JSON Config Validate

Slug

9WMJ5JKQGH2F

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0

Size

1600 B · 62 lines

Expires

never

Last fetch

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Created

2026-09-07 00:36:01.122

Description

Parse JSON files from argv or the current directory

#!/usr/bin/env python3
# JSON config validate
# Read-only: json.load files from argv, or *.json in the current directory.
# Exit 0 if every file parses, 1 if none found, 2 if a file is invalid JSON.
# Hosted on Runny.sh. Review the script page before you run it.

from __future__ import annotations

import glob
import json
import sys
from pathlib import Path


def validate(path: Path) -> int:
    try:
        with path.open("r", encoding="utf-8") as fh:
            json.load(fh)
    except FileNotFoundError:
        print(f"{path}: CRITICAL missing")
        return 2
    except json.JSONDecodeError as exc:
        print(f"{path}: CRITICAL invalid JSON ({exc.msg} at line {exc.lineno})")
        return 2
    except OSError as exc:
        print(f"{path}: CRITICAL {exc}")
        return 2
    print(f"{path}: OK")
    return 0


def main() -> int:
    print("=== JSON config validate ===")
    print(f"Cwd:      {Path.cwd()}")
    if len(sys.argv) > 1:
        files = [Path(arg) for arg in sys.argv[1:]]
    else:
        files = [Path(p) for p in sorted(glob.glob("*.json"))]
    print(f"Files:    {len(files)}")
    print()
    if not files:
        print("No JSON files given and no *.json in cwd")
        print("Result: WARNING")
        return 1
    worst = 0
    for path in files:
        rc = validate(path)
        if rc > worst:
            worst = rc
    print()
    if worst == 0:
        print("Result: HEALTHY")
    elif worst == 1:
        print("Result: WARNING")
    else:
        print("Result: CRITICAL")
    return worst


if __name__ == "__main__":
    sys.exit(main())