overleaf/services/filestore/app/js/ImageOptimiser.js
2020-01-07 09:24:29 +00:00

41 lines
976 B
JavaScript

const logger = require('logger-sharelatex')
const metrics = require('metrics-sharelatex')
const { callbackify } = require('util')
const safeExec = require('./SafeExec').promises
module.exports = {
compressPng: callbackify(compressPng),
promises: {
compressPng
}
}
async function compressPng(localPath, callback) {
const timer = new metrics.Timer('compressPng')
logger.log({ localPath }, 'optimising png path')
const args = ['optipng', localPath]
const opts = {
timeout: 30 * 1000,
killSignal: 'SIGKILL'
}
try {
await safeExec(args, opts)
timer.done()
logger.log({ localPath }, 'finished compressing png')
} catch (err) {
if (err.code === 'SIGKILL') {
logger.warn(
{ err, stderr: err.stderr, localPath },
'optimiser timeout reached'
)
} else {
logger.err(
{ err, stderr: err.stderr, localPath },
'something went wrong compressing png'
)
throw err
}
}
}