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LDEV-5260 Rewrite polling to producer-subscriber model

Till now we had "are-learners-answers-updated" polling on controller

level.

It was rewritten to following scenario:

- method which stores learner answers is aware whether answers have

changed, i.e. it knows if charts need to be updated

- it flushes latest data to DB and puts tool content ID to Sink

- Sink notifies all interested Fluxes (currently only charts updating

one, but in the future other ones like updating table with answer % too)

- FluxMap holds a map of tool content ID -> interested hot publisher

Flux

- the Flux checks if it is interested in the tool content ID from the

Sink

- if so, it fetches data from DB and emits it to all subscribers, i.e.

opened monitoring windows with charts displayed

- data is cached so it is immediately available on for the next

subscriber

- data is throttled so calls to DB are not made too often

- if all subscribers are gone, the hot publisher Flux is still active; a

timeout is added which removes it from FluxMap when there were not emits

for the given time

  1. … 6 more files in changeset.
LDEV-5260 Add Reactor library

  1. … 6 more files in changeset.
LDEV-5259 Silence verbose scanner logs

LDEV-4411 Silence cache logs which flood LAMS log files

LDEV-5248 Remove duplicate logging configuration

LDEV-5223 Fix escaped change suggestions in Etherpad comments

LDEV-4411 Use WF provided entity cache configuration

  1. … 3 more files in changeset.
LDEV-4411 Add log configuration to follow cache work

LDEV-4411 Add 2nd level cache configuration to slimmed WildFly config

LDEV-4411 Set up default and immutable 2nd level cache configuration

  1. … 1 more file in changeset.
LDEV-5248, LDEV-4411 Add 2nd level cache to selected elements

Displaying Assessment results is too DB-intense for multiple learners.

We can enable a short-lived query cache for some entities which have

most impact on the results page. This way multiple requests can reuse

same objects from cache and there is little danger of inconsistency.

  1. … 19 more files in changeset.
LDEV-5247 Fix user name parameter processing in Etherpad plugin

LAMS allows apostrophes but not quotation marks in names, so it is safer

to use quotations when operating with javascript.

LDEV-5223 Remove export_authors plugin

It is buggy and does not bring that much value to exports

LDEV-5227 Upgrade Apache POI to 4.1.2 along with its dependencies

  1. … 25 more files in changeset.
LDEV-5223 Abandon ice_tables until it is production ready

LDEV-5223 Discard table non-JSON attributes

LDEV-5223 Ignore intermittent error on 1x1 table creation

LDEV-5223 Fix tables HTML export

LDEV-5223 Add a reminder to install Tidy HTML

LDEV-5223 Remove import widget. Reintroduce HTML export widget.

LDEV-5223 selective exports

    • -0
    • +529
    ./etherpad/etherpad-lite/src/templates/pad.html
LDEV-5223 Prevent ep_resize from rendering short initial Etherpad

  1. … 34 more files in changeset.
LDEV-5223 Add, fix and customise ice_tables plugin

    • -0
    • +26
    ./etherpad/etherpad-lite/node_modules/ep_ice_tables/ep.json
LDEV-5223 Add previewimages plugin

LDEV-5223 ep_image_upload customisations

- css usage in HTML export and timeslider

LDEV-5223 Add export PDF feature to Etherpad

    • -0
    • +1
    ./etherpad/etherpad-lite/settings.json
    • -0
    • +833
    ./etherpad/etherpad-lite/src/node/utils/Settings.js
LDEV-5223 Add image upload plugin to Etherpad

    • -0
    • +14
    ./etherpad/etherpad-lite/settings.json
LDEV-5223 Update readmefile with latest instructions

LDEV-5223 Customise settings JSON file

    • -29
    • +88
    ./etherpad/etherpad-lite/settings.json
LDEV-5223 Rename folder as new version of author_neat plugin is used