Chat DM throwing back-end exception appearing on client as Not Found

merefield · January 22, 2024, 9:01am

Hey guys, I believe I’m getting an intermittent issue on Chat since updating this weekend:

This happens sometimes when entering a DM, e.g. by hitting the Chat button on a Users Card:

`PUT https://mysite.com/chat/api/channels/10/read/458 404 (Not Found)

f @ ajax.js:173`

I did a little investigation and I believe the back end is throwing this:

discourse/discourse/blob/b3904eab456f1574431761d18a5e27fc648b2c10/plugins/chat/app/controllers/chat/api/reads_controller.rb#L12


      
          
          class Chat::Api::ReadsController < Chat::ApiController
            def update
              params.require(%i[channel_id message_id])
          
              with_service(Chat::UpdateUserLastRead) do
                on_failed_policy(:ensure_message_id_recency) do
                  raise Discourse::InvalidParameters.new(:message_id)
                end
                on_model_not_found(:message) { raise Discourse::NotFound }
                on_model_not_found(:active_membership) { raise Discourse::NotFound }
                on_model_not_found(:channel) { raise Discourse::NotFound }
              end
            end
          
            def update_all
              with_service(Chat::MarkAllUserChannelsRead) do
                on_success do
                  render(json: success_json.merge(updated_memberships: result.updated_memberships))
                end
              end

merefield · January 22, 2024, 9:09am

FYI I can reproduce on Meta:

merefield · January 22, 2024, 12:46pm

STR reliably:

Using anyone’s User Card, hit “Chat”
Send them a message
Close the Chat Window completely
Hit the Chat icon and open the same DM
Exception shows in Browser.

Observation: a browser refresh initially prevents the exception.

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Chat DM throwing back-end exception appearing on client as Not Found

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