350 lines
12 KiB
Python
350 lines
12 KiB
Python
"""
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* SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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"""
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__all__ = ["list_workflows", "get_workflow", "save_workflow"]
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import json
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from pathlib import Path
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from typing import Any
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from aiohttp import web
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import folder_paths
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from server import PromptServer
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from .constants import get_base_url, WORKFLOWS_PREFIX, API_WORKFLOWS_DIR, WORKFLOWS_DIR, REMIX_USER_ID
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from .enums import PathType, SourceType
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prompt_server = PromptServer.instance
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routes = prompt_server.routes
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def _get_comfyui_directory() -> Path:
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"""Get the ComfyUI directory."""
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return Path(folder_paths.base_path)
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def _get_node_pack_directory() -> Path:
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"""Get the RTX Remix node pack directory."""
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return Path(__file__).parent.parent
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def _get_user_directory() -> Path:
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"""Get the RTX Remix user directory."""
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user_dir = Path(folder_paths.get_user_directory())
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return user_dir / REMIX_USER_ID
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def _get_workflow_directories() -> dict[PathType, dict[SourceType, Path]]:
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"""
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Initialize and return workflow directories for all sources.
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Creates the directories if they don't exist (for user directories only).
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Returns:
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A nested dictionary: path_type -> source -> directory path
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"""
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# User directories
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user_dir = _get_user_directory()
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user_api_workflows_dir = user_dir / API_WORKFLOWS_DIR
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user_full_workflows_dir = user_dir / WORKFLOWS_DIR
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# Create user directories if they don't exist
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user_api_workflows_dir.mkdir(parents=True, exist_ok=True)
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user_full_workflows_dir.mkdir(parents=True, exist_ok=True)
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# RTX Remix node pack directories
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node_pack_dir = _get_node_pack_directory()
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remix_api_workflows_dir = node_pack_dir / API_WORKFLOWS_DIR
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remix_full_workflows_dir = node_pack_dir / WORKFLOWS_DIR
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# Node pack directories should already exist, but we can check
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remix_api_workflows_dir.mkdir(parents=True, exist_ok=True)
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remix_full_workflows_dir.mkdir(parents=True, exist_ok=True)
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# Structure: path_type -> source -> directory
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return {
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PathType.API: {
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SourceType.USER: user_api_workflows_dir,
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SourceType.RTX_REMIX: remix_api_workflows_dir,
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},
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PathType.FULL: {
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SourceType.USER: user_full_workflows_dir,
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SourceType.RTX_REMIX: remix_full_workflows_dir,
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},
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}
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def _success_response(data: dict[str, Any], status: int = 200) -> web.Response:
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"""
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Create a standardized success JSON response.
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Args:
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data: Data dictionary to include in the response
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status: HTTP status code, defaults to 200
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Returns:
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JSON success response with success=True and the provided data
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"""
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return web.json_response({"success": True, **data}, status=status)
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def _error_response(message: str, status: int = 400) -> web.Response:
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"""
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Create a standardized error JSON response.
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Args:
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message: Error message to include in the response
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status: HTTP status code, defaults to 400
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Returns:
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JSON error response with success=False and the error message
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"""
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return web.json_response({"success": False, "message": message}, status=status)
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def _load_workflow_file(file_path: Path) -> dict[str, Any]:
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"""
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Load workflow data from a JSON file.
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Args:
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file_path: Path to the workflow JSON file
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Returns:
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Dictionary containing the workflow data
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Raises:
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IOError: If the file cannot be read
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json.JSONDecodeError: If the file contains invalid JSON
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"""
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with open(file_path, "r", encoding="utf-8") as f:
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return json.load(f)
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def _save_workflow_file(file_path: Path, workflow_data: dict[str, Any]):
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"""
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Save workflow data to a JSON file.
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Args:
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file_path: Path where the workflow file should be saved
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workflow_data: Dictionary containing the workflow data to save
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Raises:
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IOError: If the file cannot be written
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"""
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with open(file_path, "w", encoding="utf-8") as f:
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json.dump(workflow_data, f, indent=2)
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@routes.get(f"{get_base_url()}/{WORKFLOWS_PREFIX}")
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async def list_workflows(_request: web.Request) -> web.Response:
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"""
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List all workflows from both user and rtx-remix node pack directories.
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Returns:
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JSON response containing workflows organized by path type first,
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then by source (user vs rtx-remix)
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"""
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# Initialize structure: path_type -> source -> list of workflows
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workflows = {
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PathType.API.value: {
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SourceType.USER.value: [],
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SourceType.RTX_REMIX.value: [],
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},
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PathType.FULL.value: {
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SourceType.USER.value: [],
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SourceType.RTX_REMIX.value: [],
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},
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}
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# Get all workflow directories (path_type -> source -> directory)
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all_directories = _get_workflow_directories()
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# Iterate through path types and sources
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for path_type, source_dirs in all_directories.items():
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for source, directory in source_dirs.items():
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if not directory.exists():
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continue
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for file_path in sorted(directory.glob("*.json")):
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try:
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stat = file_path.stat()
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relative_path = file_path.relative_to(_get_comfyui_directory())
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workflows[path_type.value][source.value].append(
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{
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"name": file_path.stem,
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"path": relative_path.as_posix(),
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"size": stat.st_size,
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"modified": stat.st_mtime,
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}
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)
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except (OSError, IOError):
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# Skip files that can't be accessed
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continue
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return _success_response({"workflows": workflows})
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@routes.get(f"{get_base_url()}/{WORKFLOWS_PREFIX}/{{path_type}}/{{source_type}}/{{workflow_name}}")
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async def get_workflow(request: web.Request) -> web.Response:
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"""
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Get specific workflow contents from either user or rtx-remix source.
