add home/notification streaming

This commit is contained in:
Nolan Lawson 2018-02-15 09:02:46 -08:00
parent 1ef3238974
commit 3f264e476c
4 changed files with 104 additions and 32 deletions

View file

@ -6,24 +6,35 @@ import { scheduleIdleTask } from '../_utils/scheduleIdleTask'
import throttle from 'lodash/throttle'
import { mark, stop } from '../_utils/marks'
async function removeDuplicates (instanceName, timelineName, updates) {
// remove duplicates, including duplicates due to reblogs
let timelineItemIds = store.getForTimeline(instanceName, timelineName, 'timelineItemIds') || []
let reblogIds = (await Promise.all(timelineItemIds.map(async timelineItemId => {
async function getReblogIds(instanceName, statusIds) {
let reblogIds = await Promise.all(statusIds.map(async timelineItemId => {
let status = await database.getStatus(instanceName, timelineItemId)
return status.reblog && status.reblog.id
}))).filter(identity)
let existingItemIds = new Set([].concat(timelineItemIds).concat(reblogIds))
}))
return reblogIds.filter(identity)
}
async function getExistingItemIdsSet(instanceName, timelineName) {
let timelineItemIds = store.getForTimeline(instanceName, timelineName, 'timelineItemIds') || []
if (timelineName === 'notifications') {
return new Set(timelineItemIds)
}
let reblogIds = await getReblogIds(instanceName, timelineItemIds)
return new Set([].concat(timelineItemIds).concat(reblogIds))
}
async function removeDuplicates (instanceName, timelineName, updates) {
// remove duplicates, including duplicates due to reblogs
let existingItemIds = await getExistingItemIdsSet(instanceName, timelineName)
return updates.filter(update => !existingItemIds.has(update.id))
}
async function processFreshChanges (instanceName, timelineName) {
mark('processFreshChanges')
let freshChanges = store.getForTimeline(instanceName, timelineName, 'freshChanges')
if (freshChanges.updates && freshChanges.updates.length) {
let updates = freshChanges.updates.slice()
freshChanges.updates = []
store.setForTimeline(instanceName, timelineName, {freshChanges: freshChanges})
async function processFreshUpdates (instanceName, timelineName) {
mark('processFreshUpdates')
let freshUpdates = store.getForTimeline(instanceName, timelineName, 'freshUpdates')
if (freshUpdates && freshUpdates.length) {
let updates = freshUpdates.slice()
store.setForTimeline(instanceName, timelineName, {freshUpdates: []})
updates = await removeDuplicates(instanceName, timelineName, updates)
@ -35,37 +46,54 @@ async function processFreshChanges (instanceName, timelineName) {
console.log('adding ', itemIdsToAdd.length, 'items to itemIdsToAdd')
store.setForTimeline(instanceName, timelineName, {itemIdsToAdd: itemIdsToAdd})
}
stop('processFreshChanges')
stop('processFreshUpdates')
}
}
const lazilyProcessFreshChanges = throttle((instanceName, timelineName) => {
const lazilyProcessFreshUpdates = throttle((instanceName, timelineName) => {
scheduleIdleTask(() => {
processFreshChanges(instanceName, timelineName)
/* no await */ processFreshUpdates(instanceName, timelineName)
})
}, 5000)
function handleStreamMessage (instanceName, timelineName, message) {
mark('handleStreamMessage')
function processUpdate(instanceName, timelineName, update) {
let freshUpdates = store.getForTimeline(instanceName, timelineName, 'freshUpdates') || []
freshUpdates.push(update)
store.setForTimeline(instanceName, timelineName, {freshUpdates: freshUpdates})
lazilyProcessFreshUpdates(instanceName, timelineName)
}
function processDelete(instanceName, deletion) {
// TODO
}
function processMessage (instanceName, timelineName, message) {
mark('processMessage')
let { event, payload } = message
let key = event === 'update' ? 'updates' : 'deletes'
let freshChanges = store.getForTimeline(instanceName, timelineName, 'freshChanges') || {}
freshChanges[key] = freshChanges[key] || []
freshChanges[key].push(JSON.parse(payload))
store.setForTimeline(instanceName, timelineName, {freshChanges: freshChanges})
lazilyProcessFreshChanges(instanceName, timelineName)
stop('handleStreamMessage')
let parsedPayload = JSON.parse(payload)
switch (event) {
case 'delete':
processDelete(instanceName, parsedPayload)
break
case 'update':
processUpdate(instanceName, timelineName, parsedPayload)
break
case 'notification':
processUpdate(instanceName, 'notifications', parsedPayload)
break
}
stop('processMessage')
}
export function createStream (streamingApi, instanceName, accessToken, timelineName) {
return new TimelineStream(streamingApi, accessToken, timelineName, {
onMessage (msg) {
if (msg.event !== 'update' && msg.event !== 'delete') {
if (msg.event !== 'update' && msg.event !== 'delete' && msg.event !== 'notification') {
console.error("don't know how to handle event", msg)
return
}
scheduleIdleTask(() => {
handleStreamMessage(instanceName, timelineName, msg)
processMessage(instanceName, timelineName, msg)
})
},
onOpen () {

