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Sleeping
File size: 5,727 Bytes
216c0a4 | 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 | const fs = require('fs');
const path = require('path');
const readline = require('readline');
const puppeteer = require('puppeteer');
const os = require('os');
let browserPromise = null;
let userDataDir = null;
function chromeTmpRoot() {
return process.env.CHROMIUM_TMP || (fs.existsSync('/dev/shm') ? '/dev/shm/chartpipeline_chromium' : path.join(os.tmpdir(), 'chartpipeline_chromium'));
}
function getBrowser() {
if (!browserPromise) {
const baseTmp = chromeTmpRoot();
fs.mkdirSync(baseTmp, { recursive: true });
const cacheDir = path.join(baseTmp, 'cache');
const mediaCacheDir = path.join(baseTmp, 'media_cache');
const crashDir = path.join(baseTmp, 'crash');
fs.mkdirSync(cacheDir, { recursive: true });
fs.mkdirSync(mediaCacheDir, { recursive: true });
fs.mkdirSync(crashDir, { recursive: true });
userDataDir = fs.mkdtempSync(path.join(baseTmp, 'puppeteer_profile_'));
const launchOpts = {
headless: 'new',
args: [
'--no-sandbox',
'--disable-setuid-sandbox',
`--user-data-dir=${userDataDir}`,
`--disk-cache-dir=${cacheDir}`,
`--media-cache-dir=${mediaCacheDir}`,
`--crash-dumps-dir=${crashDir}`
]
};
if (process.env.PUPPETEER_EXECUTABLE_PATH) {
launchOpts.executablePath = process.env.PUPPETEER_EXECUTABLE_PATH;
}
browserPromise = puppeteer.launch(launchOpts);
}
return browserPromise;
}
async function waitSvgReady(page) {
const svgReady = () => page.evaluate(() => {
const hasReadySvg = (svg) => {
if (!svg || svg.childNodes.length === 0) return false;
return svg.querySelectorAll('path, circle, rect, g, text').length > 0;
};
const chartSvg = document.querySelector('#chart-container svg');
if (hasReadySvg(chartSvg)) return true;
for (const selector of ['#svg-output', '#manual-svg-output']) {
const output = document.querySelector(selector);
if (output && output.innerHTML.trim() && output.querySelector('svg')) return true;
}
return false;
});
const waitStart = Date.now();
while (Date.now() - waitStart < 3000 && !(await svgReady())) {
await new Promise(resolve => setTimeout(resolve, 100));
}
}
async function extractSvgContent(page, outputSvg, width, height) {
const isECharts = await page.evaluate(() => typeof echarts !== 'undefined');
let svgContent = null;
if (isECharts) {
svgContent = await page.evaluate(() => {
const svgOutput = document.querySelector('#svg-output');
return svgOutput ? svgOutput.innerHTML : null;
});
}
if (!svgContent) {
svgContent = await page.evaluate(() => {
const container = document.querySelector('#chart-container');
if (!container) return null;
const hasGraphicElements = (svg) => (
svg && svg.childNodes.length > 0 &&
svg.querySelectorAll('path, circle, rect, g, text, line, polygon, polyline, ellipse, image').length > 0
);
const svgElement = Array.from(container.querySelectorAll('svg')).find(hasGraphicElements);
if (!svgElement || svgElement.childNodes.length === 0) return null;
if (typeof echarts !== 'undefined') {
const chart = echarts.getInstanceByDom(container);
if (chart) chart.setOption({ animation: false });
}
const svgClone = svgElement.cloneNode(true);
if (!svgClone.hasAttribute('width')) {
svgClone.setAttribute('width', container.clientWidth);
}
if (!svgClone.hasAttribute('height')) {
svgClone.setAttribute('height', container.clientHeight);
}
if (!svgClone.hasAttribute('viewBox')) {
svgClone.setAttribute('viewBox', `0 0 ${container.clientWidth} ${container.clientHeight}`);
}
return svgClone.outerHTML;
});
}
if (!svgContent) {
await new Promise(resolve => setTimeout(resolve, 500));
const pngPath = outputSvg.replace('.svg', '.png');
await page.screenshot({ path: pngPath, fullPage: true });
const pngFileName = path.basename(pngPath);
svgContent = `<svg width="${width}" height="${height}" xmlns="http://www.w3.org/2000/svg">
<title>Chart (Fallback)</title>
<desc>This is a fallback SVG using a PNG screenshot.</desc>
<image href="${pngFileName}" width="${width}" height="${height}" />
</svg>`;
}
return svgContent;
}
async function render(req) {
const browser = await getBrowser();
const page = await browser.newPage();
try {
await page.setViewport({ width: req.width, height: req.height });
await page.goto('file://' + path.resolve(req.htmlFile), {
waitUntil: 'networkidle0',
timeout: 60000
});
await waitSvgReady(page);
const svgContent = await extractSvgContent(page, req.outputSvg, req.width, req.height);
if (!svgContent) {
throw new Error('SVG content is empty');
}
fs.writeFileSync(req.outputSvg, svgContent);
return { id: req.id, ok: true };
} finally {
await page.close();
}
}
const rl = readline.createInterface({ input: process.stdin });
rl.on('line', (line) => {
if (!line.trim()) return;
const req = JSON.parse(line);
render(req)
.then(resp => process.stdout.write(JSON.stringify(resp) + '\n'))
.catch(error => {
process.stdout.write(JSON.stringify({
id: req.id,
ok: false,
error: error && error.stack ? error.stack : String(error)
}) + '\n');
});
});
async function shutdown() {
if (browserPromise) {
const browser = await browserPromise;
await browser.close();
}
if (userDataDir) {
fs.rmSync(userDataDir, { recursive: true, force: true });
}
process.exit(0);
}
process.on('SIGTERM', shutdown);
process.on('SIGINT', shutdown);
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