Andrew Rumble
d748d8d606
[web] last infrastructure conversions GitOrigin-RevId: 68aa11625a9bc6d0d5324ecd95bb5ac52af8ee96
58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
import { SystemMessage } from '../../models/SystemMessage.mjs'
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import { addRequiredCleanupHandlerBeforeDrainingConnections } from '../../infrastructure/GracefulShutdown.mjs'
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import { callbackifyAll } from '@overleaf/promise-utils'
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import logger from '@overleaf/logger'
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const SystemMessageManager = {
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_cachedMessages: [],
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getMessages() {
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return this._cachedMessages
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},
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async getMessagesFromDB() {
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return await SystemMessage.find({}).exec()
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},
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async clearMessages() {
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await SystemMessage.deleteMany({}).exec()
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await this.refreshCache()
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},
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async createMessage(content) {
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const message = new SystemMessage({ content })
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await message.save()
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await this.refreshCache()
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},
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async refreshCache() {
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this._cachedMessages = await this.getMessagesFromDB()
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},
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refreshCacheInBackground() {
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this.refreshCache().catch(err => {
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logger.warn({ err }, 'failed to refresh system messages cache')
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})
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},
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}
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const CACHE_TIMEOUT = 10 * 1000 * (Math.random() + 2) // 20-30 seconds
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SystemMessageManager.refreshCacheInBackground()
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const intervalHandle = setInterval(
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() => SystemMessageManager.refreshCacheInBackground(),
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CACHE_TIMEOUT
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)
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addRequiredCleanupHandlerBeforeDrainingConnections(
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'update system messages',
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() => {
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clearInterval(intervalHandle)
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}
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)
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export default {
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getMessages: SystemMessageManager.getMessages.bind(SystemMessageManager),
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...callbackifyAll(SystemMessageManager, { without: ['getMessages'] }),
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promises: SystemMessageManager,
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}
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