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109 lines
2.6 KiB
109 lines
2.6 KiB
// Cache ongoing fetching, prevent redundant request
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const pool = require('./live-pool.js')
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const raven = require('./raven.js')
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module.exports = async (service, fn, paramsPath) => {
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const fetchStart = new Date()
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const fetchKey = `#${service}/${paramsPath}`
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if (pool.has(fetchKey)) return pool.get(fetchKey)
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const fetcher = fn(...paramsPath.split('/')).then(
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result => {
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console.log(timeSince(fetchStart), fetchKey)
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return typeof result === 'object' ? result : { failed: true }
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},
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err => errorHandler(service, paramsPath, err)
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).finally(() => {
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pool.delete(fetchKey)
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})
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pool.set(fetchKey, fetcher)
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return fetcher
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}
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const timeSince = startStamp => {
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return String(new Date() - startStamp).padStart(4, ' ') + 'ms'
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}
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const gotErrorHandler = (service, paramsPath, err) => {
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const serviceKey = `/${service}/${paramsPath}`
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let status = 'unknown'
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if (err.statusCode === '404') {
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status = 'not found'
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} else if (err.code === 'ETIMEDOUT') {
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status = 'timeout'
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}
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logError(serviceKey, err, status)
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sendError(serviceKey, err, status)
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return { status, failed: true }
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}
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const errorHandler = (scope, paramsPath, err) => {
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if (err.url) {
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return gotErrorHandler(scope, paramsPath, err)
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}
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let status = 'unknown'
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if (err.response && err.response.status === 404) {
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status = 'not found'
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} else if (err.code === 'ECONNABORTED') {
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status = 'timeout'
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}
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errorLogger(`/${scope}/${paramsPath}`, err, status)
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return { status, failed: true }
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}
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const errorLogger = (serviceKey, err, status) => {
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try {
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if (status === 'unknown') {
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// send to sentry
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raven && raven.captureException(err, {
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tags: {
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serviceKey,
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service: serviceKey.split(' ')[0],
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fetchUrl: err.config.url
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}
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})
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} else {
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// log known error
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printError(serviceKey, status, err)
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}
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} catch (e) {
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printError(serviceKey, status, err)
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console.error('ERR_ON_ERR', e.message)
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}
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}
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// log error
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const logError = (serviceKey, err, status) => {
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console.error(`LIVE_FN_ERR <${status}> ${serviceKey}
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@ ${err.url}
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> [${err.statusCode || err.code}] ${err.message}`)
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}
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// send error to sentry
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const sendError = (serviceKey, err, status) => {
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status === 'unknown' && raven && raven.captureException(err, {
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tags: {
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serviceKey,
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url: err.url
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}
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})
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}
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const printError = (serviceKey, status, err) => {
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let details = err.message
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if (status === 'unknown') {
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details += `\n ${err.stack}`.replace(/^/mg, ' ')
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}
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const url = (err.config && err.config.url) || ''
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console.error(`LIVE_FN_ERR <${status}> ${serviceKey} > ${url}\n`, details)
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}
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