729 lines
25 KiB
Python
729 lines
25 KiB
Python
"""
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图谱相关API路由
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采用项目上下文机制，服务端持久化状态
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"""
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import os
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import traceback
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import threading
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from flask import request, jsonify
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from . import graph_bp
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from ..config import Config
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from ..services.ontology_generator import OntologyGenerator
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from ..services.graph_builder import GraphBuilderService
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from ..services.text_processor import TextProcessor
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from ..utils.file_parser import FileParser
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from ..utils.logger import get_logger
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from ..utils.locale import t, get_locale, set_locale
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from ..models.task import TaskManager, TaskStatus
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from ..models.project import ProjectManager, ProjectStatus
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from ..services.cached_replays import get_cached_graph, get_cached_project
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# 获取日志器
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logger = get_logger('foresight.api')
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def allowed_file(filename: str) -> bool:
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"""检查文件扩展名是否允许"""
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if not filename or '.' not in filename:
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return False
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ext = os.path.splitext(filename)[1].lower().lstrip('.')
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return ext in Config.ALLOWED_EXTENSIONS
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def _prepare_graph_for_visualization(graph_data: dict) -> dict:
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"""Keep graph visualization dense and readable by showing the top connected nodes."""
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if not isinstance(graph_data, dict):
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return graph_data
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if graph_data.get("fallback_source") == "cached_demo_graph":
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return graph_data
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nodes = graph_data.get("nodes") or []
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edges = graph_data.get("edges") or []
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max_nodes = max(1, Config.GRAPH_VISUAL_MAX_NODES)
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if len(nodes) <= max_nodes:
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return graph_data
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degree = {n.get("uuid"): 0 for n in nodes}
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for edge in edges:
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src = edge.get("source_node_uuid")
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tgt = edge.get("target_node_uuid")
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if src in degree:
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degree[src] += 1
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if tgt in degree:
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degree[tgt] += 1
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def node_score(node):
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labels = node.get("labels") or []
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type_bonus = 1 if any(label not in ("Entity", "Node", "__Entity__") for label in labels) else 0
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return (degree.get(node.get("uuid"), 0), type_bonus, node.get("name") or "")
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selected_nodes = sorted(nodes, key=node_score, reverse=True)[:max_nodes]
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selected_ids = {n.get("uuid") for n in selected_nodes}
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selected_edges = [
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edge for edge in edges
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if edge.get("source_node_uuid") in selected_ids and edge.get("target_node_uuid") in selected_ids
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]
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result = dict(graph_data)
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result["raw_node_count"] = graph_data.get("node_count", len(nodes))
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result["raw_edge_count"] = graph_data.get("edge_count", len(edges))
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result["nodes"] = selected_nodes
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result["edges"] = selected_edges
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result["node_count"] = len(selected_nodes)
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result["edge_count"] = len(selected_edges)
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result["visualization_limited"] = True
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result["visualization_max_nodes"] = max_nodes
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return result
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# ============== 项目管理接口 ==============
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@graph_bp.route('/project/<project_id>', methods=['GET'])
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def get_project(project_id: str):
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"""
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获取项目详情
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"""
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cached = get_cached_project(project_id)
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if cached:
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return jsonify({
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"success": True,
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"data": cached
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})
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project = ProjectManager.get_project(project_id)
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if not project:
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return jsonify({
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"success": False,
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"error": t('api.projectNotFound', id=project_id)
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}), 404
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return jsonify({
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"success": True,
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"data": project.to_dict()
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})
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@graph_bp.route('/project/list', methods=['GET'])
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def list_projects():
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"""
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列出所有项目
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"""
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limit = request.args.get('limit', 50, type=int)
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projects = ProjectManager.list_projects(limit=limit)
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return jsonify({
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"success": True,
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"data": [p.to_dict() for p in projects],
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"count": len(projects)
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})
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@graph_bp.route('/project/<project_id>', methods=['DELETE'])
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def delete_project(project_id: str):
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"""
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删除项目
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"""
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success = ProjectManager.delete_project(project_id)
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if not success:
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return jsonify({
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"success": False,
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"error": t('api.projectDeleteFailed', id=project_id)
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}), 404
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return jsonify({
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"success": True,
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"message": t('api.projectDeleted', id=project_id)
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})
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@graph_bp.route('/project/<project_id>/reset', methods=['POST'])
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def reset_project(project_id: str):
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"""
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重置项目状态（用于重新构建图谱）
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"""
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project = ProjectManager.get_project(project_id)
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if not project:
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return jsonify({
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"success": False,
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"error": t('api.projectNotFound', id=project_id)
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}), 404
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# 重置到本体已生成状态
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if project.ontology:
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project.status = ProjectStatus.ONTOLOGY_GENERATED
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else:
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project.status = ProjectStatus.CREATED
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project.graph_id = None
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project.graph_build_task_id = None
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project.error = None
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ProjectManager.save_project(project)
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return jsonify({
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"success": True,
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"message": t('api.projectReset', id=project_id),
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"data": project.to_dict()
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})
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# ============== 接口1：上传文件并生成本体 ==============
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@graph_bp.route('/ontology/generate', methods=['POST'])
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def generate_ontology():
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"""
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接口1：上传文件，分析生成本体定义
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请求方式：multipart/form-data
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参数：
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files: 上传的文件（PDF/MD/TXT），可多个
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simulation_requirement: 模拟需求描述（必填）
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project_name: 项目名称（可选）
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additional_context: 额外说明（可选）
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返回：
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{
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"success": true,
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"data": {
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"project_id": "proj_xxxx",
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"ontology": {
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"entity_types": [...],
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"edge_types": [...],
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"analysis_summary": "..."
