Function write_database_format_version_to_disk

pub fn write_database_format_version_to_disk(
    config: &Config,
    db_kind: impl AsRef<str>,
    changed_version: &Version,
    network: &Network,
) -> Result<(), BoxError>

Writes changed_version to the on-disk database after the format is changed. (Or a new database is created.)

The database path is based on its kind, changed_version.major, and network.

Correctness

This should only be called:

• after each format upgrade is complete,
• when creating a new database, or
• when an older Zebra version opens a newer database.

Concurrency

This must only be called while RocksDB has an open database for config. Otherwise, multiple Zebra processes could write the version at the same time, corrupting the file.