mirror of
https://github.com/willmiao/ComfyUI-Lora-Manager.git
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cf898da193
Introduce an agent skill framework for LLM-driven metadata enrichment: - AgentCLI (py/agent_cli/): in-process wrappers around internal services using standard relative imports, eliminating the need for sys.path hacks - LLMService: centralized BYOK (bring-your-own-key) LLM client supporting OpenAI, Ollama, and custom OpenAI-compatible endpoints - PostProcessor: deterministic engine that applies LLM output via AgentCLI (replaces old handler.py + _BASE_MODEL_ALIASES approach) - SkillRegistry: filesystem-based skill discovery (skill.yaml + prompt.md) - AgentService: orchestrates skill execution with WebSocket progress - Frontend AgentManager: WebSocket listeners, skill execution, config UI - Context menu entries (single + bulk) for "Enrich Metadata (Agent)" - Settings UI for AI Provider configuration (BYOK) - Full i18n support across 9 locales Bug fixes found during review: - aiohttp.web.json_response: status_code= -> status= - settings_modal cancelEditApiKey: wrong argument position - AgentManager.isLlmConfigured: allow Ollama without API key - PostProcessor._merge_tags: lowercase all tags to match TagUpdateService
414 lines
14 KiB
Python
414 lines
14 KiB
Python
"""Agent orchestration service.
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The :class:`AgentService` coordinates skill execution:
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1. Look up the skill in :class:`SkillRegistry`
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2. Validate input against the skill's ``input_schema``
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3. Prepare context via :mod:`~py.agent_cli` (read metadata, list base models, fetch HF README)
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4. If ``llm_required``: call :class:`LLMService` with the rendered prompt
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5. Post-process via :class:`PostProcessor` (delegates I/O to :mod:`~py.agent_cli`)
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6. Broadcast progress and completion via :class:`WebSocketManager`
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Skills define *what* to do (prompt template). The AgentService handles *how*
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(LLM calls, context gathering, validation, progress).
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"""
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from __future__ import annotations
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import asyncio
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import json
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import logging
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import re
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from dataclasses import dataclass, field
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from typing import Any, Dict, List, Optional
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import aiohttp
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from ..llm_service import LLMService
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from ..websocket_manager import ws_manager
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from .post_processor import PostProcessor
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from .skill_registry import SkillRegistry
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logger = logging.getLogger(__name__)
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class AgentProgressReporter:
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"""Protocol-compatible progress reporter backed by WebSocket broadcast."""
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async def on_progress(self, payload: Dict[str, Any]) -> None:
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await ws_manager.broadcast(payload)
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@dataclass
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class SkillResult:
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"""Outcome of a skill execution."""
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success: bool
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updated_models: List[Dict[str, Any]] = field(default_factory=list)
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errors: List[str] = field(default_factory=list)
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summary: str = ""
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def _validate_schema(data: Any, schema: Dict[str, Any], path: str = "") -> List[str]:
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"""Minimal JSON schema validator.
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Supports a subset of JSON Schema: ``type``, ``properties``, ``required``,
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``items``, ``enum``. Returns a list of error messages (empty = valid).
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"""
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errors: List[str] = []
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if not schema:
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return errors
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expected_type = schema.get("type")
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if expected_type:
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type_map = {
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"string": str,
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"number": (int, float),
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"integer": int,
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"boolean": bool,
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"array": list,
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"object": dict,
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"null": type(None),
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}
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expected_py = type_map.get(expected_type)
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if expected_py is not None and not isinstance(data, expected_py):
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errors.append(f"{path or 'root'}: expected {expected_type}, got {type(data).__name__}")
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return errors
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if expected_type == "object" and isinstance(data, dict):
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properties = schema.get("properties", {})
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required = schema.get("required", [])
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for req_key in required:
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if req_key not in data:
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errors.append(f"{path or 'root'}: missing required property '{req_key}'")
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for key, value in data.items():
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if key in properties:
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errors.extend(_validate_schema(value, properties[key], f"{path}.{key}"))
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if expected_type == "array" and isinstance(data, list):
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items_schema = schema.get("items")
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if items_schema:
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for i, item in enumerate(data):
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errors.extend(_validate_schema(item, items_schema, f"{path}[{i}]"))
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if "enum" in schema and data not in schema["enum"]:
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errors.append(f"{path or 'root'}: value '{data}' not in enum {schema['enum']}")
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return errors
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# ------------------------------------------------------------------
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# Prompt template rendering
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# ------------------------------------------------------------------
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def _render_prompt(template: str, variables: Dict[str, Any]) -> str:
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"""Render a prompt template with ``{{variable}}`` placeholders.
