1 files changed, 129 insertions, 0 deletions
diff --git a/sdv/core/loader/loader.py b/sdv/core/loader/loader.py
new file mode 100644
index 0000000..c9f8e96
--- /dev/null
+++ b/sdv/core/loader/loader.py
@@ -0,0 +1,129 @@
+# Copyright 2020 Intel Corporation, Spirent Communications.
+#
+# 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.
+
+"""
+Abstract class for Software Prevalidations.
+Implementors, please inherit from this class.
+"""
+
+from conf import settings
+from core.loader.loader_servant import LoaderServant
+from SoftwarePreValid.swprevalidator import ISwPreValidator
+from SoftwarePostValid.swpostvalidator import ISwPostValidator
+from NwLinksValid.nwlinksvalidator import INwLinksValidator
+
+
+# pylint: disable=too-many-public-methods
+class Loader():
+    """Loader class - main object context holder.
+    """
+    _swvalidator_loader = None
+
+    def __init__(self):
+        """Loader ctor - initialization method.
+
+        All data is read from configuration each time Loader instance is
+        created. It is up to creator to maintain object life cycle if this
+        behavior is unwanted.
+        """
+        self._swprevalidator_loader = LoaderServant(
+            settings.getValue('SW_PRE_VALID_DIR'),
+            settings.getValue('SW_PRE_VALIDATOR'),
+            ISwPreValidator)
+        self._swpostvalidator_loader = LoaderServant(
+            settings.getValue('SW_POST_VALID_DIR'),
+            settings.getValue('SW_POST_VALIDATOR'),
+            ISwPostValidator)
+        self._nwlinksvalidator_loader = LoaderServant(
+            settings.getValue('NW_LINKS_VALID_DIR'),
+            settings.getValue('NW_LINKS_VALIDATOR'),
+            INwLinksValidator)
+
+    def get_swprevalidator(self):
+        """ Returns a new instance configured Software Validator
+        :return: ISwPreValidator implementation if available, None otherwise
+        """
+        return self._swprevalidator_loader.get_class()()
+
+    def get_swprevalidator_class(self):
+        """Returns type of currently configured Software Validator.
+
+        :return: Type of ISwPreValidator implementation if available.
+            None otherwise.
+        """
+        return self._swprevalidator_loader.get_class()
+
+    def get_swprevalidators(self):
+        """
+        Get Prevalidators
+        """
+        return self._swprevalidator_loader.get_classes()
+
+    def get_swprevalidators_printable(self):
+        """
+        Get Prevalidators for printing
+        """
+        return self._swprevalidator_loader.get_classes_printable()
+
+    def get_swpostvalidator(self):
+        """ Returns a new instance configured Software Validator
+        :return: ISwPostValidator implementation if available, None otherwise
+        """
+        return self._swpostvalidator_loader.get_class()()
+
+    def get_swpostvalidator_class(self):
+        """Returns type of currently configured Software Validator.
+
+        :return: Type of ISwPostValidator implementation if available.
+            None otherwise.
+        """
+        return self._swpostvalidator_loader.get_class()
+
+    def get_swpostvalidators(self):
+        """
+        Get Postvalidators
+        """
+        return self._swpostvalidator_loader.get_classes()
+
+    def get_swpostvalidators_printable(self):
+        """
+        Get Postvalidators for printing
+        """
+        return self._swpostvalidator_loader.get_classes_printable()
+
+    def get_nwlinksvalidator(self):
+        """ Returns a new instance configured Nw-Links Validator
+        :return: INwLinksValidator implementation if available, None otherwise
+        """
+        return self._nwlinksvalidator_loader.get_class()()
+
+    def get_nwlinksvalidator_class(self):
+        """Returns type of currently configured Nw-Links Validator.
+
+        :return: Type of NwLinksValidator implementation if available.
+            None otherwise.
+        """
+        return self._nwlinksvalidator_loader.get_class()
+
+    def get_nwlinkvalidators(self):
+        """
+        Get Linkvalidators
+        """
+        return self._nwlinksvalidator_loader.get_classes()
+
+    def get_nwlinkvalidators_printable(self):
+        """
+        Get Linkvalidators for printing
+        """
+        return self._nwlinksvalidator_loader.get_classes_printable()