Data API data model extension (#624)

* api_client: get ready for api data model extension
key_reference and version_notes coming soon

* turn host_and_port_from_url into a private static method

* api_client: append '/' to the urls '../dataset/', '../dataset/{uuid}/' and ../data_type/{data-type}'

* pylint

* update to climada-api v2:
- better integration of data_type versions and references
- data_type properties filtered by extant dataset poperties

climada/conf/climada.conf

@@ -59,7 +59,7 @@
     "log_level": "WARNING",
     "max_matrix_size": 1000000000,
     "data_api": {
-        "url": "https://climada.ethz.ch/data-api/v1/",
+        "url": "https://climada.ethz.ch/data-api/v2/",
         "chunk_size": 8192,
         "cache_db": "{local_data.system}/.downloads.db",
         "cache_enabled": true,

climada/util/api_client.py

@@ -83,6 +83,8 @@ class DataTypeInfo():
     status: str
     description:str
     properties:list  # of dict
+    key_reference:list = None
+    version_notes:list = None
 
 
 @dataclass
@@ -371,7 +373,7 @@ def list_dataset_infos(self, data_type=None, name=None, version=None, properties
         -------
         list of DatasetInfo
         """
-        url = f'{self.url}/dataset'
+        url = f'{self.url}/dataset/'
         params = {
             'data_type': data_type,
             'name': name,
@@ -458,7 +460,7 @@ def get_dataset_info_by_uuid(self, uuid):
         NoResult
             if the uuid is not valid
         """
-        url = f'{self.url}/dataset/{uuid}'
+        url = f'{self.url}/dataset/{uuid}/'
         return DatasetInfo.from_json(self._request_200(url))
 
     def list_data_type_infos(self, data_type_group=None):
@@ -474,7 +476,7 @@ def list_data_type_infos(self, data_type_group=None):
         -------
         list of DataTypeInfo
         """
-        url = f'{self.url}/data_type'
+        url = f'{self.url}/data_type/'
         params = {'data_type_group': data_type_group} \
             if data_type_group else {}
         return [DataTypeInfo(**jobj) for jobj in self._request_200(url, params=params)]
@@ -496,7 +498,7 @@ def get_data_type_info(self, data_type):
         NoResult
             if there is no such data type registered
         """
-        url = f'{self.url}/data_type/{quote(data_type)}'
+        url = f'{self.url}/data_type/{quote(data_type)}/'
         return DataTypeInfo(**self._request_200(url))
 
     def _download(self, url, path, replace=False):