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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 | 'use client' import { useCallback, useEffect, useRef, useState } from 'react' import Link from 'next/link' import { css } from '../../../../../styled-system/css' import { useBackgroundTask } from '@/hooks/useBackgroundTask' interface TaskConfig { duration: number eventCount: number payloadSizeBytes: number shouldFail: boolean failAt: number } interface StressPreset { name: string description: string taskCount: number config: TaskConfig } const PRESETS: StressPreset[] = [ { name: 'Concurrent Light', description: '10 tasks, 10 events each, no payload', taskCount: 10, config: { duration: 5, eventCount: 10, payloadSizeBytes: 0, shouldFail: false, failAt: 70 }, }, { name: 'Concurrent Heavy', description: '20 tasks, 50 events each, 1KB payload', taskCount: 20, config: { duration: 10, eventCount: 50, payloadSizeBytes: 1024, shouldFail: false, failAt: 70 }, }, { name: 'Rapid Fire', description: '5 tasks, 500 events each, 10ms intervals', taskCount: 5, config: { duration: 5, eventCount: 500, payloadSizeBytes: 0, shouldFail: false, failAt: 70 }, }, { name: 'Large Payloads', description: '3 tasks, 20 events each, 50KB payload', taskCount: 3, config: { duration: 10, eventCount: 20, payloadSizeBytes: 50 * 1024, shouldFail: false, failAt: 70, }, }, { name: 'Event Replay Stress', description: '1 task, 1000 events (test replay performance)', taskCount: 1, config: { duration: 20, eventCount: 1000, payloadSizeBytes: 100, shouldFail: false, failAt: 70, }, }, { name: 'Mixed Failures', description: '10 tasks, 50% fail at random points', taskCount: 10, config: { duration: 5, eventCount: 20, payloadSizeBytes: 0, shouldFail: true, failAt: 50 }, }, ] interface TaskInfo { id: string startedAt: number config: TaskConfig } interface AggregateStats { totalTasks: number running: number completed: number failed: number cancelled: number totalEvents: number eventsPerSecond: number startTime: number | null } // Mini component to track a single task function TaskTracker({ taskId, onStats, }: { taskId: string onStats: (taskId: string, status: string, eventCount: number) => void }) { const { state } = useBackgroundTask(taskId) const lastReportedRef = useRef({ status: '', eventCount: 0 }) useEffect(() => { if (state) { const currentStatus = state.status const currentEventCount = state.events?.length ?? 0 if ( currentStatus !== lastReportedRef.current.status || currentEventCount !== lastReportedRef.current.eventCount ) { lastReportedRef.current = { status: currentStatus, eventCount: currentEventCount } onStats(taskId, currentStatus, currentEventCount) } } }, [state, taskId, onStats]) if (!state) return null const statusColor = { pending: '#666', running: '#2196F3', completed: '#4CAF50', failed: '#f44336', cancelled: '#ff9800', }[state.status] ?? '#666' return ( <div className={css({ display: 'flex', alignItems: 'center', gap: '8px', padding: '4px 8px', background: '#f5f5f5', borderRadius: '4px', fontSize: '12px', fontFamily: 'monospace', })} > <span className={css({ width: '8px', height: '8px', borderRadius: '50%', background: statusColor, })} /> <span className={css({ color: '#666' })}>{taskId.slice(0, 8)}</span> <span className={css({ color: statusColor, fontWeight: 'bold' })}>{state.status}</span> <span>{state.progress}%</span> <span className={css({ color: '#999' })}>{state.events?.length ?? 0} events</span> </div> ) } export default function StressTestPage() { const [tasks, setTasks] = useState<TaskInfo[]>([]) const [isRunning, setIsRunning] = useState(false) const [isLoading, setIsLoading] = useState(true) const [selectedPreset, setSelectedPreset] = useState<StressPreset>(PRESETS[0]) const [customTaskCount, setCustomTaskCount] = useState(10) const [stats, setStats] = useState<AggregateStats>({ totalTasks: 0, running: 0, completed: 0, failed: 0, cancelled: 0, totalEvents: 0, eventsPerSecond: 0, startTime: null, }) const taskStatsRef = useRef<Map<string, { status: string; eventCount: number }>>(new Map()) const startTimeRef = useRef<number | null>(null) // Load recent tasks on mount (survives page reload) useEffect(() => { async function loadTasks() { try { // Fetch running/pending tasks, plus recent completed ones const res = await fetch('/api/demo/task/list?limit=50') const { tasks: loadedTasks } = await res.json() if (loadedTasks && loadedTasks.length > 0) { const taskInfos: TaskInfo[] = loadedTasks.map( (t: { id: string; createdAt: string | number; input: