[API] Defined QgsApplication::applicationFullName() and use it in Postgres and Server (Request in QGIS)

[qgis-bot]

Request for documentation

From pull request qgis/QGIS#51470
Author: @rldhont
QGIS version: 3.30

[API] Defined QgsApplication::applicationFullName() and use it in Postgres and Server

PR Description:

the QgsApplication::applicationFullName() static method returns the QGIS application full name.

It can be defined by the environment variable QGIS_APPLICATION_FULL_NAME or the /qgis/application_full_name
in the QGIS config file.

By default it is equal to QgsApplication::applicationName()+' '+QgsApplication::platform()

Using QgsApplication::applicationFullName for PostgreSQL application_name.

For QGIS Server defining QGIS_SERVER_APPLICATION_NAME variable. The QGIS_SERVER_APPLICATION_NAME variable can be used instead of QGIS_APPLICATION_FULL_NAME.

For QGIS Server Logger using QGIS Server application name by default log tag.

Funded by 3liz https://3liz.com

Commits tagged with [need-docs] or [FEATURE]

[Gustry]

The server part is done in PR #8460

I'm not sure about the desktop side ? There are some many configs available in the INI file ( QGIS desktop → General QGIS properties → Advanced → I will be careful I promise)

For desktop, there isn't for now a table showing all environment variables in https://docs.qgis.org/3.28/en/docs/user_manual/introduction/qgis_configuration.html#command-line-and-environment-variables similar to the one for QGIS server https://docs.qgis.org/3.28/en/docs/server_manual/config.html#environment-variables

[DelazJ]

For desktop, there isn't for now a table showing all environment variables in https://docs.qgis.org/3.28/en/docs/user_manual/introduction/qgis_configuration.html#command-line-and-environment-variables similar to the one for QGIS server https://docs.qgis.org/3.28/en/docs/server_manual/config.html#environment-variables

We can consider adding one there but it needs someone pointing us to the place they are mentioned in code repo and their details (meaning, default value, scope,...) Or a way to generate the list. Otherwise I don't see how further we can go with this report.