fix queryables provider handling

pygeoapi/api/itemtypes.py

@@ -121,29 +121,22 @@ def get_collection_queryables(api: API, request: Union[APIRequest, Any],
             HTTPStatus.NOT_FOUND, headers, request.format, 'NotFound', msg)
 
     LOGGER.debug('Creating collection queryables')
-    try:
-        LOGGER.debug('Loading feature provider')
-        p = load_plugin('provider', get_provider_by_type(
-            api.config['resources'][dataset]['providers'], 'feature'))
-    except ProviderTypeError:
+
+    p = None
+    for pt in ['feature', 'coverage', 'record']:
         try:
-            LOGGER.debug('Loading coverage provider')
+            LOGGER.debug(f'Loading {pt} provider')
             p = load_plugin('provider', get_provider_by_type(
-                api.config['resources'][dataset]['providers'], 'coverage'))  # noqa
+                api.config['resources'][dataset]['providers'], pt))
+            break
         except ProviderTypeError:
-            LOGGER.debug('Loading record provider')
-            p = load_plugin('provider', get_provider_by_type(
-                api.config['resources'][dataset]['providers'], 'record'))
-        finally:
-            msg = 'queryables not available for this collection'
-            return api.get_exception(
-                HTTPStatus.BAD_REQUEST, headers, request.format,
-                'NoApplicableError', msg)
+            LOGGER.debug(f'Providing type {pt} not found')
 
-    except ProviderGenericError as err:
+    if p is None:
+        msg = 'queryables not available for this collection'
         return api.get_exception(
-            err.http_status_code, headers, request.format,
-            err.ogc_exception_code, err.message)
+            HTTPStatus.BAD_REQUEST, headers, request.format,
+            'NoApplicableError', msg)
 
     queryables = {
         'type': 'object',

tests/api/test_itemtypes.py

@@ -79,6 +79,14 @@ def test_get_collection_queryables(config, api_):
     assert 'properties' in queryables
     assert len(queryables['properties']) == 5
 
+    req = mock_api_request({'f': 'json'})
+    rsp_headers, code, response = get_collection_queryables(api_, req, 'canada-metadata')  # noqa
+    assert rsp_headers['Content-Type'] == 'application/schema+json'
+    queryables = json.loads(response)
+
+    assert 'properties' in queryables
+    assert len(queryables['properties']) == 10
+
     # test with provider filtered properties
     api_.config['resources']['obs']['providers'][0]['properties'] = ['stn_id']
 

tests/pygeoapi-test-config.yml

@@ -398,6 +398,44 @@ resources:
                     name: png
                     mimetype: image/png
 
+    canada-metadata:
+        type: collection
+        title:
+            en: Open Canada sample data
+            fr: Exemple de donn\u00e9es Canada Ouvert
+        description:
+            en: Sample metadata records from open.canada.ca
+            fr: Exemples d'enregistrements de m\u00e9tadonn\u00e9es sur ouvert.canada.ca
+        keywords:
+            en:
+                - canada
+                - open data
+            fr:
+                - canada
+                - donn\u00e9es ouvertes
+        links:
+            - type: text/html
+              rel: canonical
+              title: information
+              href: https://open.canada.ca/en/open-data
+              hreflang: en-CA
+            - type: text/html
+              rel: alternate
+              title: informations
+              href: https://ouvert.canada.ca/fr/donnees-ouvertes
+              hreflang: fr-CA
+        extents:
+            spatial:
+                bbox: [-180,-90,180,90]
+                crs: http://www.opengis.net/def/crs/OGC/1.3/CRS84
+        providers:
+            - type: record
+              name: TinyDBCatalogue
+              data: tests/data/open.canada.ca/sample-records.tinydb
+              id_field: externalId
+              time_field: created
+              title_field: title
+
     hello-world:
         type: process
         processor: