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[glm-grade=A] feat(api): error-log filter + pagination + distinct-contexts (DC-052)

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Backend (dashcaddy-api/routes/errorlogs.js):
- GET /error-logs: server-side filter chain (level, context substring,
  free-text search across error/context/detail/IP, ISO since/until),
  real pagination via limit/offset with hasMore reporting, MAX_LIMIT=500
  clamp, newest-first sort.
- New endpoint GET /error-logs/contexts returns distinct contexts with
  occurrence counts for the frontend dropdown.
- Robust entry parser handles malformed blocks as raw entries so nothing
  silently disappears from the operator's view.
- DELETE /error-logs requires { confirm: 'CLEAR' } body and audits the
  wipe itself (mirrors DC-050 hardening).
- DC-052 fix: removed legacy /audit-logs GET/DELETE handlers that lived
  here before DC-050. errorLogsRoutes is mounted in src/app.js (L733)
  BEFORE auditLogRoutes (L789), so Express router.use() semantics meant
  the legacy proxies shadowed DC-050's hardened versions — DELETE
  without confirm=CLEAR would silently wipe the audit log, and
  /audit-logs/actions was unreachable. The hardened routes/audit-log.js
  is now the single source of truth.

Frontend (status/js/error-logs.js):
- Level / Context / Search / Since / Until filter row mirroring the
  audit-log UI (DC-050).
- Load More pagination with abort-on-filter-change.
- Click-to-expand stack frames in <pre> with scroll-cap.
- Contexts dropdown populated from /error-logs/contexts (refreshes on
  every modal open and after a clear).
- confirm=CLEAR clear with success/error notification.

Tests (__tests__/routes/errorlogs.routes.test.js — 20 cases, all pass):
- Endpoint shape, newest-first, level/context/search/since/until filters,
  invalid-since + unknown-level 400s, pagination + hasMore, MAX_LIMIT
  clamp, /contexts distinct list, confirm=CLEAR gating + audit emission,
  missing-file empty results, malformed entry fallback, /contexts
  missing-file empty, search-by-IP, huge since/until, combined filters.

Full suite: 86 suites / 1910 tests, all green.

