Setting & check for site-wide per-month event ingestion maximum

phonehome/migrations/0003_installation_ingest_quotas.py

@@ -0,0 +1,21 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("phonehome", "0002_installation_email_quota_usage"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="installation",
+            name="next_quota_check",
+            field=models.PositiveIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name="installation",
+            name="quota_exceeded_until",
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]

phonehome/models.py

@@ -16,7 +16,10 @@ class Installation(models.Model):
 
     silence_email_system_warning = models.BooleanField(default=False)
 
+    # ingestion/digestion quota
     email_quota_usage = models.TextField(null=False, default='{"per_month": {}}')
+    quota_exceeded_until = models.DateTimeField(null=True, blank=True)
+    next_quota_check = models.PositiveIntegerField(null=False, default=0)
 
     @classmethod
     @immediate_atomic(only_if_needed=True)  # minimalize write-lock-hogging (while being callable within atomic blocks)