TaskConfig | null }) => ({ id: t.id, startedAt: typeof t.createdAt === 'string' ? new Date(t.createdAt).getTime() : t.createdAt, config: t.input ?? { duration: 0, eventCount: 0, payloadSizeBytes: 0, shouldFail: false, failAt: 70, }, }) ) setTasks(taskInfos) // Check if any are still running const hasRunning = loadedTasks.some( (t: { status: string }) => t.status === 'running' || t.status === 'pending' ) if (hasRunning) { setIsRunning(true) // Set start time to earliest task const earliest = Math.min(...taskInfos.map((t) => t.startedAt)) startTimeRef.current = earliest } setStats((prev) => ({ ...prev, totalTasks: taskInfos.length, startTime: hasRunning ? Math.min(...taskInfos.map((t) => t.startedAt)) : null, })) } } catch (err) { console.error('Failed to load tasks:', err) } finally { setIsLoading(false) } } loadTasks() }, []) // Callback for task trackers to report their status const handleTaskStats = useCallback((taskId: string, status: string, eventCount: number) => { taskStatsRef.current.set(taskId, { status, eventCount }) // Recalculate aggregate stats let running = 0, completed = 0, failed = 0, cancelled = 0, totalEvents = 0 for (const [, taskStat] of taskStatsRef.current) { totalEvents += taskStat.eventCount switch (taskStat.status) { case 'running': running++ break case 'completed': completed++ break case 'failed': failed++ break case 'cancelled': cancelled++ break } } const elapsed = startTimeRef.current ? (Date.now() - startTimeRef.current) / 1000 : 1 const eventsPerSecond = Math.round(totalEvents / elapsed) setStats((prev) => ({ ...prev, running, completed, failed, cancelled, totalEvents, eventsPerSecond, })) // Check if all tasks are done if ( running === 0 && taskStatsRef.current.size > 0 && taskStatsRef.current.size === completed + failed + cancelled ) { setIsRunning(false) } }, []) const startStressTest = async (preset: StressPreset, taskCount: number) => { setIsRunning(true) setTasks([]) taskStatsRef.current.clear() startTimeRef.current = Date.now() setStats({ totalTasks: taskCount, running: 0, completed: 0, failed: 0, cancelled: 0, totalEvents: 0, eventsPerSecond: 0, startTime: Date.now(), }) // Start all tasks concurrently const newTasks: TaskInfo[] = [] const promises = [] for (let i = 0; i < taskCount; i++) { const config = { ...preset.config } // For mixed failures, randomize the fail point if (preset.name === 'Mixed Failures') { config.shouldFail = Math.random() > 0.5 config.failAt = Math.floor(Math.random() * 80) + 10 // 10-90% } promises.push( fetch('/api/demo/task', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(config), }) .then((res) => res.json()) .then(({ taskId }) => { newTasks.push({ id: taskId, startedAt: Date.now(), config }) }) .catch((err) => console.error('Failed to start task:', err)) ) } await Promise.all(promises) setTasks(newTasks) } const stopAllTasks = async () => { // Note: This would require implementing a bulk cancel endpoint // For now, we just mark as not running setIsRunning(false) } const clearResults = () => { setTasks([]) taskStatsRef.current.clear() setStats({ totalTasks: 0, running: 0, completed: 0, failed: 0, cancelled: 0, totalEvents: 0, eventsPerSecond: 0, startTime: null, }) } // Calculate elapsed time const [elapsed, setElapsed] = useState(0) useEffect(() => { if (!stats.startTime || !isRunning) return const interval = setInterval(() => { setElapsed(Math.floor((Date.now() - stats.startTime!) / 1000)) }, 1000) return () => clearInterval(interval) }, [stats.startTime, isRunning]) return ( <div className={css({ padding: '24px', maxWidth: '900px', margin: '0 auto', fontFamily: 'system-ui, sans-serif', })} data-component="StressTestPage" > <div className={css({ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '8px', })} > <h1 className={css({ fontSize: '24px', fontWeight: 'bold' })}> Background Task Stress Test </h1> <Link href="/demo/tasks" className={css({ fontSize: '14px', color: '#2196F3', textDecoration: 'none', _hover: { textDecoration: 'underline' }, })} > ← Basic Demo </Link> </div> <p className={css({ color: '#666', marginBottom: '24px' })}> Test system limits with concurrent tasks, rapid events, and large payloads. </p> {isLoading && ( <div className={css({ padding: '20px', textAlign: 'center', color: '#666' })}> Loading tasks... </div> )} {/* Presets */} <div className={css({ display: 'grid', gridTemplateColumns: 'repeat(auto-fill, minmax(200px, 1fr))', gap: '12px', marginBottom: '24px', })} data-element="presets" > {PRESETS.map((preset) => ( <button key={preset.name} onClick={() => setSelectedPreset(preset)} disabled={isRunning} className={css({ padding: '12px', background: selectedPreset.name === preset.name ? '#e3f2fd' : '#f5f5f5', border: selectedPreset.name === preset.name ? '2px solid #2196F3' : '2px solid transparent', borderRadius: '8px', textAlign: 'left', cursor: isRunning ? 