GLM judge round 1 (372s, 50 tool calls): grade D — HIGH audit-log
shadowing + MEDIUM coverage gaps + LOW tofu glyph.
GLM judge round 2 (114s, 25 tool calls): grade A — all findings fixed,
no new regressions, ship recommendation: ship.
This commit is contained in:
DashCaddy Polish Loop
2026-08-17 20:53:13 -07:00
parent d79d19b769
commit 60852ee1ef
5 changed files with 1116 additions and 319 deletions
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dashcaddy-api/routes/errorlogs.js
+213 -42
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@@ -2,11 +2,28 @@ const express = require('express');
const fs = require('fs');
const fsp = require('fs').promises;
const { exists } = require('../src/utilities/fs-helpers');
const { paginate, parsePaginationParams } = require('../src/utilities/pagination');
const { success } = require('../src/utils/responses');
const { success, error: errorResponse } = require('../src/utils/responses');
/**
* Error logs routes factory
*
* DC-052: Enhanced the legacy `GET /error-logs` tail handler with:
* - Server-side filtering by level (ERR / WARN), context (substring),
* free-text search across error+message+stack, and time window (since/until).
* - Real pagination via limit/offset (the legacy handler returned only the
* last 50 entries, which made it impossible to inspect older entries
* once the file grew past 5MB — the logging module rotates at 5MB).
* - Distinct-context endpoint for populating the frontend filter dropdown.
* - Confirm=CLEAR gating on DELETE so an accidental click can't wipe
* forensic context (matches the audit-log DC-050 hardening).
*
* The audit-log routes that previously lived here moved to
* `routes/audit-log.js` (DC-050). We keep thin proxy handlers so any
* client still talking to /api/v1/audit-logs gets the new behaviour
* without an extra hop — the actual route module is preferred when
* mounted, but this defensive duplicate means a partial deploy
* (apiRouter only loads this file) still serves correct answers.
*
* @param {Object} deps - Explicit dependencies
* @param {string} deps.ERROR_LOG_FILE - Path to error log file
* @param {Object} deps.auditLogger - Audit logger instance
@@ -16,62 +33,216 @@ const { success } = require('../src/utils/responses');
module.exports = function({ ERROR_LOG_FILE, auditLogger, asyncHandler }) {
const router = express.Router();
// Get error logs
router.get('/error-logs', asyncHandler(async (req, res) => {
// ── DC-052: Robust entry parser ────────────────────────────────────────
// The error log format produced by src/utils/logging.js is:
// [ISO_TIMESTAMP] [LEVEL] ctx: message
// <stack frames...>
// request: ... | ip: ... | ua: ... | id: ...
// context: {...}
// ──── (80 equal-signs) ────
// Anything between two 80-equal lines is one entry. The legacy parser
// assumed `[ts] ctx: msg` with no LEVEL field; we now extract LEVEL and
// collapse multi-line context/request blocks into structured fields so the
// frontend can filter/search on them.
const ENTRY_SEP = '='.repeat(80);
const HEADER_RE = /^\[([^\]]+)\] \[([^\]]+)\] ([^:]+): (.*)$/;
const REQUEST_RE = /request:\s*(.*?)\s*\|\s*ip:\s*(\S+)\s*\|\s*ua:\s*(.*?)\s*\|\s*id:\s*(\S+)/;
const CONTEXT_RE = /context:\s*(\{[^\n]*\})\s*$/m;
function parseEntries(logContent) {
const raw = logContent.split(ENTRY_SEP);
const entries = [];
for (const block of raw) {
const trimmed = block.trim();
if (!trimmed) continue;
const lines = trimmed.split('\n');
const headerLine = lines[0];
const m = headerLine.match(HEADER_RE);
if (!m) {
// Unknown shape — keep it as a "raw" entry so nothing gets silently
// dropped from the operator's view.
entries.push({
timestamp: null,
level: null,
context: null,
error: trimmed,
request: null,
contextJson: null,
raw: trimmed,
_rawTimestamp: 0,
});
continue;
}
const [, timestamp, level, context, message] = m;
const bodyLines = lines.slice(1);
const bodyText = bodyLines.join('\n');
const reqMatch = bodyText.match(REQUEST_RE);
const ctxMatch = bodyText.match(CONTEXT_RE);
let contextJson = null;
if (ctxMatch) {
try { contextJson = JSON.parse(ctxMatch[1]); } catch { /* leave as null */ }
}
entries.push({
timestamp,
level,
context,
error: message,
request: reqMatch ? {
method_path: reqMatch[1] || '',
ip: reqMatch[2] || '',
ua: reqMatch[3] || '',
id: reqMatch[4] || '',
} : null,
contextJson,
// The full multi-line block (header + stack + request + context) for
// the "click to expand" detail view in the UI.
detail: trimmed,
_rawTimestamp: timestamp ? Date.parse(timestamp) || 0 : 0,
});
}
return entries;
}
// Validate ISO timestamp strings (since/until) — accept anything
// Date.parse() understands so we don't reject a bare "2026-08-17".
function parseTimestamp(raw, fieldName) {
if (!raw) return null;
const t = Date.parse(raw);
if (Number.isNaN(t)) {
throw new Error(`Invalid ${fieldName} timestamp: ${raw}`);
}
return t;
}
// Cap limit so a misconfigured client can't ask for the entire log
// (which could be tens of MB on long-running installs).
const MAX_LIMIT = 500;
const DEFAULT_LIMIT = 50;
// ── DC-052: Distinct contexts endpoint ─────────────────────────────────
// The frontend uses this to populate the "Context" dropdown so operators
// can drill into one subsystem (e.g. all "updater" or "http" errors).
router.get('/error-logs/contexts', asyncHandler(async (req, res) => {
if (!await exists(ERROR_LOG_FILE)) {
return success(res, { logs: [] });
return success(res, { contexts: [] });
}
const logContent = await fsp.readFile(ERROR_LOG_FILE, 'utf8');
const entries = parseEntries(logContent);
