cipher
* fix: removal of sqlite cipher
* fix: auth password
* refactor(cdk-mintd): improve database password handling and function signatures
- Pass database password as parameter instead of parsing CLI args in setup_database
- Update function signatures for run_mintd and run_mintd_with_shutdown to accept db_password
- Remove direct CLI parsing from database setup logic
- Fix auth database initialization to use correct type when sqlcipher feature enabled
The primary purpose of this new crate is to have a common and shared codebase
for all SQL storage systems. It would force us to write standard SQL using best
practices for all databases.
This crate has been extracted from #878
Custom currency units were incorrectly being converted to uppercase
during deserialization. This change ensures custom units maintain
their original case while still allowing case-insensitive matching
for standard units.
- Add background service management with graceful shutdown handling
- Refactor invoice payment monitoring to use centralized task supervision
- Update cdk-mintd and integration tests to use new lifecycle methods
- Add comprehensive documentation and lifecycle tests
do not always return UnknownQuoteTTL
return UnknownMintInfo when appropriate
add a new UnknownConfigKey for unknown key values
unit tests to cover this functionality
