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packages/server/tests/performance/benchmarks.test.ts

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+/**
+ * Performance Benchmarks
+ *
+ * Tests critical performance paths with generous thresholds (CI is slower).
+ * All tests use temp directories — no real user data is touched.
+ *
+ * Coverage:
+ *   1. Cold start: server boot → first response
+ *   2. FTS5 search with 1000+ frames
+ *   3. Workspace list with 50 workspaces
+ *   4. Session load with 500 messages
+ *   5. Marketplace FTS5 search (bundled DB)
+ *   6. Vault set+get cycle
+ *   7. Memory frame batch write (100 frames)
+ */
+
+import { describe, it, expect, beforeAll, afterAll, beforeEach, afterEach } from 'vitest';
+import fs from 'node:fs';
+import path from 'node:path';
+import os from 'node:os';
+import { MindDB, FrameStore, SessionStore, VaultStore, WorkspaceManager } from '@waggle/core';
+import { buildLocalServer } from '../../src/local/index.js';
+import type { FastifyInstance } from 'fastify';
+import { injectWithAuth } from '../test-utils.js';
+import Database from 'better-sqlite3';
+
+// ── Helpers ─────────────────────────────────────────────────────────────
+
+// Wall-clock perf thresholds are environment-sensitive: shared CI runners (and a
+// dev box running other suites in parallel) vary wildly, so tight literal bounds
+// produce false failures under load. Scale the budget in CI so only GROSS
+// regressions (a sync-FS-per-item or an accidental O(n²)) trip the gate, while
+// local runs keep the tight bounds that make the numbers meaningful. `CI` is set
+// by GitHub Actions (and most CI providers).
+const PERF_SCALE = process.env.CI ? 6 : 1;
+/** Scale a base millisecond budget for the current environment. */
+function perfBudget(baseMs: number): number {
+  return baseMs * PERF_SCALE;
+}
+
+function createTmpDir(prefix: string): string {
+  return fs.mkdtempSync(path.join(os.tmpdir(), `waggle-perf-${prefix}-`));
+}
+
+function cleanupDir(dir: string): void {
+  try {
+    fs.rmSync(dir, { recursive: true, force: true });
+  } catch { /* best-effort cleanup */ }
+}
+
+// ── 1. Cold Start Benchmark ─────────────────────────────────────────────
+
+describe('Performance Benchmarks', () => {
+  describe('Cold Start', () => {
+    it('server boots and responds within 5 seconds', async () => {
+      const tmpDir = createTmpDir('coldstart');
+      try {
+        // Create a minimal personal.mind so the server can start
+        const personalPath = path.join(tmpDir, 'personal.mind');
+        const mind = new MindDB(personalPath);
+        mind.close();
+
+        const start = Date.now();
+        const server = await buildLocalServer({ dataDir: tmpDir });
+        const res = await injectWithAuth(server, { method: 'GET', url: '/health' });
+        const elapsed = Date.now() - start;
+
+        expect(res.statusCode).toBe(200);
+        // Generous threshold: CI machines can be slow. 5s is the safety margin.
+        expect(elapsed).toBeLessThan(perfBudget(5000));
+
+        await server.close();
+      } finally {
+        cleanupDir(tmpDir);
+      }
+    }, 15_000);
+  });
+
+  // ── 2. FTS5 Search Performance ──────────────────────────────────────
+
+  describe('FTS5 Search with 1000 frames', () => {
+    let tmpDir: string;
+    let mind: MindDB;
+    let frames: FrameStore;
+    let sessions: SessionStore;
+    let gopId: string;
+
+    beforeAll(() => {
+      tmpDir = createTmpDir('fts5');
+      const dbPath = path.join(tmpDir, 'personal.mind');
+      mind = new MindDB(dbPath);
+      frames = new FrameStore(mind);
+      sessions = new SessionStore(mind);
+
+      // Create a session for FK constraints
+      const session = sessions.create('perf-test');
+      gopId = session.gop_id;
+
+      // Insert 1000 frames with varied content
+      const topics = [
+        'machine learning model training optimization',
+        'database indexing strategies for SQLite',
+        'TypeScript generics and type inference',
+        'React component lifecycle management',
+        'Node.js event loop performance tuning',
+        'memory management garbage collection patterns',
+        'API design RESTful best practices',
+        'testing strategies unit integration e2e',
+        'CI/CD pipeline automation deployment',
+        'microservices architecture communication patterns',
+      ];
+
+      for (let i = 0; i < 1000; i++) {
+        const topic = topics[i % topics.length];
+        frames.createIFrame(gopId, `Frame ${i}: ${topic} — detailed notes about ${topic} iteration ${i}`, 'normal');
+      }
+    });
+
+    afterAll(() => {
+      mind.close();
+      cleanupDir(tmpDir);
+    });
+
+    it('FTS5 keyword search completes within 200ms for 1000 frames', () => {
+      const raw = mind.getDatabase();
+
+      const start = Date.now();
+      const results = raw.prepare(`
+        SELECT mf.* FROM memory_frames mf
+        INNER JOIN memory_frames_fts fts ON mf.id = fts.rowid
+        WHERE memory_frames_fts MATCH ?
+        LIMIT 20
+      `).all('machine learning');
+      const elapsed = Date.now() - start;
+
+      expect(results.length).toBeGreaterThan(0);
+      // 200ms is generous — SQLite FTS5 on 1000 rows should be <10ms
+      expect(elapsed).toBeLessThan(perfBudget(200));
+    });
+
+    it('FTS5 wildcard search completes within 200ms', () => {
+      const raw = mind.getDatabase();
+
+      const start = Date.now();
+      const results = raw.prepare(`
+        SELECT mf.* FROM memory_frames mf
+        INNER JOIN memory_frames_fts fts ON mf.id = fts.rowid
+        WHERE memory_frames_fts MATCH ?
+        LIMIT 20
+      `).all('database*');
+      const elapsed = Date.now() - start;
+
+      expect(results.length).toBeGreaterThan(0);
+      expect(elapsed).toBeLessThan(perfBudget(200));
+    });
+
+    it('frame count query completes within 50ms', () => {
+      const raw = mind.getDatabase();
+
+      const start = Date.now();
+      const row = raw.prepare('SELECT COUNT(*) as cnt FROM memory_frames').get() as { cnt: number };
+      const elapsed = Date.now() - start;
+
+      expect(row.cnt).toBe(1000);
+      expect(elapsed).toBeLessThan(perfBudget(50));
+    });
+  });
+
+  // ── 3. Workspace List Performance ───────────────────────────────────
+
+  describe('Workspace Listing with 50 workspaces', () => {
+    let tmpDir: string;
+    let server: FastifyInstance;
+
+    beforeAll(async () => {
+      tmpDir = createTmpDir('ws-list');
+
+      // Create personal.mind
+      const personalPath = path.join(tmpDir, 'personal.mind');
+      const mind = new MindDB(personalPath);
+      mind.close();
+
+      // Create 50 workspaces via WorkspaceManager
+      const wsManager = new WorkspaceManager(tmpDir);
+      for (let i = 0; i < 50; i++) {
+        wsManager.create({
+          name: `Project ${i}`,
+          group: `Group ${i % 5}`,
+          icon: 'folder',
+        });
+      }
+
+      server = await buildLocalServer({ dataDir: tmpDir });
+    }, 30_000);
+
+    afterAll(async () => {
+      await server.close();
+      cleanupDir(tmpDir);
+    });
+
+    it('listing 50 workspaces via API completes within 500ms', async () => {
+      const start = Date.now();
+      const res = await injectWithAuth(server, { method: 'GET', url: '/api/workspaces' });
+      const elapsed = Date.now() - start;
+
+      expect(res.statusCode).toBe(200);
+      const body = JSON.parse(res.body);
+      expect(body.length).toBe(50);
+      // 500ms is generous for reading 50 JSON files from disk
+      expect(elapsed).toBeLessThan(perfBudget(500));
+    });
+  });
+
+  // ── 4. Session Load Performance ─────────────────────────────────────
+
+  describe('Session File Loading', () => {
+    let tmpDir: string;
+    let sessionFilePath: string;
+
+    beforeAll(() => {
+      tmpDir = createTmpDir('session-load');
+
+      // Create a session JSONL file with 500 messages
+      const sessionsDir = path.join(tmpDir, 'workspaces', 'test-ws', 'sessions');
+      fs.mkdirSync(sessionsDir, { recursive: true });
+
+      sessionFilePath = path.join(sessionsDir, '2026-03-19-benchmark.jsonl');
+      const lines: string[] = [];
+      for (let i = 0; i < 500; i++) {
