Refactor recipe metadata processing in RecipeRoutes

- Introduced a new RecipeParserFactory to streamline the parsing of recipe metadata from user comments, supporting multiple formats.
- Removed legacy metadata extraction logic from RecipeRoutes, delegating responsibilities to the new parser classes.
- Enhanced error handling for cases where no valid parser is found, ensuring graceful responses.
- Updated the RecipeScanner to improve the handling of LoRA metadata and reduce logging verbosity for better performance.
This commit is contained in:
Will Miao
2025-03-18 18:54:22 +08:00
parent 4264dd19a8
commit e2191ab4b4
4 changed files with 373 additions and 284 deletions

View File

@@ -58,77 +58,6 @@ class ExifUtils:
except Exception as e:
logger.error(f"Error updating EXIF data in {image_path}: {e}")
return image_path
@staticmethod
def parse_recipe_metadata(user_comment: str) -> Dict[str, Any]:
"""Parse recipe metadata from UserComment"""
try:
# Split by 'Negative prompt:' to get the prompt
parts = user_comment.split('Negative prompt:', 1)
prompt = parts[0].strip()
# Initialize metadata with prompt
metadata = {"prompt": prompt, "loras": [], "checkpoint": None}
# Extract additional fields if available
if len(parts) > 1:
negative_and_params = parts[1]
# Extract negative prompt
if "Steps:" in negative_and_params:
neg_prompt = negative_and_params.split("Steps:", 1)[0].strip()
metadata["negative_prompt"] = neg_prompt
# Extract key-value parameters (Steps, Sampler, CFG scale, etc.)
param_pattern = r'([A-Za-z ]+): ([^,]+)'
params = re.findall(param_pattern, negative_and_params)
for key, value in params:
clean_key = key.strip().lower().replace(' ', '_')
metadata[clean_key] = value.strip()
# Extract Civitai resources
if 'Civitai resources:' in user_comment:
resources_part = user_comment.split('Civitai resources:', 1)[1]
if '],' in resources_part:
resources_json = resources_part.split('],', 1)[0] + ']'
try:
resources = json.loads(resources_json)
# Filter loras and checkpoints
for resource in resources:
if resource.get('type') == 'lora':
# 确保 weight 字段被正确保留
lora_entry = resource.copy()
# 如果找不到 weight默认为 1.0
if 'weight' not in lora_entry:
lora_entry['weight'] = 1.0
# Ensure modelVersionName is included
if 'modelVersionName' not in lora_entry:
lora_entry['modelVersionName'] = ''
metadata['loras'].append(lora_entry)
elif resource.get('type') == 'checkpoint':
metadata['checkpoint'] = resource
except json.JSONDecodeError:
pass
return metadata
except Exception as e:
logger.error(f"Error parsing recipe metadata: {e}")
return {"prompt": user_comment, "loras": [], "checkpoint": None}
@staticmethod
def extract_recipe_metadata(user_comment: str) -> Optional[Dict]:
"""Extract recipe metadata section from UserComment if it exists"""
try:
# Look for recipe metadata section
recipe_match = re.search(r'Recipe metadata: (\{.*\})', user_comment, re.IGNORECASE | re.DOTALL)
if not recipe_match:
return None
recipe_json = recipe_match.group(1)
return json.loads(recipe_json)
except Exception as e:
logger.error(f"Error extracting recipe metadata: {e}")
return None
@staticmethod
def append_recipe_metadata(image_path, recipe_data) -> str:

355
py/utils/recipe_parsers.py Normal file
View File

@@ -0,0 +1,355 @@
import json
import logging
import os
import re
from typing import Dict, List, Any, Optional
from abc import ABC, abstractmethod
from ..config import config
logger = logging.getLogger(__name__)
class RecipeMetadataParser(ABC):
"""Interface for parsing recipe metadata from image user comments"""
METADATA_MARKER = None
@abstractmethod
def is_metadata_matching(self, user_comment: str) -> bool:
"""Check if the user comment matches the metadata format"""
pass
@abstractmethod
async def parse_metadata(self, user_comment: str, recipe_scanner=None, civitai_client=None) -> Dict[str, Any]:
"""
Parse metadata from user comment and return structured recipe data
Args:
user_comment: The EXIF UserComment string from the image
recipe_scanner: Optional recipe scanner instance for local LoRA lookup
civitai_client: Optional Civitai client for fetching model information