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},
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"files": [...],
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"total_text_length": 12345
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}
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}
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"""
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try:
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logger.info("=== 开始生成本体定义 ===")
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# 获取参数
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simulation_requirement = request.form.get('simulation_requirement', '')
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project_name = request.form.get('project_name', 'Unnamed Project')
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additional_context = request.form.get('additional_context', '')
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# token 追踪：标记当前 stage
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from ..utils import token_tracker
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token_tracker.set_stage("step1_ontology")
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logger.debug(f"项目名称: {project_name}")
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logger.debug(f"模拟需求: {simulation_requirement[:100]}...")
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if not simulation_requirement:
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return jsonify({
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"success": False,
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"error": t('api.requireSimulationRequirement')
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}), 400
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# 获取上传的文件
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uploaded_files = request.files.getlist('files')
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if not uploaded_files or all(not f.filename for f in uploaded_files):
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return jsonify({
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"success": False,
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"error": t('api.requireFileUpload')
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}), 400
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# 创建项目
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project = ProjectManager.create_project(name=project_name)
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project.simulation_requirement = simulation_requirement
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logger.info(f"创建项目: {project.project_id}")
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# 保存文件并提取文本
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document_texts = []
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all_text = ""
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for file in uploaded_files:
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if file and file.filename and allowed_file(file.filename):
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# 保存文件到项目目录
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file_info = ProjectManager.save_file_to_project(
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project.project_id,
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file,
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file.filename
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)
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project.files.append({
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"filename": file_info["original_filename"],
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"size": file_info["size"]
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})
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# 提取文本
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text = FileParser.extract_text(file_info["path"])
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text = TextProcessor.preprocess_text(text)
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document_texts.append(text)
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all_text += f"\n\n=== {file_info['original_filename']} ===\n{text}"
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if not document_texts:
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ProjectManager.delete_project(project.project_id)
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return jsonify({
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"success": False,
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"error": t('api.noDocProcessed')
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}), 400
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# 保存提取的文本
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project.total_text_length = len(all_text)
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ProjectManager.save_extracted_text(project.project_id, all_text)
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logger.info(f"文本提取完成，共 {len(all_text)} 字符")
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# 生成本体
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logger.info("调用 LLM 生成本体定义...")
