dify/api/models/tools.py

import json
from enum import Enum
from typing import List

from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy import ForeignKey

from extensions.ext_database import db

from core.tools.entities.tool_bundle import ApiBasedToolBundle
from core.tools.entities.common_entities import I18nObject
from core.tools.entities.tool_entities import ApiProviderSchemaType, ToolRuntimeVariablePool

from models.model import Tenant, Account, App

class BuiltinToolProvider(db.Model):
    """
    This table stores the tool provider information for built-in tools for each tenant.
    """
    __tablename__ = 'tool_builtin_providers'
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='tool_builtin_provider_pkey'),
        # one tenant can only have one tool provider with the same name
        db.UniqueConstraint('tenant_id', 'provider', name='unique_builtin_tool_provider')
    )

    # id of the tool provider
    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # id of the tenant
    tenant_id = db.Column(UUID, nullable=True)
    # who created this tool provider
    user_id = db.Column(UUID, nullable=False)
    # name of the tool provider
    provider = db.Column(db.String(40), nullable=False)
    # credential of the tool provider
    encrypted_credentials = db.Column(db.Text, nullable=True)
    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))

    @property
    def credentials(self) -> dict:
        return json.loads(self.encrypted_credentials)

class PublishedAppTool(db.Model):
    """
    The table stores the apps published as a tool for each person.
    """
    __tablename__ = 'tool_published_apps'
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='published_app_tool_pkey'),
        db.UniqueConstraint('app_id', 'user_id', name='unique_published_app_tool')
    )

    # id of the tool provider
    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # id of the app
    app_id = db.Column(UUID, ForeignKey('apps.id'), nullable=False)
    # who published this tool
    user_id = db.Column(UUID, nullable=False)
    # description of the tool, stored in i18n format, for human
    description = db.Column(db.Text, nullable=False)
    # llm_description of the tool, for LLM
    llm_description = db.Column(db.Text, nullable=False)
    # query decription, query will be seem as a parameter of the tool, to describe this parameter to llm, we need this field
    query_description = db.Column(db.Text, nullable=False)
    # query name, the name of the query parameter
    query_name = db.Column(db.String(40), nullable=False)
    # name of the tool provider
    tool_name = db.Column(db.String(40), nullable=False)
    # author
    author = db.Column(db.String(40), nullable=False)
    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))

    @property
    def description_i18n(self) -> I18nObject:
        return I18nObject(**json.loads(self.description))
    
    @property
    def app(self) -> App:
        return db.session.query(App).filter(App.id == self.app_id).first()

class ApiToolProvider(db.Model):
    """
    The table stores the api providers.
    """
    __tablename__ = 'tool_api_providers'
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='tool_api_provider_pkey'),
        db.UniqueConstraint('name', 'tenant_id', name='unique_api_tool_provider')
    )

    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # name of the api provider
    name = db.Column(db.String(40), nullable=False)
    # icon
    icon = db.Column(db.String(255), nullable=False)
    # original schema
    schema = db.Column(db.Text, nullable=False)
    schema_type_str = db.Column(db.String(40), nullable=False)
    # who created this tool
    user_id = db.Column(UUID, nullable=False)
    # tanent id
    tenant_id = db.Column(UUID, nullable=False)
    # description of the provider
    description = db.Column(db.Text, nullable=False)
    # json format tools
    tools_str = db.Column(db.Text, nullable=False)
    # json format credentials
    credentials_str = db.Column(db.Text, nullable=False)
    # privacy policy
    privacy_policy = db.Column(db.String(255), nullable=True)

    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))

    @property
    def schema_type(self) -> ApiProviderSchemaType:
        return ApiProviderSchemaType.value_of(self.schema_type_str)
    
    @property
    def tools(self) -> List[ApiBasedToolBundle]:
        return [ApiBasedToolBundle(**tool) for tool in json.loads(self.tools_str)]
    
    @property
    def credentials(self) -> dict:
        return json.loads(self.credentials_str)
    
    @property
    def is_taned(self) -> bool:
        return self.tenant_id is not None
    
    @property
    def user(self) -> Account:
        return db.session.query(Account).filter(Account.id == self.user_id).first()

    @property
    def tanent(self) -> Tenant:
        return db.session.query(Tenant).filter(Tenant.id == self.tenant_id).first()
    
class ToolModelInvoke(db.Model):
    """
    store the invoke logs from tool invoke
    """
    __tablename__ = "tool_model_invokes"
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='tool_model_invoke_pkey'),
    )

    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # who invoke this tool
    user_id = db.Column(UUID, nullable=False)
    # tanent id
    tenant_id = db.Column(UUID, nullable=False)
    # provider
    provider = db.Column(db.String(40), nullable=False)
    # type
    tool_type = db.Column(db.String(40), nullable=False)
    # tool name
    tool_name = db.Column(db.String(40), nullable=False)
    # invoke parameters
    model_parameters = db.Column(db.Text, nullable=False)
    # prompt messages
    prompt_messages = db.Column(db.Text, nullable=False)
    # invoke response
    model_response = db.Column(db.Text, nullable=False)

    prompt_tokens = db.Column(db.Integer, nullable=False, server_default=db.text('0'))
    answer_tokens = db.Column(db.Integer, nullable=False, server_default=db.text('0'))
    answer_unit_price = db.Column(db.Numeric(10, 4), nullable=False)
    answer_price_unit = db.Column(db.Numeric(10, 7), nullable=False, server_default=db.text('0.001'))
    provider_response_latency = db.Column(db.Float, nullable=False, server_default=db.text('0'))
    total_price = db.Column(db.Numeric(10, 7))
    currency = db.Column(db.String(255), nullable=False)
    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))

class ToolConversationVariables(db.Model):
    """
    store the conversation variables from tool invoke
    """
    __tablename__ = "tool_conversation_variables"
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='tool_conversation_variables_pkey'),
        # add index for user_id and conversation_id
        db.Index('user_id_idx', 'user_id'),
        db.Index('conversation_id_idx', 'conversation_id'),
    )

    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # conversation user id
    user_id = db.Column(UUID, nullable=False)
    # tanent id
    tenant_id = db.Column(UUID, nullable=False)
    # conversation id
    conversation_id = db.Column(UUID, nullable=False)
    # variables pool
    variables_str = db.Column(db.Text, nullable=False)

    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))

    @property
    def variables(self) -> dict:
        return json.loads(self.variables_str)
    
class ToolFile(db.Model):
    """
    store the file created by agent
    """
    __tablename__ = "tool_files"
    __table_args__ = (
        db.PrimaryKeyConstraint('id', name='tool_file_pkey'),
        # add index for conversation_id
        db.Index('tool_file_conversation_id_idx', 'conversation_id'),
    )

    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
    # conversation user id
    user_id = db.Column(UUID, nullable=False)
    # tanent id
    tenant_id = db.Column(UUID, nullable=False)
    # conversation id
    conversation_id = db.Column(UUID, nullable=False)
    # file key
    file_key = db.Column(db.String(255), nullable=False)
    # mime type
    mimetype = db.Column(db.String(255), nullable=False)
    # original url
    original_url = db.Column(db.String(255), nullable=True)