dify/api/services/tools/api_tools_manage_service.py

import json
import logging

from httpx import get

from core.model_runtime.utils.encoders import jsonable_encoder
from core.tools.entities.api_entities import UserTool, UserToolProvider
from core.tools.entities.common_entities import I18nObject
from core.tools.entities.tool_bundle import ApiToolBundle
from core.tools.entities.tool_entities import (
    ApiProviderAuthType,
    ApiProviderSchemaType,
    ToolCredentialsOption,
    ToolProviderCredentials,
)
from core.tools.provider.api_tool_provider import ApiToolProviderController
from core.tools.tool_label_manager import ToolLabelManager
from core.tools.tool_manager import ToolManager
from core.tools.utils.configuration import ToolConfigurationManager
from core.tools.utils.parser import ApiBasedToolSchemaParser
from extensions.ext_database import db
from models.tools import ApiToolProvider
from services.tools.tools_transform_service import ToolTransformService

logger = logging.getLogger(__name__)


class ApiToolManageService:
    @staticmethod
    def parser_api_schema(schema: str) -> list[ApiToolBundle]:
        """
            parse api schema to tool bundle
        """
        try:
            warnings = {}
            try:
                tool_bundles, schema_type = ApiBasedToolSchemaParser.auto_parse_to_tool_bundle(schema, warning=warnings)
            except Exception as e:
                raise ValueError(f'invalid schema: {str(e)}')
            
            credentials_schema = [
                ToolProviderCredentials(
                    name='auth_type',
                    type=ToolProviderCredentials.CredentialsType.SELECT,
                    required=True,
                    default='none',
                    options=[
                        ToolCredentialsOption(value='none', label=I18nObject(
                            en_US='None',
                            zh_Hans='无'
                        )),
                        ToolCredentialsOption(value='api_key', label=I18nObject(
                            en_US='Api Key',
                            zh_Hans='Api Key'
                        )),
                    ],
                    placeholder=I18nObject(
                        en_US='Select auth type',
                        zh_Hans='选择认证方式'
                    )
                ),
                ToolProviderCredentials(
                    name='api_key_header',
                    type=ToolProviderCredentials.CredentialsType.TEXT_INPUT,
                    required=False,
                    placeholder=I18nObject(
                        en_US='Enter api key header',
                        zh_Hans='输入 api key header，如：X-API-KEY'
                    ),
                    default='api_key',
                    help=I18nObject(
                        en_US='HTTP header name for api key',
                        zh_Hans='HTTP 头部字段名，用于传递 api key'
                    )
                ),
                ToolProviderCredentials(
                    name='api_key_value',
                    type=ToolProviderCredentials.CredentialsType.TEXT_INPUT,
                    required=False,
                    placeholder=I18nObject(
                        en_US='Enter api key',
                        zh_Hans='输入 api key'
                    ),
                    default=''
                ),
            ]

            return jsonable_encoder({
                'schema_type': schema_type,
                'parameters_schema': tool_bundles,
                'credentials_schema': credentials_schema,
                'warning': warnings
            })
        except Exception as e:
            raise ValueError(f'invalid schema: {str(e)}')

    @staticmethod
    def convert_schema_to_tool_bundles(schema: str, extra_info: dict = None) -> list[ApiToolBundle]:
        """
            convert schema to tool bundles

            :return: the list of tool bundles, description
        """
        try:
            tool_bundles = ApiBasedToolSchemaParser.auto_parse_to_tool_bundle(schema, extra_info=extra_info)
            return tool_bundles
        except Exception as e:
            raise ValueError(f'invalid schema: {str(e)}')

    @staticmethod
    def create_api_tool_provider(
        user_id: str, tenant_id: str, provider_name: str, icon: dict, credentials: dict,
        schema_type: str, schema: str, privacy_policy: str, custom_disclaimer: str, labels: list[str]
    ):
        """
            create api tool provider
        """
        if schema_type not in [member.value for member in ApiProviderSchemaType]:
            raise ValueError(f'invalid schema type {schema}')
        
        # check if the provider exists
        provider: ApiToolProvider = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id,
            ApiToolProvider.name == provider_name,
        ).first()

        if provider is not None:
            raise ValueError(f'provider {provider_name} already exists')

        # parse openapi to tool bundle
        extra_info = {}
        # extra info like description will be set here
        tool_bundles, schema_type = ApiToolManageService.convert_schema_to_tool_bundles(schema, extra_info)
        
        if len(tool_bundles) > 100:
            raise ValueError('the number of apis should be less than 100')

