mirror of
https://github.com/1Panel-dev/MaxKB.git
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320 lines
13 KiB
Python
320 lines
13 KiB
Python
import io
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import zipfile
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from enum import Enum
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import uuid_utils.compat as uuid
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from django.contrib.postgres.search import SearchVectorField
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from django.db import models
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from django.db.models import QuerySet
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from django.db.models.signals import pre_delete
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from django.dispatch import receiver
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from mptt.fields import TreeForeignKey
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from mptt.models import MPTTModel
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from common.db.sql_execute import select_one
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from common.mixins.app_model_mixin import AppModelMixin
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from common.utils.common import get_sha256_hash
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from models_provider.models import Model
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from users.models import User
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class KnowledgeType(models.IntegerChoices):
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BASE = 0, '通用类型'
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WEB = 1, 'web站点类型'
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LARK = 2, '飞书类型'
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YUQUE = 3, '语雀类型'
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class TaskType(Enum):
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# 向量
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EMBEDDING = 1
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# 生成问题
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GENERATE_PROBLEM = 2
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# 同步
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SYNC = 3
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class State(Enum):
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# 等待
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PENDING = '0'
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# 执行中
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STARTED = '1'
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# 成功
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SUCCESS = '2'
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# 失败
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FAILURE = '3'
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# 取消任务
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REVOKE = '4'
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# 取消成功
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REVOKED = '5'
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# 忽略
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IGNORED = 'n'
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class KnowledgeScope(models.TextChoices):
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SHARED = "SHARED", '共享'
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WORKSPACE = "WORKSPACE", "工作空间可用"
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class HitHandlingMethod(models.TextChoices):
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optimization = 'optimization', '模型优化'
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directly_return = 'directly_return', '直接返回'
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class Status:
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type_cls = TaskType
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state_cls = State
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def __init__(self, status: str = None):
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self.task_status = {}
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status_list = list(status[::-1] if status is not None else '')
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for _type in self.type_cls:
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index = _type.value - 1
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_state = self.state_cls(status_list[index] if len(status_list) > index else 'n')
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self.task_status[_type] = _state
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@staticmethod
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def of(status: str):
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return Status(status)
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def __str__(self):
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result = []
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for _type in sorted(self.type_cls, key=lambda item: item.value, reverse=True):
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result.insert(len(self.type_cls) - _type.value, self.task_status[_type].value)
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return ''.join(result)
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def __setitem__(self, key, value):
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self.task_status[key] = value
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def __getitem__(self, item):
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return self.task_status[item]
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def update_status(self, task_type: TaskType, state: State):
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self.task_status[task_type] = state
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def default_status_meta():
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return {"state_time": {}}
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class KnowledgeFolder(MPTTModel, AppModelMixin):
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id = models.CharField(primary_key=True, max_length=64, editable=False, verbose_name="主键id")
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name = models.CharField(max_length=64, verbose_name="文件夹名称", db_index=True)
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desc = models.CharField(max_length=200, null=True, blank=True, verbose_name="描述")
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user = models.ForeignKey(User, on_delete=models.SET_NULL, db_constraint=False, blank=True, null=True)
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workspace_id = models.CharField(max_length=64, verbose_name="工作空间id", default="default", db_index=True)
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parent = TreeForeignKey('self', on_delete=models.DO_NOTHING, null=True, blank=True, related_name='children')
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class Meta:
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db_table = "knowledge_folder"
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class MPTTMeta:
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order_insertion_by = ['name']
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class Knowledge(AppModelMixin):
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"""
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知识库表
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"""
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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name = models.CharField(max_length=150, verbose_name="知识库名称", db_index=True)
