AETHER-1259 Add signal quality metrics to monitoring server

In addition to the signal quality update,
- Fix the license
- Add .gitignore

Change-Id: I73484aaf2a1047e66026743262ea713c2121c8d2
diff --git a/edge-monitoring/edge_monitoring_server.py b/edge-monitoring/edge_monitoring_server.py
index 20ddc94..16bfe9e 100755
--- a/edge-monitoring/edge_monitoring_server.py
+++ b/edge-monitoring/edge_monitoring_server.py
@@ -2,17 +2,7 @@
 
 # Copyright 2020-present Open Networking 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: LicenseRef-ONF-Member-Only-1.0
 
 import os
 import time
@@ -51,7 +41,11 @@
                 }
             }
         },
-        'last_update': time.time(),
+        'signal_quality': {
+            'rsrq': 0,
+            'rsrp': 0
+        },
+        'last_update': time.time()
     }
 ]
 
@@ -84,6 +78,12 @@
 ping_dns_max = prom.Gauge("aetheredge_ping_dns_test_max","Last ping test maximum value",["name"])
 ping_dns_stddev = prom.Gauge("aetheredge_ping_dns_test_stddev","Last ping test standard deviation",["name"])
 
+# Signal quality metrics in CESQ format not dB
+# RSRQ: >=53 excellent, 43 ~ 53 good, 33 ~ 43 mid, <=33 bad, 0 no signal
+# RSRP: >=20 excellent, 10 ~ 20 good, 0 ~ 10 mid, 0 no signal
+signal_quality_rsrq = prom.Gauge("aetheredge_signal_quality_rsrq", "Quality of the received signal", ["name"])
+signal_quality_rsrp = prom.Gauge("aetheredge_signal_quality_rsrp", "Power of the received signal", ["name"])
+
 # Other metrics
 last_update = prom.Gauge("aetheredge_last_update", "Last reported test result", ["name"])
 maint_window = prom.Gauge("aetheredge_in_maintenance_window", "Currently in a maintenance window", ["name"])
@@ -145,15 +145,12 @@
                                                 'avg': 0.0,
                                                 'max': 0.0,
                                                 'stddev': 0.0}
+            edge.pop('signal_quality', None)
 
 def remove_edge_from_metrics(name):
     try:
         cp_status.remove(name)
         up_status.remove(name)
-        ping_dns_min.remove(name)
-        ping_dns_avg.remove(name)
-        ping_dns_max.remove(name)
-        ping_dns_stddev.remove(name)
         last_update.remove(name)
         e2e_tests_ok.remove(name)
         connect_test_ok.remove(name)
@@ -163,6 +160,20 @@
         pass
 
     try:
+        ping_dns_min.remove(name)
+        ping_dns_avg.remove(name)
+        ping_dns_max.remove(name)
+        ping_dns_stddev.remove(name)
+    except:
+        pass
+
+    try:
+        signal_quality_rsrq.remove(name)
+        signal_quality_rsrp.remove(name)
+    except:
+        pass
+
+    try:
         maint_window.remove(name)
     except:
         pass
@@ -215,6 +226,9 @@
             ping_dns_max.labels(edge['name']).set(ping_dns_max_result)
             ping_dns_stddev.labels(edge['name']).set(ping_dns_stddev_result)
 
+        if 'signal_quality' in edge.keys():
+            signal_quality_rsrq.labels(edge['name']).set(edge['signal_quality']['rsrq'])
+            signal_quality_rsrp.labels(edge['name']).set(edge['signal_quality']['rsrp'])
 
     res.append(prom.generate_latest(cp_status))
     res.append(prom.generate_latest(up_status))
@@ -228,6 +242,8 @@
     res.append(prom.generate_latest(ping_test_ok))
     res.append(prom.generate_latest(e2e_tests_ok))
     res.append(prom.generate_latest(e2e_tests_down))
+    res.append(prom.generate_latest(signal_quality_rsrq))
+    res.append(prom.generate_latest(signal_quality_rsrp))
 
     return Response(res, mimetype="text/plain")
 
@@ -286,6 +302,8 @@
             'ping': request.json['speedtest']['ping']
         }
 
+    if 'signal_quality' in request.json:
+        req_edge['signal_quality'] = request.json['signal_quality']
 
     edge = [edge for edge in edges if edge['name'] == req_edge['name']]
     if len(edge) == 0:
@@ -295,6 +313,8 @@
         edge[0]['status']['control_plane'] = req_edge['status']['control_plane']
         edge[0]['status']['user_plane'] = req_edge['status']['user_plane']
         edge[0]['speedtest']['ping'] = req_edge['speedtest']['ping']
+        if 'signal_quality' in req_edge.keys():
+            edge[0]['signal_quality'] = req_edge['signal_quality']
         edge[0]['last_update'] = req_edge['last_update']
 
     return jsonify({'edge': req_edge}), 201