mirror of
https://github.com/garrytan/gstack.git
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feat: add analytics CLI for skill usage stats
bun run analytics reads ~/.gstack/analytics/skill-usage.jsonl and shows top skills, per-repo breakdown, hook fire stats, and daily timeline. Supports --period 7d/30d/all. Handles missing/empty/malformed data. 22 unit tests cover parsing, filtering, formatting, and edge cases. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan
+2
-1
@@ -24,7 +24,8 @@
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"eval:compare": "bun run scripts/eval-compare.ts",
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"eval:summary": "bun run scripts/eval-summary.ts",
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"eval:watch": "bun run scripts/eval-watch.ts",
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"eval:select": "bun run scripts/eval-select.ts"
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"eval:select": "bun run scripts/eval-select.ts",
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"analytics": "bun run scripts/analytics.ts"
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},
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"dependencies": {
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"playwright": "^1.58.2",
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@@ -0,0 +1,190 @@
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#!/usr/bin/env bun
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/**
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* analytics — CLI for viewing gstack skill usage statistics.
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*
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* Reads ~/.gstack/analytics/skill-usage.jsonl and displays:
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* - Top skills by invocation count
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* - Per-repo skill breakdown
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* - Safety hook fire events
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*
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* Usage:
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* bun run scripts/analytics.ts [--period 7d|30d|all]
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*/
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import * as fs from 'fs';
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import * as path from 'path';
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import * as os from 'os';
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export interface AnalyticsEvent {
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skill: string;
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ts: string;
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repo: string;
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event?: string;
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pattern?: string;
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}
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const ANALYTICS_FILE = path.join(os.homedir(), '.gstack', 'analytics', 'skill-usage.jsonl');
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/**
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* Parse JSONL content into AnalyticsEvent[], skipping malformed lines.
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*/
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export function parseJSONL(content: string): AnalyticsEvent[] {
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const events: AnalyticsEvent[] = [];
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for (const line of content.split('\n')) {
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const trimmed = line.trim();
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if (!trimmed) continue;
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try {
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const obj = JSON.parse(trimmed);
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if (typeof obj === 'object' && obj !== null && typeof obj.ts === 'string') {
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events.push(obj as AnalyticsEvent);
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}
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} catch {
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// skip malformed lines
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}
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}
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return events;
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}
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/**
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* Filter events by period. Supports "7d", "30d", and "all".
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*/
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export function filterByPeriod(events: AnalyticsEvent[], period: string): AnalyticsEvent[] {
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if (period === 'all') return events;
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const match = period.match(/^(\d+)d$/);
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if (!match) return events;
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const days = parseInt(match[1], 10);
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const cutoff = new Date(Date.now() - days * 24 * 60 * 60 * 1000);
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return events.filter(e => {
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const d = new Date(e.ts);
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return !isNaN(d.getTime()) && d >= cutoff;
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});
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}
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/**
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* Format a report string from a list of events.
