iptv/scripts/commands/database/update.js

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const { db, store, parser, file, logger } = require('../../core')
const _ = require('lodash')
const LOGS_DIR = process.env.LOGS_DIR || 'scripts/logs/cluster/load'
async function main() {
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const streams = await loadStreams()
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const results = await loadResults()
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const origins = await loadOrigins(results)
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await updateStreams(streams, results, origins)
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}
main()
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async function updateStreams(items = [], results = {}, origins = {}) {
logger.info('updating streams...')
let buffer = {}
let updated = 0
let removed = 0
for (const item of items) {
const stream = store.create(item)
const result = results[item._id]
if (result) {
const status = parseStatus(result.error)
stream.set('status', { status })
if (result.streams.length) {
const { width, height, bitrate } = parseMediaInfo(result.streams)
stream.set('width', { width })
stream.set('height', { height })
stream.set('bitrate', { bitrate })
}
if (result.requests.length) {
const origin = findOrigin(result.requests, origins)
if (origin) {
stream.set('url', { url: origin })
}
}
}
if (buffer[stream.get('url')]) {
await db.streams.remove({ _id: stream.get('_id') })
removed++
} else if (stream.changed) {
await db.streams.update({ _id: stream.get('_id') }, stream.data())
buffer[stream.get('url')] = true
updated++
}
}
db.streams.compact()
logger.info(`updated ${updated} streams`)
logger.info(`removed ${removed} duplicates`)
logger.info('done')
}
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async function loadStreams() {
logger.info('loading streams...')
await db.streams.load()
const streams = await db.streams.find({})
logger.info(`found ${streams.length} streams`)
return streams
}
async function loadResults() {
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logger.info('loading check results...')
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const results = {}
const files = await file.list(`${LOGS_DIR}/cluster_*.log`)
for (const filepath of files) {
const parsed = await parser.parseLogs(filepath)
for (const item of parsed) {
results[item._id] = item
}
}
logger.info(`found ${Object.values(results).length} results`)
return results
}
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async function loadOrigins(results = {}) {
logger.info('loading origins...')
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const origins = {}
for (const { error, requests } of Object.values(results)) {
if (error || !Array.isArray(requests) || !requests.length) continue
let origin = requests.shift()
origin = new URL(origin.url)
for (const request of requests) {
const curr = new URL(request.url)
const key = curr.href.replace(/(^\w+:|^)/, '')
if (!origins[key] && curr.host === origin.host) {
origins[key] = origin.href
}
}
}
logger.info(`found ${_.uniq(Object.values(origins)).length} origins`)
return origins
}
function findOrigin(requests = [], origins = {}) {
if (origins && Array.isArray(requests)) {
requests = requests.map(r => r.url.replace(/(^\w+:|^)/, ''))
for (const url of requests) {
if (origins[url]) {
return origins[url]
}
}
}
return null
}
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function parseMediaInfo(streams) {
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streams = streams.filter(s => s.codec_type === 'video')
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streams = _.orderBy(
streams,
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['height', s => (s.tags && s.tags.variant_bitrate ? parseInt(s.tags.variant_bitrate) : 0)],
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['desc', 'desc']
)
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const data = _.head(streams)
if (data) {
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const bitrate = data.tags && data.tags.variant_bitrate ? parseInt(data.tags.variant_bitrate) : 0
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return { width: data.width, height: data.height, bitrate }
}
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return {}
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}
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function parseStatus(error) {
if (!error) return 'online'
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switch (error) {
case 'Operation timed out':
return 'timeout'
case 'Server returned 403 Forbidden (access denied)':
return 'blocked'
default:
return 'error'
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}
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}