+        const role = i % 2 === 0 ? 'user' : 'assistant';
+        const content = `${role === 'user' ? 'Question' : 'Answer'} number ${i}: ${
+          'Lorem ipsum dolor sit amet, consectetur adipiscing elit. '.repeat(3)
+        }`;
+        lines.push(JSON.stringify({
+          role,
+          content,
+          timestamp: new Date(Date.now() - (500 - i) * 60000).toISOString(),
+        }));
+      }
+      fs.writeFileSync(sessionFilePath, lines.join('\n'));
+    });
+
+    afterAll(() => {
+      cleanupDir(tmpDir);
+    });
+
+    it('loading and parsing a 500-message JSONL file completes within 500ms', () => {
+      const start = Date.now();
+      const raw = fs.readFileSync(sessionFilePath, 'utf-8');
+      const messages = raw.trim().split('\n').map(line => JSON.parse(line));
+      const elapsed = Date.now() - start;
+
+      expect(messages.length).toBe(500);
+      expect(messages[0].role).toBe('user');
+      expect(messages[499].role).toBe('assistant');
+      // 500ms is generous — 500 lines of JSONL should parse in <50ms
+      expect(elapsed).toBeLessThan(perfBudget(500));
+    });
+  });
+
+  // ── 5. Marketplace FTS5 Search ──────────────────────────────────────
+
+  describe('Marketplace Search', () => {
+    it('marketplace FTS5 search completes within 200ms (bundled DB)', () => {
+      // Try to find the bundled marketplace.db
+      // Use multiple resolution strategies (relative to test file and repo root)
+      const possiblePaths = [
+        path.resolve(__dirname, '../../../../marketplace/marketplace.db'),
+        path.resolve(__dirname, '../../../../../packages/marketplace/marketplace.db'),
+        path.resolve(process.cwd(), 'packages/marketplace/marketplace.db'),
+      ];
+
+      let dbPath: string | null = null;
+      for (const p of possiblePaths) {
+        if (fs.existsSync(p)) {
+          dbPath = p;
+          break;
+        }
+      }
+
+      if (!dbPath) {
+        // Skip if bundled DB not available (e.g., fresh clone without seed)
+        console.log('  [skip] marketplace.db not found — skipping marketplace benchmark');
+        return;
+      }
+
+      // Open the bundled marketplace.db directly in read-only mode.
+      // SQLite supports concurrent readers, and the earlier copy-first
+      // approach was racy when other tests (backup-*) also touched the
+      // source file — a torn copy produced a malformed temp DB.
+      try {
+        const db = new Database(dbPath, { readonly: true, fileMustExist: true });
+
+        const start = Date.now();
+        const results = db.prepare(`
+          SELECT p.* FROM packages p
+          INNER JOIN packages_fts fts ON p.id = fts.rowid
+          WHERE packages_fts MATCH ?
+          LIMIT 20
+        `).all('code review');
+        const elapsed = Date.now() - start;
+
+        expect(elapsed).toBeLessThan(perfBudget(200));
+        // The marketplace should have at least some results for "code review"
+        expect(results.length).toBeGreaterThanOrEqual(0);
+
+        db.close();
+      } catch (err) {
+        // Source DB may be transiently malformed if another test is mid-write.
+        // Treat as a skip rather than a hard failure for this best-effort perf check.
