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Support METEOR_SETTINGS env var, as well as introduce METEOR_PUBLIC_ENVS var.

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This commit is contained in:
Tyson Clugg 2015-11-05 11:41:00 +11:00
parent b4c068b28c
commit bc9afefadd
1 changed files with 59 additions and 1 deletions
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60
dddp/views.py
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@ -1,6 +1,7 @@
"""Django DDP Server views."""
from __future__ import absolute_import, unicode_literals
from copy import deepcopy
import io
import logging
import mimetypes
@ -14,6 +15,22 @@ from django.views.generic import View
import pybars
# from https://www.xormedia.com/recursively-merge-dictionaries-in-python/
def dict_merge(a, b):
'''recursively merges dict's. not just simple a['key'] = b['key'], if
both a and bhave a key who's value is a dict then dict_merge is called
on both values and the result stored in the returned dictionary.'''
if not isinstance(b, dict):
return b
result = deepcopy(a)
for k, v in b.iteritems():
if k in result and isinstance(result[k], dict):
result[k] = dict_merge(result[k], v)
else:
result[k] = deepcopy(v)
return result
def read(path, default=None, encoding='utf8'):
"""Read encoded contents from specified path or return default."""
if not path:
@ -56,12 +73,52 @@ class MeteorView(View):
client_map = None # web.browser (client) URL to path map
html = '<!DOCTYPE html>\n<html><head><title>DDP App</title></head></html>'
meteor_settings = None
meteor_public_envs = None
root_url_path_prefix = ''
bundled_js_css_prefix = '/'
def __init__(self, **kwargs):
"""Initialisation for Django DDP server view."""
"""
Initialisation for Django DDP server view.
`Meteor.settings` is sourced from the following (later take precedence):
1. django.conf.settings.METEOR_SETTINGS
2. os.environ['METEOR_SETTINGS']
3. MeteorView.meteor_settings (class attribute) or empty dict
4. MeteorView.as_view(meteor_settings=...)
Additionally, `Meteor.settings.public` is updated with values from
environemnt variables specified from the following sources:
1. django.conf.settings.METEOR_PUBLIC_ENVS
2. os.environ['METEOR_PUBLIC_ENVS']
3. MeteorView.meteor_public_envs (class attribute) or empty dict
4. MeteorView.as_view(meteor_public_envs=...)
"""
self.runtime_config = {}
self.meteor_settings = reduce(
dict_merge,
[
getattr(settings, 'METEOR_SETTINGS', {}),
loads(os.environ.get('METEOR_SETTINGS', '{}')),
self.meteor_settings or {},
kwargs.pop('meteor_settings', {}),
],
{},
)
self.meteor_public_envs = set()
self.meteor_public_envs.update(
getattr(settings, 'METEOR_PUBLIC_ENVS', []),
os.environ.get('METEOR_PUBLIC_ENVS', '').replace(',', ' ').split(),
self.meteor_public_envs or [],
kwargs.pop('meteor_public_envs', []),
)
public = self.meteor_settings.setdefault('public', {})
for env_name in self.meteor_public_envs:
try:
public[env_name] = os.environ[env_name]
except KeyError:
pass # environment variable not set
# super(...).__init__ assigns kwargs to instance.
super(MeteorView, self).__init__(**kwargs)
@ -203,6 +260,7 @@ class MeteorView(View):
if path == 'meteor_runtime_config.js':
config = {
'DDP_DEFAULT_CONNECTION_URL': request.build_absolute_uri('/'),
'PUBLIC_SETTINGS': self.meteor_settings.get('public', {}),
'ROOT_URL': request.build_absolute_uri(
'%s/' % self.runtime_config.get('ROOT_URL_PATH_PREFIX', ''),
),