--- /dev/null
+# ==================================================================================
+#
+# Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved.
+#
+# 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.
+#
+# ==================================================================================
+
+
+class Constants:
+
+ # xapp registration constants
+ SERVICE_HTTP = "SERVICE_{}_{}_HTTP_PORT"
+ SERVICE_RMR = "SERVICE_{}_{}_RMR_PORT"
+ CONFIG_PATH = "/ric/v1/config"
+ REGISTER_PATH = "http://service-{}-appmgr-http.{}:8080/ric/v1/register"
+ DEREGISTER_PATH = "http://service-{}-appmgr-http.{}:8080/ric/v1/deregister"
+ DEFAULT_PLT_NS = "ricplt"
+ DEFAULT_XAPP_NS = "ricxapp"
+
+ # message-type constants
+ RIC_HEALTH_CHECK_REQ = 100
+ RIC_HEALTH_CHECK_RESP = 101
+
+ # environment variable with path to configuration file
+ CONFIG_FILE_ENV = "CONFIG_FILE"