[QGIS-Developer] QGIS Server 3 status

[Anita Graser]

Great overview, thanks for drafting Régis!

Some additional ideas: Could we add a section with the key improvements
from an user perspective?

I'm particularly intrigued by the services / plugins part. Could you
elaborate?

Regards,
Anita



On Wed, Oct 4, 2017 at 9:42 PM, Régis Haubourg <regis.haubourg at gmail.com>
wrote:

> Hi again,
> here is my very first draft:
>
>  Several images can be pulled from the joined slides given at Foss4G-EU
> here https://drive.google.com/file/d/0BzatQbprJ-
> hjWF95VzdHbGRsVEk/view?usp=sharing
>
> René-Luc, David, Paul, don't hesitate to amend that!
>
> ------------------------------------------------------------
> --------------------------------
>
>
> *Qgis server refactoring is done!*
> As you may know, QGIS is jumping to a new major version (yes!).
> Doing so was made necessary because of the need to switch to python 3,
> QT5, but also because we needed to break the QGIS API in several places.
>
> A year ago, a tiny troll <https://github.com/qgis/qgis3.0_api/issues/63>from
> switzerland rang a bell about the strong need for love server code base
> required.
>
> Indeed, the API was locked by some old methods of QGIS server. In short,
> QGIS server was reparsing the qgs project file in his own way, and created
> dependencies to part of QGIS we needed to drop.
>
> As outsourcing the server code base was not an option, so we had to
> refactor it.
>
> The involved parties decided to get engaged in a code sprint
> <https://github.com/qgis/QGIS/wiki/QGIS3---QGIS-Server-code-sprint-Notes> in
> the city of Lyon , France dedicated to sharing their vision, planning the
> work and finally making all the following
> <https://github.com/qgis/QGIS-Enhancement-Proposals/issues/74> happen :
>
>
>
> *# Deep, complex and unrewarding tasks:*
>
> - Remove all singleton calls
>
> - Cut all the dependencies to the old qgis project parser
>
> - Minimize dependencies to GUI library. Since fonts are necessary to
> render maps, totally removing them was not feasable.
>
> *# Higher level refactoring*
>
> All services (WMS GetMap, WFS GetFeature, GetLegendGraphics, WCS, GetPrint
> etc..) have been rewritten. Some like WMS were entirely rewritten. Kudos to
> the dev's
>
>
> *# New features and architecture stuff*
>
> - QGIS Server Services as plugins like providers. (slide 10 would be a
> nice figure here)
>
> - Multi-thread rendering  <https://github.com/qgis/QGIS/pull/3886>- like
> in the desktop
>
> - A new option to trust layer metadata
> <https://github.com/qgis/QGIS/pull/5094> and speed up project loading
>
>
> *# Infrastructure tasks*
>
> - Build a OGC compliancy platform
> <http://oslandia.com/en/2017/06/16/qgis-server-ogc-cite-compliance-testing/> and
> integrate it to a continuous integration platform. Conformity reports are
> now pushed to tests.qgis.org *XXX waiting for Richard to expose them in
> the website*
>
> - Add unit tests... and again more unit tests
>
> - Stress QGIS server against security leaks
> <http://oslandia.com/en/2017/06/14/qgis-server-security-aspect/> (SQL
> injections and other malicious attacks)
>
> - Start profiling and bench marking performances. This work still need
> some love - and funding - to be achieved
>
>
> A presentation
> <https://git.osgeo.org/gogs/foss4g-europe/foss4g-europe-2017-paris/src/master/presentations/2017-07-20/general_track/foss4g-europe-2017-QGIS_3_Refactoring_and_enhancement-DMarteau-PBlottiere.pdf> was
> given at FOSS4G-EU in July.
>
> *Congratulations* to the developers who worked hard on that work.
>
> Now this deserves to be well tested, please report back any issues!
>
>
>
> 2017-10-04 15:17 GMT+02:00 Anita Graser <anitagraser at gmx.at>:
>
>>
>>
>> On Wed, Oct 4, 2017 at 1:23 PM, Régis Haubourg <regis.haubourg at gmail.com>
>> wrote:
>>
>>> Hi
>>>
>>> Yes, refactoring is now complete! see : https://github.com/qgis/QGIS-E
>>> nhancement-Proposals/issues/74#issuecomment-334123595
>>>
>>> Anita, I'll draft an article tonight if you still agree to review it,
>>> that would be great!
>>>
>>
>>
>> ​Sure!
>>
>> Anita
>>
>>
>>
>>
>>
>
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