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project_checker_tools.py
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project_checker_tools.py
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__copyright__ = 'Copyright 2023, 3Liz'
__license__ = 'GPL version 3'
__email__ = '[email protected]'
import html
from os.path import relpath
from pathlib import Path
from typing import Dict, List, Optional, Tuple
from qgis.core import (
QgsAbstractDatabaseProviderConnection,
QgsDataSourceUri,
QgsFeatureRenderer,
QgsLayerTree,
QgsLayerTreeNode,
QgsMapLayer,
QgsProject,
QgsProviderRegistry,
QgsRasterLayer,
QgsVectorLayer,
QgsVectorSimplifyMethod,
QgsWkbTypes,
)
from qgis.PyQt.QtCore import QUrlQuery
from lizmap.definitions.lizmap_cloud import CLOUD_DOMAIN
from lizmap.toolbelt.convert import cast_to_group, cast_to_layer
from lizmap.toolbelt.i18n import tr
from lizmap.toolbelt.layer import is_vector_pg, update_uri
from lizmap.widgets.check_project import (
RASTER_COUNT_CELL,
Checks,
Error,
SourceGroup,
SourceLayer,
)
""" Some checks which can be done on a layer. """
# https://github.com/3liz/lizmap-web-client/issues/3692
FORCE_LOCAL_FOLDER = tr('Prevent file based layers from being in a parent folder')
ALLOW_PARENT_FOLDER = tr('Allow file based layers to be in a parent folder')
PREVENT_OTHER_DRIVE = tr('Prevent file based layers from being stored on another drive (network or local)')
PREVENT_SERVICE = tr('Prevent PostgreSQL layers from using a service file')
PREVENT_AUTH_DB = tr('Prevent PostgreSQL layers from using the QGIS authentication database')
FORCE_PG_USER_PASS = tr(
'PostgreSQL layers, if using a user and password, must have credentials saved in the datasource')
PREVENT_ECW = tr('Prevent from using a ECW raster')
class InvalidType:
Int8 = 'int8'
Varchar = 'varchar'
def project_safeguards_checks(
project: QgsProject,
prevent_ecw: bool,
prevent_auth_id: bool,
prevent_service: bool,
force_pg_user_pass: bool,
prevent_other_drive: bool,
allow_parent_folder: bool,
parent_folder: str,
lizmap_cloud: bool,
) -> Dict:
""" Check the project about safeguards. """
# Do not use homePath, it's not designed for this if the user has set a custom home path
project_home = Path(project.absolutePath())
results = {}
checks = Checks()
for layer in project.mapLayers().values():
if isinstance(layer, QgsRasterLayer):
if layer.source().lower().endswith('ecw') and prevent_ecw:
results[SourceLayer(layer.name(), layer.id())] = checks.PreventEcw
if french_geopf_authcfg_url_parameters(layer.source()) and prevent_auth_id:
results[SourceLayer(layer.name(), layer.id())] = checks.FrenchGeoPlateformeUrl
if is_vector_pg(layer):
# Make a copy by using a string, so we are sure to have user or password
datasource = QgsDataSourceUri(layer.source())
if datasource.authConfigId() != '' and prevent_auth_id:
results[SourceLayer(layer.name(), layer.id())] = checks.AuthenticationDb
# We can continue
continue
if datasource.service() != '' and prevent_service:
results[SourceLayer(layer.name(), layer.id())] = checks.PgService
# We can continue
continue
if not datasource.service():
if datasource.host().endswith(CLOUD_DOMAIN) or force_pg_user_pass:
if not datasource.username() or not datasource.password():
results[SourceLayer(layer.name(), layer.id())] = checks.PgForceUserPass
# We can continue
continue
# Only vector/raster file based
components = QgsProviderRegistry.instance().decodeUri(layer.dataProvider().name(), layer.source())
if 'path' not in components.keys():
