Various cryptic issues that had no usefull debug output.
ngx-translates "translate" directive was causing Firefox ESR
to jump in the "drainMicroTaskQueue" infinite recursion when
using the directive in the same component as nGrid.
Therefore, I changed all uses of the translate directive
to the pipe (arround 700 or so, regex is my best friend now)
open todo: adjust the linter that we may never use the translate
directive again.
There was another cryptic issue with the current version
of exceljs which was also causing firefox to go crash
when loading a workbook object. It was sufficient to
have any Workbook() function declared in a module to cause
firefox to crash.
Updates Angular to version 9.1
Updates most-to-all npm components
Removes deprecated components and npm commands
Updates travis node version
Adjust the whole code base to angular 9 standard
Increase TypeScipt version to 3.8
Since channels_redis does not support dedicated read-redis instances, the
autoupdate message may be received before the data was replicated. All workers
read the autoupdate message from the write host, so there is a race between
getting this message and a finished replication. For large payloads, the
replication is slower in the most cases (even more in a distributed setup, where
the master and replica are on different nodes). The easy way is to wait for
replication. But there is one difficulty: The number of replicas has to be
known. There is a new settings-variable "AMOUNT_REPLICAS" which defaults to 1.
It needs to be set correctly! If it is too high, every autoupdate will be
delayed by 1 seconds because of a timeout witing for non-existent replicas. If
it is too low, some autoupdates may be wrong (and not detectable by the client!)
becuase of reading from non-synchronised relicas.
The other possibility is to fork channel_redis and add the feature of a
read-only redis. This ould help, because on a single redis instance all commands
are ordered: First, the data is synced, then the autoupdate message. Attention:
This means, if redis-replicas are scaled up, one must make sure to read from the
same instance. I think this is not possible in the way how dockers overlay
networks work. The only way would be to open one connection and reuse the
connection from channels_redis in OpenSlides. This would mean a heavy
integration of channels_redis (meaning including the source code in our repo).
For the first fix, this one is easy and should work.
adds a "is present" toggle to the user menu
Refactor user menu into own component
Add a config variable to determine if the user is allowed
to set themselve as present
