SlackWebhookNotifier (notifications/slack.py)

Sends formatted Slack notifications via incoming webhook for event alerts.

# Source: https://github.com/greyhaven-ai/autocontext | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
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"""Slack incoming webhook notifier."""

from __future__ import annotations

import json
import logging
import urllib.error
import urllib.request

from autocontext.notifications.base import EventType, NotificationEvent, Notifier
from autocontext.offline import require_online

logger = logging.getLogger(__name__)


class SlackWebhookNotifier(Notifier):
    """Sends notifications to a Slack incoming webhook.

    Formats events as Slack-friendly messages with emoji and structure.
    """

    def __init__(self, webhook_url: str, channel: str | None = None, timeout: float = 10.0) -> No

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