Hey @Marvin, I implemented below function in prefect 2 to send messages to slack. However, they don't work anymore in prefect 3. How can I send slack messages from flow context in prefect 3?

def notify_slack_channel(
    flow_context,
    channel,
    message="completed without issues",
    status_emoji=":white_check_mark:",
):
    ACCOUNT_ID, WORKSPACE_ID = read_prefect_secrets()
    flow_run_id = flow_context.flow_run.id
    flow_name = flow_context.flow.name
    flow_run_url = f"{BASE_URL}/account/{ACCOUNT_ID}/workspace/{WORKSPACE_ID}/runs/flow-run/{flow_run_id}"
    flow_run_link = f"<{flow_run_url}|'{flow_context.flow_run.name}'>"

    send_chat_message(
        slack_credentials=slack_credentials_block,
        channel=f"#{channel}",
        text=f"{status_emoji} `flexa-{flow_name}`: {flow_run_link} {message}",
    )

To send messages to Slack from within Prefect 3, you'll want to utilize the

prefect-slack

collection, which provides a set of prebuilt tasks for this purpose. Here's a quick guide on how you can achieve similar functionality in Prefect 3: 1. Install the Prefect Slack Integration: Ensure that you have the

prefect-slack

package installed. You can do this by running:

pip install prefect-slack

2. Create a Slack App: Since sending messages requires interaction with the Slack API, you'll need a Slack app with appropriate permissions. You can create a Slack app through your Slack account, ensuring to get a Bot user OAuth token for API access. 3. Configure Prefect Slack Task: Use the prebuilt Slack tasks to send messages. Here's an example of how you might structure your flow:

python
   from prefect import flow
   from prefect_slack import SlackTask

   @flow
   def my_flow():
       slack_task = SlackTask(token="<YOUR_SLACK_TOKEN>")
       slack_task.run(
           channel="<YOUR_CHANNEL>",
           text="Flow run completed successfully!"
       )

   if __name__ == "__main__":
       my_flow()

4. Run Your Flow: Execute your flow as usual, and it should send a message to your specified Slack channel. For more detailed information, you can explore the Prefect Slack integration documentation. If you're encountering issues, ensure your

PREFECT_API_URL

and

PREFECT_API_KEY

are correctly set up as per this troubleshooting guide. Remember, even robots can get lonely, so let your code keep those Slack channels lively and informed!

Does prefect 3 not support slack blocks anymore?

To use

prefect-slack

with Prefect 3, make sure you have the latest version of

prefect-slack

installed that supports Prefect 3.x. Unfortunately, the exact version is not explicitly documented in the immediate search results, but typically, installing the latest version using the following command should suffice:

bash
pip install prefect-slack

The

prefect-slack

GitHub repository is actively maintained, so you should be using a version that aligns with the enhancements made for Prefect 3. Keep an eye on its release notes for the most recent updates and compatibility confirmations. If you're like most of us who can't remember what code used to run properly, you might want to ensure the Slack app configurations are also updated alongside your Prefect version adjustments. Just go with the flow—pun intended!

@Nate or so, this doesn't seem right

this should be right

the slack code that worked in prefect 2 seems to not work anymore in prefect 3

yeah that appears to be a hallucination on marvin's part

slack.py

ah

OK, I tried that but wasn't successful, will go down deeper that road, thanks!

send_chat_message

is just an

async

task, and yes the

SlackCredentials

block should still work