[processing][gdal] Better error messages when invalid parameters are passed

Author: nyalldawson

python/plugins/processing/algs/gdal/AssignProjection.py

@@ -29,7 +29,8 @@
 
 from qgis.PyQt.QtGui import QIcon
 
-from qgis.core import (QgsProcessingParameterRasterLayer,
+from qgis.core import (QgsProcessingException,
+                       QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterCrs,
                        QgsProcessingOutputRasterLayer)
 from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
@@ -78,6 +79,9 @@ def commandName(self):
 
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
         fileName = inLayer.source()
 
         crs = self.parameterAsCrs(parameters, self.CRS, context).authid()

python/plugins/processing/algs/gdal/ClipRasterByExtent.py

@@ -30,6 +30,7 @@
 from qgis.PyQt.QtGui import QIcon
 
 from qgis.core import (QgsRasterFileWriter,
+                       QgsProcessingException,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterEnum,
@@ -110,6 +111,9 @@ def commandName(self):
 
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException('Invalid input layer {}'.format(parameters[self.INPUT] if self.INPUT in parameters else 'INPUT'))
+
         bbox = self.parameterAsExtent(parameters, self.EXTENT, context, inLayer.crs())
         if self.NODATA in parameters and parameters[self.NODATA] is not None:
             nodata = self.parameterAsDouble(parameters, self.NODATA, context)

python/plugins/processing/algs/gdal/ClipRasterByMask.py

@@ -31,6 +31,7 @@
 
 from qgis.core import (QgsRasterFileWriter,
                        QgsProcessing,
+                       QgsProcessingException,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterFeatureSource,
                        QgsProcessingParameterRasterLayer,
@@ -124,6 +125,8 @@ def commandName(self):
 
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
 
         maskLayer, maskLayerName = self.getOgrCompatibleSource(self.MASK, parameters, context, feedback, executing)
 

python/plugins/processing/algs/gdal/ColorRelief.py

@@ -27,6 +27,7 @@
 
 import os
 from qgis.core import (QgsRasterFileWriter,
+                       QgsProcessingException,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterBand,
@@ -102,6 +103,9 @@ def commandName(self):
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         arguments = ['color-relief']
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
         arguments.append(inLayer.source())
         arguments.append(self.parameterAsFile(parameters, self.COLOR_TABLE, context))
 

python/plugins/processing/algs/gdal/OgrToPostGis.py

@@ -25,7 +25,8 @@
 
 __revision__ = '$Format:%H$'
 
-from qgis.core import (QgsProcessingParameterFeatureSource,
+from qgis.core import (QgsProcessingException,
+                       QgsProcessingParameterFeatureSource,
                        QgsProcessingParameterString,
                        QgsProcessingParameterEnum,
                        QgsProcessingParameterCrs,
@@ -189,6 +190,9 @@ def getConnectionString(self, parameters, context):
 
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         ogrLayer, layername = self.getOgrCompatibleSource(self.INPUT, parameters, context, feedback, executing)
+        if not layername:
+            raise QgsProcessingException(self.invalidSourceError(parameters, self.INPUT))
+
         shapeEncoding = self.parameterAsString(parameters, self.SHAPE_ENCODING, context)
         ssrs = self.parameterAsCrs(parameters, self.S_SRS, context).authid()
         tsrs = self.parameterAsCrs(parameters, self.T_SRS, context).authid()

python/plugins/processing/algs/gdal/aspect.py

@@ -27,7 +27,8 @@
 
 import os
 
-from qgis.core import (QgsRasterFileWriter,
+from qgis.core import (QgsProcessingException,
+                       QgsRasterFileWriter,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterBand,
@@ -102,6 +103,8 @@ def commandName(self):
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         arguments = ['aspect']
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
         arguments.append(inLayer.source())
 
         out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)

python/plugins/processing/algs/gdal/contour.py

@@ -30,6 +30,7 @@
 from qgis.PyQt.QtGui import QIcon
 
 from qgis.core import (QgsProcessing,
+                       QgsProcessingException,
                        QgsProcessingParameterDefinition,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterBand,
@@ -126,6 +127,9 @@ def commandName(self):
 
     def getConsoleCommands(self, parameters, context, feedback, executing=True):
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
         fieldName = self.parameterAsString(parameters, self.FIELD_NAME, context)
         if self.NODATA in parameters and parameters[self.NODATA] is not None:
             nodata = self.parameterAsDouble(parameters, self.NODATA, context)

python/plugins/processing/algs/gdal/fillnodata.py

@@ -28,6 +28,7 @@
 import os
 
 from qgis.core import (QgsRasterFileWriter,
+                       QgsProcessingException,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterBand,
                        QgsProcessingParameterNumber,
@@ -116,7 +117,11 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         arguments.append('-of')
         arguments.append(QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1]))
 
-        arguments.append(self.parameterAsRasterLayer(parameters, self.INPUT, context).source())
+        raster = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if raster is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
+        arguments.append(raster.source())
         arguments.append(out)
 
         commands = []

python/plugins/processing/algs/gdal/gdal2tiles.py

@@ -26,7 +26,8 @@
 __revision__ = '$Format:%H$'
 
 
-from qgis.core import (QgsProcessingParameterDefinition,
+from qgis.core import (QgsProcessingException,
+                       QgsProcessingParameterDefinition,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterCrs,
                        QgsProcessingParameterEnum,
@@ -219,6 +220,9 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
             arguments.append('-n')
 
         inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if inLayer is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
         arguments.append(inLayer.source())
         arguments.append(self.parameterAsString(parameters, self.OUTPUT, context))
 

python/plugins/processing/algs/gdal/gdal2xyz.py

@@ -26,6 +26,7 @@
 __revision__ = '$Format:%H$'
 
 from qgis.core import (QgsProcessing,
+                       QgsProcessingException,
                        QgsProcessingParameterRasterLayer,
                        QgsProcessingParameterBand,
                        QgsProcessingParameterBoolean,
@@ -82,7 +83,11 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         if self.parameterAsBool(parameters, self.CSV, context):
             arguments.append('-csv')
 
-        arguments.append(self.parameterAsRasterLayer(parameters, self.INPUT, context).source())
+        raster = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        if raster is None:
+            raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
+
+        arguments.append(raster.source())
         arguments.append(self.parameterAsFileOutput(parameters, self.OUTPUT, context))
 
         commands = []