The rollback warning is now a LogEvent (kind='aborted', WARNING level,
carrying the exception) dispatched via emit_event so logemit callbacks can
handle or restyle it. Default rendering: action in transaction color
without quotes, followed by ' transaction aborted: {exc}' in default
color.
emit_event now swallows and reports any failure, including crashes in the
built-in default_emit formatting itself; log_change routes through it.
logfmt chain callbacks that raise are logged and treated as fall-through,
and logmigr callbacks get on_error reporting like fatal_error handlers,
so a broken logging callback can no longer abort a transaction or open.
Demo: raw user ids in v0 logs, logfmt-resolved names in v1 logs.
All change-related output (transactions, bootstrap, migrations) is now
described by a mutable LogEvent carrying full state plus the preferred
logger and level, and dispatched through emit_event. @kanta.logemit
callbacks receive the event and decide what is logged where: falsy return
marks it handled, truthy passes it (possibly modified) down the chain,
with default_emit - Kanta's own formatting, now just another emitter - as
the fallback. Pretty header and diff lines are lazy event properties.
New kanta.tty module: Line builder (call to append content, .colorname
arms a palette color for the next call with automatic folded reset,
width/align padding), a mutable Colors palette storing bare SGR params
(0 clears, sequential last-wins stacking), and strip_ansi/displaywidth/pad
helpers that count wide chars and emoji correctly.
Per-transaction logdiff=False skips building and printing the diff body,
logging only the header. Globally, configure_logging(diff=False) disables
the kanta.transaction.diff child logger, which now carries all diff lines,
so applications can route or silence diffs separately from headers.
- Bootstrap records are now logged via kanta.bootstrap at INFO level.
- Existing databases log 'Using <path>' at DEBUG on kanta.bootstrap.
- New databases log 'Created <path>' at INFO on kanta.bootstrap.
- Renamed loggers: kanta.changes -> kanta.transaction, kanta.migrations -> kanta.migration.
- configure_logging() gains bootstrap/migration/transaction/skiproot kwargs.
- Default configure_logging() attaches a no-prefix stderr handler to kanta and stops propagation.
- With skiproot=False, child logger propagation flags are still applied but kanta itself is left untouched.
- Updated tests and docstrings.
- Split transaction logger (kanta.changes) and migration logger (kanta.migrations).
- Migrations.apply() now returns MigrationResult instead of logging.
- Kanta.open() emits one info summary per DB and debug transaction per migration.
- Add open(log=...) to suppress/redirect default migration logging.
- Add @kanta.logmigr callback for custom migration logging/summaries.
- Add transaction(log=...) to suppress/redirect transaction logging.
- Update tests for the new MigrationResult API and logging behaviour.
Leo Vasanko