CI Integration for Performance Tests

name: Performance Smoke Test

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  performance-smoke:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install k6
        run: |
          sudo gpg -k
          sudo gpg --no-default-keyring --keyring /usr/share/keyrings/k6-archive-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C5AD17C747E3415A3642D57D77C6C491D6AC1D68
          echo "deb [signed-by=/usr/share/keyrings/k6-archive-keyring.gpg] https://dl.k6.io/deb stable main" | sudo tee /etc/apt/sources.list.d/k6.list
          sudo apt-get update
          sudo apt-get install k6

      - name: Run Performance Smoke Test
        run: k6 run tests/performance/smoke-test.js
        env:
          K6_OUT: json=results.json
          BASE_URL: ${{ secrets.PERF_TEST_URL }}

      - name: Check Results Against Budget
        run: |
          # Parse k6 JSON output and check against budgets
          python3 scripts/check-perf-budget.py results.json

      - name: Upload Results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: performance-results
          path: results.json

      - name: Comment PR with Results
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const results = JSON.parse(fs.readFileSync('results.json', 'utf8'));
            // Post a summary comment on the PR
            github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: `## Performance Smoke Test Results\n
              | Metric | Value | Budget | Status |
              |--------|-------|--------|--------|
              | p95 Response Time | ${results.p95}ms | <1500ms | ${results.p95 < 1500 ? "PASS" : "FAIL"} |
              | Error Rate | ${results.errorRate}% | <0.1% | ${results.errorRate < 0.1 ? "PASS" : "FAIL"} |
              | Throughput | ${results.rps} RPS | >50 RPS | ${results.rps > 50 ? "PASS" : "FAIL"} |`
            });

import http from "k6/http";
import { check, sleep } from "k6";
import { Trend, Rate } from "k6/metrics";

// Custom metrics for budget checking
const loginDuration = new Trend("login_duration");
const balanceDuration = new Trend("balance_duration");
const errorRate = new Rate("errors");

export const options = {
  // Smoke test: 10 users for 2 minutes
  vus: 10,
  duration: "2m",
  thresholds: {
    login_duration:   ["p(95)<1500"],  // Same budgets as full test
    balance_duration: ["p(95)<800"],
    errors:           ["rate<0.01"],   // < 1% errors
    http_req_duration: ["p(95)<2000"], // Overall p95
  },
};

const BASE_URL = __ENV.BASE_URL || "https://staging.banking.app";

export default function () {
  // Login
  const loginRes = http.post(`${BASE_URL}/api/auth/login`, JSON.stringify({
    username: `testuser_${__VU}`,
    password: "Test@1234",
  }), { headers: { "Content-Type": "application/json" } });

  loginDuration.add(loginRes.timings.duration);
  errorRate.add(loginRes.status !== 200);

  check(loginRes, { "login 200": (r) => r.status === 200 });
  if (loginRes.status !== 200) return;

  sleep(2); // Minimal think time for smoke test

  // Balance check
  const token = loginRes.json("token");
  const balanceRes = http.get(`${BASE_URL}/api/accounts/balance`, {
    headers: { Authorization: `Bearer ${token}` },
  });

  balanceDuration.add(balanceRes.timings.duration);
  errorRate.add(balanceRes.status !== 200);

  check(balanceRes, { "balance 200": (r) => r.status === 200 });

  sleep(2);
}