Migrate an orderly archive — orderly

Migrate an orderly archive. This is needed periodically when the orderly archive version changes. If you get a message like orderly archive needs migrating from a.b.c => x.y.z then you need to run this function. The archive version is at most equal to the package version.

Usage

orderly_migrate(
  root = NULL,
  locate = TRUE,
  to = NULL,
  dry_run = FALSE,
  skip_failed = FALSE,
  clean = FALSE
)

Arguments

root: The path to an orderly root directory, or NULL (the default) to search for one from the current working directory if locate is TRUE.
locate: Logical, indicating if the configuration should be searched for. If TRUE and config is not given, then orderly looks in the working directory and up through its parents until it finds an orderly_config.yml file.
to: The version to migrate to. The default is the current archive version; this is almost always what is wanted.
dry_run: Logical, indicating if we should try running the migration but not actually applying it. This is intended primarily for developing new migrations and will probably not work if you are multiple archive versions behind.
skip_failed: Logical, where TRUE we will skip over entries that failed to be migrated. This is expected to be useful on local archives only because it violates the append-only nature of orderly. However, if a local archive contains unusual copies of orderly archives that can't be migrated this might come in helpful.
clean: Logical, where TRUE (and where the migration was successful and dry_run is FALSE) orderly will clean up all migration backup files. Use this periodically to clean up the archive.

Value

No return value, this function is called only for its side effects

Details

Sometimes we add change information saved out in the orderly run. This requires patching previously run versions of the orderly metadata and that's not something we want to do lightly. This function uses a relatively safe, and reversible, way of migrating metadata. We modify the orderly_run.rds files, but will create versioned backups as files are changed.

Examples

# Without an orderly repository created by a previous version of
# orderly, this function does nothing interesting:
path <- orderly::orderly_example("minimal")
orderly::orderly_migrate(path)