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workspace_id = models.CharField(max_length=64, verbose_name="工作空间id", default="default", db_index=True)
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desc = models.CharField(max_length=256, verbose_name="描述")
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user = models.ForeignKey(User, on_delete=models.SET_NULL, db_constraint=False, blank=True, null=True)
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type = models.IntegerField(verbose_name='类型', choices=KnowledgeType.choices, default=KnowledgeType.BASE,
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db_index=True)
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scope = models.CharField(max_length=20, verbose_name='可用范围', choices=KnowledgeScope.choices,
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default=KnowledgeScope.WORKSPACE, db_index=True)
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folder = models.ForeignKey(KnowledgeFolder, on_delete=models.DO_NOTHING, verbose_name="文件夹id", default='default')
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embedding_model = models.ForeignKey(Model, on_delete=models.SET_NULL, db_constraint=False, blank=True, null=True)
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file_size_limit = models.IntegerField(verbose_name="文件大小限制", default=100)
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file_count_limit = models.IntegerField(verbose_name="文件数量限制", default=50)
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meta = models.JSONField(verbose_name="元数据", default=dict)
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class Meta:
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db_table = "knowledge"
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def get_default_status():
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return Status('').__str__()
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class Document(AppModelMixin):
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"""
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文档表
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"""
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING, verbose_name="知识库id")
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name = models.CharField(max_length=150, verbose_name="文档名称", db_index=True)
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char_length = models.IntegerField(verbose_name="文档字符数 冗余字段")
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status = models.CharField(verbose_name='状态', max_length=20, default=get_default_status, db_index=True)
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status_meta = models.JSONField(verbose_name="状态统计数据", default=default_status_meta)
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is_active = models.BooleanField(default=True, db_index=True)
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type = models.IntegerField(verbose_name='类型', choices=KnowledgeType.choices, default=KnowledgeType.BASE,
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db_index=True)
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hit_handling_method = models.CharField(verbose_name='命中处理方式', max_length=20,
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choices=HitHandlingMethod.choices,
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default=HitHandlingMethod.optimization)
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directly_return_similarity = models.FloatField(verbose_name='直接回答相似度', default=0.9)
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meta = models.JSONField(verbose_name="元数据", default=dict)
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class Meta:
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db_table = "document"
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class Paragraph(AppModelMixin):
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"""
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段落表
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"""
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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document = models.ForeignKey(Document, on_delete=models.DO_NOTHING, db_constraint=False)
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knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING)
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content = models.CharField(max_length=102400, verbose_name="段落内容")
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title = models.CharField(max_length=256, verbose_name="标题", default="", db_index=True)
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status = models.CharField(verbose_name='状态', max_length=20, default=get_default_status, db_index=True)
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status_meta = models.JSONField(verbose_name="状态数据", default=default_status_meta)
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hit_num = models.IntegerField(verbose_name="命中次数", default=0)
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is_active = models.BooleanField(default=True, db_index=True)
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position = models.IntegerField(verbose_name="段落顺序", default=0, db_index=True)
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class Meta:
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db_table = "paragraph"
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class Problem(AppModelMixin):
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"""
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问题表
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"""
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING, db_constraint=False)
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content = models.CharField(max_length=256, verbose_name="问题内容", db_index=True)
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hit_num = models.IntegerField(verbose_name="命中次数", default=0)
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class Meta:
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db_table = "problem"
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class ProblemParagraphMapping(AppModelMixin):
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING, db_constraint=False)
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document = models.ForeignKey(Document, on_delete=models.DO_NOTHING, db_constraint=False)
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problem = models.ForeignKey(Problem, on_delete=models.DO_NOTHING, db_constraint=False)
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paragraph = models.ForeignKey(Paragraph, on_delete=models.DO_NOTHING, db_constraint=False)
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class Meta:
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db_table = "problem_paragraph_mapping"
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class SourceType(models.IntegerChoices):
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"""订单类型"""
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PROBLEM = 0, '问题'
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PARAGRAPH = 1, '段落'
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TITLE = 2, '标题'
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class SearchMode(models.TextChoices):
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embedding = 'embedding'
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keywords = 'keywords'
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blend = 'blend'
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class FileSourceType(models.TextChoices):
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# 知识库 跟随知识库被删除而被删除 source_id 为知识库id
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KNOWLEDGE = "KNOWLEDGE"
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# 应用 跟随应用被删除而被删除 source_id 为应用id