        # create db provider
        db_provider = ApiToolProvider(
            tenant_id=tenant_id,
            user_id=user_id,
            name=provider_name,
            icon=json.dumps(icon),
            schema=schema,
            description=extra_info.get('description', ''),
            schema_type_str=schema_type,
            tools_str=json.dumps(jsonable_encoder(tool_bundles)),
            credentials_str={},
            privacy_policy=privacy_policy,
            custom_disclaimer=custom_disclaimer
        )

        if 'auth_type' not in credentials:
            raise ValueError('auth_type is required')

        # get auth type, none or api key
        auth_type = ApiProviderAuthType.value_of(credentials['auth_type'])

        # create provider entity
        provider_controller = ApiToolProviderController.from_db(db_provider, auth_type)
        # load tools into provider entity
        provider_controller.load_bundled_tools(tool_bundles)

        # encrypt credentials
        tool_configuration = ToolConfigurationManager(tenant_id=tenant_id, provider_controller=provider_controller)
        encrypted_credentials = tool_configuration.encrypt_tool_credentials(credentials)
        db_provider.credentials_str = json.dumps(encrypted_credentials)

        db.session.add(db_provider)
        db.session.commit()

        # update labels
        ToolLabelManager.update_tool_labels(provider_controller, labels)

        return { 'result': 'success' }
    
    @staticmethod
    def get_api_tool_provider_remote_schema(
        user_id: str, tenant_id: str, url: str
    ):
        """
            get api tool provider remote schema
        """
        headers = {
            "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0",
            "Accept": "*/*",
        }

        try:
            response = get(url, headers=headers, timeout=10)
            if response.status_code != 200:
                raise ValueError(f'Got status code {response.status_code}')
            schema = response.text

            # try to parse schema, avoid SSRF attack
            ApiToolManageService.parser_api_schema(schema)
        except Exception as e:
            logger.error(f"parse api schema error: {str(e)}")
            raise ValueError('invalid schema, please check the url you provided')
        
        return {
            'schema': schema
        }

    @staticmethod
    def list_api_tool_provider_tools(
        user_id: str, tenant_id: str, provider: str
    ) -> list[UserTool]:
        """
            list api tool provider tools
        """
        provider: ApiToolProvider = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id,
            ApiToolProvider.name == provider,
        ).first()

        if provider is None:
            raise ValueError(f'you have not added provider {provider}')
        
        controller = ToolTransformService.api_provider_to_controller(db_provider=provider)
        labels = ToolLabelManager.get_tool_labels(controller)
        
        return [
            ToolTransformService.tool_to_user_tool(
                tool_bundle,
                labels=labels,
            ) for tool_bundle in provider.tools
        ]

    @staticmethod
    def update_api_tool_provider(
        user_id: str, tenant_id: str, provider_name: str, original_provider: str, icon: dict, credentials: dict, 
        schema_type: str, schema: str, privacy_policy: str, custom_disclaimer: str, labels: list[str]
    ):
        """
            update api tool provider
        """
        if schema_type not in [member.value for member in ApiProviderSchemaType]:
            raise ValueError(f'invalid schema type {schema}')
        
        # check if the provider exists
        provider: ApiToolProvider = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id,
            ApiToolProvider.name == original_provider,
        ).first()

        if provider is None:
            raise ValueError(f'api provider {provider_name} does not exists')

        # parse openapi to tool bundle
        extra_info = {}
        # extra info like description will be set here
        tool_bundles, schema_type = ApiToolManageService.convert_schema_to_tool_bundles(schema, extra_info)
        
        # update db provider
        provider.name = provider_name
        provider.icon = json.dumps(icon)
        provider.schema = schema
        provider.description = extra_info.get('description', '')
        provider.schema_type_str = ApiProviderSchemaType.OPENAPI.value
        provider.tools_str = json.dumps(jsonable_encoder(tool_bundles))
        provider.privacy_policy = privacy_policy
        provider.custom_disclaimer = custom_disclaimer

        if 'auth_type' not in credentials:
            raise ValueError('auth_type is required')

        # get auth type, none or api key
        auth_type = ApiProviderAuthType.value_of(credentials['auth_type'])

        # create provider entity
        provider_controller = ApiToolProviderController.from_db(provider, auth_type)
        # load tools into provider entity
        provider_controller.load_bundled_tools(tool_bundles)

        # get original credentials if exists
        tool_configuration = ToolConfigurationManager(tenant_id=tenant_id, provider_controller=provider_controller)

        original_credentials = tool_configuration.decrypt_tool_credentials(provider.credentials)
        masked_credentials = tool_configuration.mask_tool_credentials(original_credentials)
        # check if the credential has changed, save the original credential
        for name, value in credentials.items():
            if name in masked_credentials and value == masked_credentials[name]:
                credentials[name] = original_credentials[name]

        credentials = tool_configuration.encrypt_tool_credentials(credentials)
        provider.credentials_str = json.dumps(credentials)

        db.session.add(provider)
        db.session.commit()