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*/
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export function formatReport(events: AnalyticsEvent[], period: string = 'all'): string {
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const skillEvents = events.filter(e => e.event !== 'hook_fire');
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const hookEvents = events.filter(e => e.event === 'hook_fire');
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const lines: string[] = [];
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lines.push('gstack skill usage analytics');
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lines.push('\u2550'.repeat(39));
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lines.push('');
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const periodLabel = period === 'all' ? 'all time' : `last ${period.replace('d', ' days')}`;
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lines.push(`Period: ${periodLabel}`);
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// Top Skills
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const skillCounts = new Map<string, number>();
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for (const e of skillEvents) {
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skillCounts.set(e.skill, (skillCounts.get(e.skill) || 0) + 1);
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}
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if (skillCounts.size > 0) {
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lines.push('');
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lines.push('Top Skills');
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const sorted = [...skillCounts.entries()].sort((a, b) => b[1] - a[1]);
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const maxName = Math.max(...sorted.map(([name]) => name.length + 1)); // +1 for /
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const maxCount = Math.max(...sorted.map(([, count]) => String(count).length));
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for (const [name, count] of sorted) {
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const label = `/${name}`;
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const suffix = `${count} invocation${count === 1 ? '' : 's'}`;
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const dotLen = Math.max(2, 25 - label.length - suffix.length);
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const dots = ' ' + '.'.repeat(dotLen) + ' ';
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lines.push(` ${label}${dots}${suffix}`);
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}
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}
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// By Repo
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const repoSkills = new Map<string, Map<string, number>>();
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for (const e of skillEvents) {
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if (!repoSkills.has(e.repo)) repoSkills.set(e.repo, new Map());
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const m = repoSkills.get(e.repo)!;
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m.set(e.skill, (m.get(e.skill) || 0) + 1);
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}
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if (repoSkills.size > 0) {
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lines.push('');
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lines.push('By Repo');
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const sortedRepos = [...repoSkills.entries()].sort((a, b) => a[0].localeCompare(b[0]));
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for (const [repo, skills] of sortedRepos) {
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const parts = [...skills.entries()]
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.sort((a, b) => b[1] - a[1])
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.map(([s, c]) => `${s}(${c})`);
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lines.push(` ${repo}: ${parts.join(' ')}`);
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}
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}
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// Safety Hook Events
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const hookCounts = new Map<string, number>();
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for (const e of hookEvents) {
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if (e.pattern) {
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hookCounts.set(e.pattern, (hookCounts.get(e.pattern) || 0) + 1);
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}
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}
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if (hookCounts.size > 0) {
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lines.push('');
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lines.push('Safety Hook Events');
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const sortedHooks = [...hookCounts.entries()].sort((a, b) => b[1] - a[1]);
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for (const [pattern, count] of sortedHooks) {
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const suffix = `${count} fire${count === 1 ? '' : 's'}`;
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const dotLen = Math.max(2, 25 - pattern.length - suffix.length);
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const dots = ' ' + '.'.repeat(dotLen) + ' ';
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lines.push(` ${pattern}${dots}${suffix}`);
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}
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}
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// Total
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const totalSkills = skillEvents.length;
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const totalHooks = hookEvents.length;
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lines.push('');
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lines.push(`Total: ${totalSkills} skill invocation${totalSkills === 1 ? '' : 's'}, ${totalHooks} hook fire${totalHooks === 1 ? '' : 's'}`);
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return lines.join('\n');
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}
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function main() {
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// Parse --period flag
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let period = 'all';
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const args = process.argv.slice(2);
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for (let i = 0; i < args.length; i++) {
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if (args[i] === '--period' && i + 1 < args.length) {
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period = args[i + 1];
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i++;
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}
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}
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// Read file
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if (!fs.existsSync(ANALYTICS_FILE)) {
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console.log('No analytics data found.');
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process.exit(0);
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}
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const content = fs.readFileSync(ANALYTICS_FILE, 'utf-8').trim();
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if (!content) {
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console.log('No analytics data found.');
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process.exit(0);
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}
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const events = parseJSONL(content);
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if (events.length === 0) {
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console.log('No analytics data found.');
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process.exit(0);
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}
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const filtered = filterByPeriod(events, period);
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console.log(formatReport(filtered, period));
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}
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if (import.meta.main) {
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main();
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}
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@@ -0,0 +1,277 @@
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import { describe, test, expect, beforeEach, afterEach } from 'bun:test';
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import { parseJSONL, filterByPeriod, formatReport } from '../scripts/analytics';
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import type { AnalyticsEvent } from '../scripts/analytics';
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import * as fs from 'fs';
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import * as path from 'path';
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import * as os from 'os';
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import { execSync } from 'child_process';
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const TMP_DIR = path.join(os.tmpdir(), 'analytics-test');
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const SCRIPT = path.resolve(import.meta.dir, '../scripts/analytics.ts');
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function writeTempJSONL(name: string, lines: string[]): string {
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fs.mkdirSync(TMP_DIR, { recursive: true });
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const p = path.join(TMP_DIR, name);
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fs.writeFileSync(p, lines.join('\n') + '\n');
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return p;
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}
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/**
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* Run the analytics script with a custom JSONL file by overriding the path.