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APPLICATION = "APPLICATION"
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# 工具 跟随工具被删除而被删除 source_id 为应用id
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TOOL = "TOOL"
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# 文档
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DOCUMENT = "DOCUMENT"
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# 对话
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CHAT = "CHAT"
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SYSTEM = "SYSTEM"
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# 临时30分钟 数据30分钟后被清理 source_id 为TEMPORARY_30_MINUTE
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TEMPORARY_30_MINUTE = "TEMPORARY_30_MINUTE"
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# 临时120分钟 数据120分钟后被清理 source_id为TEMPORARY_100_MINUTE
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TEMPORARY_120_MINUTE = "TEMPORARY_120_MINUTE"
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# 临时1天 数据1天后被清理 source_id为TEMPORARY_1_DAY
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TEMPORARY_1_DAY = "TEMPORARY_1_DAY"
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class VectorField(models.Field):
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def db_type(self, connection):
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return 'vector'
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class Embedding(models.Model):
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id = models.CharField(max_length=128, primary_key=True, verbose_name="主键id")
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source_id = models.CharField(max_length=128, verbose_name="资源id", db_index=True)
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source_type = models.CharField(verbose_name='资源类型', max_length=5, choices=SourceType.choices,
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default=SourceType.PROBLEM, db_index=True)
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is_active = models.BooleanField(verbose_name="是否可用", max_length=1, default=True)
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knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING, verbose_name="文档关联", db_constraint=False)
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document = models.ForeignKey(Document, on_delete=models.DO_NOTHING, verbose_name="文档关联", db_constraint=False)
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paragraph = models.ForeignKey(Paragraph, on_delete=models.DO_NOTHING, verbose_name="段落关联", db_constraint=False)
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embedding = VectorField(verbose_name="向量")
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search_vector = SearchVectorField(verbose_name="分词", default="")
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meta = models.JSONField(verbose_name="元数据", default=dict)
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class Meta:
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db_table = "embedding"
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class File(AppModelMixin):
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id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
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file_name = models.CharField(max_length=256, verbose_name="文件名称", default="")
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file_size = models.IntegerField(verbose_name="文件大小", default=0)
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sha256_hash = models.CharField(verbose_name="文件sha256_hash标识", default="")
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source_type = models.CharField(verbose_name="资源类型", choices=FileSourceType,
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default=FileSourceType.TEMPORARY_120_MINUTE.value, db_index=True)
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source_id = models.CharField(verbose_name="资源id", default=FileSourceType.TEMPORARY_120_MINUTE.value,
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db_index=True)
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loid = models.IntegerField(verbose_name="loid")
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meta = models.JSONField(verbose_name="文件关联数据", default=dict)
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class Meta:
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db_table = "file"
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def save(self, bytea=None, force_insert=False, force_update=False, using=None, update_fields=None):
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sha256_hash = get_sha256_hash(bytea)
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# 创建压缩文件
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zip_buffer = io.BytesIO()
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with zipfile.ZipFile(zip_buffer, 'w', zipfile.ZIP_DEFLATED) as zip_file:
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# 设置压缩级别为最高(9)
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zipinfo = zipfile.ZipInfo(self.file_name)
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zipinfo.compress_type = zipfile.ZIP_DEFLATED
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zip_file.writestr(zipinfo, bytea, compresslevel=9)
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# 获取压缩后的数据
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compressed_data = zip_buffer.getvalue()
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f = QuerySet(File).filter(sha256_hash=sha256_hash).first()
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if f is not None:
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self.loid = f.loid
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else:
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result = select_one("SELECT lo_from_bytea(%s, %s::bytea) as loid", [0, bytea])
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self.loid = result['loid']
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self.file_size = len(compressed_data)
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self.sha256_hash = sha256_hash
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# 可以在元数据中记录原始大小
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if 'original_size' not in self.meta:
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self.meta['original_size'] = len(bytea)
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super().save()
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def get_bytes(self):
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result = select_one(f'SELECT lo_get({self.loid}) as "data"', [])
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compressed_data = result['data']
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try:
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# 解压数据
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with zipfile.ZipFile(io.BytesIO(compressed_data)) as zip_file:
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return zip_file.read(self.file_name)
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except Exception as e:
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# 如果数据不是zip格式，直接返回原始数据
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return compressed_data
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@receiver(pre_delete, sender=File)
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def on_delete_file(sender, instance, **kwargs):
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exist = QuerySet(File).filter(loid=instance.loid).exclude(id=instance.id).exists()
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if not exist:
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select_one(f'SELECT lo_unlink({instance.loid})', [])
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