Files
ComfyUI-Lora-Manager/py/routes/handlers/recipe_handlers.py
2025-09-22 13:45:40 +08:00

726 lines
32 KiB
Python

"""Dedicated handler objects for recipe-related routes."""
from __future__ import annotations
import json
import logging
import os
from dataclasses import dataclass
from typing import Any, Awaitable, Callable, Dict, Mapping, Optional
from aiohttp import web
from ...config import config
from ...services.server_i18n import server_i18n as default_server_i18n
from ...services.settings_manager import SettingsManager
from ...services.recipes import (
RecipeAnalysisService,
RecipeDownloadError,
RecipeNotFoundError,
RecipePersistenceService,
RecipeSharingService,
RecipeValidationError,
)
Logger = logging.Logger
EnsureDependenciesCallable = Callable[[], Awaitable[None]]
RecipeScannerGetter = Callable[[], Any]
CivitaiClientGetter = Callable[[], Any]
@dataclass(frozen=True)
class RecipeHandlerSet:
"""Group of handlers providing recipe route implementations."""
page_view: "RecipePageView"
listing: "RecipeListingHandler"
query: "RecipeQueryHandler"
management: "RecipeManagementHandler"
analysis: "RecipeAnalysisHandler"
sharing: "RecipeSharingHandler"
def to_route_mapping(self) -> Mapping[str, Callable[[web.Request], Awaitable[web.StreamResponse]]]:
"""Expose handler coroutines keyed by registrar handler names."""
return {
"render_page": self.page_view.render_page,
"list_recipes": self.listing.list_recipes,
"get_recipe": self.listing.get_recipe,
"analyze_uploaded_image": self.analysis.analyze_uploaded_image,
"analyze_local_image": self.analysis.analyze_local_image,
"save_recipe": self.management.save_recipe,
"delete_recipe": self.management.delete_recipe,
"get_top_tags": self.query.get_top_tags,
"get_base_models": self.query.get_base_models,
"share_recipe": self.sharing.share_recipe,
"download_shared_recipe": self.sharing.download_shared_recipe,
"get_recipe_syntax": self.query.get_recipe_syntax,
"update_recipe": self.management.update_recipe,
"reconnect_lora": self.management.reconnect_lora,
"find_duplicates": self.query.find_duplicates,
"bulk_delete": self.management.bulk_delete,
"save_recipe_from_widget": self.management.save_recipe_from_widget,
"get_recipes_for_lora": self.query.get_recipes_for_lora,
"scan_recipes": self.query.scan_recipes,
}
class RecipePageView:
"""Render the recipe shell page."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
settings_service: SettingsManager,
server_i18n=default_server_i18n,
template_env,
template_name: str,
recipe_scanner_getter: RecipeScannerGetter,
logger: Logger,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._settings = settings_service
self._server_i18n = server_i18n
self._template_env = template_env
self._template_name = template_name
self._recipe_scanner_getter = recipe_scanner_getter
self._logger = logger
async def render_page(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None: # pragma: no cover - defensive guard
raise RuntimeError("Recipe scanner not available")
user_language = self._settings.get("language", "en")
self._server_i18n.set_locale(user_language)
try:
await recipe_scanner.get_cached_data(force_refresh=False)
rendered = self._template_env.get_template(self._template_name).render(
recipes=[],
is_initializing=False,
settings=self._settings,
request=request,
t=self._server_i18n.get_translation,
)
except Exception as cache_error: # pragma: no cover - logging path
self._logger.error("Error loading recipe cache data: %s", cache_error)
rendered = self._template_env.get_template(self._template_name).render(
is_initializing=True,
settings=self._settings,
request=request,
t=self._server_i18n.get_translation,
)
return web.Response(text=rendered, content_type="text/html")
except Exception as exc: # pragma: no cover - logging path
self._logger.error("Error handling recipes request: %s", exc, exc_info=True)
return web.Response(text="Error loading recipes page", status=500)
class RecipeListingHandler:
"""Provide listing and detail APIs for recipes."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
recipe_scanner_getter: RecipeScannerGetter,
logger: Logger,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._recipe_scanner_getter = recipe_scanner_getter
self._logger = logger
async def list_recipes(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
page = int(request.query.get("page", "1"))
page_size = int(request.query.get("page_size", "20"))
sort_by = request.query.get("sort_by", "date")
search = request.query.get("search")
search_options = {
"title": request.query.get("search_title", "true").lower() == "true",
"tags": request.query.get("search_tags", "true").lower() == "true",
"lora_name": request.query.get("search_lora_name", "true").lower() == "true",
"lora_model": request.query.get("search_lora_model", "true").lower() == "true",
}
filters: Dict[str, list[str]] = {}
base_models = request.query.get("base_models")
if base_models:
filters["base_model"] = base_models.split(",")
tags = request.query.get("tags")
if tags:
filters["tags"] = tags.split(",")
lora_hash = request.query.get("lora_hash")
result = await recipe_scanner.get_paginated_data(
page=page,
page_size=page_size,