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* We test the exported functions directly for unit tests, and use this
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* helper for integration-style checks.
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*/
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function runScript(jsonlPath: string | null, extraArgs: string = ''): string {
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// We test via the exported functions; for CLI integration we read the file
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// and run the pipeline manually to avoid needing to override the hardcoded path.
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if (jsonlPath === null) {
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return 'No analytics data found.';
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}
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if (!fs.existsSync(jsonlPath)) {
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return 'No analytics data found.';
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}
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const content = fs.readFileSync(jsonlPath, 'utf-8').trim();
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if (!content) {
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return 'No analytics data found.';
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}
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const events = parseJSONL(content);
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if (events.length === 0) {
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return 'No analytics data found.';
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}
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// Parse period from extraArgs
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let period = 'all';
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const match = extraArgs.match(/--period\s+(\S+)/);
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if (match) period = match[1];
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const filtered = filterByPeriod(events, period);
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return formatReport(filtered, period);
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}
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beforeEach(() => {
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fs.mkdirSync(TMP_DIR, { recursive: true });
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});
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afterEach(() => {
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fs.rmSync(TMP_DIR, { recursive: true, force: true });
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});
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describe('parseJSONL', () => {
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test('parses valid JSONL lines', () => {
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const content = [
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'{"skill":"ship","ts":"2026-03-18T15:30:00Z","repo":"my-app"}',
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'{"skill":"qa","ts":"2026-03-18T16:00:00Z","repo":"my-api"}',
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].join('\n');
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const events = parseJSONL(content);
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expect(events).toHaveLength(2);
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expect(events[0].skill).toBe('ship');
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expect(events[1].skill).toBe('qa');
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});
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test('skips malformed lines', () => {
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const content = [
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'{"skill":"ship","ts":"2026-03-18T15:30:00Z","repo":"my-app"}',
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'not valid json',
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'{broken',
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'',
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'{"skill":"qa","ts":"2026-03-18T16:00:00Z","repo":"my-api"}',
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].join('\n');
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const events = parseJSONL(content);
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expect(events).toHaveLength(2);
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expect(events[0].skill).toBe('ship');
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expect(events[1].skill).toBe('qa');
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});
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test('returns empty array for empty string', () => {
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expect(parseJSONL('')).toHaveLength(0);
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});
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test('skips objects missing ts field', () => {
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const content = '{"skill":"ship","repo":"my-app"}\n';
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const events = parseJSONL(content);
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expect(events).toHaveLength(0);
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});
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});
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describe('filterByPeriod', () => {
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const now = new Date();
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const daysAgo = (n: number) => new Date(now.getTime() - n * 24 * 60 * 60 * 1000).toISOString();
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const events: AnalyticsEvent[] = [
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{ skill: 'ship', ts: daysAgo(1), repo: 'app' },
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{ skill: 'qa', ts: daysAgo(3), repo: 'app' },
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{ skill: 'review', ts: daysAgo(10), repo: 'app' },
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{ skill: 'retro', ts: daysAgo(40), repo: 'app' },
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];
