More server warnings on transformation errors

qgis · May 25, 2021 · dfaafa6 · dfaafa6
1 parent 8ac4a73
commit dfaafa6
Showing 1 changed file with 21 additions and 4 deletions.
diff --git a/src/server/qgsserver.cpp b/src/server/qgsserver.cpp
@@ -233,10 +233,19 @@ bool QgsServer::init()
       const QgsCoordinateReferenceSystem & destinationCrs,
       const QgsDatumTransform::TransformDetails & details )
   {
-    QgsServerLogger::instance()->logMessage( QStringLiteral( "Cannot use project transform between %1 and %2 - %3" )
+    QString gridMessage;
+    for ( const QgsDatumTransform::GridDetails &grid : details.grids )
+    {
+      if ( !grid.isAvailable )
+      {
+        gridMessage.append( QStringLiteral( "This transformation requires the grid file '%1', which is not available for use on the system.\n" ).arg( grid.shortName ) );
+      }
+    }
+    QgsServerLogger::instance()->logMessage( QStringLiteral( "Cannot use project transform between %1 and %2 - %3.\n%4" )
         .arg( sourceCrs.userFriendlyIdentifier( QgsCoordinateReferenceSystem::ShortString ),
               destinationCrs.userFriendlyIdentifier( QgsCoordinateReferenceSystem::ShortString ),
-              details.name ),
+              details.name,
+              gridMessage ),
         QStringLiteral( "QGIS Server" ), Qgis::MessageLevel::Warning );
   } );
 
@@ -272,8 +281,9 @@ bool QgsServer::init()
       accuracyMessage = QStringLiteral( "Current transform '%1' has an accuracy of %2 meters, while the preferred transformation '%3' has accuracy %4 meters.\n" ).arg( availableOperation.name )
                         .arg( availableOperation.accuracy ).arg( preferredOperation.name ).arg( preferredOperation.accuracy );
     else if ( preferredOperation.accuracy >= 0 )
-      accuracyMessage = QStringLiteral( "Current transform '%1' has an unknown accuracy, while the preferred transformation '%2' has accuracy %3 meters.\n" ).arg( availableOperation.name )
-                        .arg( preferredOperation.name ).arg( preferredOperation.accuracy );
+      accuracyMessage = QStringLiteral( "Current transform '%1' has an unknown accuracy, while the preferred transformation '%2' has accuracy %3 meters.\n" )
+                        .arg( availableOperation.name, preferredOperation.name )
+                        .arg( preferredOperation.accuracy );
 
     const QString longMessage = QStringLiteral( "The preferred transform between '%1' and '%2' is not available for use on the system.\n" ).arg( sourceCrs.userFriendlyIdentifier(),
                                 destinationCrs.userFriendlyIdentifier() )
@@ -283,6 +293,13 @@ bool QgsServer::init()
 
   } );
 
+  QgsCoordinateTransform::setCustomCoordinateOperationCreationErrorHandler( [ = ]( const QgsCoordinateReferenceSystem & sourceCrs, const QgsCoordinateReferenceSystem & destinationCrs, const QString & error )
+  {
+    const QString longMessage = QStringLiteral( "No transform is available between %1 and %2: %3" )
+                                .arg( sourceCrs.userFriendlyIdentifier(), destinationCrs.userFriendlyIdentifier(), error );
+    QgsServerLogger::instance()->logMessage( longMessage, QStringLiteral( "QGIS Server" ), Qgis::MessageLevel::Warning );
+  } );
+
   // Configure locale
   initLocale();