sort_by=sort_by,
search=search,
filters=filters,
search_options=search_options,
lora_hash=lora_hash,
)
for item in result.get("items", []):
file_path = item.get("file_path")
if file_path:
item["file_url"] = self.format_recipe_file_url(file_path)
else:
item.setdefault("file_url", "/loras_static/images/no-preview.png")
item.setdefault("loras", [])
item.setdefault("base_model", "")
return web.json_response(result)
except Exception as exc:
self._logger.error("Error retrieving recipes: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def get_recipe(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
recipe = await recipe_scanner.get_recipe_by_id(recipe_id)
if not recipe:
return web.json_response({"error": "Recipe not found"}, status=404)
return web.json_response(recipe)
except Exception as exc:
self._logger.error("Error retrieving recipe details: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
def format_recipe_file_url(self, file_path: str) -> str:
try:
recipes_dir = os.path.join(config.loras_roots[0], "recipes").replace(os.sep, "/")
normalized_path = file_path.replace(os.sep, "/")
if normalized_path.startswith(recipes_dir):
relative_path = os.path.relpath(file_path, config.loras_roots[0]).replace(os.sep, "/")
return f"/loras_static/root1/preview/{relative_path}"
file_name = os.path.basename(file_path)
return f"/loras_static/root1/preview/recipes/{file_name}"
except Exception as exc: # pragma: no cover - logging path
self._logger.error("Error formatting recipe file URL: %s", exc, exc_info=True)
return "/loras_static/images/no-preview.png"
class RecipeQueryHandler:
"""Provide read-only insights on recipe data."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
recipe_scanner_getter: RecipeScannerGetter,
format_recipe_file_url: Callable[[str], str],
logger: Logger,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._recipe_scanner_getter = recipe_scanner_getter
self._format_recipe_file_url = format_recipe_file_url
self._logger = logger
async def get_top_tags(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
limit = int(request.query.get("limit", "20"))
cache = await recipe_scanner.get_cached_data()
tag_counts: Dict[str, int] = {}
for recipe in getattr(cache, "raw_data", []):
for tag in recipe.get("tags", []) or []:
tag_counts[tag] = tag_counts.get(tag, 0) + 1
sorted_tags = [{"tag": tag, "count": count} for tag, count in tag_counts.items()]
sorted_tags.sort(key=lambda entry: entry["count"], reverse=True)
return web.json_response({"success": True, "tags": sorted_tags[:limit]})
except Exception as exc:
self._logger.error("Error retrieving top tags: %s", exc, exc_info=True)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def get_base_models(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
cache = await recipe_scanner.get_cached_data()
base_model_counts: Dict[str, int] = {}
for recipe in getattr(cache, "raw_data", []):
base_model = recipe.get("base_model")
if base_model:
base_model_counts[base_model] = base_model_counts.get(base_model, 0) + 1
sorted_models = [{"name": model, "count": count} for model, count in base_model_counts.items()]
sorted_models.sort(key=lambda entry: entry["count"], reverse=True)
return web.json_response({"success": True, "base_models": sorted_models})
except Exception as exc:
self._logger.error("Error retrieving base models: %s", exc, exc_info=True)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def get_recipes_for_lora(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
lora_hash = request.query.get("hash")
if not lora_hash:
return web.json_response({"success": False, "error": "Lora hash is required"}, status=400)
matching_recipes = await recipe_scanner.get_recipes_for_lora(lora_hash)
return web.json_response({"success": True, "recipes": matching_recipes})
except Exception as exc:
self._logger.error("Error getting recipes for Lora: %s", exc)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def scan_recipes(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
self._logger.info("Manually triggering recipe cache rebuild")
await recipe_scanner.get_cached_data(force_refresh=True)
return web.json_response({"success": True, "message": "Recipe cache refreshed successfully"})
except Exception as exc:
self._logger.error("Error refreshing recipe cache: %s", exc, exc_info=True)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def find_duplicates(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
duplicate_groups = await recipe_scanner.find_all_duplicate_recipes()
response_data = []
for fingerprint, recipe_ids in duplicate_groups.items():
if len(recipe_ids) <= 1:
continue
recipes = []
for recipe_id in recipe_ids:
recipe = await recipe_scanner.get_recipe_by_id(recipe_id)
if recipe:
recipes.append(
{
"id": recipe.get("id"),
"title": recipe.get("title"),
"file_url": recipe.get("file_url")
or self._format_recipe_file_url(recipe.get("file_path", "")),
"modified": recipe.get("modified"),
"created_date": recipe.get("created_date"),
"lora_count": len(recipe.get("loras", [])),
}
)
if len(recipes) >= 2:
recipes.sort(key=lambda entry: entry.get("modified", 0), reverse=True)
response_data.append(
{
