df2e410f2a
Deprecated rake functions issue a warning and then call paver replacements Bring Paver commands up to date with master for servers, assets, and docs. Revert deprecation of quality, tests, and i18n for a future pull request. Deprecate workspace migration
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
"""
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Helper functions for loading environment settings.
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"""
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import os
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import sys
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import json
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from lazy import lazy
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from path import path
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class Env(object):
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"""
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Load information about the execution environment.
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"""
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# Root of the git repository (edx-platform)
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REPO_ROOT = path(__file__).dirname().dirname().dirname()
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# Service variant (lms, cms, etc.) configured with an environment variable
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# We use this to determine which envs.json file to load.
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SERVICE_VARIANT = os.environ.get('SERVICE_VARIANT', None)
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@lazy
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def env_tokens(self):
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"""
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Return a dict of environment settings.
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If we couldn't find the JSON file, issue a warning and return an empty dict.
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"""
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# Find the env JSON file
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env_path = "env.json"
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if self.SERVICE_VARIANT is not None:
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env_path = self.REPO_ROOT.dirname() / "{service}.env.json".format(service=self.SERVICE_VARIANT)
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# If the file does not exist, issue a warning and return an empty dict
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if not os.path.isfile(env_path):
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print "Warning: could not find environment JSON file at '{path}'".format(path=env_path)
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return dict()
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# Otherwise, load the file as JSON and return the resulting dict
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try:
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with open(env_path) as env_file:
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return json.load(env_file)
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except ValueError:
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print "Error: Could not parse JSON in {path}".format(path=env_path)
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sys.exit(1)
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@lazy
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def feature_flags(self):
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"""
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Return a dictionary of feature flags configured by the environment.
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"""
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return self.env_tokens.get('FEATURES', dict())
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