# The layer is not file base.
continue
layer_path = Path(components['path'])
try:
if not layer_path.exists():
# Let's skip, QGIS is already warning this layer
# Or the file might be a COG on Linux :
# /vsicurl/https://demo.snap.lizmap.com/lizmap_3_6/cog/...
continue
except OSError:
# Ticket https://github.com/3liz/lizmap-plugin/issues/541
# OSError: [WinError 123] La syntaxe du nom de fichier, de répertoire ou de volume est incorrecte:
# '\\vsicurl\\https:\\XXX.lizmap.com\\YYY\\cog\\ZZZ.tif'
continue
try:
relative_path = relpath(layer_path, project_home)
except ValueError:
# https://docs.python.org/3/library/os.path.html#os.path.relpath
# On Windows, ValueError is raised when path and start are on different drives.
# For instance, H: and C:
if lizmap_cloud or prevent_other_drive:
results[SourceLayer(layer.name(), layer.id())] = checks.PreventDrive
continue
# Not sure what to do for now...
# We can't compute a relative path, but the user didn't enable the safety check, so we must still skip
continue
if allow_parent_folder:
# The user allow parent folder, so we check against the string provided in the function call
if parent_folder in relative_path:
results[SourceLayer(layer.name(), layer.id())] = checks.PreventParentFolder
else:
# The user wants only local files, we only check for ".."
if '..' in relative_path:
results[SourceLayer(layer.name(), layer.id())] = checks.PreventParentFolder
if isinstance(layer, QgsRasterLayer):
# Only file based raster
if not layer.dataProvider().hasPyramids():
if layer.width() * layer.height() >= RASTER_COUNT_CELL:
results[SourceLayer(layer.name(), layer.id())] = checks.RasterWithoutPyramid
return results
def project_invalid_pk(project: QgsProject) -> Tuple[List[SourceLayer], List[SourceLayer], List[SourceLayer]]:
""" Check either non existing PK or bigint. """
autogenerated_keys = []
int8 = []
varchar = []
for layer in project.mapLayers().values():
if not isinstance(layer, QgsVectorLayer):
continue
result, field = auto_generated_primary_key_field(layer)
if result:
autogenerated_keys.append(SourceLayer(layer.name(), layer.id()))
if invalid_type_primary_key(layer, InvalidType.Int8):
int8.append(SourceLayer(layer.name(), layer.id()))
continue
if invalid_type_primary_key(layer, InvalidType.Varchar):
varchar.append(SourceLayer(layer.name(), layer.id()))
continue
return autogenerated_keys, int8, varchar
def project_tos_layers(project: QgsProject, google_check: bool, bing_check: bool) -> List[SourceLayer]:
""" Check for Google or Bing layers. """
layers = []
for layer in project.mapLayers().values():
datasource = layer.source().lower()
if 'google.com' in datasource and google_check:
layers.append(SourceLayer(layer.name(), layer.id()))
elif 'virtualearth.net' in datasource and bing_check:
layers.append(SourceLayer(layer.name(), layer.id()))
return layers
def auto_generated_primary_key_field(layer: QgsVectorLayer) -> Tuple[bool, Optional[str]]:
""" If the primary key has been detected as tid/ctid but the field does not exist. """
# In QGIS source code, look for "Primary key is ctid"
if layer.dataProvider().name() != 'postgres':
# GeoJSON etc
return False, None
# QgsVectorLayer.primaryKeyAttributes is returning a list.
if len(layer.primaryKeyAttributes()) >= 2:
# We don't check for composite keys here
return False, None
if layer.dataProvider().uri().keyColumn() in layer.fields().names():
return False, None
# The layer has "tid" or "ctid" as a primary key, but the field is not found.
return True, layer.dataProvider().uri().keyColumn()
def invalid_type_primary_key(layer: QgsVectorLayer, check_field: str) -> bool:
""" If the layer has a primary key as int8, alias bigint. """
