67 lines
2 KiB
Python
67 lines
2 KiB
Python
#!/usr/bin/env python3
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import os
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import sys
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import urllib.request
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import urllib.error
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from datetime import datetime, timezone
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from pathlib import Path
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def load_url_from_config():
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config_file = Path.home() / ".config" / "health-monitor"
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if config_file.exists():
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for line in config_file.read_text().splitlines():
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if line.startswith("HEALTHCHECK_URL="):
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return line.split("=", 1)[1].strip()
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return None
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def ping(url: str, timeout: int) -> int:
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req = urllib.request.Request(url, method="GET", headers={"User-Agent": "health-monitor/1.0"})
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with urllib.request.urlopen(req, timeout=timeout) as response:
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return response.getcode()
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def ping_fail(url: str, timeout: int) -> None:
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fail_url = url.rstrip("/") + "/fail"
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try:
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req = urllib.request.Request(fail_url, method="GET", headers={"User-Agent": "health-monitor/1.0"})
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urllib.request.urlopen(req, timeout=timeout)
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except Exception:
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pass
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def main():
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url = sys.argv[1] if len(sys.argv) > 1 else os.environ.get("HEALTHCHECK_URL") or load_url_from_config()
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if not url:
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print("ERROR: HEALTHCHECK_URL not set", file=sys.stderr)
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return 1
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timeout = int(os.environ.get("HEALTHCHECK_TIMEOUT", 10))
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try:
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status = ping(url, timeout)
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if 200 <= status < 300:
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print(f"{datetime.now(timezone.utc).isoformat()} status={status} url={url}")
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return 0
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print(f"ERROR: HTTP {status} url={url}", file=sys.stderr)
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ping_fail(url, timeout)
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return 2
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except urllib.error.HTTPError as exc:
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print(f"HTTPError {exc.code} {exc.reason} url={url}", file=sys.stderr)
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ping_fail(url, timeout)
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return 3
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except urllib.error.URLError as exc:
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print(f"URLError {exc.reason} url={url}", file=sys.stderr)
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ping_fail(url, timeout)
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return 4
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except Exception as exc:
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print(f"ERROR {exc} url={url}", file=sys.stderr)
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ping_fail(url, timeout)
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return 5
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if __name__ == "__main__":
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sys.exit(main())
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