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Also handles HEAD requests to check if a workflow exists (for overwrite confirmation).
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Args:
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request: The HTTP request object
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Path Parameters:
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source_type: The type of source ("user" or "rtx-remix").
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workflow_name: The name of the workflow to get
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path_type: Type of workflow path ("api" or "full").
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Returns:
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JSON response containing workflow data organized by path type
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first, then by source (or just status code for HEAD requests)
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"""
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source_type = request.match_info.get("source_type")
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workflow_name = request.match_info.get("workflow_name")
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path_type = request.match_info.get("path_type")
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if not source_type or not source_type.strip():
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return _error_response("Source type is required", status=400)
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try:
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source_type = SourceType(source_type.strip().lower())
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except ValueError:
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return _error_response(
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f"Invalid source type: {source_type}. "
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f"Valid source types are: {', '.join([source.value for source in SourceType])}",
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status=400,
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)
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if not workflow_name or not workflow_name.strip():
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return _error_response("Workflow name is required", status=400)
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if path_type and path_type.strip():
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try:
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path_type = PathType(path_type.strip())
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except ValueError:
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return _error_response(
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f"Invalid path type: {path_type}. "
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f"Valid path types are: {', '.join([path_type.value for path_type in PathType])}",
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status=400,
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)
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# Remove extension if provided
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if workflow_name.lower().endswith(".json"):
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workflow_name = workflow_name[:-5]
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all_directories = _get_workflow_directories()
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workflow_directory = all_directories[path_type][source_type]
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file_path = Path((workflow_directory / workflow_name).as_posix() + ".json")
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# Handle HEAD requests efficiently - just check existence without reading file
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if request.method == "HEAD":
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if file_path.exists():
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return web.Response(status=200)
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return web.Response(status=404)
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response_data = None
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if file_path.exists():
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try:
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workflow_data = _load_workflow_file(file_path)
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relative_path = file_path.relative_to(_get_comfyui_directory())
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response_data = {
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"name": workflow_name,
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"path": relative_path.as_posix(),
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"data": workflow_data,
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}
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except (IOError, json.JSONDecodeError) as e:
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return _error_response(f"Error reading workflow: {str(e)}", status=500)
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if not response_data:
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return _error_response(f"Workflow not found: {workflow_name} in {workflow_directory}", status=404)
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return _success_response(response_data)
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@routes.post(f"{get_base_url()}/{WORKFLOWS_PREFIX}/save")
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async def save_workflow(request: web.Request) -> web.Response:
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"""
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Save both API workflow and full workflow to the user directory.
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Note: Workflows can only be saved to the user directory, not to the
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rtx-remix node pack.
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Request body:
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name: Name of the workflow to save
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workflows: Dictionary containing the workflow data for each path type
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Returns:
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JSON response containing the saved workflow name and filepaths
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"""
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try:
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data = await request.json()
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except json.JSONDecodeError:
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return _error_response("Invalid JSON in request body", status=400)
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workflow_name = data.get("name", "").strip()
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workflows = data.get("workflows", {})
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if not workflow_name:
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return _error_response("Workflow name is required", status=400)
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# Remove extension if provided
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if workflow_name.lower().endswith(".json"):
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workflow_name = workflow_name[:-5]
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# Get all workflow directories (path_type -> source -> directory)
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all_directories = _get_workflow_directories()
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try:
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response_data = {}
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for path_type, workflow_data in workflows.items():
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try:
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path_type = PathType(path_type)
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except ValueError:
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return _error_response(f"Invalid path type: {path_type}", status=400)
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# Always save to user directory
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if path_type not in all_directories:
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return _error_response(
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f"Invalid path type: {path_type}. "
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f"Valid path types are: {', '.join([path_type.value for path_type in all_directories.keys()])}",
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status=400,
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)
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user_workflow_dir = all_directories[path_type][SourceType.USER]
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file_path = Path((user_workflow_dir / workflow_name).as_posix() + ".json")
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_save_workflow_file(file_path, workflow_data)
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relative_path = file_path.relative_to(_get_comfyui_directory())
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response_data.setdefault(path_type.value, {}).setdefault(SourceType.USER.value, {})["path"] = (
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relative_path.as_posix()
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)
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return _success_response(
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{
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"message": "Workflow saved successfully",
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"name": workflow_name,
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"workflows": response_data,
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}
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)
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except IOError as e:
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return _error_response(f"Error saving workflow: {str(e)}", status=500)
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