[QGIS-Developer] Event to register adding layers in QGIS

[Bo Victor Thomsen]

Hi list -

I have a small "startup.py" project - The goal is to register every time 
a user opens af layer in QGIS in a organization with lots of QGIS users. 
The end goal is to find data sources that are maintained but actually 
not used.

To that purpose I created the following script as a "proof of concept":

*from qgis.core import QgsProject, QgsMessageLog, Qgis, QgsLayerTreeLayer
from datetime import datetime
import os


def onAddedChildren(node, indexFrom, indexTo):

     for i in range(indexFrom, indexTo+1):
         child = node.children()[i]
         if isinstance(child, QgsLayerTreeLayer):
             layer = child.layer()
             name = ''
             uri = ''
             if (layer):
                 name = layer.name()
                 datap = layer.dataProvider()
                 if datap:
                     uri = datap.dataSourceUri()
             strx = 
'"{}";"{}";"{}";"{}";"{}"'.format(datetime.today().strftime('%Y-%m-%d 
%H:%M:%S'),os.getlogin(),child.name(),name,uri)
             with open("d:/tmp/loglag.csv", "a") as g:
                 g.write(strx+'\n')

root = QgsProject.instance().layerTreeRoot()
root.addedChildren.connect(onAddedChildren)
*

(I know - I might into trouble with users appending data to the same 
file at the same time, but that is solveable)

The above script works like a charm, when a user add a single layer 
using the data source manager. But it partially fails when opening a 
project. The layers are registred, but it doesn't register the uri for 
the individual layers. I assume the event "addedChildren" is fired 
before the layers is fully loaded.

So is there some other event I can use to get my full layer info ?

-- 

Med venlig hilsen / Kind regards

Bo Victor Thomsen
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