        # delete cache
        tool_configuration.delete_tool_credentials_cache()

        # update labels
        ToolLabelManager.update_tool_labels(provider_controller, labels)

        return { 'result': 'success' }
    
    @staticmethod
    def delete_api_tool_provider(
        user_id: str, tenant_id: str, provider_name: str
    ):
        """
            delete tool provider
        """
        provider: ApiToolProvider = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id,
            ApiToolProvider.name == provider_name,
        ).first()

        if provider is None:
            raise ValueError(f'you have not added provider {provider_name}')
        
        db.session.delete(provider)
        db.session.commit()

        return { 'result': 'success' }
    
    @staticmethod
    def get_api_tool_provider(
        user_id: str, tenant_id: str, provider: str
    ):
        """
            get api tool provider
        """
        return ToolManager.user_get_api_provider(provider=provider, tenant_id=tenant_id)
    
    @staticmethod
    def test_api_tool_preview(
        tenant_id: str, 
        provider_name: str,
        tool_name: str, 
        credentials: dict, 
        parameters: dict, 
        schema_type: str, 
        schema: str
    ):
        """
            test api tool before adding api tool provider
        """
        if schema_type not in [member.value for member in ApiProviderSchemaType]:
            raise ValueError(f'invalid schema type {schema_type}')
        
        try:
            tool_bundles, _ = ApiBasedToolSchemaParser.auto_parse_to_tool_bundle(schema)
        except Exception as e:
            raise ValueError('invalid schema')
        
        # get tool bundle
        tool_bundle = next(filter(lambda tb: tb.operation_id == tool_name, tool_bundles), None)
        if tool_bundle is None:
            raise ValueError(f'invalid tool name {tool_name}')
        
        db_provider: ApiToolProvider = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id,
            ApiToolProvider.name == provider_name,
        ).first()

        if not db_provider:
            # create a fake db provider
            db_provider = ApiToolProvider(
                tenant_id='', user_id='', name='', icon='',
                schema=schema,
                description='',
                schema_type_str=ApiProviderSchemaType.OPENAPI.value,
                tools_str=json.dumps(jsonable_encoder(tool_bundles)),
                credentials_str=json.dumps(credentials),
            )

        if 'auth_type' not in credentials:
            raise ValueError('auth_type is required')

        # get auth type, none or api key
        auth_type = ApiProviderAuthType.value_of(credentials['auth_type'])

        # create provider entity
        provider_controller = ApiToolProviderController.from_db(db_provider, auth_type)
        # load tools into provider entity
        provider_controller.load_bundled_tools(tool_bundles)

        # decrypt credentials
        if db_provider.id:
            tool_configuration = ToolConfigurationManager(
                tenant_id=tenant_id, 
                provider_controller=provider_controller
            )
            decrypted_credentials = tool_configuration.decrypt_tool_credentials(credentials)
            # check if the credential has changed, save the original credential
            masked_credentials = tool_configuration.mask_tool_credentials(decrypted_credentials)
            for name, value in credentials.items():
                if name in masked_credentials and value == masked_credentials[name]:
                    credentials[name] = decrypted_credentials[name]

        try:
            provider_controller.validate_credentials_format(credentials)
            # get tool
            tool = provider_controller.get_tool(tool_name)
            tool = tool.fork_tool_runtime(runtime={
                'credentials': credentials,
                'tenant_id': tenant_id,
            })
            result = tool.validate_credentials(credentials, parameters)
        except Exception as e:
            return { 'error': str(e) }
        
        return { 'result': result or 'empty response' }
    
    @staticmethod
    def list_api_tools(
        user_id: str, tenant_id: str
    ) -> list[UserToolProvider]:
        """
            list api tools
        """
        # get all api providers
        db_providers: list[ApiToolProvider] = db.session.query(ApiToolProvider).filter(
            ApiToolProvider.tenant_id == tenant_id
        ).all() or []

        result: list[UserToolProvider] = []

        for provider in db_providers:
            # convert provider controller to user provider
            provider_controller = ToolTransformService.api_provider_to_controller(db_provider=provider)
            labels = ToolLabelManager.get_tool_labels(provider_controller)
            user_provider = ToolTransformService.api_provider_to_user_provider(
                provider_controller,
                db_provider=provider,
                decrypt_credentials=True
            )
            user_provider.labels = labels

            # add icon
            ToolTransformService.repack_provider(user_provider)

            tools = provider_controller.get_tools(
                user_id=user_id, tenant_id=tenant_id
            )

            for tool in tools:
                user_provider.tools.append(ToolTransformService.tool_to_user_tool(
                    tenant_id=tenant_id,
                    tool=tool, 
                    credentials=user_provider.original_credentials, 
                    labels=labels
                ))

            result.append(user_provider)

        return result