Avoid filesystem lookups in snapshot admin list

archivebox/core/admin_snapshots.py

@@ -241,6 +241,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
         qs = (
             super()
             .get_queryset(request)
+            .select_related('crawl__created_by')
             .defer('config', 'notes')
             .prefetch_related('tags')
             .prefetch_related(Prefetch('archiveresult_set', queryset=prefetch_qs))
@@ -403,7 +404,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
         show_title = bool(title_raw) and title_normalized != 'pending...' and title_normalized != url_normalized
         css_class = 'fetched' if show_title else 'pending'
 
-        detail_url = build_web_url(f'/{obj.archive_path}/index.html')
+        detail_url = build_web_url(f'/{obj.archive_path_from_db}/index.html')
         title_html = ''
         if show_title:
             title_html = format_html(
@@ -489,7 +490,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
     )
     def files(self, obj):
         # return '-'
-        return obj.icons()
+        return obj.icons(path=obj.archive_path_from_db)
 
 
     @admin.display(
@@ -595,7 +596,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
                 '{}</a>'
                 '<div style="font-size: 10px; color: #94a3b8; margin-top: 2px;">'
                 '{}/{} hooks</div>',
-                build_web_url(f'/{obj.archive_path}'),
+                build_web_url(f'/{obj.archive_path_from_db}'),
                 size_txt,
                 stats['succeeded'],
                 stats['total'],
@@ -603,7 +604,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
 
         return format_html(
             '<a href="{}" title="View all files">{}</a>',
-            build_web_url(f'/{obj.archive_path}'),
+            build_web_url(f'/{obj.archive_path_from_db}'),
             size_txt,
         )
 

archivebox/core/models.py

@@ -1280,7 +1280,7 @@ class Snapshot(ModelWithOutputDir, ModelWithConfig, ModelWithNotes, ModelWithHea
         cache_key = f'{self.pk}-tags'
         return cache.get_or_set(cache_key, calc_tags_str) if not nocache else calc_tags_str()
 
-    def icons(self) -> str:
+    def icons(self, path: Optional[str] = None) -> str:
         """Generate HTML icons showing which extractor plugins have succeeded for this snapshot"""
         from django.utils.html import format_html, mark_safe
 
@@ -1296,7 +1296,7 @@ class Snapshot(ModelWithOutputDir, ModelWithConfig, ModelWithNotes, ModelWithHea
                     Q(status="succeeded") & (Q(output_files__isnull=False) | ~Q(output_str=''))
                 )}
 
-            path = self.archive_path
+            archive_path = path or self.archive_path
             output = ""
             output_template = '<a href="/{}/{}" class="exists-{}" title="{}">{}</a>'
 
@@ -1316,7 +1316,7 @@ class Snapshot(ModelWithOutputDir, ModelWithConfig, ModelWithNotes, ModelWithHea
                 embed_path = result.embed_path() if result else f'{plugin}/'
                 output += format_html(
                     output_template,
-                    path,
+                    archive_path,
                     embed_path,
                     str(bool(existing)),
                     plugin,
@@ -1435,6 +1435,34 @@ class Snapshot(ModelWithOutputDir, ModelWithConfig, ModelWithNotes, ModelWithHea
     def legacy_archive_path(self) -> str:
         return f'{CONSTANTS.ARCHIVE_DIR_NAME}/{self.timestamp}'
 
+    @cached_property
+    def archive_path_from_db(self) -> str:
+        """Best-effort public URL path derived from DB fields only."""
+        if self.fs_version in ('0.7.0', '0.8.0'):
+            return self.legacy_archive_path
+
+        if self.fs_version in ('0.9.0', '1.0.0'):
+            username = 'web'
+            crawl = getattr(self, 'crawl', None)
+            if crawl and getattr(crawl, 'created_by_id', None):
+                username = crawl.created_by.username
+            if username == 'system':
+                username = 'web'
+
+            date_base = self.created_at or self.bookmarked_at
+            if date_base:
+                date_str = date_base.strftime('%Y%m%d')
+            else:
+                try:
+                    date_str = datetime.fromtimestamp(float(self.timestamp)).strftime('%Y%m%d')
+                except (TypeError, ValueError, OSError):
+                    return self.legacy_archive_path
+
+            domain = self.extract_domain_from_url(self.url)
+            return f'{username}/{date_str}/{domain}/{self.id}'
+
+        return self.legacy_archive_path
+
     @cached_property
     def url_path(self) -> str:
         """URL path matching the current snapshot output_dir layout."""

