feat(osf): ENG-11734 add DownloadEvent model and migration with dashboard access group

Author: sh-andriy

osf/migrations/0045_downloadevent.py

@@ -48,11 +48,11 @@ class Migration(migrations.Migration):
                 ('created', models.DateTimeField(auto_now_add=True, db_index=True)),
                 ('resource_guid', models.CharField(blank=True, db_index=True, default='', max_length=255)),
                 ('path', models.TextField(blank=True, default='')),
-                ('download_type', models.CharField(choices=[('file', 'Single file'), ('folder_zip', 'Folder zip'), ('project', 'Whole-project zip')], db_index=True, max_length=16)),
+                ('download_type', models.CharField(choices=[('file', 'Single file'), ('folder_zip', 'Folder zip'), ('project', 'Whole-project zip')], max_length=16)),
                 ('zip_completed', models.BooleanField(blank=True, null=True)),
                 ('size_bytes', models.BigIntegerField(blank=True, null=True)),
-                ('storage_region', models.CharField(blank=True, db_index=True, default='', max_length=64)),
-                ('user_region', models.CharField(blank=True, db_index=True, default='', max_length=64)),
+                ('storage_region', models.CharField(blank=True, default='', max_length=64)),
+                ('user_region', models.CharField(blank=True, default='', max_length=64)),
                 ('ip', models.GenericIPAddressField(blank=True, null=True)),
                 ('source_area', models.CharField(blank=True, default='', max_length=128)),
                 ('user', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='download_events', to='osf.osfuser')),
@@ -66,5 +66,9 @@ class Migration(migrations.Migration):
             model_name='downloadevent',
             index=models.Index(fields=['created', 'storage_region'], name='download_event_crt_regn'),
         ),
+        migrations.AddIndex(
+            model_name='downloadevent',
+            index=models.Index(fields=['created', 'user_region'], name='download_event_crt_user'),
+        ),
         migrations.RunPython(create_dashboard_group, remove_dashboard_group),
     ]

osf/models/download_event.py

@@ -24,15 +24,15 @@ class DownloadEvent(models.Model):
     # what was downloaded
     resource_guid = models.CharField(max_length=255, blank=True, default='', db_index=True)
     path = models.TextField(blank=True, default='')
-    download_type = models.CharField(max_length=16, choices=DOWNLOAD_TYPES, db_index=True)
+    download_type = models.CharField(max_length=16, choices=DOWNLOAD_TYPES)
     # null for single files (only zips stream through WB, which reports completion)
     zip_completed = models.BooleanField(null=True, blank=True)
     size_bytes = models.BigIntegerField(null=True, blank=True)
 
     # storage_region = where the bytes were served from (capacity);
     # user_region = roughly where the user is. Kept separate on purpose.
-    storage_region = models.CharField(max_length=64, blank=True, default='', db_index=True)
-    user_region = models.CharField(max_length=64, blank=True, default='', db_index=True)
+    storage_region = models.CharField(max_length=64, blank=True, default='')
+    user_region = models.CharField(max_length=64, blank=True, default='')
     ip = models.GenericIPAddressField(null=True, blank=True)
     source_area = models.CharField(max_length=128, blank=True, default='')
 
@@ -51,6 +51,7 @@ class Meta:
         indexes = [
             models.Index(fields=['created', 'download_type'], name='download_event_crt_type'),
             models.Index(fields=['created', 'storage_region'], name='download_event_crt_regn'),
+            models.Index(fields=['created', 'user_region'], name='download_event_crt_user'),
         ]
 
     def __repr__(self):