75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
from aws_lambda_powertools import Logger
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from aws_lambda_powertools.utilities.data_classes import (
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EventBridgeEvent,
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event_source,
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)
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from aws_lambda_powertools.utilities.typing import LambdaContext
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from layercake.dateutils import now, ttl
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from layercake.dynamodb import DynamoDBPersistenceLayer, KeyPair, SortKey
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from boto3clients import dynamodb_client
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from config import (
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ENROLLMENT_TABLE,
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)
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logger = Logger(__name__)
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dyn = DynamoDBPersistenceLayer(ENROLLMENT_TABLE, dynamodb_client)
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@event_source(data_class=EventBridgeEvent)
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@logger.inject_lambda_context
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def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
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new_image = event.detail['new_image']
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now_ = now()
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enrollment_id = new_image['id']
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user = new_image['user']
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course_name = new_image['course']['name']
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# Post-migration: after removing the stopgap file `patch_course_metadata.py`,
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# use `access_expires_at` from `new_image`
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access_period = int(
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dyn.collection.get_item(
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KeyPair(
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pk=new_image['course']['id'],
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sk=SortKey('0', path_spec='access_period'),
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),
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)
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)
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with dyn.transact_writer() as transact:
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transact.put(
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item={
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'id': enrollment_id,
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'sk': 'SCHEDULE#REMINDER_NO_ACCESS_AFTER_3_DAYS',
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'name': user['name'],
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'email': user['email'],
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'course': course_name,
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'created_at': now_,
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'ttl': ttl(start_dt=now_, days=3),
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},
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)
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# Schedule the event to add `access_expired` after the access period ends
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transact.put(
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item={
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'id': enrollment_id,
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'sk': 'SCHEDULE#SET_ACCESS_EXPIRED',
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'created_at': now_,
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'ttl': ttl(start_dt=now_, days=access_period),
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},
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)
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transact.put(
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item={
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'id': enrollment_id,
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'sk': 'SCHEDULE#REMINDER_ACCESS_PERIOD_BEFORE_30_DAYS',
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'name': user['name'],
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'email': user['email'],
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'course': course_name,
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'created_at': now_,
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'ttl': ttl(start_dt=now_, days=access_period - 30),
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},
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)
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return True
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