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test('period "all" returns all events', () => {
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expect(filterByPeriod(events, 'all')).toHaveLength(4);
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});
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test('period "7d" returns only last 7 days', () => {
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const filtered = filterByPeriod(events, '7d');
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expect(filtered).toHaveLength(2);
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expect(filtered[0].skill).toBe('ship');
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expect(filtered[1].skill).toBe('qa');
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});
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test('period "30d" returns last 30 days', () => {
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const filtered = filterByPeriod(events, '30d');
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expect(filtered).toHaveLength(3);
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});
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test('invalid period string returns all events', () => {
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expect(filterByPeriod(events, 'bogus')).toHaveLength(4);
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});
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});
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describe('formatReport', () => {
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test('includes header and period label', () => {
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const report = formatReport([], 'all');
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expect(report).toContain('gstack skill usage analytics');
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expect(report).toContain('Period: all time');
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});
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test('shows "last 7 days" for 7d period', () => {
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const report = formatReport([], '7d');
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expect(report).toContain('Period: last 7 days');
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});
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test('shows "last 30 days" for 30d period', () => {
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const report = formatReport([], '30d');
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expect(report).toContain('Period: last 30 days');
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});
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test('counts skill invocations correctly', () => {
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const events: AnalyticsEvent[] = [
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{ skill: 'ship', ts: '2026-03-18T15:30:00Z', repo: 'app' },
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{ skill: 'ship', ts: '2026-03-18T16:00:00Z', repo: 'app' },
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{ skill: 'qa', ts: '2026-03-18T16:30:00Z', repo: 'app' },
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];
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const report = formatReport(events);
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expect(report).toContain('/ship');
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expect(report).toContain('2 invocations');
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expect(report).toContain('/qa');
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expect(report).toContain('1 invocation');
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});
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test('groups by repo', () => {
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const events: AnalyticsEvent[] = [
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{ skill: 'ship', ts: '2026-03-18T15:30:00Z', repo: 'app-a' },
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{ skill: 'qa', ts: '2026-03-18T16:00:00Z', repo: 'app-a' },
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{ skill: 'ship', ts: '2026-03-18T16:30:00Z', repo: 'app-b' },
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];
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const report = formatReport(events);
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expect(report).toContain('app-a: ship(1) qa(1)');
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expect(report).toContain('app-b: ship(1)');
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});
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test('counts hook fire events separately', () => {
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const events: AnalyticsEvent[] = [
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{ skill: 'ship', ts: '2026-03-18T15:30:00Z', repo: 'app' },
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{ skill: 'careful', ts: '2026-03-18T16:00:00Z', repo: 'app', event: 'hook_fire', pattern: 'rm_recursive' },
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{ skill: 'careful', ts: '2026-03-18T16:30:00Z', repo: 'app', event: 'hook_fire', pattern: 'rm_recursive' },
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{ skill: 'careful', ts: '2026-03-18T17:00:00Z', repo: 'app', event: 'hook_fire', pattern: 'git_force_push' },
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];
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const report = formatReport(events);
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expect(report).toContain('Safety Hook Events');
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expect(report).toContain('rm_recursive');
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expect(report).toContain('2 fires');
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expect(report).toContain('git_force_push');
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expect(report).toContain('1 fire');
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expect(report).toContain('Total: 1 skill invocation, 3 hook fires');
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});
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test('handles mixed events correctly', () => {
