simple ogn stats

ogn/db_analysis.py

@@ -0,0 +1,63 @@
+from datetime import datetime, timedelta
+
+from sqlalchemy.sql import func
+from sqlalchemy import distinct, and_
+
+from ogn.db import session
+from ogn.model import Receiver
+
+back_24h = datetime.utcnow() - timedelta(days=1)
+receiver_messages_per_24h = 24*60 / 5
+
+
+def get_receiver_info():
+    sq = session.query(distinct(Receiver.name).label('name'), func.max(Receiver.timestamp).label('lastseen'), func.count(Receiver.name).label('messages_count')).\
+        filter(Receiver.timestamp > back_24h).\
+        group_by(Receiver.name).\
+        subquery()
+
+    query = session.query(Receiver, sq.c.messages_count).\
+        filter(and_(Receiver.name == sq.c.name, Receiver.timestamp == sq.c.lastseen)).\
+        order_by(Receiver.name)
+
+    print('--- Receivers ---')
+    for [receiver, messages_count] in query.all():
+        print('%9s: %3d%% avail, %s, %s ' % (receiver.name, 100.0*float(messages_count/receiver_messages_per_24h), receiver.version, receiver.platform))
+
+
+def get_software_stats():
+    sq = session.query(Receiver.name, func.max(Receiver.timestamp).label('lastseen')).\
+        filter(Receiver.timestamp > back_24h).\
+        group_by(Receiver.name).\
+        subquery()
+
+    versions = session.query(distinct(Receiver.version), func.count(Receiver.version)).\
+        filter(and_(Receiver.name == sq.c.name, Receiver.timestamp == sq.c.lastseen)).\
+        group_by(Receiver.version).\
+        order_by(Receiver.version)
+
+    print('\n--- Versions ---')
+    for [version, count] in versions.all():
+        print('%5s: %s' % (version, count))
+
+
+def get_hardware_stats():
+    sq = session.query(Receiver.name, func.max(Receiver.timestamp).label('lastseen')).\
+        filter(Receiver.timestamp > back_24h).\
+        group_by(Receiver.name).\
+        subquery()
+
+    platforms = session.query(distinct(Receiver.platform), func.count(Receiver.platform)).\
+        filter(and_(Receiver.name == sq.c.name, Receiver.timestamp == sq.c.lastseen)).\
+        group_by(Receiver.platform).\
+        order_by(Receiver.platform)
+
+    print('\n--- Platforms ---')
+    for [platform, count] in platforms.all():
+        print('%7s: %s' % (platform, count))
+
+
+if __name__ == '__main__':
+    get_receiver_info()
+    get_software_stats()
+    get_hardware_stats()