fix

order-events/app/events/remove_slots_if_canceled.py

@@ -0,0 +1,63 @@
+from aws_lambda_powertools import Logger
+from aws_lambda_powertools.utilities.data_classes import (
+    EventBridgeEvent,
+    event_source,
+)
+from aws_lambda_powertools.utilities.typing import LambdaContext
+from layercake.dynamodb import (
+    ComposeKey,
+    DynamoDBPersistenceLayer,
+    KeyPair,
+    SortKey,
+)
+
+from boto3clients import dynamodb_client
+from config import ENROLLMENT_TABLE, ORDER_TABLE
+
+logger = Logger(__name__)
+enrollment_layer = DynamoDBPersistenceLayer(ENROLLMENT_TABLE, dynamodb_client)
+order_layer = DynamoDBPersistenceLayer(ORDER_TABLE, dynamodb_client)
+
+
+class TenantDoesNotExistError(Exception):
+    def __init__(self, *args):
+        super().__init__('Tenant does not exist')
+
+
+@event_source(data_class=EventBridgeEvent)
+@logger.inject_lambda_context
+def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
+    new_image = event.detail['new_image']
+    order_id = new_image['id']
+    # Post-migration: remove the following line
+    tenant_id = order_layer.collection.get_item(
+        KeyPair(
+            order_id,
+            SortKey('metadata#tenant', path_spec='tenant_id'),
+        ),
+        exc_cls=TenantDoesNotExistError,
+    ).removeprefix('ORG#')
+
+    # Post-migration: uncomment the following line
+    # tenant_id = new_image['tenant']
+
+    result = enrollment_layer.collection.query(
+        KeyPair(
+            # Post-migration: uncomment the following line
+            # ComposeKey(tenant_id, prefix='slots'),
+            ComposeKey(tenant_id, prefix='vacancies'),
+            order_id,
+        )
+    )
+
+    with enrollment_layer.batch_writer() as batch:
+        for pair in result['items']:
+            batch.delete_item(
+                Key={
+                    # Post-migration: rename `vacancies` to `slots#org`
+                    'id': {'S': ComposeKey(pair['id'], prefix='vacancies')},
+                    'sk': {'S': pair['sk']},
+                }
+            )
+
+    return True