Merge branch 'weisun/feature/azure_provider' into 'master'

add entitlements client for azure provider

See merge request !1

.gitignore

@@ -4,4 +4,5 @@ osdu_api.egg-info
 __pycache__
 
 **/venv/**
-**/.idea/**
\ No newline at end of file
+**/.idea/**
+.vscode/
\ No newline at end of file

osdu_api/provider/azure/entitlements_client.py

+# Copyright © Microsoft Corporation
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#      http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import importlib
+import importlib.util
+from urllib.request import Request, urlopen
+from urllib.parse import urlencode
+from urllib.error import HTTPError
+from json import loads
+
+def get_bearer_token():
+    client_id = os.environ['client_id']
+    client_secret = os.environ['client_secret']
+    tenant_id = os.environ['tenant_id']
+    token_endpoint = os.environ['token_endpoint']
+    resource = os.environ['resource']
+
+    body = {
+            "grant_type": "client_credentials",
+            "client_id": client_id,
+            "client_secret": client_secret,
+            "resource":resource
+        }
+        
+    headers = {
+            "Content-Type": "application/x-www-form-urlencoded"
+        }
+    data = urlencode(body).encode("utf8")
+    request = Request(url=token_endpoint, data=data, headers=headers)
+    try:
+        response = urlopen(request)
+        response_body = response.read()
+        resp = loads(response_body)
+        token = resp["access_token"]
+    except HTTPError:
+        raise
+    return f'Bearer {token}'