feat: add MACP event bridge — watcher, webhook, Discord formatter

tools/orchestrator-matrix/events/webhook_adapter.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+"""Webhook delivery helpers for MACP events."""
+
+from __future__ import annotations
+
+import json
+import sys
+import time
+import urllib.error
+import urllib.request
+from collections.abc import Callable
+from typing import Any
+
+
+def _warn(message: str) -> None:
+    print(f"[macp-webhook] {message}", file=sys.stderr)
+
+
+def _webhook_config(config: dict[str, Any]) -> dict[str, Any]:
+    macp = config.get("macp")
+    if isinstance(macp, dict) and isinstance(macp.get("webhook"), dict):
+        return dict(macp["webhook"])
+    return dict(config)
+
+
+def send_webhook(event: dict[str, Any], config: dict[str, Any]) -> bool:
+    """POST event to webhook URL. Returns True on success."""
+
+    webhook = _webhook_config(config)
+    url = str(webhook.get("url") or "").strip()
+    if not url:
+        _warn("missing webhook url")
+        return False
+
+    timeout_seconds = max(1.0, float(webhook.get("timeout_seconds") or 10))
+    retry_count = max(0, int(webhook.get("retry_count") or 0))
+    auth_token = str(webhook.get("auth_token") or "").strip()
+    payload = json.dumps(event, ensure_ascii=True).encode("utf-8")
+    headers = {"Content-Type": "application/json"}
+    if auth_token:
+        headers["Authorization"] = f"Bearer {auth_token}"
+
+    attempts = retry_count + 1
+    for attempt in range(1, attempts + 1):
+        request = urllib.request.Request(url, data=payload, headers=headers, method="POST")
+        try:
+            with urllib.request.urlopen(request, timeout=timeout_seconds) as response:
+                status = getattr(response, "status", response.getcode())
+                if 200 <= int(status) < 300:
+                    return True
+                _warn(f"webhook returned HTTP {status} on attempt {attempt}/{attempts}")
+        except (urllib.error.HTTPError, urllib.error.URLError, TimeoutError, ValueError) as exc:
+            _warn(f"webhook attempt {attempt}/{attempts} failed: {exc}")
+        if attempt < attempts:
+            time.sleep(min(timeout_seconds, 2 ** (attempt - 1)))
+    return False
+
+
+def create_webhook_callback(config: dict[str, Any]) -> Callable[[dict[str, Any]], None]:
+    """Factory that creates a watcher callback from config."""
+
+    def callback(event: dict[str, Any]) -> None:
+        if not send_webhook(event, config):
+            _warn(f"delivery failed for event {event.get('event_type', '<unknown>')}")
+
+    return callback