dify/api/core/tools/tool_label_manager.py

from sqlalchemy import select

from core.tools.__base.tool_provider import ToolProviderController
from core.tools.builtin_tool.provider import BuiltinToolProviderController
from core.tools.custom_tool.provider import ApiToolProviderController
from core.tools.entities.values import default_tool_label_name_list
from core.tools.workflow_as_tool.provider import WorkflowToolProviderController
from extensions.ext_database import db
from models.tools import ToolLabelBinding


class ToolLabelManager:
    @classmethod
    def filter_tool_labels(cls, tool_labels: list[str]) -> list[str]:
        """
        Filter tool labels
        """
        tool_labels = [label for label in tool_labels if label in default_tool_label_name_list]
        return list(set(tool_labels))

    @classmethod
    def update_tool_labels(cls, controller: ToolProviderController, labels: list[str]):
        """
        Update tool labels
        """
        labels = cls.filter_tool_labels(labels)

        if isinstance(controller, ApiToolProviderController | WorkflowToolProviderController):
            provider_id = controller.provider_id
        else:
            raise ValueError("Unsupported tool type")

        # delete old labels
        db.session.query(ToolLabelBinding).where(ToolLabelBinding.tool_id == provider_id).delete()

        # insert new labels
        for label in labels:
            db.session.add(
                ToolLabelBinding(
                    tool_id=provider_id,
                    tool_type=controller.provider_type.value,
                    label_name=label,
                )
            )

        db.session.commit()

    @classmethod
    def get_tool_labels(cls, controller: ToolProviderController) -> list[str]:
        """
        Get tool labels
        """
        if isinstance(controller, ApiToolProviderController | WorkflowToolProviderController):
            provider_id = controller.provider_id
        elif isinstance(controller, BuiltinToolProviderController):
            return controller.tool_labels
        else:
            raise ValueError("Unsupported tool type")
        stmt = select(ToolLabelBinding.label_name).where(
            ToolLabelBinding.tool_id == provider_id,
            ToolLabelBinding.tool_type == controller.provider_type.value,
        )
        labels = db.session.scalars(stmt).all()

        return list(labels)

    @classmethod
    def get_tools_labels(cls, tool_providers: list[ToolProviderController]) -> dict[str, list[str]]:
        """
        Get tools labels

        :param tool_providers: list of tool providers

        :return: dict of tool labels
            :key: tool id
            :value: list of tool labels
        """
        if not tool_providers:
            return {}

        for controller in tool_providers:
            if not isinstance(controller, ApiToolProviderController | WorkflowToolProviderController):
                raise ValueError("Unsupported tool type")

        provider_ids = []
        for controller in tool_providers:
            assert isinstance(controller, ApiToolProviderController | WorkflowToolProviderController)
            provider_ids.append(controller.provider_id)

        labels: list[ToolLabelBinding] = (
            db.session.query(ToolLabelBinding).where(ToolLabelBinding.tool_id.in_(provider_ids)).all()
        )

        tool_labels: dict[str, list[str]] = {label.tool_id: [] for label in labels}

        for label in labels:
            tool_labels[label.tool_id].append(label.label_name)

        return tool_labels