84 lines
2.5 KiB
Python
84 lines
2.5 KiB
Python
from __future__ import annotations
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import asyncio
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import time
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from typing import Any
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from app.cache import cache_get, cache_set, redis_available
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from app.config import (
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BRIGHTSKY_BASE_URL,
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CACHE_TTL_HEALTH_SOURCES,
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DATABASE_URL,
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DWD_RADAR_BASE_URL,
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DWD_WMS_URL,
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DWD_WARNINGS_URL,
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OPEN_METEO_BASE_URL,
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)
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from app.database import pool_available
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from app.http_client import get_client
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async def _probe(name: str, url: str, timeout: float = 5.0) -> dict[str, Any]:
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started = time.perf_counter()
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try:
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client = get_client()
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response = await client.get(url, timeout=timeout)
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elapsed_ms = round((time.perf_counter() - started) * 1000, 1)
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ok = response.status_code < 500
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return {
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"name": name,
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"url": url,
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"status": "ok" if ok else "degraded",
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"http_status": response.status_code,
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"latency_ms": elapsed_ms,
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}
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except Exception as exc:
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elapsed_ms = round((time.perf_counter() - started) * 1000, 1)
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return {
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"name": name,
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"url": url,
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"status": "error",
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"error": str(exc),
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"latency_ms": elapsed_ms,
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}
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async def check_sources() -> list[dict[str, Any]]:
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cache_key = "health:sources"
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cached = await cache_get(cache_key)
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if cached:
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return cached
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probes = await asyncio.gather(
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_probe("open_meteo", f"{OPEN_METEO_BASE_URL}/forecast?latitude=52.5&longitude=13.4¤t=temperature_2m"),
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_probe("brightsky", f"{BRIGHTSKY_BASE_URL}/current_weather?lat=52.5&lon=13.4"),
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_probe("dwd_radar", f"{DWD_RADAR_BASE_URL}/rv/", timeout=4.0),
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_probe(
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"dwd_wms",
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(
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f"{DWD_WMS_URL}?service=WMS&version=1.1.1&request=GetMap"
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"&layers=dwd:Niederschlagsradar&format=image/png&transparent=true"
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"&width=64&height=64&srs=EPSG:4326&bbox=8,50,9,51"
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),
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timeout=5.0,
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),
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_probe("dwd_warnings", DWD_WARNINGS_URL, timeout=4.0),
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)
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results = list(probes)
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results.append(
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{
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"name": "postgres",
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"url": DATABASE_URL.split("@")[-1],
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"status": "ok" if pool_available() else "disabled",
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}
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)
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results.append(
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{
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"name": "redis",
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"url": "redis",
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"status": "ok" if redis_available() else "disabled",
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}
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)
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await cache_set(cache_key, results, CACHE_TTL_HEALTH_SOURCES)
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return results
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