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generator = OntologyGenerator()
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ontology = generator.generate(
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document_texts=document_texts,
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simulation_requirement=simulation_requirement,
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additional_context=additional_context if additional_context else None
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)
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# 保存本体到项目
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entity_count = len(ontology.get("entity_types", []))
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edge_count = len(ontology.get("edge_types", []))
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logger.info(f"本体生成完成: {entity_count} 个实体类型, {edge_count} 个关系类型")
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project.ontology = {
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"entity_types": ontology.get("entity_types", []),
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"edge_types": ontology.get("edge_types", [])
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}
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project.analysis_summary = ontology.get("analysis_summary", "")
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project.status = ProjectStatus.ONTOLOGY_GENERATED
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ProjectManager.save_project(project)
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logger.info(f"=== 本体生成完成 === 项目ID: {project.project_id}")
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return jsonify({
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"success": True,
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"data": {
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"project_id": project.project_id,
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"project_name": project.name,
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"ontology": project.ontology,
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"analysis_summary": project.analysis_summary,
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"files": project.files,
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"total_text_length": project.total_text_length
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}
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})
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except Exception as e:
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# 区分 429 限流和其他错误
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err_str = str(e)
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is_rate_limit = any(kw in err_str.lower() for kw in ['429', 'rate limit', '速率限制', '1302', 'too many'])
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status_code = 429 if is_rate_limit else 500
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logger.error(f"本体生成失败: {type(e).__name__}: {err_str[:300]}")
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return jsonify({
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"success": False,
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"error": "LLM 限流，请等待 1-2 分钟后重试" if is_rate_limit else str(e),
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"error_type": "rate_limit" if is_rate_limit else "server_error",
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"traceback": traceback.format_exc()
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}), status_code
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# ============== 接口2：构建图谱 ==============
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@graph_bp.route('/build', methods=['POST'])
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def build_graph():
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"""
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接口2：根据project_id构建图谱
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请求（JSON）：
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{
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"project_id": "proj_xxxx", // 必填，来自接口1
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"graph_name": "图谱名称", // 可选
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"chunk_size": 500, // 可选，默认500
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"chunk_overlap": 50 // 可选，默认50
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}
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返回：
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{
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"success": true,
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"data": {
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"project_id": "proj_xxxx",
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"task_id": "task_xxxx",
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"message": "图谱构建任务已启动"
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}
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}
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"""
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try:
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logger.info("=== 开始构建图谱 ===")
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# token 追踪：标记当前 stage
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from ..utils import token_tracker
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token_tracker.set_stage("step2_graph_build")
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# 检查配置
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errors = []
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if not Config.ZEP_API_KEY:
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errors.append(t('api.zepApiKeyMissing'))
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if errors:
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logger.error(f"配置错误: {errors}")
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return jsonify({
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"success": False,
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"error": t('api.configError', details="; ".join(errors))
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}), 500
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# 解析请求
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data = request.get_json() or {}
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project_id = data.get('project_id')
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logger.debug(f"请求参数: project_id={project_id}")
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if not project_id:
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return jsonify({
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"success": False,
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"error": t('api.requireProjectId')
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}), 400
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# 获取项目
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project = ProjectManager.get_project(project_id)
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if not project:
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return jsonify({
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"success": False,
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"error": t('api.projectNotFound', id=project_id)
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}), 404
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# 检查项目状态
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force = data.get('force', False) # 强制重新构建
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if project.status == ProjectStatus.CREATED:
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return jsonify({
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"success": False,
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"error": t('api.ontologyNotGenerated')
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}), 400
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if project.status == ProjectStatus.GRAPH_BUILDING and not force:
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return jsonify({
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"success": False,
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"error": t('api.graphBuilding'),
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"task_id": project.graph_build_task_id
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}), 400
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# 如果强制重建，重置状态
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if force and project.status in [ProjectStatus.GRAPH_BUILDING, ProjectStatus.FAILED, ProjectStatus.GRAPH_COMPLETED]:
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project.status = ProjectStatus.ONTOLOGY_GENERATED
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project.graph_id = None
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project.graph_build_task_id = None
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project.error = None
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# 获取配置
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graph_name = data.get('graph_name', project.name or 'Foresight Graph')
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chunk_size = data.get('chunk_size', project.chunk_size or Config.DEFAULT_CHUNK_SIZE)
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chunk_size = min(chunk_size, 250) # clamp: Qwen 32B max_seq_len=32768, keep prompt within window
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chunk_overlap = data.get('chunk_overlap', project.chunk_overlap or Config.DEFAULT_CHUNK_OVERLAP)
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# 更新项目配置
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project.chunk_size = chunk_size
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project.chunk_overlap = chunk_overlap
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# 获取提取的文本
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text = ProjectManager.get_extracted_text(project_id)
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if not text:
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return jsonify({
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"success": False,
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"error": t('api.textNotFound')
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}), 400
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# 获取本体
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ontology = project.ontology
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if not ontology:
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return jsonify({
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"success": False,
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"error": t('api.ontologyNotFound')
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}), 400
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# 创建异步任务
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task_manager = TaskManager()
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task_id = task_manager.create_task(f"构建图谱: {graph_name}")
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logger.info(f"创建图谱构建任务: task_id={task_id}, project_id={project_id}")
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# 更新项目状态
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project.status = ProjectStatus.GRAPH_BUILDING
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project.graph_build_task_id = task_id
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ProjectManager.save_project(project)
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# Capture locale before spawning background thread
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current_locale = get_locale()
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# 启动后台任务
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def build_task():
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set_locale(current_locale)
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build_logger = get_logger('foresight.build')
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try:
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build_logger.info(f"[{task_id}] 开始构建图谱...")
