unpkg/server/StatsAPI.js

173 lines
3.8 KiB
JavaScript

const cf = require('./CloudflareAPI')
const db = require('./RedisClient')
const PackageBlacklist = require('./PackageBlacklist').blacklist
function prunePackages(packagesMap) {
PackageBlacklist.forEach(packageName => {
delete packagesMap[packageName]
})
return packagesMap
}
function createDayKey(date) {
return `${date.getUTCFullYear()}-${date.getUTCMonth()}-${date.getUTCDate()}`
}
function createHourKey(date) {
return `${createDayKey(date)}-${date.getUTCHours()}`
}
function createMinuteKey(date) {
return `${createHourKey(date)}-${date.getUTCMinutes()}`
}
function createScoresMap(array) {
const map = {}
for (let i = 0; i < array.length; i += 2) {
map[array[i]] = parseInt(array[i + 1], 10)
}
return map
}
function getScoresMap(key, n = 100) {
return new Promise((resolve, reject) => {
db.zrevrange(key, 0, n, 'withscores', (error, value) => {
if (error) {
reject(error)
} else {
resolve(createScoresMap(value))
}
})
})
}
function getPackageRequests(date, n = 100) {
return getScoresMap(`stats-packageRequests-${createDayKey(date)}`, n).then(
prunePackages
)
}
function getPackageBandwidth(date, n = 100) {
return getScoresMap(`stats-packageBytes-${createDayKey(date)}`, n).then(
prunePackages
)
}
function getProtocolRequests(date) {
return getScoresMap(`stats-protocolRequests-${createDayKey(date)}`)
}
function addDailyMetricsToTimeseries(timeseries) {
const since = new Date(timeseries.since)
return Promise.all([
getPackageRequests(since),
getPackageBandwidth(since),
getProtocolRequests(since)
]).then(results => {
timeseries.requests.package = results[0]
timeseries.bandwidth.package = results[1]
timeseries.requests.protocol = results[2]
return timeseries
})
}
function sumMaps(maps) {
return maps.reduce((memo, map) => {
Object.keys(map).forEach(key => {
memo[key] = (memo[key] || 0) + map[key]
})
return memo
}, {})
}
function addDailyMetrics(result) {
return Promise.all(result.timeseries.map(addDailyMetricsToTimeseries)).then(
() => {
result.totals.requests.package = sumMaps(
result.timeseries.map(timeseries => {
return timeseries.requests.package
})
)
result.totals.bandwidth.package = sumMaps(
result.timeseries.map(timeseries => timeseries.bandwidth.package)
)
result.totals.requests.protocol = sumMaps(
result.timeseries.map(timeseries => timeseries.requests.protocol)
)
return result
}
)
}
function extractPublicInfo(data) {
return {
since: data.since,
until: data.until,
requests: {
all: data.requests.all,
cached: data.requests.cached,
country: data.requests.country,
status: data.requests.http_status
},
bandwidth: {
all: data.bandwidth.all,
cached: data.bandwidth.cached,
country: data.bandwidth.country
},
threats: {
all: data.threats.all,
country: data.threats.country
},
uniques: {
all: data.uniques.all
}
}
}
const DomainNames = ['unpkg.com', 'npmcdn.com']
function fetchStats(since, until) {
return cf.getZones(DomainNames).then(zones => {
return cf.getZoneAnalyticsDashboard(zones, since, until).then(dashboard => {
return {
timeseries: dashboard.timeseries.map(extractPublicInfo),
totals: extractPublicInfo(dashboard.totals)
}
})
})
}
const oneMinute = 1000 * 60
const oneHour = oneMinute * 60
const oneDay = oneHour * 24
function getStats(since, until, callback) {
let promise = fetchStats(since, until)
if (until - since > oneDay) promise = promise.then(addDailyMetrics)
promise.then(value => {
callback(null, value)
}, callback)
}
module.exports = {
createDayKey,
createHourKey,
createMinuteKey,
getStats
}