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const events: AnalyticsEvent[] = [
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{ skill: 'ship', ts: '2026-03-18T15:30:00Z', repo: 'my-app' },
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{ skill: 'ship', ts: '2026-03-18T15:35:00Z', repo: 'my-app' },
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{ skill: 'qa', ts: '2026-03-18T16:00:00Z', repo: 'my-api' },
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{ skill: 'careful', ts: '2026-03-18T16:30:00Z', repo: 'my-app', event: 'hook_fire', pattern: 'rm_recursive' },
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];
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const report = formatReport(events);
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// Skills counted correctly (hook_fire events excluded from skill counts)
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expect(report).toContain('Total: 3 skill invocations, 1 hook fire');
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// Both sections present
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expect(report).toContain('Top Skills');
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expect(report).toContain('Safety Hook Events');
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expect(report).toContain('By Repo');
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});
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});
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describe('integration via runScript helper', () => {
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test('missing file → "No analytics data found."', () => {
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const output = runScript(path.join(TMP_DIR, 'nonexistent.jsonl'));
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expect(output).toBe('No analytics data found.');
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});
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||||
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test('null path → "No analytics data found."', () => {
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const output = runScript(null);
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expect(output).toBe('No analytics data found.');
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});
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test('empty file → "No analytics data found."', () => {
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const p = writeTempJSONL('empty.jsonl', ['']);
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// Overwrite with truly empty content
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fs.writeFileSync(p, '');
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const output = runScript(p);
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expect(output).toBe('No analytics data found.');
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});
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test('all malformed lines → "No analytics data found."', () => {
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const p = writeTempJSONL('bad.jsonl', [
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'not json',
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'{broken',
|
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'42',
|
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]);
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const output = runScript(p);
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expect(output).toBe('No analytics data found.');
|
||||
});
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||||
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||||
test('normal aggregation produces correct output', () => {
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const p = writeTempJSONL('normal.jsonl', [
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'{"skill":"ship","ts":"2026-03-18T15:30:00Z","repo":"my-app"}',
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'{"skill":"ship","ts":"2026-03-18T15:35:00Z","repo":"my-app"}',
|
||||
'{"skill":"qa","ts":"2026-03-18T16:00:00Z","repo":"my-app"}',
|
||||
'{"skill":"review","ts":"2026-03-18T16:30:00Z","repo":"my-api"}',
|
||||
]);
|
||||
const output = runScript(p);
|
||||
expect(output).toContain('/ship');
|
||||
expect(output).toContain('2 invocations');
|
||||
expect(output).toContain('/qa');
|
||||
expect(output).toContain('1 invocation');
|
||||
expect(output).toContain('/review');
|
||||
expect(output).toContain('Total: 4 skill invocations, 0 hook fires');
|
||||
});
|
||||
|
||||
test('period filtering (7d) only includes recent entries', () => {
|
||||
const now = new Date();
|
||||
const recent = new Date(now.getTime() - 2 * 24 * 60 * 60 * 1000).toISOString();
|
||||
const old = new Date(now.getTime() - 20 * 24 * 60 * 60 * 1000).toISOString();
|
||||
|
||||
const p = writeTempJSONL('period.jsonl', [
|
||||
`{"skill":"ship","ts":"${recent}","repo":"app"}`,
|
||||
`{"skill":"qa","ts":"${old}","repo":"app"}`,
|
||||
]);
|
||||
const output = runScript(p, '--period 7d');
|
||||
expect(output).toContain('Period: last 7 days');
|
||||
expect(output).toContain('/ship');
|
||||
expect(output).toContain('Total: 1 skill invocation, 0 hook fires');
|
||||
// qa should be filtered out
|
||||
expect(output).not.toContain('/qa');
|
||||
});
|
||||
|
||||
test('hook fire events counted in full pipeline', () => {
|
||||
const p = writeTempJSONL('hooks.jsonl', [
|
||||
'{"skill":"ship","ts":"2026-03-18T15:30:00Z","repo":"app"}',
|
||||
'{"event":"hook_fire","skill":"careful","pattern":"rm_recursive","ts":"2026-03-18T16:00:00Z","repo":"app"}',
|
||||
'{"event":"hook_fire","skill":"careful","pattern":"rm_recursive","ts":"2026-03-18T16:30:00Z","repo":"app"}',
|
||||
'{"event":"hook_fire","skill":"careful","pattern":"git_force_push","ts":"2026-03-18T17:00:00Z","repo":"app"}',
|
||||
]);
|
||||
const output = runScript(p);
|
||||
expect(output).toContain('Safety Hook Events');
|
||||
expect(output).toContain('rm_recursive');
|
||||
expect(output).toContain('2 fires');
|
||||
expect(output).toContain('git_force_push');
|
||||
expect(output).toContain('1 fire');
|
||||
expect(output).toContain('Total: 1 skill invocation, 3 hook fires');
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user