b20ef95b91
Sometimes a broad distinction of just a channelID or a userID is not enough to efficiently send a websocket event to users. In several cases, depending on the user and channel, we might need to modify the message. Therefore, we introduce the concept of a channel hook that will get executed if the scope is set to a channel. This hook can be populated at the app layer to perform any application specific logic to the event. Care must be taken to avoid race conditions as the passed event is not deep copied. It is left to the user to treat it carefully. For this issue, the main problem was that since we don't know which users have permissions to which channels, we had to go through _all_ members of a channel to figure that out. This was redundant since a large portion of those users might not even be connected at that time. We solve this with the channel hook where we push this check to be performed later while actually sending the event. This reduces the computation to be done only for _connected_ users rather than _all_ users of a channel. The next iteration of this should be to use websocket subscriptions to monitor exactly which users are on that channel to even trim down that list. That is a larger initiative to be taken later. Tested locally with a channel of 50 users. Here are rough results: ``` With PR: patchPost 97ms createPost 90ms Master: patchPost 306ms createPost - 298ms ``` https://mattermost.atlassian.net/browse/MM-42810 ```release-note Improve performance while sending messages with permalinks to channels with large number of users. ``` |
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| e2e-tests | ||
| server | ||
| webapp | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .gitpod.yml | ||
| .nvmrc | ||
| CHANGELOG.md | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| LICENSE.txt | ||
| NOTICE.txt | ||
| README.md | ||
| SECURITY.md | ||
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React and runs as a single Linux binary with MySQL or PostgreSQL. A new compiled version is released under an MIT license every month on the 16th.
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