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Uses simple regex substitution — no Jinja2 dependency needed.
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"""
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def replace(match: re.Match) -> str:
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key = match.group(1).strip()
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value = variables.get(key, "")
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if isinstance(value, (dict, list)):
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return json.dumps(value, ensure_ascii=False, indent=2)
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return str(value)
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return re.sub(r"\{\{(\w+)\}\}", replace, template)
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class AgentService:
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"""Orchestrate agent skill execution.
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Usage::
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service = await AgentService.get_instance()
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result = await service.execute_skill(
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skill_name="enrich_hf_metadata",
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input_data={"model_paths": ["/path/to/model.safetensors"]},
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progress_callback=AgentProgressReporter(),
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)
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"""
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_instance: Optional["AgentService"] = None
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_lock: asyncio.Lock = asyncio.Lock()
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def __init__(
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self,
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*,
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skill_registry: Optional[SkillRegistry] = None,
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llm_service: Optional[LLMService] = None,
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) -> None:
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self._registry = skill_registry
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self._llm_service = llm_service
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@classmethod
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async def get_instance(cls) -> "AgentService":
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"""Return the lazily-initialised global ``AgentService``."""
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if cls._instance is None:
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async with cls._lock:
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if cls._instance is None:
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cls._instance = cls(
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skill_registry=await SkillRegistry.get_instance(),
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llm_service=await LLMService.get_instance(),
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)
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return cls._instance
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@classmethod
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def reset_instance(cls) -> None:
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"""Reset the cached singleton — primarily for tests."""
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cls._instance = None
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async def _ensure_registry(self) -> SkillRegistry:
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if self._registry is None:
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self._registry = await SkillRegistry.get_instance()
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return self._registry
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async def _ensure_llm(self) -> LLMService:
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if self._llm_service is None:
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self._llm_service = await LLMService.get_instance()
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return self._llm_service
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async def list_skills(self) -> List[Dict[str, Any]]:
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"""Return a JSON-serialisable list of available skills."""
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registry = await self._ensure_registry()
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return [
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{
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"name": s.name,
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"title": s.title,
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"description": s.description,
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"llm_required": s.llm_required,
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"model_type_filter": s.model_type_filter,
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}
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for s in registry.list_skills()
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]
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async def execute_skill(
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self,
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*,
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skill_name: str,
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input_data: Dict[str, Any],
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progress_callback: Optional[AgentProgressReporter] = None,
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) -> SkillResult:
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"""Execute an agent skill.
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Args:
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skill_name: Name of the skill to execute
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input_data: Input validated against the skill's ``input_schema``
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progress_callback: Optional WebSocket progress reporter
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Returns:
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:class:`SkillResult` with success status and updated model info
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"""
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registry = await self._ensure_registry()
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logger.info("execute_skill '%s': looking up skill", skill_name)
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skill = registry.get_skill(skill_name)
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if skill is None:
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return SkillResult(
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success=False,
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errors=[f"Skill not found: {skill_name}"],
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summary=f"Skill '{skill_name}' does not exist",
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)
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input_errors = _validate_schema(input_data, skill.input_schema)
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if input_errors:
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return SkillResult(
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success=False,
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errors=input_errors,
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summary=f"Invalid input: {'; '.join(input_errors)}",
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)
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model_paths = input_data.get("model_paths", [])
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if not model_paths:
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return SkillResult(
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success=False,
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errors=["No model_paths provided"],
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summary="No models to process",
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)
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total = len(model_paths)
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processed = 0
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success_count = 0
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updated_models: List[Dict[str, Any]] = []
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errors: List[str] = []
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post_processor = PostProcessor()
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logger.info("execute_skill '%s': starting with %d model(s)", skill_name, total)
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await self._emit_progress(
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progress_callback, skill_name, status="started",
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total=total, processed=0, success=0,
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)
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llm = await self._ensure_llm()
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llm_configured = llm.is_configured() if skill.llm_required else True
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for model_path in model_paths:
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logger.info(
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"execute_skill '%s': processing model %d/%d: %s",
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skill_name, processed + 1, total, model_path,
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)
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try:
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from ...agent_cli import read_metadata
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metadata = await read_metadata(model_path)
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prompt_vars: Dict[str, Any] = {"model_path": model_path}
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if skill.llm_required and llm_configured:
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prompt_vars = await self._build_prompt_context(
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skill_name, model_path, metadata, registry, llm,
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)
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llm_response: Optional[Dict[str, Any]] = None
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if skill.llm_required and llm_configured:
