Page Comparison

You can read the introduction here: Input Preprocessor

1. Create the script mentioned in the chimera_config.yaml file under the preprocessor.module_path.

2. In the script, declare the subclass mentioned in the chimera_config.yaml file under the preprocessor.class_name

3. Start with the following code snippet:
   

   Code Block
   language py
   # import the parent class from chimera from chimera.precondition_functions import PreConditionFunctions # declare the sub class class <class_name>(PreConditionFunctions): def __init__(self, context, pge_config, settings, job_params): PreConditionFunctions.__init__(self, context, pge_config, settings, job_params)

   The variables you have available throughout this subclass are:

   • Context - contents of _context.json of the SciFlo job. You can access it as self._context in the precondition functions

   • PGE’s configuration - contents of the respective PGE’s configuration file. Can be accessed as self._pge_config

   • Settings file - content of settings.yaml file accessible as self._settings

   • Job Params - This is a dictionary that stores all the information gathered during preconditions evaluation. How to utilize it will be described soon. It can be accessed as self._job_params

...