Kate/resources

models/top_level/ResourceConfigTemplate.py

@@ -7,6 +7,7 @@
     InlineList,
     bbox_from_list,
     get_enum_value_from_string,
+    is_url_responsive,
     is_valid_string,
 )
 from .providers.records import CrsAuthorities
@@ -166,6 +167,10 @@ def validate_reassign_bbox(self) -> bool:
             self.extents.spatial.bbox = InlineList([-180, -90, 180, 90])
             return False
 
+    def validate_extents_crs(self):
+        # not currently used, as we don't enforce data validation that requires internet access
+        return is_url_responsive(self.extents.spatial.crs, True)
+
     def get_invalid_properties(self):
         """Checks the values of mandatory fields: identification (title, description, keywords)."""
         all_invalid_fields = []

models/top_level/ServerConfig.py

@@ -1,6 +1,5 @@
 from dataclasses import dataclass, field
 from enum import Enum
-from urllib.parse import urlparse
 
 from .utils import is_valid_string
 

models/top_level/utils.py

@@ -1,4 +1,8 @@
 from enum import Enum
+import gzip
+import requests
+from urllib.parse import urlparse
+from urllib3.response import HTTPResponse
 
 STRING_SEPARATOR = " | "
 
@@ -44,3 +48,29 @@ def bbox_from_list(raw_bbox_list: list):
         )
 
     return InlineList(list_bbox_val)
+
+
+def is_url_responsive(url: str, detect_exceptions_in_successful_response=False) -> bool:
+
+    parsed_url = urlparse(url)
+    if not all([parsed_url.scheme, parsed_url.netloc]):
+        return False
+
+    try:
+        if detect_exceptions_in_successful_response:
+            # Detect OGC ExceptionReport (invalid request)
+            response = requests.get(url, allow_redirects=True, timeout=5)
+            if response.status_code != 200:
+                return False
+            else:
+                text = response.text
+                if "ExceptionReport" in text or "ExceptionText" in text:
+                    return False
+                return True
+
+        else:  # lighter request (if content is not needed)
+            response = requests.head(url, allow_redirects=True, timeout=5)
+            return response.status_code == 200
+
+    except requests.RequestException:
+        return False

pygeoapi_config_dialog.py

@@ -30,7 +30,11 @@
 
 from .ui_widgets import DataSetterFromUi, UiSetter
 from .models.ConfigData import ConfigData
-from .models.top_level.utils import InlineList, get_enum_value_from_string
+from .models.top_level.utils import (
+    InlineList,
+    get_enum_value_from_string,
+    is_url_responsive,
+)
 
 from PyQt5.QtWidgets import (
     QMainWindow,
@@ -343,6 +347,22 @@ def _validate_and_add_res_provider(self, values, provider_type):
                 f"Invalid Provider values: {invalid_fields}",
             )
 
+    def validate_res_extents_crs(self):
+        """Called from .ui file."""
+        url = self.data_from_ui_setter.get_extents_crs_from_ui(self)
+        if is_url_responsive(url, True):
+            QMessageBox.information(
+                self,
+                "Information",
+                f"Valid CRS URL: {url}",
+            )
+        else:
+            QMessageBox.warning(
+                self,
+                "Warning",
+                f"Invalid CRS URL: {url}",
+            )
+
     def delete_metadata_id_title(self):
         """Delete keyword from metadata, called from .ui file."""
         self.ui_setter.delete_list_widget_selected_item(self.listWidgetMetadataIdTitle)

pygeoapi_config_dialog_base.ui

@@ -1732,11 +1732,22 @@
                         </widget>
                       </item>
                       <item>
-                        <widget class="QLineEdit" name="lineEditResExtentsSpatialCrs">
-                          <property name="placeholderText">
-                            <string>CRS84</string>
-                          </property>
-                        </widget>
+                        <layout class = "QHBoxLayout">
+                          <item>
+                            <widget class="QLineEdit" name="lineEditResExtentsSpatialCrs">
+                              <property name="placeholderText">
+                                <string>CRS84</string>
+                              </property>
+                            </widget>
+                          </item>
+                          <item>
+                            <widget class="QPushButton" name="validateResExtentsCrsButton">
+                              <property name="text">
+                                <string>Validate</string>
+                              </property>
+                            </widget>
+                          </item>
+                        </layout>
                       </item>
                     </layout>
                     </item>
@@ -2533,6 +2544,23 @@
     </hint>
    </hints>
   </connection>
+
+  <connection>
+   <sender>validateResExtentsCrsButton</sender>
+   <signal>clicked()</signal>
+   <receiver>PygeoapiConfigDialogBase</receiver>
+   <slot>validate_res_extents_crs()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>434</x>
+     <y>160</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>434</x>
+     <y>244</y>
+    </hint>
+   </hints>
+  </connection>
 
  </connections>
  <slots>

ui_widgets/DataSetterFromUi.py

@@ -234,10 +234,7 @@ def set_resource_data_from_ui(self):
 
         # spatial crs
         config_data.resources[res_name].extents.spatial.crs = (
-            "http://www.opengis.net/def/crs/"
-            + dialog.comboBoxResExtentsSpatialCrsType.currentText()
-            + "/"
-            + dialog.lineEditResExtentsSpatialCrs.text()
+            self.get_extents_crs_from_ui(dialog)
         )
 
         # temporal: only initialize if any of the values are present, otherwise leave as default None
@@ -358,6 +355,14 @@ def set_resource_data_from_ui(self):
         if res_name in config_data.resources:
             config_data.resources[new_alias] = config_data.resources.pop(res_name)
 
+    def get_extents_crs_from_ui(self, dialog):
+        return (
+            "http://www.opengis.net/def/crs/"
+            + get_widget_text_value(dialog.comboBoxResExtentsSpatialCrsType)
+            + "/"
+            + get_widget_text_value(dialog.lineEditResExtentsSpatialCrs)
+        )
+
     def get_invalid_resource_ui_fields(self) -> list[str]:
         """Get list of invalid UI values in Resource UI."""