# QgsVectorLayer.primaryKeyAttributes is returning a list.
if len(layer.primaryKeyAttributes()) != 1:
# We might have either no primary key,
# or a composite primary key
return False
uri = QgsDataSourceUri(layer.source())
primary_key = uri.keyColumn()
if not primary_key:
return False
if primary_key not in layer.fields().names():
# The primary key used in the datasource doesn't exist in the proper layer fields
# We don't check, because this test is done in "auto_generated_primary_key_field"
return False
field = layer.fields().field(primary_key)
return field.typeName().lower() == check_field
def duplicated_layer_name_or_group(project: QgsProject) -> dict:
""" The CFG can only store layer/group names which are unique. """
result = {}
# Vector and raster layers
for layer in project.mapLayers().values():
layer: QgsMapLayer
name = layer.name()
if name not in result.keys():
result[name] = 1
else:
result[name] += 1
# Groups
for child in project.layerTreeRoot().children():
if QgsLayerTree.isGroup(child):
child = cast_to_group(child)
name = child.name()
if name not in result.keys():
result[name] = 1
else:
result[name] += 1
return result
def _split_layer_uri(provider: str, source: str) -> Tuple[str, Optional[str]]:
""" Split the base URI from the filter part. """
uri = QgsDataSourceUri(source)
uri_filter = uri.sql()
uri.setSql('')
base_uri_string = uri.uri(True)
if not uri_filter:
# The layer is not based on a RDBMS, try on a file
components = QgsProviderRegistry.instance().decodeUri(provider, source)
if components.get('path'):
# Layers based on files
base_uri_string = components.get('path')
if components.get('subset'):
uri_filter = components.get('subset')
else:
return base_uri_string, None
return base_uri_string, uri_filter
def duplicated_layer_with_filter(project: QgsProject) -> Optional[Dict[str, Dict[str, str]]]:
""" Check for duplicated layers with the same datasource but with filters. """
# Function not used anymore, temporary replaced by the function below
unique_datasource = {}
for layer in project.mapLayers().values():
base_uri, uri_filter = _split_layer_uri(layer.dataProvider().name(), layer.source())
if not uri_filter:
continue
if base_uri not in unique_datasource.keys():
# First time we meet this datasource, we append
unique_datasource[base_uri] = {}
if uri_filter not in unique_datasource[base_uri]:
# We add the filter with the layer name
unique_datasource[base_uri][uri_filter] = layer.name()
if len(unique_datasource.keys()) == 0:
return None
data = {k: v for k, v in unique_datasource.items() if len(v.values()) >= 2}
return data
def duplicated_layer_with_filter_legend(project: QgsProject) -> List:
""" Check for duplicated layers with the same datasource but with filters when layers are next to each other. """
root = project.layerTreeRoot()
return _recursive_duplicated_layer_with_filter_legend(root, project)
def _recursive_duplicated_layer_with_filter_legend(
layer_tree: QgsLayerTreeNode, project: QgsProject) -> List:
""" Recursive function for the function above. """
output = []
tmp_list = {}
previous_uri = None
for child in layer_tree.children():
# noinspection PyArgumentList
if QgsLayerTree.isLayer(child):
child = cast_to_layer(child)
layer = project.mapLayer(child.layerId())
if layer.customProperty("lizmap-plugin-skip-duplicated-layer") == "yes":
# Layers from the Cadastre plugin
continue
# Split base uri and filter
base_uri, uri_filter = _split_layer_uri(layer.dataProvider().name(), layer.source())
if previous_uri and previous_uri != base_uri:
# New layer, we reinit the temporary data
# Need to save the current after checking values >= 2 (+1 for the symbol)
tmp_list = {k: v for k, v in tmp_list.items() if len(v.values()) >= 3}
if tmp_list:
output.append(tmp_list)
tmp_list = {}
previous_uri = None
if not uri_filter:
