Add script to clear analytics tables.

analytics/management/commands/clear_analytics_tables.py

@@ -0,0 +1,38 @@
+from __future__ import absolute_import
+from __future__ import print_function
+
+import sys
+
+from argparse import ArgumentParser
+from django.db import connection
+from django.core.management.base import BaseCommand
+
+from typing import Any
+
+CLEAR_QUERY = """
+DELETE FROM ONLY analytics_installationcount;
+DELETE FROM ONLY analytics_realmcount;
+DELETE FROM ONLY analytics_usercount;
+DELETE FROM ONLY analytics_streamcount;
+DELETE FROM ONLY analytics_huddlecount
+"""
+
+class Command(BaseCommand):
+    help = """Clear Analytics tables."""
+
+    def add_arguments(self, parser):
+        # type: (ArgumentParser) -> None
+        parser.add_argument('--force',
+                            action='store_true',
+                            help="Clear analytics Tables.")
+
+    def handle(self, *args, **options):
+        # type: (*Any, **Any) -> None
+        if options['force']:
+            cursor = connection.cursor()
+            cursor.execute(CLEAR_QUERY)
+            cursor.close()
+        else:
+            print("Would delete all data from analytics tables (!); use --force to do so.")
+            sys.exit(1)
+