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import * as Sequelize from 'sequelize'
import { database as db } from '../../initializers/database'
import { AbstractRequestScheduler, RequestsObjects } from './abstract-request-scheduler'
import {
REQUESTS_VIDEO_EVENT_LIMIT_PODS,
REQUESTS_VIDEO_EVENT_LIMIT_PER_POD,
REQUEST_VIDEO_EVENT_ENDPOINT
} from '../../initializers'
import { RequestsVideoEventGrouped } from '../../models'
import { RequestVideoEventType, RemoteVideoEventRequest, RemoteVideoEventType } from '../../../shared'
export type RequestVideoEventSchedulerOptions = {
type: RequestVideoEventType
videoId: number
count?: number
transaction?: Sequelize.Transaction
}
class RequestVideoEventScheduler extends AbstractRequestScheduler<RequestsVideoEventGrouped> {
constructor () {
super()
// We limit the size of the requests
this.limitPods = REQUESTS_VIDEO_EVENT_LIMIT_PODS
this.limitPerPod = REQUESTS_VIDEO_EVENT_LIMIT_PER_POD
this.description = 'video event requests'
}
getRequestModel () {
return db.RequestVideoEvent
}
getRequestToPodModel () {
return db.RequestVideoEvent
}
buildRequestsObjects (eventRequests: RequestsVideoEventGrouped) {
const requestsToMakeGrouped: RequestsObjects<RemoteVideoEventRequest> = {}
/* Example:
{
pod1: {
video1: { views: 4, likes: 5 },
video2: { likes: 5 }
}
}
*/
const eventsPerVideoPerPod: {
[ podId: string ]: {
[ videoUUID: string ]: {
views?: number
likes?: number
dislikes?: number
}
}
} = {}
// We group video events per video and per pod
// We add the counts of the same event types
for (const toPodId of Object.keys(eventRequests)) {
for (const eventToProcess of eventRequests[toPodId]) {
if (!eventsPerVideoPerPod[toPodId]) eventsPerVideoPerPod[toPodId] = {}
if (!requestsToMakeGrouped[toPodId]) {
requestsToMakeGrouped[toPodId] = {
toPod: eventToProcess.pod,
endpoint: REQUEST_VIDEO_EVENT_ENDPOINT,
ids: [], // request ids, to delete them from the DB in the future
datas: [] // requests data
}
}
requestsToMakeGrouped[toPodId].ids.push(eventToProcess.id)
const eventsPerVideo = eventsPerVideoPerPod[toPodId]
const uuid = eventToProcess.video.uuid
if (!eventsPerVideo[uuid]) eventsPerVideo[uuid] = {}
const events = eventsPerVideo[uuid]
if (!events[eventToProcess.type]) events[eventToProcess.type] = 0
events[eventToProcess.type] += eventToProcess.count
}
}
// Now we build our requests array per pod
for (const toPodId of Object.keys(eventsPerVideoPerPod)) {
const eventsForPod = eventsPerVideoPerPod[toPodId]
for (const uuid of Object.keys(eventsForPod)) {
const eventsForVideo = eventsForPod[uuid]
for (const eventType of Object.keys(eventsForVideo)) {
requestsToMakeGrouped[toPodId].datas.push({
data: {
uuid,
eventType: eventType as RemoteVideoEventType,
count: +eventsForVideo[eventType]
}
})
}
}
}
return requestsToMakeGrouped
}
createRequest ({ type, videoId, count, transaction }: RequestVideoEventSchedulerOptions) {
if (count === undefined) count = 1
const dbRequestOptions: Sequelize.CreateOptions = {}
if (transaction) dbRequestOptions.transaction = transaction
const createQuery = {
type,
count,
videoId
}
return db.RequestVideoEvent.create(createQuery, dbRequestOptions)
}
}
// ---------------------------------------------------------------------------
export {
RequestVideoEventScheduler
}
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