ComfyUI/app/frontend_management.py
2025-06-01 15:32:02 +01:00

354 lines
12 KiB
Python

from __future__ import annotations
import argparse
import logging
import os
import re
import sys
import tempfile
import zipfile
import importlib
from dataclasses import dataclass
from functools import cached_property
from pathlib import Path
from typing import TypedDict, Optional
from importlib.metadata import version
import requests
from typing_extensions import NotRequired
from utils.install_util import get_missing_requirements_message, requirements_path
from comfy.cli_args import DEFAULT_VERSION_STRING
import app.logger
def frontend_install_warning_message():
return f"""
{get_missing_requirements_message()}
This error is happening because the ComfyUI frontend is no longer shipped as part of the main repo but as a pip package instead.
""".strip()
def check_frontend_version():
"""Check if the frontend version is up to date."""
def parse_version(version: str) -> tuple[int, int, int]:
return tuple(map(int, version.split(".")))
try:
frontend_version_str = version("comfyui-frontend-package")
frontend_version = parse_version(frontend_version_str)
with open(requirements_path, "r", encoding="utf-8") as f:
required_frontend = parse_version(f.readline().split("=")[-1])
if frontend_version < required_frontend:
app.logger.log_startup_warning(
f"""
________________________________________________________________________
WARNING WARNING WARNING WARNING WARNING
Installed frontend version {".".join(map(str, frontend_version))} is lower than the recommended version {".".join(map(str, required_frontend))}.
{frontend_install_warning_message()}
________________________________________________________________________
""".strip()
)
else:
logging.info("ComfyUI frontend version: {}".format(frontend_version_str))
except Exception as e:
logging.error(f"Failed to check frontend version: {e}")
REQUEST_TIMEOUT = 10 # seconds
class Asset(TypedDict):
url: str
class Release(TypedDict):
id: int
tag_name: str
name: str
prerelease: bool
created_at: str
published_at: str
body: str
assets: NotRequired[list[Asset]]
@dataclass
class FrontEndProvider:
owner: str
repo: str
@property
def folder_name(self) -> str:
return f"{self.owner}_{self.repo}"
@property
def release_url(self) -> str:
return f"https://api.github.com/repos/{self.owner}/{self.repo}/releases"
@cached_property
def all_releases(self) -> list[Release]:
releases = []
api_url = self.release_url
while api_url:
response = requests.get(api_url, timeout=REQUEST_TIMEOUT)
response.raise_for_status() # Raises an HTTPError if the response was an error
releases.extend(response.json())
# GitHub uses the Link header to provide pagination links. Check if it exists and update api_url accordingly.
if "next" in response.links:
api_url = response.links["next"]["url"]
else:
api_url = None
return releases
@cached_property
def latest_release(self) -> Release:
latest_release_url = f"{self.release_url}/latest"
response = requests.get(latest_release_url, timeout=REQUEST_TIMEOUT)
response.raise_for_status() # Raises an HTTPError if the response was an error
return response.json()
def get_release(self, version: str) -> Release:
if version == "latest":
return self.latest_release
else:
for release in self.all_releases:
if release["tag_name"] in [version, f"v{version}"]:
return release
raise ValueError(f"Version {version} not found in releases")
def download_release_asset_zip(release: Release, destination_path: str) -> None:
"""Download dist.zip from github release."""
asset_url = None
for asset in release.get("assets", []):
if asset["name"] == "dist.zip":
asset_url = asset["url"]
break
if not asset_url:
raise ValueError("dist.zip not found in the release assets")
# Use a temporary file to download the zip content
with tempfile.TemporaryFile() as tmp_file:
headers = {"Accept": "application/octet-stream"}
response = requests.get(
asset_url, headers=headers, allow_redirects=True, timeout=REQUEST_TIMEOUT
)
response.raise_for_status() # Ensure we got a successful response
# Write the content to the temporary file
tmp_file.write(response.content)
# Go back to the beginning of the temporary file
tmp_file.seek(0)
# Extract the zip file content to the destination path
with zipfile.ZipFile(tmp_file, "r") as zip_ref:
zip_ref.extractall(destination_path)
class FrontendManager:
"""
A class to manage ComfyUI frontend versions and installations.
This class handles the initialization and management of different frontend versions,
including the default frontend from the pip package and custom frontend versions
from GitHub repositories.
Attributes:
CUSTOM_FRONTENDS_ROOT (str): The root directory where custom frontend versions are stored.
"""
CUSTOM_FRONTENDS_ROOT = str(Path(__file__).parents[1] / "web_custom_versions")
@classmethod
def default_frontend_path(cls) -> str:
"""
Get the path to the default frontend installation from the pip package.
Returns:
str: The path to the default frontend static files.
