Module schema_connector::migrations_directory

Migrations directory management.

This module is responsible for the management of the contents of the migrations directory. At the top level it contains a migration_lock.toml file which lists the provider. It also contains multiple subfolders, named after the migration id, and each containing:

• A migration script

Structs

• ListMigrationsError
  An IO error that occurred while reading the migrations directory.
• MigrationDirectory
  Proxy to a directory containing one migration, as returned by create_migration_directory and list_migrations.
• ReadMigrationScriptError
  Error while reading a migration script.

Constants

• MIGRATION_LOCK_FILENAME
  The file name for the migration lock file, not including the file extension.
• MIGRATION_SCRIPT_FILENAME
  The file name for migration scripts, not including the file extension.

Functions

• create_migration_directory
  Create a directory for a new migration.
• error_on_changed_provider
  Error if the provider in the schema does not match the one in the schema_lock.toml
• list_migrations
  List the migrations present in the migration directory, lexicographically sorted by name.
• read_provider_from_lock_file
  Read the provider from the migration_lock.toml. None means there was no migration_lock.toml file in the directory.
• write_migration_lock_file
  Write the migration_lock file to the directory.