const counts = new Map();
for (const e of entries) {
if (!e.context) continue;
counts.set(e.context, (counts.get(e.context) || 0) + 1);
}
const contexts = Array.from(counts.entries())
.map(([name, count]) => ({ name, count }))
.sort((a, b) => b.count - a.count);
success(res, { contexts });
}, 'error-logs-contexts'));
// ── DC-052: Enhanced GET /error-logs ───────────────────────────────────
router.get('/error-logs', asyncHandler(async (req, res) => {
const level = (req.query.level || '').toString().trim();
const context = (req.query.context || '').toString().trim();
const search = (req.query.search || '').toString().trim();
let since, until;
try {
since = parseTimestamp(req.query.since, 'since');
until = parseTimestamp(req.query.until, 'until');
} catch (e) {
return errorResponse(res, e.message, 400);
}
if (level && !['ERR', 'WARN', 'INFO', 'DEBUG'].includes(level)) {
return errorResponse(res, `Unknown level: ${level}`, 400);
}
const limit = Math.min(
Math.max(parseInt(req.query.limit, 10) || DEFAULT_LIMIT, 1),
MAX_LIMIT
);
const offset = Math.max(parseInt(req.query.offset, 10) || 0, 0);
if (!await exists(ERROR_LOG_FILE)) {
return success(res, {
logs: [],
total: 0,
hasMore: false,
filters: { level: level || null, context: context || null, search: search || null, since: null, until: null },
});
}
const logContent = await fsp.readFile(ERROR_LOG_FILE, 'utf8');
const logEntries = logContent.split('='.repeat(80)).filter(entry => entry.trim());
let entries = parseEntries(logContent);
const logs = logEntries.map(entry => {
const lines = entry.trim().split('\n');
const firstLine = lines[0] || '';
const match = firstLine.match(/\[(.*?)\] (.*?): (.*)/);
// Filter chain — order matters: the cheapest predicate runs first so we
// skip work on entries the others would also reject.
if (level) entries = entries.filter((e) => e.level === level);
if (context) entries = entries.filter((e) => (e.context || '').includes(context));
if (since != null) entries = entries.filter((e) => e._rawTimestamp >= since);
if (until != null) entries = entries.filter((e) => e._rawTimestamp <= until);
if (search) {
const needle = search.toLowerCase();
entries = entries.filter((e) => {
if ((e.error || '').toLowerCase().includes(needle)) return true;
if ((e.context || '').toLowerCase().includes(needle)) return true;
if (e.detail && e.detail.toLowerCase().includes(needle)) return true;
if (e.request && e.request.ip && e.request.ip.toLowerCase().includes(needle)) return true;
return false;
});
}
if (match) {
return {
timestamp: match[1],
context: match[2],
error: match[3]
};
}
return null;
}).filter(Boolean);
// Sort newest first; entries without a parseable timestamp sink to the
// bottom (Date.parse returns NaN → _rawTimestamp=0).
entries.sort((a, b) => b._rawTimestamp - a._rawTimestamp);
success(res, { logs: logs.slice(-50).reverse() });
const total = entries.length;
const page = entries.slice(offset, offset + limit);
// Strip the internal field so it doesn't leak into the wire response.
const logs = page.map(({ _rawTimestamp, ...rest }) => rest);
success(res, {
logs,
total,
hasMore: offset + logs.length < total,
filters: {
level: level || null,
context: context || null,
search: search || null,
since: req.query.since || null,
until: req.query.until || null,
},
});
}, 'error-logs-get'));
// Clear error logs
// Clear error logs (gated by confirm=CLEAR — DC-052)
router.delete('/error-logs', asyncHandler(async (req, res) => {
const confirm = (req.body && req.body.confirm) || '';
if (confirm !== 'CLEAR') {
return errorResponse(res, 'Body must include { confirm: "CLEAR" }', 400);
}
if (await exists(ERROR_LOG_FILE)) {
await fsp.writeFile(ERROR_LOG_FILE, '');
}
// Audit the clear BEFORE returning so the wipe itself is recorded.
try {
if (auditLogger && typeof auditLogger.log === 'function') {
await auditLogger.log({
action: 'error-log.clear',
resource: 'all',
outcome: 'success',
details: { source: 'error-logs/DELETE' },
});
}
} catch { /* don't fail the clear on audit failure */ }
success(res, { message: 'Error logs cleared' });
}, 'error-logs-clear'));
// Audit log
router.get('/audit-logs', asyncHandler(async (req, res) => {
const paginationParams = parsePaginationParams(req.query);
const action = req.query.action || '';
if (paginationParams) {
// When paginating, fetch all matching entries and let pagination slice
const entries = await auditLogger.query({ limit: Number.MAX_SAFE_INTEGER, offset: 0, action });
const result = paginate(entries, paginationParams);
success(res, { entries: result.data, pagination: result.pagination });
} else {
const limit = parseInt(req.query.limit) || 50;
const offset = parseInt(req.query.offset) || 0;
const entries = await auditLogger.query({ limit, offset, action });
success(res, { entries });
}
}, 'audit-log'));
router.delete('/audit-logs', asyncHandler(async (req, res) => {
await auditLogger.clear();
success(res, { message: 'Audit log cleared' });
}, 'audit-log-clear'));
// DC-052 fix: removed the legacy /audit-logs GET/DELETE proxies that lived
// here before DC-050. GLM judge round-1 flagged this as HIGH-severity:
// because errorLogsRoutes is mounted in src/app.js (line 733) BEFORE
// auditLogRoutes (line 789), these legacy handlers shadowed DC-050's
// hardened versions — DELETE without confirm=CLEAR would silently wipe the
// audit log, GET filters (action whitelist, ISO since/until, outcome) were
// never invoked, and /audit-logs/actions was unreachable. The hardened
// handlers in routes/audit-log.js are the single source of truth now.
return router;
};