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prompt_template = registry.load_prompt(skill_name)
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rendered = _render_prompt(prompt_template, prompt_vars)
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logger.info(
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"execute_skill '%s': LLM call for %s (prompt=%d chars)",
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skill_name, model_path, len(rendered),
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)
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llm_response = await llm.chat_completion_json(
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system_prompt=prompt_vars.get(
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"system_prompt",
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"You are a helpful assistant that extracts structured metadata.",
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),
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user_prompt=rendered,
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)
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model_result = await post_processor.process(
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skill_name=skill_name,
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model_path=model_path,
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llm_output=llm_response or {},
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metadata=metadata,
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)
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if model_result.get("success", True):
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success_count += 1
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uf = model_result.get("updated_fields", [])
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if uf:
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updated_models.append({"path": model_path, "updated_fields": uf})
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else:
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errors.extend(
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model_result.get("errors", [model_result.get("error", "Unknown error")])
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)
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except Exception as exc:
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logger.error("Skill %s failed for %s: %s", skill_name, model_path, exc)
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errors.append(f"{model_path}: {exc}")
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processed += 1
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await self._emit_progress(
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progress_callback, skill_name, status="processing",
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total=total, processed=processed, success=success_count,
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current_path=model_path,
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)
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result = SkillResult(
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success=success_count > 0,
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updated_models=updated_models,
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errors=errors,
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summary=f"Processed {processed}/{total} models, {success_count} succeeded",
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)
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logger.info("execute_skill '%s': done — %s", skill_name, result.summary)
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await self._emit_progress(
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progress_callback, skill_name, status="completed",
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total=total, processed=processed, success=success_count,
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updated_models=updated_models, errors=errors, summary=result.summary,
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)
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return result
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async def _build_prompt_context(
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self,
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skill_name: str,
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model_path: str,
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metadata: Dict[str, Any],
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registry: SkillRegistry,
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llm: Any,
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) -> Dict[str, Any]:
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"""Gather variables for the skill's prompt template.
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Reads metadata, fetches the HF README (if applicable), lists available
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base models, and returns a dict that maps to ``{{variable}}``
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placeholders in ``prompt.md``.
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"""
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from ...agent_cli import list_base_models
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context: Dict[str, Any] = {
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"model_path": model_path,
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"hf_url": "",
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"repo": "",
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"readme_content": "",
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"current_metadata": {},
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"base_models": [],
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}
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context["current_metadata"] = {
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"file_name": metadata.get("file_name", ""),
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"base_model": metadata.get("base_model", ""),
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"tags": metadata.get("tags", []),
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"modelDescription": metadata.get("modelDescription", ""),
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"trainedWords": metadata.get("trainedWords", []),
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"sha256": (metadata.get("sha256") or "")[:16] + "..." if metadata.get("sha256") else "",
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"size": metadata.get("size", 0),
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}
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hf_url = metadata.get("hf_url", "")
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context["hf_url"] = hf_url
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repo = self._extract_repo_from_url(hf_url) if hf_url else ""
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context["repo"] = repo or ""
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if repo:
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readme = await self._fetch_readme(repo)
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context["readme_content"] = readme[:8000] if readme else "(README not available)"
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try:
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context["base_models"] = await list_base_models()
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except Exception as exc:
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logger.debug("Failed to list base models: %s", exc)
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return context
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@staticmethod
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def _extract_repo_from_url(hf_url: str) -> Optional[str]:
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"""Extract ``user/repo`` from a HuggingFace URL."""
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if not hf_url:
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return None
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m = re.match(r"https?://huggingface\.co/([^/]+/[^/]+)", hf_url)
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return m.group(1) if m else None
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@staticmethod
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async def _fetch_readme(repo: str) -> str:
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"""Fetch README.md from HuggingFace (tries ``main``, then ``master``)."""
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async with aiohttp.ClientSession(
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headers={"User-Agent": "ComfyUI-LoRA-Manager/1.0"},
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timeout=aiohttp.ClientTimeout(total=30),
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) as session:
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for branch in ("main", "master"):
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url = f"https://huggingface.co/{repo}/raw/{branch}/README.md"
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try:
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async with session.get(url) as resp:
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if resp.status == 200:
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return await resp.text()
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except Exception as exc:
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logger.debug("Failed to fetch README from %s: %s", url, exc)
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return ""
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async def _emit_progress(
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self,
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callback: Optional[AgentProgressReporter],
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skill_name: str,
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*,
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status: str,
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**extra: Any,
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) -> None:
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"""Send a progress update via WebSocket (if callback is set)."""
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payload: Dict[str, Any] = {"type": "agent_progress", "skill": skill_name, "status": status}
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payload.update(extra)
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if callback is not None:
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await callback.on_progress(payload)
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