feat(feature_flag): Provide user with ability to override feature flags
ref: #693 #493 #575
This commit is contained in:
@ -69,6 +69,7 @@ CELERY_TASK_SEND_SENT_EVENT = True
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CELERY_WORKER_SEND_TASK_EVENTS = True # worker_send_task_events
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FEATURE_FLAGGING_ENABLED = True # Turn Feature Flagging on/off
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FEATURE_FLAG_OVERRIDES = None # Feature Flags to override fetched feature flags
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# PROMETHEUS_METRICS_EXPORT_PORT_RANGE = range(8010, 8010)
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# PROMETHEUS_METRICS_EXPORT_PORT = 8010
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@ -488,5 +489,12 @@ if FEATURE_FLAGGING_ENABLED:
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'cache_dir': str(BASE_DIR) + '/',
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'disable_downloading': False,
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'unique_id': unique_id,
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'version': feature_flag_version
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'version': feature_flag_version,
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}
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if FEATURE_FLAG_OVERRIDES:
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feature_flag.update({
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'over_rides': FEATURE_FLAG_OVERRIDES
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})
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@ -14,6 +14,7 @@ feature_flag = {
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'disable_downloading': False # Prevent downloading feature flags
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'unique_id': 'unique ID for application', # Unique ID for this instance of your Django application
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'version': '1.0.0', # The Version of Your Django Application
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'over_rides': [] # list(dict). Feature Flag over rides. use same format as API endpoint.
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} # Note: All key values are strings
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```
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@ -76,6 +76,9 @@ class CenturionFeatureFlagging:
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_last_modified: datetime = None
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""" Last modified date/time of the feature flags"""
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_over_rides: dict = None
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"""Feature Flag Over rides."""
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_response: requests.Response = None
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"""Cached response from fetched feature flags"""
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@ -95,6 +98,7 @@ class CenturionFeatureFlagging:
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disable_downloading: bool = False,
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unique_id: str = None,
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version: str = None,
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over_rides: dict = None,
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):
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if not str(cache_dir).endswith('/'):
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@ -108,6 +112,21 @@ class CenturionFeatureFlagging:
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self._disable_downloading = disable_downloading
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if over_rides:
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_over_rides: dict = {}
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for entry in over_rides:
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[*key], [*flag] = zip(*entry.items())
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_over_rides.update({
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key[0]: FeatureFlag(key[0], flag[0])
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})
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self._over_rides = _over_rides
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if version is None:
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@ -174,6 +193,7 @@ class CenturionFeatureFlagging:
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if(
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self._feature_flags.get(key, None) is None
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and self._over_rides.get(key, None) is None
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and raise_exceptions
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):
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@ -182,10 +202,19 @@ class CenturionFeatureFlagging:
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elif(
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not raise_exceptions
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and self._feature_flags.get(key, None) is None
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and self._over_rides.get(key, None) is None
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):
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return False
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elif(
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not raise_exceptions
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and self._over_rides.get(key, None) is not None
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):
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return self._over_rides[key]
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return self._feature_flags[key]
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@ -27,6 +27,7 @@ class Command(BaseCommand):
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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self.stdout.write('Fetching Feature Flags.....')
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@ -21,6 +21,7 @@ class FeatureFlagMiddleware:
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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@ -24,6 +24,7 @@ if getattr(settings,'feature_flag', None):
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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_feature_flagging.get()
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@ -55,6 +55,7 @@ class APIRootView(
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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@ -77,6 +78,7 @@ class SimpleRouter(
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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self._feature_flagging.get()
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@ -103,6 +105,7 @@ class DefaultRouter(
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disable_downloading = settings.feature_flag.get('disable_downloading', False),
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unique_id = settings.feature_flag.get('unique_id', None),
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version = settings.feature_flag.get('version', None),
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over_rides = settings.feature_flag.get('over_rides', None),
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)
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self._feature_flagging.get()
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@ -30,4 +30,5 @@ Within your settings file the following settings are available
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| Attribute | Type | Default | Description |
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|:---|:---:|:---:|:---|
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| FEATURE_FLAGGING_ENABLED | `Bolean` | `True `| Turn feature flagging on/off |
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| FEATURE_FLAGGING_ENABLED | `Boolean` | `True `| Turn feature flagging on/off. |
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| FEATURE_FLAG_OVERRIDES | `list(dict)` | `None` | Feature Flags to override. Uses same format as the API Enbdpoint. |
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@ -31,6 +31,8 @@ DATABASES = {
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FEATURE_FLAGGING_ENABLED = True # Turn Feature Flagging on/off
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FEATURE_FLAG_OVERRIDES = [] # Feature Flag Overrides. Takes preceedence over downloaded feature flags.
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SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
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SECURE_SSL_REDIRECT = True
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