Returns:
Dict containing parsed recipe data with standardized format
"""
pass
class RecipeFormatParser(RecipeMetadataParser):
"""Parser for images with dedicated recipe metadata format"""
# Regular expression pattern for extracting recipe metadata
METADATA_MARKER = r'Recipe metadata: (\{.*\})'
def is_metadata_matching(self, user_comment: str) -> bool:
"""Check if the user comment matches the metadata format"""
return re.search(self.METADATA_MARKER, user_comment, re.IGNORECASE | re.DOTALL) is not None
async def parse_metadata(self, user_comment: str, recipe_scanner=None, civitai_client=None) -> Dict[str, Any]:
"""Parse metadata from images with dedicated recipe metadata format"""
try:
# Extract recipe metadata from user comment
try:
# Look for recipe metadata section
recipe_match = re.search(self.METADATA_MARKER, user_comment, re.IGNORECASE | re.DOTALL)
if not recipe_match:
recipe_metadata = None
else:
recipe_json = recipe_match.group(1)
recipe_metadata = json.loads(recipe_json)
except Exception as e:
logger.error(f"Error extracting recipe metadata: {e}")
recipe_metadata = None
if not recipe_metadata:
return {"error": "No recipe metadata found", "loras": []}
logger.info("Found existing recipe metadata in image")
# Process the recipe metadata
loras = []
for lora in recipe_metadata.get('loras', []):
# Convert recipe lora format to frontend format
lora_entry = {
'id': lora.get('modelVersionId', ''),
'name': lora.get('modelName', ''),
'version': lora.get('modelVersionName', ''),
'type': 'lora',
'weight': lora.get('strength', 1.0),
'file_name': lora.get('file_name', ''),
'hash': lora.get('hash', '')
}
# Check if this LoRA exists locally by SHA256 hash
if lora.get('hash') and recipe_scanner:
lora_scanner = recipe_scanner._lora_scanner
exists_locally = lora_scanner.has_lora_hash(lora['hash'])
if exists_locally:
lora_cache = await lora_scanner.get_cached_data()
lora_item = next((item for item in lora_cache.raw_data if item['sha256'] == lora['hash']), None)
if lora_item:
lora_entry['existsLocally'] = True
lora_entry['localPath'] = lora_item['file_path']
lora_entry['file_name'] = lora_item['file_name']
lora_entry['size'] = lora_item['size']
lora_entry['thumbnailUrl'] = config.get_preview_static_url(lora_item['preview_url'])
else:
lora_entry['existsLocally'] = False
lora_entry['localPath'] = None
# Try to get additional info from Civitai if we have a model version ID
if lora.get('modelVersionId') and civitai_client:
try:
civitai_info = await civitai_client.get_model_version_info(lora['modelVersionId'])
if civitai_info and civitai_info.get("error") != "Model not found":
# Get thumbnail URL from first image
if 'images' in civitai_info and civitai_info['images']:
lora_entry['thumbnailUrl'] = civitai_info['images'][0].get('url', '')
# Get base model
lora_entry['baseModel'] = civitai_info.get('baseModel', '')
# Get download URL
lora_entry['downloadUrl'] = civitai_info.get('downloadUrl', '')
# Get size from files if available
if 'files' in civitai_info:
model_file = next((file for file in civitai_info.get('files', [])
if file.get('type') == 'Model'), None)
if model_file:
lora_entry['size'] = model_file.get('sizeKB', 0) * 1024
else:
lora_entry['isDeleted'] = True
lora_entry['thumbnailUrl'] = '/loras_static/images/no-preview.png'
except Exception as e:
logger.error(f"Error fetching Civitai info for LoRA: {e}")
lora_entry['thumbnailUrl'] = '/loras_static/images/no-preview.png'
loras.append(lora_entry)
logger.info(f"Found {len(loras)} loras in recipe metadata")
return {
'base_model': recipe_metadata.get('base_model', ''),
'loras': loras,
'gen_params': recipe_metadata.get('gen_params', {}),
'tags': recipe_metadata.get('tags', []),
'title': recipe_metadata.get('title', ''),
'from_recipe_metadata': True
}
except Exception as e:
logger.error(f"Error parsing recipe format metadata: {e}", exc_info=True)
return {"error": str(e), "loras": []}
class StandardMetadataParser(RecipeMetadataParser):
"""Parser for images with standard civitai metadata format (prompt, negative prompt, etc.)"""
