main.py

import urllib.parse
from typing import Optional, TypedDict

from packaging.version import Version

from e2b.connection_config import ConnectionConfig, default_username
from e2b.envd.api import ENVD_API_FILES_ROUTE
from e2b.envd.versions import ENVD_DEFAULT_USER
from e2b.sandbox.signature import get_signature


class SandboxOpts(TypedDict):
    sandbox_id: str
    sandbox_domain: Optional[str]
    envd_version: Version
    envd_access_token: Optional[str]
    sandbox_url: Optional[str]
    traffic_access_token: Optional[str]
    connection_config: ConnectionConfig


class SandboxBase:
    mcp_port = 50005

    default_sandbox_timeout = 300

    default_template = "base"
    default_mcp_template = "mcp-gateway"

    def __init__(
        self,
        sandbox_id: str,
        envd_version: Version,
        envd_access_token: Optional[str],
        sandbox_domain: Optional[str],
        connection_config: ConnectionConfig,
        traffic_access_token: Optional[str] = None,
    ):
        self.__connection_config = connection_config
        self.__sandbox_id = sandbox_id
        self.__sandbox_domain = sandbox_domain or self.connection_config.domain
        self.__envd_version = envd_version
        self.__envd_access_token = envd_access_token
        self.__traffic_access_token = traffic_access_token
        self.__envd_api_url = self.connection_config.get_sandbox_url(
            self.sandbox_id, self.sandbox_domain
        )
        self.__mcp_token: Optional[str] = None

    @property
    def _envd_access_token(self) -> Optional[str]:
        """Private property to access the envd token"""
        return self.__envd_access_token

    @property
    def _mcp_token(self) -> Optional[str]:
        return self.__mcp_token

    @_mcp_token.setter
    def _mcp_token(self, token: str) -> None:
        self.__mcp_token = token

    @property
    def connection_config(self) -> ConnectionConfig:
        return self.__connection_config

    @property
    def _envd_version(self) -> Version:
        return self.__envd_version

    @property
    def traffic_access_token(self) -> Optional[str]:
        return self.__traffic_access_token

    @property
    def sandbox_domain(self) -> str:
        return self.__sandbox_domain

    @property
    def envd_api_url(self) -> str:
        return self.__envd_api_url

    @property
    def sandbox_id(self) -> str:
        """
        Unique identifier of the sandbox.
        """
        return self.__sandbox_id

    def _file_url(
        self,
        path: str,
        user: Optional[str] = None,
        signature: Optional[str] = None,
        signature_expiration: Optional[int] = None,
    ) -> str:
        url = urllib.parse.urljoin(self.envd_api_url, ENVD_API_FILES_ROUTE)
        query = {"path": path} if path else {}

        if user:
            query["username"] = user

        if signature:
            query["signature"] = signature

        if signature_expiration:
            if signature is None:
                raise ValueError("signature_expiration requires signature to be set")
            query["signature_expiration"] = str(signature_expiration)

        params = urllib.parse.urlencode(
            query,
            quote_via=urllib.parse.quote,
        )
        url = urllib.parse.urljoin(url, f"?{params}")

        return url

    def download_url(
        self,
        path: str,
        user: Optional[str] = None,
        use_signature_expiration: Optional[int] = None,
    ) -> str:
        """
        Get the URL to download a file from the sandbox.

        :param path: Path to the file to download
        :param user: User to download the file as
        :param use_signature_expiration: Expiration time for the signed URL in seconds

        :return: URL for downloading file
        """

        username = user
        if username is None and self._envd_version < ENVD_DEFAULT_USER:
            username = default_username

        use_signature = self._envd_access_token is not None
        if use_signature:
            signature = get_signature(
                path,
                "read",
                username,
                self._envd_access_token,
                use_signature_expiration,
            )
            return self._file_url(
                path, username, signature["signature"], signature["expiration"]
            )
        else:
            return self._file_url(path, username)

    def upload_url(
        self,
        path: str,
        user: Optional[str] = None,
        use_signature_expiration: Optional[int] = None,
    ) -> str:
        """
        Get the URL to upload a file to the sandbox.

        You have to send a POST request to this URL with the file as multipart/form-data.

        :param path: Path to the file to upload
        :param user: User to upload the file as
        :param use_signature_expiration: Expiration time for the signed URL in seconds

        :return: URL for uploading file
        """

        username = user
        if username is None and self._envd_version < ENVD_DEFAULT_USER:
            username = default_username

        use_signature = self._envd_access_token is not None
        if use_signature:
            signature = get_signature(
                path,
                "write",
                username,
                self._envd_access_token,
                use_signature_expiration,
            )
            return self._file_url(
                path, username, signature["signature"], signature["expiration"]
            )
        else:
            return self._file_url(path, username)

    def get_host(self, port: int) -> str:
        """
        Get the host address to connect to the sandbox.
        You can then use this address to connect to the sandbox port from outside the sandbox via HTTP or WebSocket.

        :param port: Port to connect to

        :return: Host address to connect to
        """
        return self.connection_config.get_host(
            self.sandbox_id, self.sandbox_domain, port
        )

    def get_mcp_url(self) -> str:
        """
        Get the MCP URL for the sandbox.

        :returns MCP URL for the sandbox.
        """
        return f"https://{self.get_host(self.mcp_port)}/mcp"