kaxil commented on code in PR #62790: URL: https://github.com/apache/airflow/pull/62790#discussion_r3176969867
########## providers/ibm/mq/tests/system/ibm/mq/example_dag_message_queue_trigger.py: ########## @@ -0,0 +1,48 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +from __future__ import annotations + +# [START howto_trigger_message_queue] +from airflow.providers.common.messaging.triggers.msg_queue import MessageQueueTrigger +from airflow.sdk import DAG, Asset, AssetWatcher, task + +# Define a trigger that listens to an external message queue (IBM MQ in this case) +trigger = MessageQueueTrigger( + queue="ibmmq://mq_default/MY.QUEUE.NAME", +) + +mq_topic_asset = Asset( + "mq_topic_asset", + watchers=[AssetWatcher(name="mq_watcher", trigger=trigger)], +) + +with DAG(dag_id="example_ibm_mq_watcher", schedule=[mq_topic_asset]) as dag: + + @task + def process_message(**context): + for event in context["triggering_asset_events"][mq_topic_asset]: + # Get the message from the TriggerEvent payload + print("Processing event: ", event) + payload = event["payload"] Review Comment: Nope, not Claude or GPT issue, I verified it before posting, unless I am doing something wrong though (which is possible) .. Your working code uses `event.extra["payload"]` (attribute then subscript), but the example DAG in the PR uses `event["payload"]` (direct subscript on the event). Different access patterns -- only the first works. ```text type(event): AssetEventDagRunReferenceResult event.extra['payload']: <map>...</map> Now trying example DAG pattern: event['payload'] TypeError: 'AssetEventDagRunReferenceResult' object is not subscriptable ``` `AssetEventDagRunReferenceResult` is a Pydantic `BaseModel` with no `__getitem__` override, so `event["payload"]` raises on the first message. ```suggestion payload = event.extra["payload"] ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
