60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
from uuid import uuid4
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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
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from layercake.dynamodb import DynamoDBPersistenceLayer, KeyPair
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from boto3clients import dynamodb_client
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from config import ENROLLMENT_TABLE, ORDER_TABLE
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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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old_image = event.detail['old_image']
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order_id = old_image['seat']['order_id']
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enrollment_id = old_image['enrollment_id']
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*_, org_id = old_image['id'].split('#')
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now_ = now()
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with dyn.transact_writer() as transact:
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transact.update(
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key=KeyPair(
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pk=order_id,
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sk=f'ENROLLMENT#{enrollment_id}',
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table_name=ORDER_TABLE,
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),
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cond_expr='attribute_exists(sk) AND #status = :scheduled',
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update_expr='SET #status = :rollback, \
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rollback_at = :now, \
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reason = :reason',
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expr_attr_names={
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'#status': 'status',
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},
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expr_attr_values={
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':rollback': 'ROLLBACK',
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':scheduled': 'SCHEDULED',
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':reason': 'UNSCHEDULED',
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':now': now_,
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},
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table_name=ORDER_TABLE,
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)
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transact.put(
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item={
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'id': f'SEAT#ORG#{org_id}',
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'sk': f'ORDER#{order_id}#ENROLLMENT#{uuid4()}',
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'course': old_image['course'],
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'created_at': now_,
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}
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)
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return True
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