Raises:
SystemExit: If the comfyui-frontend-package is not installed.
"""
try:
import comfyui_frontend_package
return str(importlib.resources.files(comfyui_frontend_package) / "static")
except ImportError:
logging.error(
f"""
********** ERROR ***********
comfyui-frontend-package is not installed.
{frontend_install_warning_message()}
********** ERROR ***********
""".strip()
)
sys.exit(-1)
@classmethod
def templates_path(cls) -> str:
"""
Get the path to the workflow templates.
Returns:
str: The path to the workflow templates directory.
Raises:
SystemExit: If the comfyui-workflow-templates package is not installed.
"""
try:
import comfyui_workflow_templates
return str(
importlib.resources.files(comfyui_workflow_templates) / "templates"
)
except ImportError:
logging.error(
f"""
********** ERROR ***********
comfyui-workflow-templates is not installed.
{frontend_install_warning_message()}
********** ERROR ***********
""".strip()
)
@classmethod
def embedded_docs_path(cls) -> str:
"""Get the path to embedded documentation"""
try:
import comfyui_embedded_docs
return str(
importlib.resources.files(comfyui_embedded_docs) / "docs"
)
except ImportError:
logging.info("comfyui-embedded-docs package not found")
return None
@classmethod
def parse_version_string(cls, value: str) -> tuple[str, str, str]:
"""
Parse a version string into its components.
The version string should be in the format: 'owner/repo@version'
where version can be either a semantic version (v1.2.3) or 'latest'.
Args:
value (str): The version string to parse.
Returns:
tuple[str, str, str]: A tuple containing (owner, repo, version).
Raises:
argparse.ArgumentTypeError: If the version string is invalid.
"""
VERSION_PATTERN = r"^([a-zA-Z0-9][a-zA-Z0-9-]{0,38})/([a-zA-Z0-9_.-]+)@(v?\d+\.\d+\.\d+|latest)$"
match_result = re.match(VERSION_PATTERN, value)
if match_result is None:
raise argparse.ArgumentTypeError(f"Invalid version string: {value}")
return match_result.group(1), match_result.group(2), match_result.group(3)
@classmethod
def init_frontend_unsafe(
cls, version_string: str, provider: Optional[FrontEndProvider] = None
) -> str:
"""
Initialize a frontend version without error handling.
This method attempts to initialize a specific frontend version, either from
the default pip package or from a custom GitHub repository. It will download
and extract the frontend files if necessary.
Args:
version_string (str): The version string specifying which frontend to use.
provider (FrontEndProvider, optional): The provider to use for custom frontends.
Returns:
str: The path to the initialized frontend.
Raises:
Exception: If there is an error during initialization (e.g., network timeout,
invalid URL, or missing assets).
"""
if version_string == DEFAULT_VERSION_STRING:
check_frontend_version()
return cls.default_frontend_path()
repo_owner, repo_name, version = cls.parse_version_string(version_string)
if version.startswith("v"):
expected_path = str(
Path(cls.CUSTOM_FRONTENDS_ROOT)
/ f"{repo_owner}_{repo_name}"
/ version.lstrip("v")
)
if os.path.exists(expected_path):
logging.info(
f"Using existing copy of specific frontend version tag: {repo_owner}/{repo_name}@{version}"
)
return expected_path
logging.info(
f"Initializing frontend: {repo_owner}/{repo_name}@{version}, requesting version details from GitHub..."
)
provider = provider or FrontEndProvider(repo_owner, repo_name)
release = provider.get_release(version)
semantic_version = release["tag_name"].lstrip("v")
web_root = str(
Path(cls.CUSTOM_FRONTENDS_ROOT) / provider.folder_name / semantic_version
)
if not os.path.exists(web_root):
try:
os.makedirs(web_root, exist_ok=True)
logging.info(
"Downloading frontend(%s) version(%s) to (%s)",
provider.folder_name,
semantic_version,
web_root,
)
logging.debug(release)
download_release_asset_zip(release, destination_path=web_root)
finally:
# Clean up the directory if it is empty, i.e. the download failed
if not os.listdir(web_root):
os.rmdir(web_root)
return web_root
@classmethod
def init_frontend(cls, version_string: str) -> str:
"""
Initialize a frontend version with error handling.
This is the main method to initialize a frontend version. It wraps init_frontend_unsafe
with error handling, falling back to the default frontend if initialization fails.
Args:
version_string (str): The version string specifying which frontend to use.
Returns:
str: The path to the initialized frontend. If initialization fails,
returns the path to the default frontend.
"""
try:
return cls.init_frontend_unsafe(version_string)
except Exception as e:
logging.error("Failed to initialize frontend: %s", e)
logging.info("Falling back to the default frontend.")
check_frontend_version()
return cls.default_frontend_path()