45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
/* eslint no-unused-vars: ["error", { "varsIgnorePattern": "newrelic" }] */
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try {
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const newrelic = require('newrelic')
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} catch (e) {
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console.error('WARNING unable to load newrelic')
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}
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const express = require('express')
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const uuid = require('uuid/v4')
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const sanitize = require('sanitize-filename')
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const Canvas = require('canvas')
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const Fox = require('./js/fox.js')
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const renderFox = require('./js/render-fox.js')
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function composeImage (width, height, seed) {
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seed = seed || uuid()
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const fox = Fox(width, height, seed)
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const canvas = new Canvas(width, height)
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renderFox(canvas, fox)
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return canvas
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};
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const cacheTimeout = 60 * 60 * 24 * 30
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const app = express()
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app.get('/healthcheck', (req, res) => {
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res.status(200).end()
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})
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app.get('/:width/:seed', (req, res) => {
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let width = parseInt(req.params.width) || 400
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if (width > 400) width = 400
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const seed = sanitize(req.params.seed) || uuid()
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const canvas = composeImage(width, width, seed)
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const buffer = canvas.toBuffer()
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res.set('Cache-Control', 'max-age=' + cacheTimeout)
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res.set('Content-length', buffer.length)
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res.type('png')
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res.end(buffer, 'binary')
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})
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module.exports = app
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