'not-allowed' : 'pointer', opacity: isRunning ? 0.5 : 1, transition: 'all 0.2s', _hover: { background: isRunning ? undefined : '#e3f2fd', }, })} > <div className={css({ fontWeight: 'bold', marginBottom: '4px' })}>{preset.name}</div> <div className={css({ fontSize: '12px', color: '#666' })}>{preset.description}</div> </button> ))} </div> {/* Controls */} <div className={css({ display: 'flex', alignItems: 'center', gap: '16px', marginBottom: '24px', padding: '16px', background: '#fafafa', borderRadius: '8px', border: '1px solid #eee', flexWrap: 'wrap', })} data-element="controls" > <div className={css({ display: 'flex', alignItems: 'center', gap: '8px' })}> <label className={css({ fontSize: '14px' })}>Tasks:</label> <input type="number" min="1" max="100" value={customTaskCount} onChange={(e) => setCustomTaskCount(Number(e.target.value))} disabled={isRunning} className={css({ width: '70px', padding: '8px', border: '1px solid #ccc', borderRadius: '4px', fontSize: '14px', })} /> </div> <button onClick={() => startStressTest(selectedPreset, customTaskCount)} disabled={isRunning} className={css({ padding: '10px 20px', background: '#4CAF50', color: 'white', border: 'none', borderRadius: '4px', fontSize: '14px', fontWeight: 'bold', cursor: isRunning ? 'not-allowed' : 'pointer', opacity: isRunning ? 0.5 : 1, _hover: { background: '#45a049' }, })} > {isRunning ? 'Running...' : `Start ${selectedPreset.name}`} </button> {tasks.length > 0 && !isRunning && ( <button onClick={clearResults} className={css({ padding: '10px 20px', background: '#9e9e9e', color: 'white', border: 'none', borderRadius: '4px', fontSize: '14px', cursor: 'pointer', _hover: { background: '#757575' }, })} > Clear Results </button> )} </div> {/* Stats Dashboard */} {(tasks.length > 0 || stats.totalTasks > 0) && ( <div className={css({ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(120px, 1fr))', gap: '12px', marginBottom: '24px', })} data-element="stats" > <StatCard label="Total" value={stats.totalTasks} color="#333" /> <StatCard label="Running" value={stats.running} color="#2196F3" /> <StatCard label="Completed" value={stats.completed} color="#4CAF50" /> <StatCard label="Failed" value={stats.failed} color="#f44336" /> <StatCard label="Cancelled" value={stats.cancelled} color="#ff9800" /> <StatCard label="Events" value={stats.totalEvents} color="#9c27b0" /> <StatCard label="Events/s" value={stats.eventsPerSecond} color="#00bcd4" /> <StatCard label="Elapsed" value={`${elapsed}s`} color="#666" /> </div> )} {/* Task List */} {tasks.length > 0 && ( <div className={css({ padding: '16px', background: '#f5f5f5', borderRadius: '8px', maxHeight: '400px', overflow: 'auto', })} data-element="task-list" > <div className={css({ fontWeight: 'bold', marginBottom: '12px' })}> Tasks ({tasks.length}) </div> <div className={css({ display: 'flex', flexWrap: 'wrap', gap: '8px', })} > {tasks.map((task) => ( <TaskTracker key={task.id} taskId={task.id} onStats={handleTaskStats} /> ))} </div> </div> )} {/* Info */} <div className={css({ marginTop: '24px', padding: '16px', background: '#fff3e0', borderRadius: '8px', fontSize: '14px', })} > <strong>Stress Test Scenarios:</strong> <ul className={css({ marginTop: '8px', paddingLeft: '20px' })}> <li> <strong>Concurrent Light/Heavy</strong> - Tests database write contention and Socket.IO room management </li> <li> <strong>Rapid Fire</strong> - Tests event throughput (high events/second) </li> <li> <strong>Large Payloads</strong> - Tests serialization and memory pressure </li> <li> <strong>Event Replay</strong> - Tests replay performance when subscribing to task with many events </li> <li> <strong>Mixed Failures</strong> - Tests error handling under load </li> </ul> </div> </div> ) } function StatCard({ label, value, color, }: { label: string value: number | string color: string }) { return ( <div className={css({ padding: '16px', background: 'white', borderRadius: '8px', textAlign: 'center', boxShadow: '0 1px 3px rgba(0,0,0,0.1)', })} > <div className={css({ fontSize: '24px', fontWeight: 'bold', color })}>{value}</div> <div className={css({ fontSize: '12px', color: '#666', marginTop: '4px' })}>{label}</div> </div> ) } |