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Merge pull request #51 from unity-sds/50-event-based-triggering
S3 event-based triggering of SBG DAG
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| import logging | ||
| import os | ||
| import uuid | ||
| from datetime import datetime | ||
| from typing import List | ||
| from urllib.parse import unquote_plus | ||
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| import requests | ||
| from aws_lambda_powertools.utilities.parser import envelopes, event_parser | ||
| from aws_lambda_powertools.utilities.parser.models import S3Model | ||
| from aws_lambda_powertools.utilities.typing import LambdaContext | ||
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| logger = logging.getLogger() | ||
| logger.setLevel(logging.INFO) | ||
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| AIRFLOW_BASE_API_ENDPOINT = os.environ.get("AIRFLOW_BASE_API_ENDPOINT") | ||
| AIRFLOW_USERNAME = os.environ.get("AIRFLOW_USERNAME") | ||
| AIRFLOW_PASSWORD = os.environ.get("AIRFLOW_PASSWORD") | ||
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| def trigger_airflow_dag(dag_id: str): | ||
| url = f"{AIRFLOW_BASE_API_ENDPOINT}/dags/{dag_id}/dagRuns" | ||
| dag_run_id = str(uuid.uuid4()) | ||
| logical_date = datetime.now().strftime("%Y-%m-%dT%H:%M:%S.%fZ") | ||
| headers = {"Content-Type": "application/json", "Accept": "application/json"} | ||
| auth = (AIRFLOW_USERNAME, AIRFLOW_PASSWORD) | ||
| payload = {"dag_run_id": dag_run_id, "logical_date": logical_date, "conf": {}, "note": ""} | ||
| response = requests.post(url, auth=auth, headers=headers, json=payload) | ||
| if response.status_code == 200 or response.status_code == 201: | ||
| logger.info(f"Successfully triggered Airflow DAG {dag_id}: {response.json()}") | ||
| else: | ||
| logger.error(f"Failed to trigger Airflow DAG {dag_id}: {response.text}") | ||
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| @event_parser(model=S3Model, envelope=envelopes.SnsSqsEnvelope) | ||
| def lambda_handler(event: List[S3Model], context: LambdaContext) -> dict: | ||
| try: | ||
| object_key = unquote_plus(event[0].Records[0].s3.object.key) | ||
| bucket_name = unquote_plus(event[0].Records[0].s3.bucket.name) | ||
| logger.info(f"Source bucket: {bucket_name}, Source key: {object_key}") | ||
| dag_id = "sbg-l1-to-l2-e2e-cwl-step-by-step-dag" | ||
| trigger_airflow_dag(dag_id) | ||
| except Exception as e: | ||
| logger.error(f"An unexpected error occurred: {e}") | ||
| return {"statusCode": 500, "body": "An unexpected error occurred: " + str(e)} | ||
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| return {"statusCode": 200, "body": "Success!"} |
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