matty/peertube-plugin-livechat
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Chat Federation: some data caching to reduce disk load.

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This commit is contained in:
John Livingston 2023-04-21 12:25:00 +02:00
parent 333590defd
commit 732138e745
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GPG Key ID: B17B5640CE66CDBC
1 changed files with 20 additions and 2 deletions
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22
server/lib/federation/storage.ts
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@ -17,6 +17,8 @@ If a file exists, it means the video has a chat.
The file itself contains the JSON LiveChatInfos object.
*/
const cache: Map<string, LiveChatJSONLDAttribute> = new Map<string, LiveChatJSONLDAttribute>()
/**
* This function stores remote LiveChat infos that are contained in ActivityPub objects.
* We store these data for remotes videos.
@ -36,6 +38,8 @@ async function storeVideoLiveChatInfos (
): Promise<void> {
const logger = options.peertubeHelpers.logger
cache.delete(video.url)
const remote = video.remote
const filePath = await _getFilePath(options, remote, video.uuid, video.url)
if (!filePath) {
@ -48,11 +52,15 @@ async function storeVideoLiveChatInfos (
if (!liveChatInfos) {
logger.debug(`${remote ? 'Remote' : 'Local'} video ${video.uuid} has no chat infos, removing if necessary`)
await _del(options, filePath)
// Delete the cache again, just in case.
cache.delete(video.url)
return
}
logger.debug(`${remote ? 'Remote' : 'Local'} video ${video.uuid} has chat infos to store`)
await _store(options, filePath, liveChatInfos)
// Delete the cache again... in case a read failed because we were writing at the same time.
cache.delete(video.url)
}
/**
@ -66,17 +74,27 @@ async function getVideoLiveChatInfos (
video: MVideoFullLight | MVideoAP | Video | MVideoThumbnail
): Promise<LiveChatJSONLDAttribute> {
const logger = options.peertubeHelpers.logger
const cached = cache.get(video.url)
if (cached !== undefined) { return cached }
const remote = ('remote' in video) ? video.remote : !video.isLocal
const filePath = await _getFilePath(options, remote, video.uuid, video.url)
if (!filePath) {
logger.error('Cant compute the file path for storing liveChat infos for video ' + video.uuid)
cache.set(video.url, false)
return false
}
const content = await _get(options, filePath)
if (content === null) { return false }
if (content === null) {
cache.set(video.url, false)
return false
}
// We must sanitize here, in case a previous plugin version did not sanitize enougth.
return sanitizePeertubeLiveChatInfos(content)
const r = sanitizePeertubeLiveChatInfos(content)
cache.set(video.url, r)
return r
}
async function _getFilePath (