444 lines
16 KiB
Python
444 lines
16 KiB
Python
from ast import List
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import json
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import logging
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from typing import Any, Dict
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import aiohttp
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from workflow_service.comfy.comfy_server import ComfyUIServerInfo
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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API_INPUT_PREFIX = "INPUT_"
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API_OUTPUT_PREFIX = "OUTPUT_"
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async def build_prompt(
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workflow_data: dict,
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api_spec: dict[str, dict[str, Any]],
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request_data: dict[str, Any],
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server: ComfyUIServerInfo,
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):
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"""
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构建prompt
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"""
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patched_workflow = await _patch_workflow(
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workflow_data, api_spec, request_data, server
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)
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prompt = _convert_workflow_to_prompt_api_format(patched_workflow)
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return prompt
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def parse_api_spec(workflow_data: dict) -> Dict[str, Dict[str, Any]]:
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"""
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解析工作流，并根据规范生成嵌套结构的API参数名。
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结构: {'节点名': {'node_id': '节点ID', '字段名': {字段信息}}}
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"""
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spec = {"inputs": {}, "outputs": {}}
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if "nodes" not in workflow_data or not isinstance(workflow_data["nodes"], list):
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raise ValueError(
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"Invalid workflow format: 'nodes' key not found or is not a list."
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)
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nodes_map = {str(node["id"]): node for node in workflow_data["nodes"]}
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for node_id, node in nodes_map.items():
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title: str = node.get("title")
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if not title:
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continue
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if title.startswith(API_INPUT_PREFIX):
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# 提取节点名（去掉API_INPUT_PREFIX前缀）
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node_name = title[len(API_INPUT_PREFIX) :].lower()
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# 如果节点名不在inputs中，创建新的节点条目
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if node_name not in spec["inputs"]:
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spec["inputs"][node_name] = {
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"node_id": node_id,
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"class_type": node.get("type"),
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}
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if "inputs" in node:
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for a_input in node.get("inputs", []):
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if a_input.get("link") is None and "widget" in a_input:
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widget_name = a_input["widget"]["name"].lower()
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# 特殊处理：隐藏LoadImage节点的upload字段
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if node.get("type") == "LoadImage" and widget_name == "upload":
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continue
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# 确保inputs字段存在
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if "inputs" not in spec["inputs"][node_name]:
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spec["inputs"][node_name]["inputs"] = {}
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# 直接使用widget_name作为字段名
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spec["inputs"][node_name]["inputs"][widget_name] = {
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"type": _get_param_type(a_input.get("type", "STRING")),
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"widget_name": a_input["widget"]["name"],
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}
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elif title.startswith(API_OUTPUT_PREFIX):
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# 提取节点名（去掉API_OUTPUT_PREFIX前缀）
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node_name = title[len(API_OUTPUT_PREFIX) :].lower()
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# 如果节点名不在outputs中，创建新的节点条目
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if node_name not in spec["outputs"]:
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spec["outputs"][node_name] = {
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"node_id": node_id,
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"class_type": node.get("type"),
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}
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if "outputs" in node:
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for an_output in node.get("outputs", []):
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output_name = an_output["name"].lower()
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# 确保outputs字段存在
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if "outputs" not in spec["outputs"][node_name]:
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spec["outputs"][node_name]["outputs"] = {}
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# 直接使用output_name作为字段名
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spec["outputs"][node_name]["outputs"][output_name] = {
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"output_name": an_output["name"],
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}
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return spec
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def parse_inputs_json_schema(workflow_data: dict) -> dict:
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"""
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解析工作流，生成符合 JSON Schema 标准的 API 规范。
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返回一个只包含输入参数的 JSON Schema 对象。
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"""
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# 基础 JSON Schema 结构，只包含输入
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schema = {
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"$schema": "http://json-schema.org/draft-07/schema#",
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"type": "object",
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"title": "ComfyUI Workflow Input Schema",
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"description": "工作流输入参数定义",
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"properties": {},
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"required": [],
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}
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if "nodes" not in workflow_data or not isinstance(workflow_data["nodes"], list):
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raise ValueError(
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"Invalid workflow format: 'nodes' key not found or is not a list."