"fingerprint": fingerprint,
"count": len(recipes),
"recipes": recipes,
}
)
response_data.sort(key=lambda entry: entry["count"], reverse=True)
return web.json_response({"success": True, "duplicate_groups": response_data})
except Exception as exc:
self._logger.error("Error finding duplicate recipes: %s", exc, exc_info=True)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def get_recipe_syntax(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
try:
syntax_parts = await recipe_scanner.get_recipe_syntax_tokens(recipe_id)
except RecipeNotFoundError:
return web.json_response({"error": "Recipe not found"}, status=404)
if not syntax_parts:
return web.json_response({"error": "No LoRAs found in this recipe"}, status=400)
return web.json_response({"success": True, "syntax": " ".join(syntax_parts)})
except Exception as exc:
self._logger.error("Error generating recipe syntax: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
class RecipeManagementHandler:
"""Handle create/update/delete style recipe operations."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
recipe_scanner_getter: RecipeScannerGetter,
logger: Logger,
persistence_service: RecipePersistenceService,
analysis_service: RecipeAnalysisService,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._recipe_scanner_getter = recipe_scanner_getter
self._logger = logger
self._persistence_service = persistence_service
self._analysis_service = analysis_service
async def save_recipe(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
reader = await request.multipart()
payload = await self._parse_save_payload(reader)
result = await self._persistence_service.save_recipe(
recipe_scanner=recipe_scanner,
image_bytes=payload["image_bytes"],
image_base64=payload["image_base64"],
name=payload["name"],
tags=payload["tags"],
metadata=payload["metadata"],
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"error": str(exc)}, status=400)
except Exception as exc:
self._logger.error("Error saving recipe: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def delete_recipe(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
result = await self._persistence_service.delete_recipe(
recipe_scanner=recipe_scanner, recipe_id=recipe_id
)
return web.json_response(result.payload, status=result.status)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error deleting recipe: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def update_recipe(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
data = await request.json()
result = await self._persistence_service.update_recipe(
recipe_scanner=recipe_scanner, recipe_id=recipe_id, updates=data
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"error": str(exc)}, status=400)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error updating recipe: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def reconnect_lora(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
data = await request.json()
for field in ("recipe_id", "lora_index", "target_name"):
if field not in data:
raise RecipeValidationError(f"Missing required field: {field}")
result = await self._persistence_service.reconnect_lora(
recipe_scanner=recipe_scanner,
recipe_id=data["recipe_id"],
lora_index=int(data["lora_index"]),
target_name=data["target_name"],
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"error": str(exc)}, status=400)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error reconnecting LoRA: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def bulk_delete(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
data = await request.json()
recipe_ids = data.get("recipe_ids", [])
result = await self._persistence_service.bulk_delete(
recipe_scanner=recipe_scanner, recipe_ids=recipe_ids
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"success": False, "error": str(exc)}, status=400)
except RecipeNotFoundError as exc:
return web.json_response({"success": False, "error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error performing bulk delete: %s", exc, exc_info=True)
return web.json_response({"success": False, "error": str(exc)}, status=500)
async def save_recipe_from_widget(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
analysis = await self._analysis_service.analyze_widget_metadata(
recipe_scanner=recipe_scanner
)
metadata = analysis.payload.get("metadata")
image_bytes = analysis.payload.get("image_bytes")
if not metadata or image_bytes is None:
raise RecipeValidationError("Unable to extract metadata from widget")
result = await self._persistence_service.save_recipe_from_widget(
recipe_scanner=recipe_scanner,
metadata=metadata,
image_bytes=image_bytes,
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"error": str(exc)}, status=400)
except Exception as exc:
self._logger.error("Error saving recipe from widget: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def _parse_save_payload(self, reader) -> dict[str, Any]:
image_bytes: Optional[bytes] = None
image_base64: Optional[str] = None
name: Optional[str] = None
tags: list[str] = []
metadata: Optional[Dict[str, Any]] = None
while True:
field = await reader.next()
if field is None:
break
if field.name == "image":