# Not filter, we can skip
continue
if not previous_uri:
# Saving the current URI
previous_uri = base_uri
if base_uri not in tmp_list.keys():
# First time we meet this datasource, we append
tmp_list[base_uri] = {
'_wkb_type': layer.wkbType(),
}
if uri_filter not in tmp_list[base_uri]:
# We add the filter with the layer name
tmp_list[base_uri][uri_filter] = layer.name()
else:
# New group, we reinit the temporary data
# Need to save the current after checking values >= 2 (+1 for the symbol)
tmp_list = {k: v for k, v in tmp_list.items() if len(v.values()) >= 3}
if tmp_list:
output.append(tmp_list)
tmp_list = {}
previous_uri = None
tmp_output = _recursive_duplicated_layer_with_filter_legend(cast_to_group(child), project)
if tmp_output:
output.extend(tmp_output)
# Need to save the current after checking values >= 2 (+1 for the symbol)
tmp_list = {k: v for k, v in tmp_list.items() if len(v.values()) >= 3}
if tmp_list:
output.append(tmp_list)
return output
def simplify_provider_side(project: QgsProject, fix=False) -> List[SourceLayer]:
""" Return the list of layer name which can be simplified on the server side. """
results = []
for layer in project.mapLayers().values():
if not is_vector_pg(layer, geometry_check=True):
continue
if layer.geometryType() == QgsWkbTypes.PointGeometry:
continue
has_simplification = layer.simplifyMethod().simplifyHints() != QgsVectorSimplifyMethod.NoSimplification
provider_simplification = not layer.simplifyMethod().forceLocalOptimization()
if has_simplification and provider_simplification:
continue
results.append(SourceLayer(layer.name(), layer.id()))
if fix:
simplify = layer.simplifyMethod()
simplify.setSimplifyHints(QgsVectorSimplifyMethod.GeometrySimplification)
simplify.setForceLocalOptimization(False)
layer.setSimplifyMethod(simplify)
return results
def use_estimated_metadata(project: QgsProject, fix: bool = False) -> List[SourceLayer]:
""" Return the list of layer name which can use estimated metadata. """
results = []
for layer in project.mapLayers().values():
if not is_vector_pg(layer, geometry_check=True):
continue
uri = layer.dataProvider().uri()
if not uri.useEstimatedMetadata():
results.append(SourceLayer(layer.name(), layer.id()))
if fix:
uri.setUseEstimatedMetadata(True)
update_uri(layer, uri)
return results
def project_trust_layer_metadata(project: QgsProject, fix: bool = False) -> bool:
""" Trust layer metadata at the project level. """
if not fix:
return project.trustLayerMetadata()
project.setTrustLayerMetadata(True)
return True
def count_legend_items(layer_tree: QgsLayerTreeNode, project, list_qgs: list) -> list:
""" Count all items in the project legend. """
for child in layer_tree.children():
# noinspection PyArgumentList
if QgsLayerTree.isLayer(child):
list_qgs.append(child.name())
else:
child = cast_to_group(child)
list_qgs.append(child.name())
# Recursive call
list_qgs = count_legend_items(child, project, list_qgs)
return list_qgs
def trailing_layer_group_name(layer_tree: QgsLayerTreeNode, project, results: List) -> List:
""" Check for a trailing space in layer or group name. """
for child in layer_tree.children():
# noinspection PyArgumentList
if QgsLayerTree.isLayer(child):
child = cast_to_layer(child)
layer = project.mapLayer(child.layerId())
if layer.name().strip() != layer.name():
results.append(
Error(layer.name(), Checks().LeadingTrailingSpaceLayerGroupName, SourceLayer(layer.name(), layer.id())))
else:
child = cast_to_group(child)
if child.name().strip() != child.name():
results.append(
Error(child.name(), Checks().LeadingTrailingSpaceLayerGroupName, SourceGroup))
# Recursive call
results = trailing_layer_group_name(child, project, results)
return results
def french_geopf_authcfg_url_parameters(datasource: str) -> bool:
""" Check for authcfg in a datasource, using a plain string.