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)
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nodes_map = {str(node["id"]): node for node in workflow_data["nodes"]}
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# 收集所有输入节点
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input_nodes = {}
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for node_id, node in nodes_map.items():
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title: str = node.get("title")
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if not title:
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continue
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if title.startswith(API_INPUT_PREFIX):
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# 提取节点名（去掉API_INPUT_PREFIX前缀）
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node_name = title[len(API_INPUT_PREFIX) :].lower()
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if node_name not in input_nodes:
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input_nodes[node_name] = {
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"node_id": node_id,
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"class_type": node.get("type"),
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"properties": {},
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"required": [],
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}
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if "inputs" in node:
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for a_input in node.get("inputs", []):
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if a_input.get("link") is None and "widget" in a_input:
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widget_name = a_input["widget"]["name"].lower()
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# 特殊处理：隐藏LoadImage节点的upload字段
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if node.get("type") == "LoadImage" and widget_name == "upload":
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continue
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# 生成字段的 JSON Schema 定义
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field_schema = _generate_field_schema(a_input)
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input_nodes[node_name]["properties"][widget_name] = field_schema
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# 如果字段是必需的，添加到required列表
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if a_input.get("required", True): # 默认所有字段都是必需的
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input_nodes[node_name]["required"].append(widget_name)
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# 将收集的节点信息转换为 JSON Schema 格式
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for node_name, node_info in input_nodes.items():
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schema["properties"][node_name] = {
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"type": "object",
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"title": f"输入节点: {node_name}",
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"description": f"节点类型: {node_info['class_type']}",
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"properties": node_info["properties"],
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"required": node_info["required"] if node_info["required"] else [],
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"additionalProperties": False,
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}
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# 如果节点有必需字段，将整个节点标记为必需
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if node_info["required"]:
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schema["required"].append(node_name)
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return schema
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########################################################
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# 以下是内部函数
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########################################################
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async def _patch_workflow(
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workflow_data: dict,
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api_spec: dict[str, dict[str, Any]],
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request_data: dict[str, Any],
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server: ComfyUIServerInfo,
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) -> dict:
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"""
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将request_data中的参数值，patch到workflow_data中。并返回修改后的workflow_data。
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request_data结构: {"节点名称": {"字段名称": "字段值"}}
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"""
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if "nodes" not in workflow_data:
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raise ValueError("无效的工作流格式")
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nodes_map = {str(node["id"]): node for node in workflow_data["nodes"]}
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for node_name, node_fields in request_data.items():
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if node_name not in api_spec["inputs"]:
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continue
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node_spec = api_spec["inputs"][node_name]
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node_id = node_spec["node_id"]
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if node_id not in nodes_map:
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continue
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target_node = nodes_map[node_id]
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# 处理该节点下的所有字段
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for field_name, value in node_fields.items():
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if "inputs" not in node_spec or field_name not in node_spec["inputs"]:
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continue
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field_spec = node_spec["inputs"][field_name]
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widget_name_to_patch = field_spec["widget_name"]
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# 找到所有属于widget的输入，并确定目标widget的索引
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widget_inputs = [
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inp for inp in target_node.get("inputs", []) if "widget" in inp
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]
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target_widget_index = -1
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for i, widget_input in enumerate(widget_inputs):
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# "widget" 字典可能不存在或没有 "name" 键
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if widget_input.get("widget", {}).get("name") == widget_name_to_patch:
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target_widget_index = i
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break
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if target_widget_index == -1:
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logger.warning(
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f"在节点 {node_id} 中未找到名为 '{widget_name_to_patch}' 的 widget。跳过此参数。"
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)
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continue
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# 确保 `widgets_values` 存在且为列表
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if "widgets_values" not in target_node or not isinstance(
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target_node.get("widgets_values"), list
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):
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# 如果不存在或格式错误，根据widget数量创建一个占位符列表
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target_node["widgets_values"] = [None] * len(widget_inputs)
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# 确保 `widgets_values` 列表足够长
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while len(target_node["widgets_values"]) <= target_widget_index:
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target_node["widgets_values"].append(None)
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# 根据API规范转换数据类型
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target_type = str
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if field_spec["type"] == "int":
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target_type = int
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elif field_spec["type"] == "float":
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target_type = float
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# 在正确的位置上更新值
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try:
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if target_node.get("type") == "LoadImage":
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value = await _upload_image_to_comfy(value, server)
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target_node["widgets_values"][target_widget_index] = target_type(value)
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except (ValueError, TypeError) as e:
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logger.warning(
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f"无法将节点 '{node_name}' 的字段 '{field_name}' 的值 '{value}' 转换为类型 '{field_spec['type']}'。错误: {e}"
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)
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continue
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workflow_data["nodes"] = list(nodes_map.values())
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# 对workflow_data中的nodes进行排序，按照id从小到大
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workflow_data["nodes"] = sorted(workflow_data["nodes"], key=lambda x: x["id"])
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return workflow_data
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def _convert_workflow_to_prompt_api_format(workflow_data: dict) -> dict:
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"""
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将工作流（API格式）转换为提交到/prompt端点的格式。
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此函数现在能正确处理已通过 `patch_workflow` 修改的 `widgets_values`。
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"""