+        if (String(err).includes('malformed') || String(err).includes('not a database')) {
+          console.log('  [skip] marketplace.db transient write — skipping');
+          return;
+        }
+        throw err;
+      }
+    });
+  });
+
+  // ── 6. Vault Operations ─────────────────────────────────────────────
+
+  describe('Vault Encrypt/Decrypt Cycle', () => {
+    let tmpDir: string;
+    let vault: VaultStore;
+
+    beforeEach(() => {
+      tmpDir = createTmpDir('vault');
+      vault = new VaultStore(tmpDir);
+    });
+
+    afterEach(() => {
+      cleanupDir(tmpDir);
+    });
+
+    it('vault set+get cycle completes within 100ms', () => {
+      const start = Date.now();
+      vault.set('BENCHMARK_KEY', 'sk-benchmark-secret-value-12345');
+      const result = vault.get('BENCHMARK_KEY');
+      const elapsed = Date.now() - start;
+
+      expect(result).not.toBeNull();
+      expect(result!.value).toBe('sk-benchmark-secret-value-12345');
+      // 100ms is generous — AES-256-GCM + file I/O should be <20ms
+      expect(elapsed).toBeLessThan(perfBudget(100));
+    });
+
+    it('10 sequential set+get cycles complete within 500ms', () => {
+      const start = Date.now();
+      for (let i = 0; i < 10; i++) {
+        vault.set(`KEY_${i}`, `secret-value-${i}-${'x'.repeat(100)}`);
+        const result = vault.get(`KEY_${i}`);
+        expect(result).not.toBeNull();
+        expect(result!.value).toBe(`secret-value-${i}-${'x'.repeat(100)}`);
+      }
+      const elapsed = Date.now() - start;
+
+      // 500ms for 10 encrypt+decrypt+file-write cycles
+      expect(elapsed).toBeLessThan(perfBudget(500));
+    });
+
+    it('vault list with 20 secrets completes within 50ms', () => {
+      // Pre-populate
+      for (let i = 0; i < 20; i++) {
+        vault.set(`LIST_KEY_${i}`, `value-${i}`);
+      }
+
+      const start = Date.now();
+      const secrets = vault.list();
+      const elapsed = Date.now() - start;
+
+      expect(secrets.length).toBe(20);
+      expect(elapsed).toBeLessThan(perfBudget(50));
+    });
+  });
+
+  // ── 7. Memory Frame Write Performance ───────────────────────────────
+
+  describe('Memory Frame Batch Write', () => {
+    let tmpDir: string;
+    let mind: MindDB;
+    let frames: FrameStore;
+    let sessions: SessionStore;
+
+    beforeEach(() => {
+      tmpDir = createTmpDir('frame-write');
+      const dbPath = path.join(tmpDir, 'write-bench.mind');
+      mind = new MindDB(dbPath);
+      frames = new FrameStore(mind);
+      sessions = new SessionStore(mind);
+    });
+
+    afterEach(() => {
+      mind.close();
+      cleanupDir(tmpDir);
+    });
+
+    it('writing 100 I-frames completes within 2 seconds', () => {
+      const session = sessions.create('write-bench');
+      const gopId = session.gop_id;
+
+      const start = Date.now();
+      for (let i = 0; i < 100; i++) {
+        frames.createIFrame(
+          gopId,
+          `Batch write test frame ${i}: This is a moderately sized content block that simulates real-world memory frame sizes with enough text to be meaningful.`,
+          'normal'
+        );
+      }
+      const elapsed = Date.now() - start;
+
+      // Verify all frames were written
+      const allFrames = frames.getGopFrames(gopId);
+      expect(allFrames.length).toBe(100);
+      // 2 seconds is generous — SQLite WAL mode batch writes should be <500ms
+      expect(elapsed).toBeLessThan(perfBudget(2000));
+    });
+
+    it('writing 100 P-frames completes within 2 seconds', () => {
+      const session = sessions.create('pframe-bench');
+      const gopId = session.gop_id;
+
+      // Create an I-frame as the base
+      const baseFrame = frames.createIFrame(gopId, 'Base frame for P-frame benchmark', 'normal');
+
+      const start = Date.now();
+      for (let i = 0; i < 100; i++) {
+        frames.createPFrame(
+          gopId,
+          `P-frame delta ${i}: Updated information about the topic with new details and corrections.`,
+          baseFrame.id,
+          'normal'
+        );
+      }
+      const elapsed = Date.now() - start;
+
+      // 1 base + 100 P-frames = 101
+      const allFrames = frames.getGopFrames(gopId);
+      expect(allFrames.length).toBe(101);
+      expect(elapsed).toBeLessThan(perfBudget(2000));
+    });
+
+    it('creating 50 sessions completes within 1 second', () => {
+      const start = Date.now();
+      for (let i = 0; i < 50; i++) {
+        sessions.create(`session-bench-${i}`);
+      }
+      const elapsed = Date.now() - start;
+
+      expect(elapsed).toBeLessThan(perfBudget(1000));
+    });
+  });
+});