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Configuration

Templating

No matter which configuration method you use, you can use ERB templating to fill in dynamic values. For example, you may want to use the table name, or the timestamp in the path for the throttle flag file. Well, you can do that!

You can use any configuration key as a template variable. Along with the configuration keys, we have added a few additional "magic helpers":

  • pid: the current process ID
  • timestamp: current seconds since epoch (as integer)
  • unique_id: random UUID
  • table: the table being migrated
  • database: the database the migration is being run against

Example

Setting the configuration using some "magic helpers":

config.ghost_adapter.throttle_flag_file = '/tmp/<%= table %>/<%= pid %>-<%= timestamp %>.throttle'

will result in a value like /tmp/things/29882-1617119851.throttle

Setting the configuration using your other config:

config.ghost_adapter.user = 'great_user'
config.ghost_adapter.panic_flag_file = '/tmp/<%= user %>.panic'

will result in a value like /tmp/great_user.panic

Configuration Methods