Add app creds support to OS provider for JS2 (#297)

* Add app creds support to OS provider for JS2

Co-authored-by: Nuwan Goonasekera <2070605+nuwang@users.noreply.github.com>

cloudbridge/__init__.py

@@ -2,7 +2,7 @@
 import logging
 
 # Current version of the library
-__version__ = '3.0.0'
+__version__ = '3.1.0'
 
 
 def get_version():

cloudbridge/providers/openstack/provider.py

@@ -18,6 +18,8 @@ from swiftclient import client as swift_client
 from cloudbridge.base import BaseCloudProvider
 from cloudbridge.base.helpers import get_env
 
+from cloudbridge.interfaces.exceptions import ProviderConnectionException
+
 from .services import OpenStackComputeService
 from .services import OpenStackDnsService
 from .services import OpenStackNetworkingService
@@ -34,6 +36,10 @@ class OpenStackCloudProvider(BaseCloudProvider):
         super(OpenStackCloudProvider, self).__init__(config)
 
         # Initialize cloud connection fields
+        self.app_cred_id = self._get_config_value(
+            'os_application_credential_id', get_env('OS_APPLICATION_CREDENTIAL_ID'))
+        self.app_cred_secret = self._get_config_value(
+            'os_application_credential_secret', get_env('OS_APPLICATION_CREDENTIAL_SECRET'))
         self.username = self._get_config_value(
             'os_username', get_env('OS_USERNAME'))
         self.password = self._get_config_value(
@@ -112,13 +118,22 @@ class OpenStackCloudProvider(BaseCloudProvider):
 
         if self._keystone_version == 3:
             from keystoneauth1.identity import v3
-            auth = v3.Password(auth_url=self.auth_url,
-                               username=self.username,
-                               password=self.password,
-                               user_domain_name=self.user_domain_name,
-                               project_domain_id=self.project_domain_id,
-                               project_domain_name=self.project_domain_name,
-                               project_name=self.project_name)
+            if self.username and self.password:
+                auth = v3.Password(auth_url=self.auth_url,
+                                   username=self.username,
+                                   password=self.password,
+                                   user_domain_name=self.user_domain_name,
+                                   project_domain_id=self.project_domain_id,
+                                   project_domain_name=self.project_domain_name,
+                                   project_name=self.project_name)
+            elif self.app_cred_id and self.app_cred_secret:
+                auth = v3.ApplicationCredential(auth_url=self.auth_url,
+                                                application_credential_id=self.app_cred_id,
+                                                application_credential_secret=self.app_cred_secret)
+            else:
+                raise ProviderConnectionException("""No valid credentials were found. You must supply either
+                                                     'os_username' and 'os_password', or 'os_application_credential_id'
+                                                     and 'os_application_credential_secret'""")
             self._cached_keystone_session = session.Session(auth=auth)
         else:
             from keystoneauth1.identity import v2
@@ -133,12 +148,7 @@ class OpenStackCloudProvider(BaseCloudProvider):
             region_name=self.region_name,
             user_agent='cloudbridge',
             auth_url=self.auth_url,
-            project_name=self.project_name,
-            username=self.username,
-            password=self.password,
-            user_domain_name=self.user_domain_name,
-            project_domain_id=self.project_domain_id,
-            project_domain_name=self.project_domain_name
+            session=self._keystone_session,
         )
 
     @property

setup.py

@@ -48,8 +48,8 @@ REQS_GCP = [
 ]
 REQS_OPENSTACK = [
     'openstacksdk>=0.12.0,<1.0.0',
-    'python-novaclient>=7.0.0,<18.0',
-    'python-swiftclient>=3.2.0,<4.0',
+    'python-novaclient>=7.0.0,<19.0',
+    'python-swiftclient>=3.2.0,<5.0',
     'python-neutronclient>=6.0.0,<8.0',
     'python-keystoneclient>=3.13.0,<5.0'
 ]