Added A1 policy handler, healthcheck handler, sdl handler and alarm

[ric-app/hw-python.git] / src / hwxapp.py

diff --git a/src/hwxapp.py b/src/hwxapp.py
new file mode 100644 (file)
index 0000000..7d66d0c
--- /dev/null
+++ b/src/hwxapp.py
@@ -0,0 +1,84 @@
+# ==================================================================================
+#
+#       Copyright (c) 2020 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.
+#
+# ==================================================================================
+
+from os import getenv
+from ricxappframe.xapp_frame import RMRXapp, rmr
+from .utils.constants import Constants
+from .manager import *
+from .handler import *
+from mdclogpy import Logger
+
+
+class HWXapp:
+
+    def __init__(self):
+        fake_sdl = getenv("USE_FAKE_SDL", False)
+        self._rmr_xapp = RMRXapp(self._default_handler,
+                                 config_handler=self._handle_config_change,
+                                 rmr_port=4560,
+                                 post_init=self._post_init,
+                                 use_fake_sdl=bool(fake_sdl))
+
+    def _post_init(self, rmr_xapp):
+        """
+        Function that runs when xapp initialization is complete
+        """
+        rmr_xapp.logger.info("HWXapp.post_init :: post_init called")
+        # self.sdl_alarm_mgr = SdlAlarmManager()
+        sdl_mgr = SdlManager(rmr_xapp)
+        sdl_mgr.sdlGetGnbList()
+        a1_mgr = A1PolicyManager(rmr_xapp)
+        a1_mgr.startup()
+
+    def _handle_config_change(self, rmr_xapp, config):
+        """
+        Function that runs at start and on every configuration file change.
+        """
+        rmr_xapp.logger.info("HWXapp.handle_config_change:: config: {}".format(config))
+        rmr_xapp.config = config  # No mutex required due to GIL
+
+    def _default_handler(self, rmr_xapp, summary, sbuf):
+        """
+        Function that processes messages for which no handler is defined
+        """
+        rmr_xapp.logger.info("HWXapp.default_handler called for msg type = " +
+                                   str(summary[rmr.RMR_MS_MSG_TYPE]))
+        rmr_xapp.rmr_free(sbuf)
+
+    def createHandlers(self):
+        """
+        Function that creates all the handlers for RMR Messages
+        """
+        HealthCheckHandler(self._rmr_xapp, Constants.RIC_HEALTH_CHECK_REQ)
+        A1PolicyHandler(self._rmr_xapp, Constants.A1_POLICY_REQ)
+
+    def start(self, thread=False):
+        """
+        This is a convenience function that allows this xapp to run in Docker
+        for "real" (no thread, real SDL), but also easily modified for unit testing
+        (e.g., use_fake_sdl). The defaults for this function are for the Dockerized xapp.
+        """
+        self.createHandlers()
+        self._rmr_xapp.run(thread)
+
+    def stop(self):
+        """
+        can only be called if thread=True when started
+        TODO: could we register a signal handler for Docker SIGTERM that calls this?
+        """
+        self._rmr_xapp.stop()