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task_manager.update_task(
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task_id,
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status=TaskStatus.PROCESSING,
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message=t('progress.initGraphService')
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)
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# 创建图谱构建服务
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builder = GraphBuilderService(api_key=Config.ZEP_API_KEY)
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# 分块
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task_manager.update_task(
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task_id,
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message=t('progress.textChunking'),
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progress=5
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)
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chunks = TextProcessor.split_text(
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text,
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chunk_size=chunk_size,
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overlap=chunk_overlap
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)
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total_chunks = len(chunks)
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# 创建图谱
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task_manager.update_task(
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task_id,
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message=t('progress.creatingZepGraph'),
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progress=10
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)
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graph_id = builder.create_graph(name=graph_name)
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# 更新项目的graph_id
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project.graph_id = graph_id
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ProjectManager.save_project(project)
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# 设置本体
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task_manager.update_task(
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task_id,
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message=t('progress.settingOntology'),
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progress=15
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)
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builder.set_ontology(graph_id, ontology)
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# 添加文本（progress_callback 签名是 (msg, progress_ratio)）
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def add_progress_callback(msg, progress_ratio):
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progress = 15 + int(progress_ratio * 75) # 15% - 90%
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task_manager.update_task(
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task_id,
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message=msg,
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progress=progress
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)
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task_manager.update_task(
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task_id,
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message=t('progress.addingChunks', count=total_chunks),
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progress=15
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)
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# v0.3.2: 用 CustomGraphBuilder 替代 Graphiti add_episodes_batch
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# 避免 Graphiti+GLM 兼容性问题（20015 parameter invalid / 上下文爆窗口 / 嵌套 dict 等）
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from ..services.custom_graph_builder import CustomGraphBuilder
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def custom_progress_cb(current, total, msg):
|
||
prog = current / total if total else 0
|
||
progress = 15 + int(prog * 75) # 15% - 90%
|
||
task_manager.update_task(
|
||
task_id,
|
||
message=msg,
|
||
progress=progress
|
||
)
|
||
|
||
cgb = CustomGraphBuilder(graph_id=graph_id, ontology=ontology)
|
||
try:
|
||
build_stats = cgb.build(
|
||
full_text=text,
|
||
chunk_size=chunk_size,
|
||
chunk_overlap=chunk_overlap,
|
||
progress_callback=custom_progress_cb,
|
||
)
|
||
build_logger.info(
|
||
f"[{task_id}] CustomGraphBuilder 完成: "
|
||
f"entities={build_stats.get('entities_count')}, "
|
||
f"edges={build_stats.get('edges_count')}, "
|
||
f"snapshot_nodes={build_stats.get('snapshot_node_count')}, "
|
||
f"snapshot_edges={build_stats.get('snapshot_edge_count')}, "
|
||
f"chunks={build_stats.get('chunks_processed')}/{build_stats.get('total_chunks')}, "
