Files
shields/core/server/log.js
2019-01-16 16:30:18 -05:00

62 lines
1.3 KiB
JavaScript

'use strict'
const Raven = require('raven')
const throttle = require('lodash.throttle')
const listeners = []
// Zero-pad a number in a string.
// eg. 4 becomes 04 but 17 stays 17.
function pad(string) {
string = String(string)
return string.length < 2 ? `0${string}` : string
}
// Compact date representation.
// eg. 0611093840 for June 11, 9:38:40 UTC.
function date() {
const date = new Date()
return (
pad(date.getUTCMonth() + 1) +
pad(date.getUTCDate()) +
pad(date.getUTCHours()) +
pad(date.getUTCMinutes()) +
pad(date.getUTCSeconds())
)
}
module.exports = function log(...msg) {
const d = date()
listeners.forEach(f => f(d, ...msg))
console.log(d, ...msg)
}
const throttledConsoleError = throttle(console.error, 10000, {
trailing: false,
})
module.exports.error = function error(...msg) {
const d = date()
listeners.forEach(f => f(d, ...msg))
Raven.captureException(msg, sendErr => {
if (sendErr) {
throttledConsoleError(
'Failed to send captured exception to Sentry',
sendErr.message
)
}
})
console.error(d, ...msg)
}
module.exports.addListener = function addListener(func) {
listeners.push(func)
}
module.exports.removeListener = function removeListener(func) {
const index = listeners.indexOf(func)
if (index < 0) {
return
}
listeners.splice(index, 1)
}