Implement Monlet MVP stack and UI updates

server/monlet_server/services/notifiers/telegram.py

@@ -0,0 +1,47 @@
+from __future__ import annotations
+
+import httpx
+
+from ...redaction import redact
+from .base import DeliveryResult
+from .http import classify_response
+
+
+def _format_message(event_type: str, payload: dict) -> str:
+    icon = "[FIRING]" if event_type == "firing" else "[RESOLVED]"
+    sev = payload.get("severity", "unknown")
+    agent = payload.get("agent_id", "?")
+    check = payload.get("check_id", "?")
+    status = payload.get("status", "?")
+    incident_key = payload.get("incident_key", "?")
+    output = payload.get("output") or ""
+    lines = [
+        f"{icon} {sev} {agent}/{check}",
+        f"status: {status}",
+        f"incident_key: {incident_key}",
+        f"observed_at: {payload.get('observed_at', '?')}",
+    ]
+    if output:
+        lines.append(f"output: {output[:300]}")
+    return redact("\n".join(lines)) or ""
+
+
+class TelegramNotifier:
+    name = "telegram"
+
+    def __init__(self, client: httpx.AsyncClient, token: str, chat_id: str) -> None:
+        self._client = client
+        self._token = token
+        self._chat_id = chat_id
+
+    async def deliver(self, event_type: str, payload: dict) -> DeliveryResult:
+        url = f"https://api.telegram.org/bot{self._token}/sendMessage"
+        body = {"chat_id": self._chat_id, "text": _format_message(event_type, payload)}
+        try:
+            resp = await self._client.post(url, json=body)
+        except httpx.HTTPError as exc:
+            return DeliveryResult(ok=False, permanent=False, error=type(exc).__name__)
+        ok, perm = classify_response(resp.status_code)
+        if ok:
+            return DeliveryResult(ok=True)
+        return DeliveryResult(ok=False, permanent=perm, error=f"http_{resp.status_code}")