Kristian Nielsen 8eee9806fb MDEV-31273: Eliminate Log_event::checksum_alg ...

This is a preparatory commit for pre-computing checksums outside of
holding LOCK_log, no functional changes.

Which checksum algorithm is used (if any) when writing an event does not
belong in the event, it is a property of the log being written to.

Instead decide the checksum algorithm when constructing the
Log_event_writer object, and store it there.

Introduce a client-only Log_event::read_checksum_alg to be able to
print the checksum read, and a
Format_description_log_event::source_checksum_alg which is the
checksum algorithm (if any) to use when reading events from a log.

Also eliminate some redundant `enum` keywords on the enum_binlog_checksum_alg
type.

Reviewed-by: Monty <monty@mariadb.org>
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>

2023-10-26 20:45:35 +02:00

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