archivebox/tests/conftest.py

@@ -11,6 +11,8 @@ from typing import List, Dict, Any, Optional, Tuple
 
 import pytest
 
+from archivebox.uuid_compat import uuid7
+
 
 # =============================================================================
 # CLI Helpers (defined before fixtures that use them)
@@ -399,8 +401,7 @@ def assert_record_has_fields(record: Dict[str, Any], required_fields: List[str])
 
 def create_test_url(domain: str = 'example.com', path: str = None) -> str:
     """Generate unique test URL."""
-    import uuid
-    path = path or uuid.uuid4().hex[:8]
+    path = path or uuid7().hex[:8]
     return f'https://{domain}/{path}'
 
 

archivebox/tests/migrations_helpers.py

@@ -16,7 +16,8 @@ import subprocess
 from pathlib import Path
 from datetime import datetime, timezone
 from typing import Dict, List, Tuple
-from uuid import uuid4
+
+from archivebox.uuid_compat import uuid7
 
 
 # =============================================================================
@@ -495,7 +496,7 @@ INSERT INTO django_content_type (app_label, model) VALUES
 
 def generate_uuid() -> str:
     """Generate a UUID string without dashes for SQLite."""
-    return uuid4().hex
+    return uuid7().hex
 
 
 def generate_timestamp() -> str:

archivebox/tests/test_admin_views.py

@@ -135,6 +135,44 @@ class TestAdminSnapshotListView:
         assert response.status_code == 200
         assert b'example.com' in response.content
 
+    def test_list_view_avoids_legacy_title_fallbacks(self, client, admin_user, snapshot, monkeypatch):
+        """Title-less snapshots should render without touching history-based fallback paths."""
+        from archivebox.core.models import Snapshot
+
+        Snapshot.objects.filter(pk=snapshot.pk).update(title='')
+
+        def _latest_title_should_not_be_used(self):
+            raise AssertionError('admin changelist should not access Snapshot.latest_title')
+
+        def _history_should_not_be_used(self):
+            raise AssertionError('admin changelist should not access Snapshot.history')
+
+        monkeypatch.setattr(Snapshot, 'latest_title', property(_latest_title_should_not_be_used), raising=False)
+        monkeypatch.setattr(Snapshot, 'history', property(_history_should_not_be_used), raising=False)
+
+        client.login(username='testadmin', password='testpassword')
+        url = reverse('admin:core_snapshot_changelist')
+        response = client.get(url, HTTP_HOST=ADMIN_HOST)
+
+        assert response.status_code == 200
+        assert b'example.com' in response.content
+
+    def test_list_view_avoids_output_dir_lookups(self, client, admin_user, snapshot, monkeypatch):
+        """Changelist links should render without probing snapshot paths on disk."""
+        from archivebox.core.models import Snapshot
+
+        def _output_dir_should_not_be_used(self):
+            raise AssertionError('admin changelist should not access Snapshot.output_dir')
+
+        monkeypatch.setattr(Snapshot, 'output_dir', property(_output_dir_should_not_be_used), raising=False)
+
+        client.login(username='testadmin', password='testpassword')
+        url = reverse('admin:core_snapshot_changelist')
+        response = client.get(url, HTTP_HOST=ADMIN_HOST)
+
+        assert response.status_code == 200
+        assert b'example.com' in response.content
+
     def test_grid_view_renders(self, client, admin_user):
         """Test that the grid view renders successfully."""
         client.login(username='testadmin', password='testpassword')