This function is not using QgsDataSourceUri::authConfigId()
"""
if 'data.geopf.fr' not in datasource.lower():
return False
url_param = QUrlQuery(html.unescape(datasource))
for param in url_param.queryItems():
if param[0].lower() == 'authcfg' and param[1] != '':
return True
# if param[0].lower().startswith("http-header:"):
# return True
return False
def duplicated_rule_key_legend(project: QgsProject, filter_data: bool = True) -> Dict[str, Dict[str, int]]:
""" Check for all duplicated rule keys in the legend. """
results = {}
for layer in project.mapLayers().values():
if not layer.isSpatial():
continue
renderer = layer.renderer()
if not renderer:
# https://github.com/3liz/lizmap-plugin/issues/591
# A vector layer can be spatial but having symbology disabled
continue
results[layer.id()] = {}
# From QGIS source code :
# https://github.com/qgis/QGIS/blob/71499aacf431d3ac244c9b75c3d345bdc53572fb/src/core/symbology/qgsrendererregistry.cpp#L33
if renderer.type() in ("categorizedSymbol", "RuleRenderer", "graduatedSymbol"):
for item in renderer.legendSymbolItems():
if item.ruleKey() not in results[layer.id()].keys():
results[layer.id()][item.ruleKey()] = 1
else:
results[layer.id()][item.ruleKey()] += 1
if not filter_data:
# For tests only
return results
# Keep only duplicated keys
return _clean_result(results)
def duplicated_label_legend(project: QgsProject, filter_data: bool = True) -> Dict[str, Dict[str, int]]:
""" Check for all duplicated labels in the legend, per layer. """
results = {}
for layer in project.mapLayers().values():
if not layer.isSpatial():
continue
renderer = layer.renderer()
# From QGIS source code :
# https://github.com/qgis/QGIS/blob/71499aacf431d3ac244c9b75c3d345bdc53572fb/src/core/symbology/qgsrendererregistry.cpp#L33
if renderer.type() in ("RuleRenderer", ):
results[layer.id()] = _duplicated_label_legend_layer(renderer)
if not filter_data:
# For tests only
return results
# Keep only duplicated labels within a layer
return _clean_result(results)
def _duplicated_label_legend_layer(renderer: QgsFeatureRenderer) -> Dict[str, int]:
""" Check at the renderer level for the check above. """
# noinspection PyUnresolvedReferences
root_rule = renderer.rootRule()
labels = {}
for rule in root_rule.children():
if rule.label() not in labels.keys():
labels[rule.label()] = 1
else:
labels[rule.label()] += 1
# Only rule based
for sub_rule in rule.children():
if sub_rule.label() not in labels.keys():
labels[sub_rule.label()] = 1
else:
labels[sub_rule.label()] += 1
return labels
def _clean_result(results: dict) -> dict:
""" Remove some lines from the dictionary if the count is less than 2. """
data = {}
for layer_id, labels in results.items():
data[layer_id] = {}
for label, count in labels.items():
if count >= 2:
data[layer_id][label] = count
if not data[layer_id]:
del data[layer_id]
return data
def table_type(layer: QgsVectorLayer) -> Optional[QgsAbstractDatabaseProviderConnection.TableFlag]:
""" Check the vector layer if it's a view. """
uri = layer.dataProvider().uri()
metadata = QgsProviderRegistry.instance().providerMetadata('postgres')
connection = metadata.createConnection(uri.uri(), {})
sql = (
f"SELECT relkind "
f"FROM pg_catalog.pg_class "
f"WHERE oid = '\"{uri.schema()}\".\"{uri.table()}\"'::regclass;"
)
result = connection.executeSql(sql)
if not result:
return None
if result[0][0] == 'r':
return QgsAbstractDatabaseProviderConnection.TableFlag.Vector
if result[0][0] == 'v':
return QgsAbstractDatabaseProviderConnection.TableFlag.View
if result[0][0] == 'm':
return QgsAbstractDatabaseProviderConnection.TableFlag.MaterializedView
return None