image_chunks = bytearray()
while True:
chunk = await field.read_chunk()
if not chunk:
break
image_chunks.extend(chunk)
image_bytes = bytes(image_chunks)
elif field.name == "image_base64":
image_base64 = await field.text()
elif field.name == "name":
name = await field.text()
elif field.name == "tags":
tags_text = await field.text()
try:
parsed_tags = json.loads(tags_text)
tags = parsed_tags if isinstance(parsed_tags, list) else []
except Exception:
tags = []
elif field.name == "metadata":
metadata_text = await field.text()
try:
metadata = json.loads(metadata_text)
except Exception:
metadata = {}
return {
"image_bytes": image_bytes,
"image_base64": image_base64,
"name": name,
"tags": tags,
"metadata": metadata,
}
class RecipeAnalysisHandler:
"""Analyze images to extract recipe metadata."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
recipe_scanner_getter: RecipeScannerGetter,
civitai_client_getter: CivitaiClientGetter,
logger: Logger,
analysis_service: RecipeAnalysisService,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._recipe_scanner_getter = recipe_scanner_getter
self._civitai_client_getter = civitai_client_getter
self._logger = logger
self._analysis_service = analysis_service
async def analyze_uploaded_image(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
civitai_client = self._civitai_client_getter()
if recipe_scanner is None or civitai_client is None:
raise RuntimeError("Required services unavailable")
content_type = request.headers.get("Content-Type", "")
if "multipart/form-data" in content_type:
reader = await request.multipart()
field = await reader.next()
if field is None or field.name != "image":
raise RecipeValidationError("No image field found")
image_chunks = bytearray()
while True:
chunk = await field.read_chunk()
if not chunk:
break
image_chunks.extend(chunk)
result = await self._analysis_service.analyze_uploaded_image(
image_bytes=bytes(image_chunks),
recipe_scanner=recipe_scanner,
)
return web.json_response(result.payload, status=result.status)
if "application/json" in content_type:
data = await request.json()
result = await self._analysis_service.analyze_remote_image(
url=data.get("url"),
recipe_scanner=recipe_scanner,
civitai_client=civitai_client,
)
return web.json_response(result.payload, status=result.status)
raise RecipeValidationError("Unsupported content type")
except RecipeValidationError as exc:
return web.json_response({"error": str(exc), "loras": []}, status=400)
except RecipeDownloadError as exc:
return web.json_response({"error": str(exc), "loras": []}, status=400)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc), "loras": []}, status=404)
except Exception as exc:
self._logger.error("Error analyzing recipe image: %s", exc, exc_info=True)
return web.json_response({"error": str(exc), "loras": []}, status=500)
async def analyze_local_image(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
data = await request.json()
result = await self._analysis_service.analyze_local_image(
file_path=data.get("path"),
recipe_scanner=recipe_scanner,
)
return web.json_response(result.payload, status=result.status)
except RecipeValidationError as exc:
return web.json_response({"error": str(exc), "loras": []}, status=400)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc), "loras": []}, status=404)
except Exception as exc:
self._logger.error("Error analyzing local image: %s", exc, exc_info=True)
return web.json_response({"error": str(exc), "loras": []}, status=500)
class RecipeSharingHandler:
"""Serve endpoints related to recipe sharing."""
def __init__(
self,
*,
ensure_dependencies_ready: EnsureDependenciesCallable,
recipe_scanner_getter: RecipeScannerGetter,
logger: Logger,
sharing_service: RecipeSharingService,
) -> None:
self._ensure_dependencies_ready = ensure_dependencies_ready
self._recipe_scanner_getter = recipe_scanner_getter
self._logger = logger
self._sharing_service = sharing_service
async def share_recipe(self, request: web.Request) -> web.Response:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
result = await self._sharing_service.share_recipe(
recipe_scanner=recipe_scanner, recipe_id=recipe_id
)
return web.json_response(result.payload, status=result.status)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error sharing recipe: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)
async def download_shared_recipe(self, request: web.Request) -> web.StreamResponse:
try:
await self._ensure_dependencies_ready()
recipe_scanner = self._recipe_scanner_getter()
if recipe_scanner is None:
raise RuntimeError("Recipe scanner unavailable")
recipe_id = request.match_info["recipe_id"]
download_info = await self._sharing_service.prepare_download(
recipe_scanner=recipe_scanner, recipe_id=recipe_id
)
return web.FileResponse(
download_info.file_path,
headers={
"Content-Disposition": f'attachment; filename="{download_info.download_filename}"'
},
)
except RecipeNotFoundError as exc:
return web.json_response({"error": str(exc)}, status=404)
except Exception as exc:
self._logger.error("Error downloading shared recipe: %s", exc, exc_info=True)
return web.json_response({"error": str(exc)}, status=500)