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'use strict'
const async = require('async')
const pluck = require('lodash-node/compat/collection/pluck')
const constants = require('../initializers/constants')
const logger = require('../helpers/logger')
const Pods = require('../models/pods')
const PoolRequests = require('../models/poolRequests')
const requests = require('../helpers/requests')
const Videos = require('../models/videos')
let timer = null
const poolRequests = {
activate: activate,
addRequest: addRequest,
deactivate: deactivate,
forceSend: forceSend
}
function activate () {
logger.info('Pool requests activated.')
timer = setInterval(makePoolRequests, constants.INTERVAL)
}
function addRequest (id, type, request) {
logger.debug('Add request to the pool requests.', { id: id, type: type, request: request })
PoolRequests.findById(id, function (err, entity) {
if (err) {
logger.error('Cannot find one pool request.', { error: err })
return // Abort
}
if (entity) {
if (entity.type === type) {
logger.error('Cannot insert two same requests.')
return // Abort
}
// Remove the request of the other type
PoolRequests.removeRequestById(id, function (err) {
if (err) {
logger.error('Cannot remove a pool request.', { error: err })
return // Abort
}
})
} else {
PoolRequests.create(id, type, request, function (err) {
if (err) logger.error('Cannot create a pool request.', { error: err })
return // Abort
})
}
})
}
function deactivate () {
logger.info('Pool requests deactivated.')
clearInterval(timer)
}
function forceSend () {
logger.info('Force pool requests sending.')
makePoolRequests()
}
// ---------------------------------------------------------------------------
module.exports = poolRequests
// ---------------------------------------------------------------------------
function makePoolRequest (type, requests_to_make, callback) {
if (!callback) callback = function () {}
Pods.list(function (err, pods) {
if (err) return callback(err)
const params = {
encrypt: true,
sign: true,
method: 'POST',
path: null,
data: requests_to_make
}
if (type === 'add') {
params.path = '/api/' + constants.API_VERSION + '/remotevideos/add'
} else if (type === 'remove') {
params.path = '/api/' + constants.API_VERSION + '/remotevideos/remove'
} else {
return callback(new Error('Unkown pool request type.'))
}
const bad_pods = []
const good_pods = []
requests.makeMultipleRetryRequest(params, pods, callbackEachPodFinished, callbackAllPodsFinished)
function callbackEachPodFinished (err, response, body, url, pod, callback_each_pod_finished) {
if (err || (response.statusCode !== 200 && response.statusCode !== 204)) {
bad_pods.push(pod._id)
logger.error('Error sending secure request to %s pod.', url, { error: err || new Error('Status code not 20x') })
} else {
good_pods.push(pod._id)
}
return callback_each_pod_finished()
}
function callbackAllPodsFinished (err) {
if (err) return callback(err)
updatePodsScore(good_pods, bad_pods)
callback(null)
}
})
}
function makePoolRequests () {
logger.info('Making pool requests to friends.')
PoolRequests.list(function (err, pool_requests) {
if (err) {
logger.error('Cannot get the list of pool requests.', { err: err })
return // Abort
}
if (pool_requests.length === 0) return
const requests_to_make = {
add: {
ids: [],
requests: []
},
remove: {
ids: [],
requests: []
}
}
async.each(pool_requests, function (pool_request, callback_each) {
if (pool_request.type === 'add') {
requests_to_make.add.requests.push(pool_request.request)
requests_to_make.add.ids.push(pool_request._id)
} else if (pool_request.type === 'remove') {
requests_to_make.remove.requests.push(pool_request.request)
requests_to_make.remove.ids.push(pool_request._id)
} else {
logger.error('Unkown pool request type.', { request_type: pool_request.type })
return // abort
}
callback_each()
}, function () {
// Send the add requests
if (requests_to_make.add.requests.length !== 0) {
makePoolRequest('add', requests_to_make.add.requests, function (err) {
if (err) logger.error('Errors when sent add pool requests.', { error: err })
PoolRequests.removeRequests(requests_to_make.add.ids)
})
}
// Send the remove requests
if (requests_to_make.remove.requests.length !== 0) {
makePoolRequest('remove', requests_to_make.remove.requests, function (err) {
if (err) logger.error('Errors when sent remove pool requests.', { error: err })
PoolRequests.removeRequests(requests_to_make.remove.ids)
})
}
})
})
}
function removeBadPods () {
Pods.findBadPods(function (err, pods) {
if (err) {
logger.error('Cannot find bad pods.', { error: err })
return // abort
}
if (pods.length === 0) return
const urls = pluck(pods, 'url')
const ids = pluck(pods, '_id')
Videos.removeAllRemotesOf(urls, function (err, r) {
if (err) {
logger.error('Cannot remove videos from a pod that we removing.', { error: err })
} else {
const videos_removed = r.result.n
logger.info('Removed %d videos.', videos_removed)
}
Pods.removeAllByIds(ids, function (err, r) {
if (err) {
logger.error('Cannot remove bad pods.', { error: err })
} else {
const pods_removed = r.result.n
logger.info('Removed %d pods.', pods_removed)
}
})
})
})
}
function updatePodsScore (good_pods, bad_pods) {
logger.info('Updating %d good pods and %d bad pods scores.', good_pods.length, bad_pods.length)
Pods.incrementScores(good_pods, constants.PODS_SCORE.BONUS, function (err) {
if (err) logger.error('Cannot increment scores of good pods.')
})
Pods.incrementScores(bad_pods, constants.PODS_SCORE.MALUS, function (err) {
if (err) logger.error('Cannot increment scores of bad pods.')
removeBadPods()
})
}
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