|
||
f"failed={build_stats.get('chunks_failed')}"
|
||
)
|
||
finally:
|
||
cgb.close()
|
||
episode_uuids = [] # 兼容后续变量引用
|
||
|
||
# 获取图谱数据
|
||
task_manager.update_task(
|
||
task_id,
|
||
message=t('progress.fetchingGraphData'),
|
||
progress=95
|
||
)
|
||
snapshot_graph_data = build_stats.get("graph_data") or {}
|
||
ProjectManager.save_graph_snapshot(project_id, snapshot_graph_data)
|
||
try:
|
||
graph_data = builder.get_graph_data(graph_id)
|
||
ProjectManager.save_graph_snapshot(project_id, graph_data)
|
||
except Exception as e:
|
||
build_logger.warning(
|
||
f"[{task_id}] Neo4j 图谱读取失败，使用本地 snapshot: "
|
||
f"{type(e).__name__}: {str(e)[:200]}"
|
||
)
|
||
graph_data = snapshot_graph_data
|
||
|
||
# 更新项目状态
|
||
project.status = ProjectStatus.GRAPH_COMPLETED
|
||
ProjectManager.save_project(project)
|
||
|
||
node_count = graph_data.get("node_count", 0)
|
||
edge_count = graph_data.get("edge_count", 0)
|
||
build_logger.info(f"[{task_id}] 图谱构建完成: graph_id={graph_id}, 节点={node_count}, 边={edge_count}")
|
||
|
||
# 完成
|
||
task_manager.update_task(
|
||
task_id,
|
||
status=TaskStatus.COMPLETED,
|
||
message=t('progress.graphBuildComplete'),
|
||
progress=100,
|
||
result={
|
||
"project_id": project_id,
|
||
"graph_id": graph_id,
|
||
"node_count": node_count,
|
||
"edge_count": edge_count,
|
||
"chunk_count": total_chunks
|
||
}
|
||
)
|
||
|
||
except Exception as e:
|
||
# 更新项目状态为失败
|
||
build_logger.error(f"[{task_id}] 图谱构建失败: {str(e)}")
|
||
build_logger.debug(traceback.format_exc())
|
||
|
||
project.status = ProjectStatus.FAILED
|
||
project.error = str(e)
|
||
ProjectManager.save_project(project)
|
||
|
||
task_manager.update_task(
|
||
task_id,
|
||
status=TaskStatus.FAILED,
|
||
message=t('progress.buildFailed', error=str(e)),
|
||
error=traceback.format_exc()
|
||
)
|
||
|
||
# 启动后台线程
|
||
thread = threading.Thread(target=build_task, daemon=True)
|
||
thread.start()
|
||
|
||
return jsonify({
|
||
"success": True,
|
||
"data": {
|
||
"project_id": project_id,
|
||
"task_id": task_id,
|
||
"message": t('api.graphBuildStarted', taskId=task_id)
|
||
}
|
||
})
|
||
|
||
except Exception as e:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": str(e),
|
||
"traceback": traceback.format_exc()
|
||
}), 500
|
||
|
||
|
||
# ============== 任务查询接口 ==============
|
||
|
||
@graph_bp.route('/task/<task_id>', methods=['GET'])
|
||
def get_task(task_id: str):
|
||
"""
|
||
查询任务状态
|
||
"""
|
||
task = TaskManager().get_task(task_id)
|
||
|
||
if not task:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": t('api.taskNotFound', id=task_id)
|
||
}), 404
|
||
|
||
return jsonify({
|
||
"success": True,
|
||
"data": task.to_dict()
|
||
})
|
||
|
||
|
||
@graph_bp.route('/tasks', methods=['GET'])
|
||
def list_tasks():
|
||
"""
|
||
列出所有任务
|
||
"""
|
||
tasks = TaskManager().list_tasks()
|
||
|
||
return jsonify({
|
||
"success": True,
|
||
"data": [t.to_dict() for t in tasks],
|
||
"count": len(tasks)
|
||
})
|
||
|
||
|
||
# ============== 图谱数据接口 ==============
|
||
|
||
@graph_bp.route('/data/<graph_id>', methods=['GET'])
|
||
def get_graph_data(graph_id: str):
|
||
"""
|
||
获取图谱数据（节点和边）
|
||
"""
|
||
try:
|
||
cached = get_cached_graph(graph_id)
|
||
if cached:
|
||
return jsonify({
|
||
"success": True,
|
||
"data": _prepare_graph_for_visualization(cached)
|
||
})
|
||
|
||
if not Config.ZEP_API_KEY:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": t('api.zepApiKeyMissing')
|
||
}), 500
|
||
|
||
builder = GraphBuilderService(api_key=Config.ZEP_API_KEY)
|
||
try:
|
||
graph_data = builder.get_graph_data(graph_id)
|
||
except Exception as e:
|
||
project = ProjectManager.get_project_by_graph_id(graph_id)
|
||
graph_data = ProjectManager.get_graph_snapshot(project.project_id) if project else None
|
||
if not graph_data:
|
||
raise
|
||
graph_data["fallback_source"] = "local_graph_snapshot"
|
||
graph_data["fallback_reason"] = f"{type(e).__name__}: {str(e)[:200]}"
|
||
|
||
graph_data = _prepare_graph_for_visualization(graph_data)
|
||
|
||
return jsonify({
|
||
"success": True,
|
||
"data": graph_data
|
||
})
|
||
|
||
except Exception as e:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": str(e),
|
||
"traceback": traceback.format_exc()
|
||
}), 500
|
||
|
||
|
||
@graph_bp.route('/delete/<graph_id>', methods=['DELETE'])
|
||
def delete_graph(graph_id: str):
|
||
"""
|
||
删除Zep图谱
|
||
"""
|
||
try:
|
||
if not Config.ZEP_API_KEY:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": t('api.zepApiKeyMissing')
|
||
}), 500
|
||
|
||
builder = GraphBuilderService(api_key=Config.ZEP_API_KEY)
|
||
builder.delete_graph(graph_id)
|
||
|
||
return jsonify({
|
||
"success": True,
|
||
"message": t('api.graphDeleted', id=graph_id)
|
||
})
|
||
|
||
except Exception as e:
|
||
return jsonify({
|
||
"success": False,
|
||
"error": str(e),
|
||
"traceback": traceback.format_exc()
|
||
}), 500
|