dify/api/core/plugin/impl/exc.py

class PluginDaemonError(Exception):
    """Base class for all plugin daemon errors."""

    def __init__(self, description: str) -> None:
        self.description = description

    def __str__(self) -> str:
        # returns the class name and description
        return f"{self.__class__.__name__}: {self.description}"


class PluginDaemonInternalError(PluginDaemonError):
    pass


class PluginDaemonClientSideError(PluginDaemonError):
    pass


class PluginDaemonInternalServerError(PluginDaemonInternalError):
    description: str = "Internal Server Error"


class PluginDaemonUnauthorizedError(PluginDaemonInternalError):
    description: str = "Unauthorized"


class PluginDaemonNotFoundError(PluginDaemonInternalError):
    description: str = "Not Found"


class PluginDaemonBadRequestError(PluginDaemonClientSideError):
    description: str = "Bad Request"


class PluginInvokeError(PluginDaemonClientSideError):
    description: str = "Invoke Error"


class PluginUniqueIdentifierError(PluginDaemonClientSideError):
    description: str = "Unique Identifier Error"


class PluginNotFoundError(PluginDaemonClientSideError):
    description: str = "Plugin Not Found"


class PluginPermissionDeniedError(PluginDaemonClientSideError):
    description: str = "Permission Denied"