Unlink Energy from functest utils and constants

It requires an update of releng jobs which have to export
ENERGY_RECORDER_API_URL = http://energy.opnfv.fr/resources

Change-Id: Iecd5d49b4d4c961c9dc51e43e54df1fcd4027266
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

3 files changed, 42 insertions, 66 deletions

diff --git a/functest/ci/config_functest.yaml b/functest/ci/config_functest.yaml
index 928da8f93..be7a2db58 100644
--- a/functest/ci/config_functest.yaml
+++ b/functest/ci/config_functest.yaml
@@ -184,8 +184,3 @@ example:
     router_name: example-router
     sg_name: example-sg
     sg_desc: Example Security group
-
-energy_recorder:
-    api_url: http://energy.opnfv.fr/resources
-    api_user: ""
-    api_password: ""
diff --git a/functest/energy/energy.py b/functest/energy/energy.py
index 2835e05c1..c6660406f 100644
--- a/functest/energy/energy.py
+++ b/functest/energy/energy.py
@@ -12,14 +12,12 @@
 
 import json
 import logging
+import os
 
 from functools import wraps
 import requests
 from six.moves import urllib
 
-from functest.utils.constants import CONST
-import functest.utils.functest_utils as ft_utils
-
 
 def finish_session(current_scenario):
     """Finish a recording session."""
@@ -94,23 +92,20 @@ class EnergyRecorder(object):
         # Singleton pattern for energy_recorder_api static member
         # Load only if not previouly done
         if EnergyRecorder.energy_recorder_api is None:
-            environment = CONST.__getattribute__('NODE_NAME')
+            environment = os.environ['NODE_NAME']
+            assert environment
 
             # API URL
-            energy_recorder_uri = ft_utils.get_functest_config(
-                "energy_recorder.api_url")
+            energy_recorder_uri = os.environ["ENERGY_RECORDER_API_URL"]
             assert energy_recorder_uri
-            assert environment
+
+            # Creds
+            creds_usr = os.environ.get("ENERGY_RECORDER_API_USER", "")
+            creds_pass = os.environ.get("ENERGY_RECORDER_API_PASSWORD", "")
 
             uri_comp = "/recorders/environment/"
             uri_comp += urllib.parse.quote_plus(environment)
 
-            # Creds
-            creds_usr = ft_utils.get_functest_config(
-                "energy_recorder.api_user")
-            creds_pass = ft_utils.get_functest_config(
-                "energy_recorder.api_password")
-
             if creds_usr != "" and creds_pass != "":
                 energy_recorder_api_auth = (creds_usr, creds_pass)
             else:
diff --git a/functest/tests/unit/energy/test_functest_energy.py b/functest/tests/unit/energy/test_functest_energy.py
index f0711ca0c..fd1104327 100644
--- a/functest/tests/unit/energy/test_functest_energy.py
+++ b/functest/tests/unit/energy/test_functest_energy.py
@@ -11,14 +11,14 @@
 """Unitary test for energy module."""
 # pylint: disable=unused-argument
 import logging
-import requests
+import os
 import unittest
 
 import mock
+import requests
 
 from functest.energy.energy import EnergyRecorder
 import functest.energy.energy as energy
-from functest.utils.constants import CONST
 
 CASE_NAME = "UNIT_TEST_CASE"
 STEP_NAME = "UNIT_TEST_STEP"
@@ -61,26 +61,6 @@ RECORDER_NOT_FOUND = MockHttpResponse(
 )
 
 
-def config_loader_mock(config_key):
-    """Return mocked config values."""
-    if config_key == "energy_recorder.api_url":
-        return "http://pod-uri:8888"
-    elif config_key == "energy_recorder.api_user":
-        return "user"
-    elif config_key == "energy_recorder.api_password":
-        return "password"
-
-
-def config_loader_mock_no_creds(config_key):
-    """Return mocked config values."""
-    if config_key == "energy_recorder.api_url":
-        return "http://pod-uri:8888"
-    elif config_key == "energy_recorder.api_user":
-        return ""
-    elif config_key == "energy_recorder.api_password":
-        return ""
-
-
 # pylint: disable=too-many-public-methods
 class EnergyRecorderTest(unittest.TestCase):
     """Energy module unitary test suite."""
@@ -90,6 +70,20 @@ class EnergyRecorderTest(unittest.TestCase):
     returned_value_to_preserve = "value"
     exception_message_to_preserve = "exception_message"
 
