Question

尝试使用on_failure_callback发布到Slack。我下面有这个程序，我的默认dag args有

'on_failure_callback' : notify_slack_failure

当我的任务失败时，它将在/ tmp ..中创建输出，但是我的Slack消息未发布。当我通过命令行对其进行测试时，它将发布到Slack。对我想念的东西有什么想法吗？

def notify_slack_failure(context):
   """
   Define the callback to post on Slack if a failure is detected in the Workflow
   :return: operator.execute
   """

   cmd = "echo '" + getSlackToken() +"' > /tmp/a.out"
   os.system("touch /tmp/b.out")
   os.system(cmd)
   text_message='333'
   #text_message=str(context['task_instance'])

   operator = SlackAPIPostOperator(
      task_id='failure',
      text=text_message,
      token=getSlackToken(),
      channel=SLACK_CHANNEL,
      username=SLACK_USER
   )
   os.system("touch /tmp/e1.out")
   return operator.execute(context=context)

Answer 1

乔治-欢迎来到！尝试运行此代码。查看Airflow是否能够发布到Slack，以及写入tmp文件的代码是否将其弄乱了。

def notify_slack_failure(contextDictionary, **kwargs):  
   """
   Define the callback to post on Slack if a failure is detected in the Workflow
   :return: operator.execute
   """
   text_message='333'
   #text_message=str(context['task_instance'])

   operator= SlackAPIPostOperator(
      task_id='failure',
      token=getSlackToken(),
      text=text_message,
      channel=SLACK_CHANNEL,
      username=SLACK_USER,)
      return operator.execute

取自SO Slack Airflow answer

Answer 2

在命令行中，我定义了http_proxy变量，并且没有为守护进程设置它们。

气流on_failure_callback和SlackAPIPostOperator

2 个答案: