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e18c302 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | from aws_lambda_powertools.utilities.feature_flags import AppConfigStore, FeatureFlags
from aws_lambda_powertools.utilities.typing import LambdaContext
app_config = AppConfigStore(environment="dev", application="product-catalogue", name="features")
feature_flags = FeatureFlags(store=app_config)
def lambda_handler(event: dict, context: LambdaContext):
"""
This feature flag is enabled under the following conditions:
- The request payload contains a field 'tier' with the value 'premium'.
- If the current day is either Saturday or Sunday in America/New_York timezone.
Rule condition to be evaluated:
"conditions": [
{
"action": "EQUALS",
"key": "tier",
"value": "premium"
},
{
"action": "SCHEDULE_BETWEEN_DAYS_OF_WEEK",
"key": "CURRENT_DAY_OF_WEEK",
"value": {
"DAYS": [
"SATURDAY",
"SUNDAY"
],
"TIMEZONE": "America/New_York"
}
}
]
"""
# Get customer's tier from incoming request
ctx = {"tier": event.get("tier", "standard")}
# Checking if the weekend premum discount is enable
weekend_premium_discount = feature_flags.evaluate(name="weekend_premium_discount", default=False, context=ctx)
if weekend_premium_discount:
# Enable special discount on weekend for premium users:
return {"message": "The weekend premium discount is enabled."}
return {"message": "The weekend premium discount is not enabled."}
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