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if "nodes" not in workflow_data:
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raise ValueError("无效的工作流格式")
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prompt_api_format = {}
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# 建立从link_id到源节点的映射
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link_map = {}
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for link_data in workflow_data.get("links", []):
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(
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link_id,
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origin_node_id,
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origin_slot_index,
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target_node_id,
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target_slot_index,
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link_type,
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) = link_data
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# 键是目标节点的输入link_id
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link_map[link_id] = [str(origin_node_id), origin_slot_index]
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for node in workflow_data["nodes"]:
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node_id = str(node["id"])
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inputs_dict = {}
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# 1. 处理控件输入 (widgets)
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widgets_values = node.get("widgets_values", [])
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widget_cursor = 0
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for input_config in node.get("inputs", []):
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# 如果是widget并且有对应的widgets_values
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if "widget" in input_config and widget_cursor < len(widgets_values):
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widget_name = input_config["widget"].get("name")
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if widget_name:
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# 使用widgets_values中的值，因为这里已经包含了API传入的修改
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inputs_dict[widget_name] = widgets_values[widget_cursor]
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widget_cursor += 1
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# 特殊处理：如果节点是 EG_CYQ_JB ，则需要忽略widgets_values的第1个值，这个是用来控制control net的，它不参与赋值
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if node["type"] == "EG_CYQ_JB" and widget_cursor == 1:
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widget_cursor += 1
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# 2. 处理连接输入 (links)
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for input_config in node.get("inputs", []):
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if "link" in input_config and input_config["link"] is not None:
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link_id = input_config["link"]
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if link_id in link_map:
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# 输入名称是input_config中的'name'
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inputs_dict[input_config["name"]] = link_map[link_id]
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prompt_api_format[node_id] = {
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"inputs": inputs_dict,
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"class_type": node["type"],
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"_meta": {
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"title": node.get("title", ""),
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},
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}
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# 过滤掉类型为 Note 的节点
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prompt_api_format = {
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k: v for k, v in prompt_api_format.items() if v["class_type"] not in ["Note"]
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}
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return prompt_api_format
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async def _upload_image_to_comfy(file_path: str, server: ComfyUIServerInfo) -> str:
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"""
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上传文件到服务器。
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file 是一个http链接
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返回一个名称
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"""
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file_name = file_path.split("/")[-1]
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file_data = await _download_file(file_path)
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form_data = aiohttp.FormData()
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form_data.add_field("image", file_data, filename=file_name, content_type="image/*")
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form_data.add_field("type", "input")
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async with aiohttp.ClientSession() as session:
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async with session.post(
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f"{server.http_url}/api/upload/image", data=form_data
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) as response:
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response.raise_for_status()
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result = await response.json()
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return result["name"]
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async def _download_file(src: str) -> bytes:
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"""
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下载文件到本地。
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"""
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async with aiohttp.ClientSession() as session:
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async with session.get(src) as response:
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response.raise_for_status()
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return await response.read()
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def _generate_field_schema(input_field: dict) -> dict:
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"""
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根据输入字段信息生成 JSON Schema 字段定义
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"""
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field_schema = {
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"title": input_field["widget"]["name"],
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"description": input_field.get("description", ""),
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}
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# 根据字段类型设置 schema 类型
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field_type = _get_param_type(input_field.get("type", "STRING"))
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if field_type == "int":
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field_schema.update(
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{
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"type": "integer",
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"minimum": input_field.get("min", None),
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"maximum": input_field.get("max", None),
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}
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)
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elif field_type == "float":
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field_schema.update(
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{
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"type": "number",
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"minimum": input_field.get("min", None),
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"maximum": input_field.get("max", None),
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}
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)
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elif field_type == "UploadFile":
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field_schema.update(
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{"type": "string", "format": "binary", "description": "上传文件"}
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)
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else: # string
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field_schema.update({"type": "string"})
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# 处理枚举值
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if "options" in input_field:
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field_schema["enum"] = input_field["options"]
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field_schema[
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"description"
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] += f" 可选值: {', '.join(input_field['options'])}"
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# 设置默认值
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if "default" in input_field:
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field_schema["default"] = input_field["default"]
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return field_schema
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def _get_param_type(input_type_str: str) -> str:
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"""
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根据输入类型字符串确定参数类型
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"""
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input_type_str = input_type_str.upper()
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if "COMBO" in input_type_str:
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return "UploadFile"
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elif "INT" in input_type_str:
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return "int"
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elif "FLOAT" in input_type_str:
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return "float"
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else:
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return "string"
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