如何将Apache Airflow与Slack集成在一起？

Question

有人可以给我逐步指南，介绍如何将Apache Airflow连接到Slack工作区。我为频道创建了webhook，接下来该怎么做？

亲切的问候

Answer 1

• 从https://api.slack.com/custom-integrations/legacy-tokens创建一个Slack令牌
• 如下使用SlackAPIPostOperatorDAG中的运算符

SlackAPIPostOperator(
      task_id='failure',
      token='YOUR_TOKEN',
      text=text_message,
      channel=SLACK_CHANNEL,
      username=SLACK_USER)

上面是使用Airflow向Slack发送消息的最简单方法。

但是，如果要配置Airflow在任务失败时向Slack发送消息，请创建一个函数，并on_failure_callback使用创建的slack函数的名称添加到您的任务中。下面是一个示例：

def slack_failed_task(contextDictionary, **kwargs):  
       failed_alert = SlackAPIPostOperator(
         task_id='slack_failed',
         channel="#datalabs",
         token="...",
         text = ':red_circle: DAG Failed',
         owner = '_owner',)
         return failed_alert.execute


task_with_failed_slack_alerts = PythonOperator(
    task_id='task0',
    python_callable=<file to execute>,
    on_failure_callback=slack_failed_task,
    provide_context=True,
    dag=dag)

使用SlackWebHook（仅适用于气流> = 1.10.0的情况）：如果要以类似方式使用SlackWebHookuse SlackWebhookOperator：

https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/operators/slack_webhook_operator.py#L25

Answer 2

尝试新的SlackWebhookOperator，它在 Airflow 版本>=1.10.0 中有

from airflow.contrib.operators.slack_webhook_operator import SlackWebhookOperator

slack_msg = "Hi Wssup?"

slack_test =  SlackWebhookOperator(
        task_id='slack_test',
        http_conn_id='slack_connection',
        webhook_token='/1234/abcd',
        message=slack_msg,
        channel='#airflow_updates',
        username='airflow_'+os.environ['ENVIRONMENT'],
        icon_emoji=None,
        link_names=False,
        dag=dag)

注意：确保您已将slack_connectionAirflow 连接添加为

host=https://hooks.slack.com/services/

Answer 3

SlackWebhookOperator在@kaxil 答案中使用的完整示例：

def slack_failed_task(task_name):
  failed_alert = SlackWebhookOperator(
    task_id='slack_failed_alert',
    http_conn_id='slack_connection',
    webhook_token=Variable.get("slackWebhookToken", default_var=""),
    message='@here DAG Failed {}'.format(task_name),
    channel='#epm-marketing-dev',
    username='Airflow_{}'.format(ENVIRONMENT_SUFFIX),
    icon_emoji=':red_circle:',
    link_names=True,
  )
  return failed_alert.execute

task_with_failed_slack_alerts = PythonOperator(
  task_id='task0',
  python_callable=<file to execute>,
  on_failure_callback=slack_failed_task,
  provide_context=True,
  dag=dag)

正如@Deep Nirmal 注意：确保您在 Airflow 连接中添加了 slack_connection 作为

host=https://hooks.slack.com/services/