app.py 文件源码

def hears():
    """
    This route listens for incoming events from Slack and uses the event
    handler helper function to route events to our Bot.
    """
    slack_event = json.loads(request.data)

    # ============= Slack URL Verification ============ #
    # In order to verify the url of our endpoint, Slack will send a challenge
    # token in a request and check for this token in the response our endpoint
    # sends back.
    #       For more info: https://api.slack.com/events/url_verification
    if "challenge" in slack_event:
        return make_response(slack_event["challenge"], 200, {"content_type":
                                                             "application/json"
                                                             })

    # ============ Slack Token Verification =========== #
    # We can verify the request is coming from Slack by checking that the
    # verification token in the request matches our app's settings
    if pyBot.verification != slack_event.get("token"):
        message = "Invalid Slack verification token: %s \npyBot has: \
                   %s\n\n" % (slack_event["token"], pyBot.verification)
        # By adding "X-Slack-No-Retry" : 1 to our response headers, we turn off
        # Slack's automatic retries during development.
        make_response(message, 403, {"X-Slack-No-Retry": 1})

    # ====== Process Incoming Events from Slack ======= #
    # If the incoming request is an Event we've subcribed to
    if "event" in slack_event:
        event_type = slack_event["event"]["type"]
        # Then handle the event by event_type and have your bot respond
        return _event_handler(event_type, slack_event)
    # If our bot hears things that are not events we've subscribed to,
    # send a quirky but helpful error response
    return make_response("[NO EVENT IN SLACK REQUEST] These are not the droids\
                         you're looking for.", 404, {"X-Slack-No-Retry": 1})