View file

@ -178,6 +178,9 @@ async function insertTimelineNotifications (instanceName, timeline, notification
for (let notification of notifications) {
setInCache(notificationsCache, instanceName, notification.id, notification)
setInCache(accountsCache, instanceName, notification.account.id, notification.account)
if (notification.status) {
setInCache(statusesCache, instanceName, notification.status.id, notification.status)
}
}
const db = await getDatabase(instanceName)
let storeNames = [NOTIFICATION_TIMELINES_STORE, NOTIFICATIONS_STORE, ACCOUNTS_STORE, STATUSES_STORE]

View file

@ -1,13 +1,43 @@
import { updateInstanceInfo, updateVerifyCredentialsForInstance } from '../_actions/instances'
import { updateLists } from '../_actions/lists'
import { createStream } from '../_actions/streaming'
export function instanceObservers (store) {
store.observe('currentInstance', (currentInstance) => {
// stream to watch for home timeline updates and notifications
let currentInstanceStream
store.observe('currentInstance', async (currentInstance) => {
if (!process.browser) {
return
}
if (currentInstanceStream) {
currentInstanceStream.close()
currentInstanceStream = null
if (process.env.NODE_ENV !== 'production') {
window.currentInstanceStream = null
}
}
if (!currentInstance) {
return
}
updateVerifyCredentialsForInstance(currentInstance)
updateInstanceInfo(currentInstance)
updateLists()
await updateInstanceInfo(currentInstance)
let instanceInfo = store.get('currentInstanceInfo')
if (!(instanceInfo && store.get('currentInstance') === currentInstance)) {
return
}
let accessToken = store.get('accessToken')
currentInstanceStream = createStream(instanceInfo.urls.streaming_api,
currentInstance, accessToken, 'home')
if (process.env.NODE_ENV !== 'production') {
window.currentInstanceStream = currentInstanceStream
}
})
}

View file

@ -2,6 +2,9 @@ import { updateInstanceInfo } from '../_actions/instances'
import { createStream } from '../_actions/streaming'
export function timelineObservers (store) {
// stream to watch for local/federated/etc. updates. home and notification
// updates are handled in timelineObservers.js
let currentTimelineStream
store.observe('currentTimeline', async (currentTimeline) => {
@ -11,18 +14,21 @@ export function timelineObservers (store) {
if (currentTimelineStream) {
currentTimelineStream.close()
currentTimelineStream = null
if (process.env.NODE_ENV !== 'production') {
window.currentTimelineStream = null
}
}
if (!currentTimeline) {
return
}
if (!(['home', 'local', 'federated'].includes(currentTimeline) ||
currentTimeline.startsWith('list/') ||
currentTimeline.startsWith('tag/'))) {
if (currentTimeline !== 'local' &&
currentTimeline !== 'federated' &&
!currentTimeline.startsWith('list/') &&
!currentTimeline.startsWith('tag/')) {
return
}
let currentInstance = store.get('currentInstance')
let accessToken = store.get('accessToken')
await updateInstanceInfo(currentInstance)
let instanceInfo = store.get('currentInstanceInfo')
if (!(instanceInfo &&
@ -31,7 +37,12 @@ export function timelineObservers (store) {
return
}
let accessToken = store.get('accessToken')
currentTimelineStream = createStream(instanceInfo.urls.streaming_api,
currentInstance, accessToken, currentTimeline)
if (process.env.NODE_ENV !== 'production') {
window.currentTimelineStream = currentTimelineStream
}
})
}