Script execution concept Opt. 1: Batch files

readme.md

Concept

• The algorithm is a script file, exposed to the framework as an importable module.
• The manifest and input/output params are stored globally.
• The algorithm is identified as module_name.

Pros

• With default values for the MANIFEST and DEF_IN_PARAMS, the script is extremely easy to write - see minimal.py.

Cons

• No visible encapsulation of the execution context - the use of global variables.
• The need to maintain DEF_IN_PARAMS-IN_PARAMS consistency is a potential source of errors.

load_clouds.py

from glob import glob
from os import cwd
from os.path import join, split, splitext
from frames import execute

MANIFEST = {                                                     # Declare the algorithm info.
  'doc': 'Loads all clouds of given format from the CWD.',
  'author': 'John Doe', 
  'version': '0.6',
  'multithreaded': False
}
DEF_IN_PARAMS['cloud_extension'] = 'copsxml'                     # Declare default input params.

if __name__ == '__main__':                                       # Run the script if it's not imported but executed.
  cloud_extension = IN_PARAMS['cloud_extension']                 # Fetch input params.
  cloud_ids = []
  
  for path in glob(join(cwd(), '*.'+cloud_extension)):
    name = split(splitext(path)[0])[-1]
    cloud_id = execute('import_cloud', path, name)
    cloud_ids.append(cloud_id)
  
  OUT_PARAMS['cloud_ids'] = cloud_ids                           # Form results

minimal.py

print 'Hello, framework.'