+    @staticmethod
+    def _set_env_creds():
+        """Set config values."""
+        os.environ["ENERGY_RECORDER_API_URL"] = "http://pod-uri:8888"
+        os.environ["ENERGY_RECORDER_API_USER"] = "user"
+        os.environ["ENERGY_RECORDER_API_PASSWORD"] = "password"
+
+    @staticmethod
+    def _set_env_nocreds():
+        """Set config values."""
+        os.environ["ENERGY_RECORDER_API_URL"] = "http://pod-uri:8888"
+        del os.environ["ENERGY_RECORDER_API_USER"]
+        del os.environ["ENERGY_RECORDER_API_PASSWORD"]
+
     @mock.patch('functest.energy.energy.requests.post',
                 return_value=RECORDER_OK)
     def test_start(self, post_mock=None, get_mock=None):
@@ -253,14 +247,12 @@ class EnergyRecorderTest(unittest.TestCase):
                 return_value={"scenario": PREVIOUS_SCENARIO,
                               "step": PREVIOUS_STEP})
     @mock.patch("functest.energy.energy.EnergyRecorder")
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                side_effect=config_loader_mock)
     def test_decorators_with_previous(self,
-                                      loader_mock=None,
                                       recorder_mock=None,
                                       cur_scenario_mock=None):
         """Test energy module decorators."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
+        self._set_env_creds()
         self.__decorated_method()
         calls = [mock.call.start(self.case_name),
                  mock.call.submit_scenario(PREVIOUS_SCENARIO,
@@ -286,13 +278,12 @@ class EnergyRecorderTest(unittest.TestCase):
         )
         self.assertTrue(finish_mock.called)
 
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                side_effect=config_loader_mock)
     @mock.patch("functest.energy.energy.requests.get",
                 return_value=API_OK)
     def test_load_config(self, loader_mock=None, get_mock=None):
         """Test load config."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
+        self._set_env_creds()
         EnergyRecorder.energy_recorder_api = None
         EnergyRecorder.load_config()
 
@@ -305,13 +296,12 @@ class EnergyRecorderTest(unittest.TestCase):
             "http://pod-uri:8888/recorders/environment/MOCK_POD"
         )
 
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                side_effect=config_loader_mock_no_creds)
     @mock.patch("functest.energy.energy.requests.get",
                 return_value=API_OK)
     def test_load_config_no_creds(self, loader_mock=None, get_mock=None):
         """Test load config without creds."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
+        self._set_env_nocreds()
         EnergyRecorder.energy_recorder_api = None
         EnergyRecorder.load_config()
         self.assertEquals(EnergyRecorder.energy_recorder_api["auth"], None)
@@ -320,37 +310,33 @@ class EnergyRecorderTest(unittest.TestCase):
             "http://pod-uri:8888/recorders/environment/MOCK_POD"
         )
 
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                return_value=None)
     @mock.patch("functest.energy.energy.requests.get",
                 return_value=API_OK)
     def test_load_config_ex(self, loader_mock=None, get_mock=None):
         """Test load config with exception."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
-        with self.assertRaises(AssertionError):
-            EnergyRecorder.energy_recorder_api = None
-            EnergyRecorder.load_config()
-        self.assertEquals(EnergyRecorder.energy_recorder_api, None)
-
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                side_effect=config_loader_mock)
+        for key in ['NODE_NAME', 'ENERGY_RECORDER_API_URL']:
+            os.environ[key] = ''
+            with self.assertRaises(AssertionError):
+                EnergyRecorder.energy_recorder_api = None
+                EnergyRecorder.load_config()
+            self.assertEquals(EnergyRecorder.energy_recorder_api, None)
+
     @mock.patch("functest.energy.energy.requests.get",
                 return_value=API_KO)
     def test_load_config_api_ko(self, loader_mock=None, get_mock=None):
         """Test load config with API unavailable."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
+        self._set_env_creds()
         EnergyRecorder.energy_recorder_api = None
         EnergyRecorder.load_config()
         self.assertEquals(EnergyRecorder.energy_recorder_api["available"],
                           False)
 
-    @mock.patch("functest.utils.functest_utils.get_functest_config",
-                return_value=None)
     @mock.patch('functest.energy.energy.requests.get',
                 return_value=RECORDER_OK)
     def test_get_current_scenario(self, loader_mock=None, get_mock=None):
         """Test get_current_scenario."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
         self.test_load_config()
         scenario = EnergyRecorder.get_current_scenario()
         self.assertTrue(scenario is not None)
@@ -359,7 +345,7 @@ class EnergyRecorderTest(unittest.TestCase):
                 return_value=RECORDER_NOT_FOUND)
     def test_current_scenario_not_found(self, get_mock=None):
         """Test get current scenario not existing."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
         self.test_load_config()
         scenario = EnergyRecorder.get_current_scenario()
         self.assertTrue(scenario is None)
@@ -368,7 +354,7 @@ class EnergyRecorderTest(unittest.TestCase):
                 return_value=RECORDER_KO)
     def test_current_scenario_api_error(self, get_mock=None):
         """Test get current scenario with API error."""
-        CONST.__setattr__('NODE_NAME', 'MOCK_POD')
+        os.environ['NODE_NAME'] = 'MOCK_POD'
         self.test_load_config()
         scenario = EnergyRecorder.get_current_scenario()
         self.assertTrue(scenario is None)