A service can have no endpoints

If a service has no endpoints, python-tempestconf fails,
because it expects a url. This patch fixes this.

Change-Id: Iaadb7959b98ecb895f0f1cbd177cbb2f2f16e776

config_tempest/services/services.py

@@ -52,11 +52,7 @@ class Services(object):
 
         for entry in auth_data[self.service_catalog]:
             name = entry['type']
-            ep = self.get_endpoints(entry)
+            url = self.parse_endpoints(self.get_endpoints(entry), name)
-
-            url = ep[self.public_url]
-            if 'identity' in url:
-                url = self.edit_identity_url(ep[self.public_url])
 
             service_class = self.get_service_class(name)
             service = service_class(name, url, token, self._ssl_validation,
@@ -93,6 +89,26 @@ class Services(object):
             self.service_catalog = 'serviceCatalog'
             self.public_url = 'publicURL'
 
+    def parse_endpoints(self, ep, name):
+        """Parse an endpoint(s).
+
+        :param ep: endpoint(s)
+        :type ep: dict or list in case of no endpoints
+        :param name: name of a service
+        :type name: string
+        :return: url
+        :rtype: string
+        """
+        # endpoint list can be empty
+        if len(ep) == 0:
+            url = ""
+            C.LOG.info("Service %s has no endpoints", name)
+        else:
+            url = ep[self.public_url]
+        if 'identity' in url:
+            url = self.edit_identity_url(ep[self.public_url])
+        return url
+
     def edit_identity_url(self, url):
         """A port and identity version are added to url if contains 'identity'
 

config_tempest/tests/services/test_services.py

@@ -83,6 +83,29 @@ class TestServices(BaseConfigTempestTest):
         self.assertEqual(services.service_catalog, 'catalog')
         self.assertEqual(services.public_url, 'url')
 
+    def test_parse_endpoints_empty(self):
+        services = self._create_services_instance()
+        services.public_url = "url"
+        ep = []
+        url = services.parse_endpoints(ep, "ServiceName")
+        self.assertEqual("", url)
+
+    def test_parse_endpoints(self):
+        services = self._create_services_instance()
+        services.public_url = "url"
+        ep = {
+            'url': 'http://10.0.0.107:8386/v1.1/96409a589d',
+            'interface': 'public',
+            'region': 'regioneOne',
+        }
+        url = services.parse_endpoints(ep, "ServiceName")
+        self.assertEqual('http://10.0.0.107:8386/v1.1/96409a589d', url)
+        ep['url'] = 'https://10.0.0.101/identity'
+        auth_url = 'https://10.0.0.101:13000/v2.0'
+        services._clients.auth_provider.auth_url = auth_url
+        url = services.parse_endpoints(ep, 'ServiceName')
+        self.assertEqual('https://10.0.0.101:13000/identity/v2', url)
+
     def test_edit_identity_url(self):
         services = self._create_services_instance()
         url_port = 'https://10.0.0.101:13000/v2.0'