SlackAPIPostOperator中的Airflow UI链接？

pip install apache-airflow-providers-slack

from airflow import DAG
from airflow.providers.slack.operators.slack import SlackAPIPostOperator
from airflow.utils.dates import days_ago

default_args = {
    'owner': 'airflow',
    'start_date': days_ago(1),
}

dag = DAG(
    'slack_example',
    default_args=default_args,
    description='A simple Slack API Post Operator example',
    schedule_interval=None,
)

slack_message = SlackAPIPostOperator(
    task_id='slack_message_task',
    token='xoxb-your-token',
    channel='#your-channel',
    text='Hello from Airflow! Check out the UI at: {{task_instance.xcom_pull("task_id")}}',
    dag=dag,
)

# 设置要拉取的上一个任务的结果
task_id = SlackAPIPostOperator(
    task_id='task_id',
    token='xoxb-your-token',
    channel='#your-channel',
    text='Task executed successfully!',
    dag=dag,
)

slack_message.set_upstream(task_id)