46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
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#!/usr/bin/env python3
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"""capacity-scan.py — deterministic capacity facts for /capacity-review.
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Python standard library only. Emits a JSON object to stdout.
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Reads physical capacities and workload allocations from the machine-readable
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tables in docs/hardware/reference.md, computes per-node allocated-vs-physical
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rollups, and cross-checks workload hostnames against `terraform output -json`
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and `ansible-inventory --list` to surface drift. Degrades gracefully when
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nothing is provisioned. Live usage stats are a documented future hook.
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Usage: python3 scripts/capacity-scan.py [--env staging] [--reference PATH]
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"""
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import argparse
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import json
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import os
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import subprocess
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import sys
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REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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def parse_table(markdown, required_cols):
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"""Return row dicts for the first markdown table whose header contains all
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required_cols. Keys are header names; values are raw cell strings.
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Rows whose cell count does not match the header are skipped."""
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lines = markdown.splitlines()
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required = set(required_cols)
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for i, raw in enumerate(lines):
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line = raw.strip()
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if not line.startswith("|"):
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continue
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headers = [c.strip() for c in line.strip("|").split("|")]
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if not required.issubset(set(headers)):
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continue
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rows = []
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# i + 2 skips the header's GFM separator row (|---|---|)
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for body in lines[i + 2:]:
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if not body.strip().startswith("|"):
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break
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cells = [c.strip() for c in body.strip().strip("|").split("|")]
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if len(cells) == len(headers):
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rows.append(dict(zip(headers, cells)))
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return rows
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return []
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