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| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta name="color-scheme" content="light dark"> | |
| <title>Simple OCR Load Tester</title> | |
| <style> | |
| body { | |
| box-sizing: border-box; | |
| block-size: 100dvh; | |
| margin: 0; | |
| padding: 0.5rem; | |
| font-family: monospace; | |
| } | |
| div { | |
| margin-block-end: 0.25rem; | |
| } | |
| #stats { | |
| padding: 0.25rem; | |
| border: 1px solid gray; | |
| } | |
| .success { | |
| color: green; | |
| } | |
| .fail { | |
| color: red; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>OCR API Load Tester (Complex Text)</h1> | |
| <div> | |
| <label> | |
| API URL: <input type="text" id="apiUrl" value="http://localhost:3000/" style="width: 300px;"> | |
| </label> | |
| <br> | |
| <label> | |
| Requests: <input type="number" id="reqCount" value="100" style="width: 80px;"> | |
| </label> | |
| <br> | |
| <label> | |
| Chars per Image: <input type="number" id="charCount" value="1000" style="width: 80px;"> | |
| </label> | |
| <br> | |
| <button onclick="startTest()">Start Test</button> | |
| </div> | |
| <div id="stats"> | |
| <strong>Status:</strong> <span id="statusText">Idle</span> | |
| <br> | |
| <strong>Average Duration:</strong> <span id="avgTime">--</span>ms | |
| </div> | |
| <div id="logs"></div> | |
| <script> | |
| // Helper: Generate random string | |
| function generateRandomString(length) { | |
| const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 '; | |
| let result = ''; | |
| for (let i = 0; i < length; i++) { | |
| result += characters.charAt(Math.floor(Math.random() * characters.length)); | |
| } | |
| return result; | |
| } | |
| // Helper: Create Blob from Canvas with wrapped text | |
| function generateComplexImageBlob(text) { | |
| return new Promise((resolve) => { | |
| const canvas = document.createElement('canvas'); | |
| // Larger canvas for more text | |
| canvas.width = 800; | |
| canvas.height = 600; | |
| const ctx = canvas.getContext('2d'); | |
| // White background | |
| ctx.fillStyle = '#ffffff'; | |
| ctx.fillRect(0, 0, canvas.width, canvas.height); | |
| // Text settings | |
| ctx.font = '14px monospace'; | |
| ctx.fillStyle = '#000000'; | |
| // Simple text wrapping logic | |
| const lineHeight = 20; | |
| const x = 10; | |
| let y = 30; | |
| const maxWidth = 780; | |
| const words = text.split(''); | |
| let line = ''; | |
| for (let n = 0; n < words.length; n++) { | |
| const testLine = line + words[n]; | |
| const metrics = ctx.measureText(testLine); | |
| const testWidth = metrics.width; | |
| if (testWidth > maxWidth && n > 0) { | |
| ctx.fillText(line, x, y); | |
| line = words[n]; | |
| y += lineHeight; | |
| } else { | |
| line = testLine; | |
| } | |
| } | |
| ctx.fillText(line, x, y); | |
| canvas.toBlob((blob) => { | |
| resolve(blob); | |
| }, 'image/png'); | |
| }); | |
| } | |
| // biome-ignore lint: used. | |
| async function startTest() { | |
| const apiUrl = document.getElementById('apiUrl').value; | |
| const reqCount = parseInt(document.getElementById('reqCount').value, 10); | |
| const charCount = parseInt(document.getElementById('charCount').value, 10); | |
| const logsDiv = document.getElementById('logs'); | |
| const statusText = document.getElementById('statusText'); | |
| const avgTimeSpan = document.getElementById('avgTime'); | |
| // Reset UI | |
| logsDiv.innerHTML = ''; | |
| avgTimeSpan.innerText = '---'; | |
| statusText.innerText = `Running ${reqCount} requests...`; | |
| const durations = []; | |
| const sendRequest = async (index) => { | |
| try { | |
| // 1. Generate Content | |
| const randomText = generateRandomString(charCount); | |
| const blob = await generateComplexImageBlob(randomText); | |
| // 2. Send & Measure | |
| const startTime = performance.now(); | |
| const response = await fetch(apiUrl, { | |
| method: 'POST', | |
| headers: { 'Content-Type': 'image/png' }, | |
| body: blob, | |
| }); | |
| const endTime = performance.now(); | |
| const duration = endTime - startTime; | |
| durations.push(duration); | |
| // 3. Log result | |
| const logItem = document.createElement('div'); | |
| if (response.ok) { | |
| logItem.className = 'success'; | |
| logItem.innerText = `[${index}] OK - ${duration.toFixed(2)}ms`; | |
| } else { | |
| logItem.className = 'fail'; | |
| logItem.innerText = `[${index}] FAIL - ${response.status} - ${duration.toFixed(2)}ms`; | |
| } | |
| logsDiv.prepend(logItem); // Newest on top | |
| } catch (error) { | |
| const logItem = document.createElement('div'); | |
| logItem.className = 'fail'; | |
| logItem.innerText = `[${index}] ERROR - ${error.message}`; | |
| logsDiv.prepend(logItem); | |
| } | |
| }; | |
| // Execute all concurrently | |
| const promises = []; | |
| for (let i = 1; i <= reqCount; i++) { | |
| promises.push(sendRequest(i)); | |
| } | |
| await Promise.all(promises); | |
| // Calculate Stats | |
| if (durations.length > 0) { | |
| const total = durations.reduce((a, b) => a + b, 0); | |
| const avg = (total / durations.length).toFixed(2); | |
| avgTimeSpan.innerText = avg; | |
| statusText.innerText = 'Completed'; | |
| } else { | |
| statusText.innerText = 'Completed (No successful timings)'; | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> | |