Create TrainingConfig Singleton class

Created TrainingConfig as singletone class to share cofiguraiton
and logger

e.g.
def __init__():
  self.logger = TrainingConfig().__logger

then use the `self.logger` for logging.

Change-Id: I4eb5f38ffc288825fe6c9ac38312c99238150abe
Signed-off-by: subhash kumar singh <subh.singh@samsung.com>

diff --git a/tests/test_trainingmgr_config.py b/tests/test_trainingmgr_config.py
index a699588..9460a88 100644 (file)
--- a/tests/test_trainingmgr_config.py
+++ b/tests/test_trainingmgr_config.py
@@ -111,8 +111,8 @@ class Test_trainingmgr_config:
 
     @patch('trainingmgr.common.trainingmgr_config.TMLogger', return_value = TMLogger("tests/common/conf_log.yaml"))
     def test_is_config_loaded_properly_return_false(self,mock1):
-        os.environ.pop("KF_ADAPTER_IP")
-        self.TRAININGMGR_CONFIG_OBJ = TrainingMgrConfig()
+        self.TRAININGMGR_CONFIG_OBJ._TrainingMgrConfig__kf_adapter_ip = None
         expected_data = False
-        result = TrainingMgrConfig.is_config_loaded_properly(self.TRAININGMGR_CONFIG_OBJ)
+
+        result = self.TRAININGMGR_CONFIG_OBJ.is_config_loaded_properly()
         assert result == expected_data
\ No newline at end of file

diff --git a/trainingmgr/common/trainingmgr_config.py b/trainingmgr/common/trainingmgr_config.py
index dadbba2..c11ab10 100644 (file)
--- a/trainingmgr/common/trainingmgr_config.py
+++ b/trainingmgr/common/trainingmgr_config.py
@@ -29,10 +29,20 @@ class TrainingMgrConfig:
     This class conatains method for getting configuration varibles.
     """
 
+    __instance = None
+
+    def __new__(cls):
+        if cls.__instance is None:
+            cls.__instance = super(TrainingMgrConfig, cls).__new__(cls)
+            cls.__instance.__initialized = False
+        return cls.__instance
+
     def __init__(self):
         """
         This constructor filling configuration varibles.
         """
+        if self.__initialized:
+            return
         self.__kf_adapter_port = getenv('KF_ADAPTER_PORT').rstrip() if getenv('KF_ADAPTER_PORT') is not None else None
         self.__kf_adapter_ip = getenv('KF_ADAPTER_IP').rstrip() if getenv('KF_ADAPTER_IP') is not None else None
 
@@ -55,6 +65,7 @@ class TrainingMgrConfig:
 
         self.tmgr_logger = TMLogger("common/conf_log.yaml")
         self.__logger = self.tmgr_logger.logger
+        self.__initialized = True
 
     @property
     def kf_adapter_port(self):
@@ -243,13 +254,19 @@ class TrainingMgrConfig:
         if all environment variables got value then function returns True
         otherwise it return False.
         """
-        all_present = True
+        return all([val is not None for val in [self.__kf_adapter_ip, 
+                                                self.__kf_adapter_port,
+                    self.__data_extraction_ip, 
+                    self.__data_extraction_port,
+                    self.__my_port, 
+                    self.__ps_ip, 
+                    self.__ps_port, 
+                    self.__ps_user,
+                    self.__ps_password, 
+                    self.__my_ip,
+                    self.__model_management_service_ip, 
+                    self.__model_management_service_port, 
+                    self.__allow_control_access_origin,
+                    self.__pipeline, 
+                    self.__logger]])
 
-        for var in [self.__kf_adapter_ip, self.__kf_adapter_port,
-                    self.__data_extraction_ip, self.__data_extraction_port,
-                    self.__my_port, self.__ps_ip, self.__ps_port, self.__ps_user,
-                    self.__ps_password, self.__my_ip,self.__model_management_service_ip, self.__model_management_service_port, 
-                    self.__allow_control_access_origin,self.__pipeline, self.__logger]:
-            if var is None:
-                all_present = False
-        return all_present