Merge "Add Support for Activation and Deactivation"

1 files changed, 94 insertions, 0 deletions

diff --git a/components/pm-subscription-handler/pmsh_service/pmsh_service_main.py b/components/pm-subscription-handler/pmsh_service/pmsh_service_main.py
new file mode 100755
index 00000000..ab330320
--- /dev/null
+++ b/components/pm-subscription-handler/pmsh_service/pmsh_service_main.py
@@ -0,0 +1,94 @@
+# ============LICENSE_START===================================================
+#  Copyright (C) 2019-2020 Nordix Foundation.
+# ============================================================================
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=====================================================
+import sys
+import time
+import threading
+
+import mod.aai_client as aai
+import mod.pmsh_logging as logger
+from mod import db, create_app
+from mod.config_handler import ConfigHandler
+from mod.pmsh_utils import AppConfig
+from mod.subscription import Subscription, AdministrativeState
+
+
+def subscription_processor(config_handler, administrative_state, mr_pub, app):
+    """
+    Checks for changes of administrative state in config and proceeds to process
+    the Subscription if a change has occurred
+
+    Args:
+        config_handler (ConfigHandler): Configuration Handler used to get config
+        administrative_state (str): The administrative state
+        mr_pub (_MrPub): MR publisher
+        app (db): DB application
+    """
+    app.app_context().push()
+    config = config_handler.get_config()
+    sub, nfs = aai.get_pmsh_subscription_data(config)
+    new_administrative_state = config['policy']['subscription']['administrativeState']
+    polling_period = 30.0
+
+    try:
+        if administrative_state == new_administrative_state:
+            logger.debug('Administrative State did not change in the Config')
+        else:
+            sub.process_subscription(nfs, mr_pub)
+
+    except Exception as err:
+        logger.debug(f'Error occurred during the activation/deactivation process {err}')
+
+    threading.Timer(polling_period, subscription_processor,
+                    [config_handler, new_administrative_state, mr_pub, app]).start()
+
+
+def main():
+
+    try:
+        config_handler = ConfigHandler()
+        config = config_handler.get_config()
+        app_conf = AppConfig(**config['config'])
+        app = create_app()
+        app.app_context().push()
+        db.create_all(app=app)
+        sub, nfs = aai.get_pmsh_subscription_data(config)
+        mr_pub = app_conf.get_mr_pub('policy_pm_publisher')
+        mr_sub = app_conf.get_mr_sub('policy_pm_subscriber')
+        initial_start_delay = 5.0
+
+        administrative_state = AdministrativeState.LOCKED.value
+        subscription_in_db = Subscription.get(sub.subscriptionName)
+        if subscription_in_db is not None:
+            administrative_state = subscription_in_db.status
+
+        threading.Timer(initial_start_delay, subscription_processor,
+                        [config_handler, administrative_state, mr_pub, app]).start()
+
+        threading.Timer(20.0, mr_sub.poll_policy_topic, [sub.subscriptionName, app]).start()
+
+    except Exception as e:
+        logger.debug(f'Failed to Init PMSH: {e}')
+        sys.exit(e)
+
+    while True:
+        logger.debug(Subscription.get_all_nfs_subscription_relations())
+        time.sleep(5)
+
+
+if __name__ == '__main__':
+    main()