METADATA_MARKER = r'Civitai resources: '
def is_metadata_matching(self, user_comment: str) -> bool:
"""Check if the user comment matches the metadata format"""
return re.search(self.METADATA_MARKER, user_comment, re.IGNORECASE | re.DOTALL) is not None
async def parse_metadata(self, user_comment: str, recipe_scanner=None, civitai_client=None) -> Dict[str, Any]:
"""Parse metadata from images with standard metadata format"""
try:
# Parse the standard metadata
metadata = self._parse_recipe_metadata(user_comment)
# Look for Civitai resources in the metadata
civitai_resources = metadata.get('loras', [])
checkpoint = metadata.get('checkpoint')
if not civitai_resources and not checkpoint:
return {
"error": "No LoRA information found in this image",
"loras": []
}
# Process LoRAs and collect base models
base_model_counts = {}
loras = []
# Process LoRAs
for resource in civitai_resources:
# Get model version ID
model_version_id = resource.get('modelVersionId')
if not model_version_id:
continue
# Initialize lora entry with default values
lora_entry = {
'id': model_version_id,
'name': resource.get('modelName', ''),
'version': resource.get('modelVersionName', ''),
'type': resource.get('type', 'lora'),
'weight': resource.get('weight', 1.0),
'existsLocally': False,
'localPath': None,
'file_name': '',
'hash': '',
'thumbnailUrl': '',
'baseModel': '',
'size': 0,
'downloadUrl': '',
'isDeleted': False
}
# Get additional info from Civitai if client is available
if civitai_client:
civitai_info = await civitai_client.get_model_version_info(model_version_id)
# Check if this LoRA exists locally by SHA256 hash
if civitai_info and civitai_info.get("error") != "Model not found":
# LoRA exists on Civitai, process its information
if 'files' in civitai_info:
# Find the model file (type="Model") in the files list
model_file = next((file for file in civitai_info.get('files', [])
if file.get('type') == 'Model'), None)
if model_file and recipe_scanner:
sha256 = model_file.get('hashes', {}).get('SHA256', '')
if sha256:
lora_scanner = recipe_scanner._lora_scanner
exists_locally = lora_scanner.has_lora_hash(sha256)
if exists_locally:
local_path = lora_scanner.get_lora_path_by_hash(sha256)
lora_entry['existsLocally'] = True
lora_entry['localPath'] = local_path
lora_entry['file_name'] = os.path.splitext(os.path.basename(local_path))[0]
else:
# For missing LoRAs, get file_name from model_file.name
file_name = model_file.get('name', '')
lora_entry['file_name'] = os.path.splitext(file_name)[0] if file_name else ''
lora_entry['hash'] = sha256
lora_entry['size'] = model_file.get('sizeKB', 0) * 1024
# Get thumbnail URL from first image
if 'images' in civitai_info and civitai_info['images']:
lora_entry['thumbnailUrl'] = civitai_info['images'][0].get('url', '')
# Get base model and update counts
current_base_model = civitai_info.get('baseModel', '')
lora_entry['baseModel'] = current_base_model
if current_base_model:
base_model_counts[current_base_model] = base_model_counts.get(current_base_model, 0) + 1
# Get download URL
lora_entry['downloadUrl'] = civitai_info.get('downloadUrl', '')
else:
# LoRA is deleted from Civitai or not found
lora_entry['isDeleted'] = True
lora_entry['thumbnailUrl'] = '/loras_static/images/no-preview.png'
