def _docker_build()

in python/rpdk/python/codegen.py [0:0]

• 32 lines of code
• 6 McCabe index (conditional complexity)

    def _docker_build(cls, external_path):
        internal_path = PurePosixPath("/project")
        command = " ".join(cls._make_pip_command(internal_path))
        LOG.debug("command is '%s'", command)

        volumes = {str(external_path): {"bind": str(internal_path), "mode": "rw"}}
        image = f"lambci/lambda:build-{cls.RUNTIME}"
        LOG.warning(
            "Starting Docker build. This may take several minutes if the "
            "image '%s' needs to be pulled first.",
            image,
        )
        docker_client = docker.from_env()
        try:
            logs = docker_client.containers.run(
                image=image,
                command=command,
                auto_remove=True,
                volumes=volumes,
                stream=True,
                user=f"{os.geteuid()}:{os.getgid()}",
            )
        except RequestsConnectionError as e:
            # it seems quite hard to reliably extract the cause from
            # ConnectionError. we replace it with a friendlier error message
            # and preserve the cause for debug traceback
            cause = RequestsConnectionError(
                "Could not connect to docker - is it running?"
            )
            cause.__cause__ = e
            raise DownstreamError("Error running docker build") from cause
        except (ContainerError, ImageLoadError, APIError) as e:
            raise DownstreamError("Error running docker build") from e
        LOG.debug("Build running. Output:")
        for line in logs:
            LOG.debug(line.rstrip(b"\n").decode("utf-8"))