🧹 Simplify deeply nested logic in validate_hostname#795
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Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>
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| def _resolve_and_validate_domain(hostname: str) -> bool: | ||
| try: | ||
| # Resolve hostname to IPs (IPv4 and IPv6) | ||
| # We filter for AF_INET/AF_INET6 to ensure we get IP addresses | ||
| addr_info = socket.getaddrinfo(hostname, None, proto=socket.IPPROTO_TCP) | ||
| for res in addr_info: | ||
| # res is (family, type, proto, canonname, sockaddr) | ||
| # sockaddr is (address, port) for AF_INET/AF_INET6 | ||
| ip_str = res[4][0] | ||
| ip = ipaddress.ip_address(ip_str) | ||
| if not _is_safe_ip(ip): | ||
| log.warning( | ||
| f"Skipping unsafe hostname {sanitize_for_log(hostname)} (resolves to non-global/multicast IP {ip})" | ||
| ) | ||
| return False | ||
| return True | ||
| except (socket.gaierror, ValueError, OSError) as e: | ||
| log.warning( | ||
| f"Failed to resolve/validate domain {sanitize_for_log(hostname)}: {sanitize_for_log(e)}" | ||
| ) | ||
| return False |
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📝 Info: Clean extract-method refactoring with no behavioral change
The extracted _resolve_and_validate_domain function (main.py:1116-1136) is logically identical to the code that was previously inline within validate_hostname. The function parameters, control flow, exception handling, return values, and log messages are all preserved exactly. The @lru_cache(maxsize=128) decorator remains on validate_hostname (main.py:1139), so caching behavior is unchanged. The new helper is only called from one site (main.py:1166), so there's no risk of uncached direct invocation.
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Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>
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Gates Passed
See analysis details in CodeScene
Quality Gate Profile: Pay Down Tech Debt
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🎯 What: Extracted domain resolution logic from
validate_hostnameinto a separate private function_resolve_and_validate_domain.💡 Why: Reduces cyclomatic complexity and deeply nested try-except blocks, making the code much easier to read and maintain.
✅ Verification: Verified by running
uv run pytestto ensure no regressions.✨ Result: Improved code readability while maintaining exact functionality.
PR created automatically by Jules for task 1747457200610282247 started by @abhimehro