fix

order-management/app/events/assign_tenant_cpf.py

@@ -1,23 +0,0 @@
-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 (
-    DynamoDBPersistenceLayer,
-)
-
-from boto3clients import dynamodb_client
-from config import ORDER_TABLE, USER_TABLE
-
-logger = Logger(__name__)
-user_layer = DynamoDBPersistenceLayer(USER_TABLE, dynamodb_client)
-order_layer = DynamoDBPersistenceLayer(ORDER_TABLE, dynamodb_client)
-
-
-@event_source(data_class=EventBridgeEvent)
-@logger.inject_lambda_context
-def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
-    new_image = event.detail['new_image']
-    return True

order-management/app/events/remove_slots_on_canceled.py

@@ -0,0 +1,57 @@
+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']
+    tenant_id = order_layer.collection.get_item(
+        KeyPair(
+            order_id,
+            SortKey('metadata#tenant', path_spec='tenant_id'),
+        ),
+        exc_cls=TenantDoesNotExistError,
+    )
+
+    result = enrollment_layer.collection.query(
+        KeyPair(
+            # Post-migration: rename `vacancies` to `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`
+                    'id': {'S': ComposeKey(pair['id'], prefix='vacancies')},
+                    'sk': {'S': pair['sk']},
+                }
+            )
+
+    return True

order-management/app/events/stopgap/__init__.py

@@ -0,0 +1,4 @@
+"""
+Stopgap events. Everything here is a quick fix and should be replaced with
+proper solutions.
+"""

order-management/app/events/stopgap/remove_slots.py

@@ -0,0 +1,71 @@
+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,
+    TransactKey,
+)
+
+from boto3clients import dynamodb_client
+from config import ENROLLMENT_TABLE, ORDER_TABLE, USER_TABLE
+
+logger = Logger(__name__)
+user_layer = DynamoDBPersistenceLayer(USER_TABLE, dynamodb_client)
+order_layer = DynamoDBPersistenceLayer(ORDER_TABLE, dynamodb_client)
+enrollment_layer = DynamoDBPersistenceLayer(ENROLLMENT_TABLE, dynamodb_client)
+
+
+@event_source(data_class=EventBridgeEvent)
+@logger.inject_lambda_context
+def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
+    """Remove slots if the Tenant has a `metadata#billing_policy` and
+    the order is positive."""
+    new_image = event.detail['new_image']
+    order_id = new_image['id']
+    data = order_layer.collection.get_items(
+        TransactKey(order_id)
+        + SortKey('0')
+        + KeyPair(
+            pk=order_id,
+            sk=SortKey(
+                sk='metadata#tenant',
+                path_spec='tenant_id',
+                remove_prefix='metadata#',
+            ),
+            rename_key='tenant_id',
+        )
+    )
+    tenant_id = data['tenant_id'].removeprefix('ORG#')
+
+    policy = user_layer.collection.get_item(
+        KeyPair(pk=tenant_id, sk='metadata#billing_policy'),
+        raise_on_error=False,
+        default=False,
+    )
+
+    # Skip if missing billing policy or order is zero/negative
+    if not policy or data['total'] <= 0:
+        return False
+
+    result = enrollment_layer.collection.query(
+        KeyPair(
+            ComposeKey(tenant_id, prefix='vacancies'),
+            order_id,
+        )
+    )
+    with enrollment_layer.batch_writer() as batch:
+        for pair in result['items']:
+            batch.delete_item(
+                Key={
+                    'id': {'S': ComposeKey(pair['id'], prefix='vacancies')},
+                    'sk': {'S': pair['sk']},
+                }
+            )
+
+    return True