Improve backup admin error visibility and log celery tracebacks

src/apps/backups/admin.py

@@ -3,12 +3,15 @@
 from apps.backups.models import BackupExportJob
 from apps.backups.serializers import BackupExportRequestSerializer
 from apps.backups.services import BackupExportError, BackupExportJobService
+from apps.core.services import BackgroundJobService
 from django.contrib import admin
 from django.contrib import messages
 from django.http import HttpResponse
 from django.shortcuts import redirect
 from django.urls import path, reverse
+from django.utils.html import format_html
 from django.utils import timezone
+from urllib.parse import urlencode
 
 
 @admin.register(BackupExportJob)
@@ -23,9 +26,11 @@ class BackupExportJobAdmin(admin.ModelAdmin):
         "requested_by",
         "organizations_count",
         "archive_size",
+        "error_short",
         "started_at",
         "completed_at",
     ]
+    list_display_links = ["id"]
     list_filter = ["status", "actual_date", "created_at", "completed_at"]
     search_fields = ["task_id", "checksum_sha256", "archive_filename"]
     readonly_fields = [
@@ -37,14 +42,113 @@ class BackupExportJobAdmin(admin.ModelAdmin):
         "archive_size",
         "organizations_count",
         "error",
+        "background_job_link",
+        "background_job_error",
+        "background_job_traceback",
         "started_at",
         "completed_at",
         "created_at",
         "updated_at",
     ]
+    fieldsets = (
+        (
+            "Основные поля",
+            {"fields": ("actual_date", "status", "task_id", "background_job_link")},
+        ),
+        (
+            "Исполнитель",
+            {"fields": ("requested_by",)},
+        ),
+        (
+            "Результат",
+            {
+                "fields": (
+                    "archive_path",
+                    "archive_filename",
+                    "checksum_filename",
+                    "checksum_sha256",
+                    "archive_size",
+                    "organizations_count",
+                )
+            },
+        ),
+        (
+            "Ошибка",
+            {
+                "fields": (
+                    "error",
+                    "background_job_error",
+                    "background_job_traceback",
+                ),
+                "classes": ("collapse",),
+            },
+        ),
+        (
+            "Время",
+            {"fields": ("started_at", "completed_at", "created_at", "updated_at")},
+        ),
+    )
     ordering = ["-actual_date", "-created_at"]
     change_list_template = "admin/backups/backupexportjob/change_list.html"
 
+    @staticmethod
+    def _format_error_text(text: str) -> str:
+        """Сократить и безопасно форматировать текст ошибки для списка."""
+        if not text:
+            return "—"
+        text = text.strip()
+        return text if len(text) <= 120 else f"{text[:117]}…"
+
+    def error_short(self, obj: BackupExportJob) -> str:
+        """Короткий текст ошибки для списка."""
+        return self._format_error_text(obj.error)
+
+    error_short.short_description = "Ошибка"
+
+    def _get_background_job(self, obj: BackupExportJob):
+        if not obj.task_id:
+            return None
+        return BackgroundJobService.get_by_task_id_or_none(obj.task_id)
+
+    def background_job_link(self, obj: BackupExportJob):
+        background_job = self._get_background_job(obj)
+        if not background_job:
+            return "—"
+        changelist_url = (
+            reverse("admin:core_backgroundjob_changelist")
+            + "?"
+            + urlencode({"q": background_job.task_id})
+        )
+        return format_html(
+            '<a href="{}">Открыть в журнале задач: {}</a>',
+            changelist_url,
+            background_job.task_id,
+        )
+
+    background_job_link.short_description = "Celery задача"
+
+    def background_job_error(self, obj: BackupExportJob) -> str:
+        background_job = self._get_background_job(obj)
+        if not background_job:
+            return "—"
+        if background_job.error:
+            return background_job.error
+        return "—"
+
+    background_job_error.short_description = "Ошибка в Celery"
+
+    def background_job_traceback(self, obj: BackupExportJob):
+        background_job = self._get_background_job(obj)
+        if not background_job or not background_job.traceback:
+            return "—"
+        return format_html(
+            '<pre style="white-space: pre-wrap; max-height: 400px; overflow: auto; '
+            'background: #f8f9fa; border: 1px solid #dee2e6; padding: 8px;">{}</pre>',
+            background_job.traceback,
+        )
+
+    background_job_traceback.short_description = "Traceback из фоновой задачи"
+
     def get_urls(self):
         urls = super().get_urls()
         custom_urls = [

src/apps/backups/tasks.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import logging
+import traceback
 import uuid
 from pathlib import Path
 
@@ -109,9 +110,10 @@ def generate_backup_for_date(self, job_id: int) -> dict:
             job.actual_date,
             job.id,
         )
+        error_traceback = traceback.format_exc()
         job.status = BackupExportJob.Status.FAILURE
         job.error = str(exc)
         job.completed_at = timezone.now()
         job.save(update_fields=["status", "error", "completed_at", "updated_at"])
-        background_job.fail(error=str(exc))
+        background_job.fail(error=str(exc), traceback_str=error_traceback)
         raise