loras.append(lora_entry)
# Set base_model to the most common one from civitai_info
base_model = None
if base_model_counts:
base_model = max(base_model_counts.items(), key=lambda x: x[1])[0]
# Extract generation parameters for recipe metadata
gen_params = {
'prompt': metadata.get('prompt', ''),
'negative_prompt': metadata.get('negative_prompt', ''),
'checkpoint': checkpoint,
'steps': metadata.get('steps', ''),
'sampler': metadata.get('sampler', ''),
'cfg_scale': metadata.get('cfg_scale', ''),
'seed': metadata.get('seed', ''),
'size': metadata.get('size', ''),
'clip_skip': metadata.get('clip_skip', '')
}
return {
'base_model': base_model,
'loras': loras,
'gen_params': gen_params,
'raw_metadata': metadata
}
except Exception as e:
logger.error(f"Error parsing standard metadata: {e}", exc_info=True)
return {"error": str(e), "loras": []}
def _parse_recipe_metadata(self, user_comment: str) -> Dict[str, Any]:
"""Parse recipe metadata from UserComment"""
try:
# Split by 'Negative prompt:' to get the prompt
parts = user_comment.split('Negative prompt:', 1)
prompt = parts[0].strip()
# Initialize metadata with prompt
metadata = {"prompt": prompt, "loras": [], "checkpoint": None}
# Extract additional fields if available
if len(parts) > 1:
negative_and_params = parts[1]
# Extract negative prompt
if "Steps:" in negative_and_params:
neg_prompt = negative_and_params.split("Steps:", 1)[0].strip()
metadata["negative_prompt"] = neg_prompt
# Extract key-value parameters (Steps, Sampler, CFG scale, etc.)
param_pattern = r'([A-Za-z ]+): ([^,]+)'
params = re.findall(param_pattern, negative_and_params)
for key, value in params:
clean_key = key.strip().lower().replace(' ', '_')
metadata[clean_key] = value.strip()
# Extract Civitai resources
if 'Civitai resources:' in user_comment:
resources_part = user_comment.split('Civitai resources:', 1)[1]
if '],' in resources_part:
resources_json = resources_part.split('],', 1)[0] + ']'
try:
resources = json.loads(resources_json)
# Filter loras and checkpoints
for resource in resources:
if resource.get('type') == 'lora':
# 确保 weight 字段被正确保留
lora_entry = resource.copy()
# 如果找不到 weight默认为 1.0
if 'weight' not in lora_entry:
lora_entry['weight'] = 1.0
# Ensure modelVersionName is included
if 'modelVersionName' not in lora_entry:
lora_entry['modelVersionName'] = ''
metadata['loras'].append(lora_entry)
elif resource.get('type') == 'checkpoint':
metadata['checkpoint'] = resource
except json.JSONDecodeError:
pass
return metadata
except Exception as e:
logger.error(f"Error parsing recipe metadata: {e}")
return {"prompt": user_comment, "loras": [], "checkpoint": None}
class RecipeParserFactory:
"""Factory for creating recipe metadata parsers"""
@staticmethod
def create_parser(user_comment: str) -> RecipeMetadataParser:
"""
Create appropriate parser based on the user comment content
Args:
user_comment: The EXIF UserComment string from the image
Returns:
Appropriate RecipeMetadataParser implementation
"""
if RecipeFormatParser().is_metadata_matching(user_comment):
print("RecipeFormatParser")
return RecipeFormatParser()
elif StandardMetadataParser().is_metadata_matching(user_comment):
print("StandardMetadataParser")
return StandardMetadataParser()
else:
print("None")
return None