Method rollback_lambda_function_version

zappa/core.py:1475–1511

Rollback the lambda function code 'versions_back' number of revisions. Returns the Function ARN.

(self, function_name, versions_back=1, publish=True)

        return self.lambda_client.invoke(**invoke_kwargs)

    def rollback_lambda_function_version(self, function_name, versions_back=1, publish=True):
        """
        Rollback the lambda function code 'versions_back' number of revisions.
        Returns the Function ARN.
        """
        response = self.lambda_client.list_versions_by_function(FunctionName=function_name)

        # https://github.com/Miserlou/Zappa/pull/2192
        if (
            len(response.get("Versions", [])) > 1
            and "PackageType" in response["Versions"][-1]
            and response["Versions"][-1]["PackageType"] == "Image"
        ):
            raise NotImplementedError("Zappa's rollback functionality is not available for Docker based deployments")

        # Take into account $LATEST
        if len(response["Versions"]) < versions_back + 1:
            logger.warning(f"We do not have {versions_back} revisions. Aborting")
            return False

        revisions = [int(revision["Version"]) for revision in response["Versions"] if revision["Version"] != "$LATEST"]
        revisions.sort(reverse=True)

        response = self.lambda_client.get_function(
            FunctionName="function:{}:{}".format(function_name, revisions[versions_back])
        )
        response = requests.get(response["Code"]["Location"])

        if response.status_code != 200:
            logger.error(f"Failed to get version {versions_back} of {function_name} code")
            return False

        response = self.lambda_client.update_function_code(
            FunctionName=function_name, ZipFile=response.content, Publish=publish
        )  # pragma: no cover

        return response["FunctionArn"]

    def wait_until_lambda_function_is_active(self, function_name):
        """