1#!/usr/bin/env bash
2# Copyright 2021 gRPC authors.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#     http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15
16# Expected $XDS_K8S_DRIVER_DIR to be set by the file sourcing this.
17readonly XDS_K8S_DRIVER_VENV_DIR="${XDS_K8S_DRIVER_VENV_DIR:-$XDS_K8S_DRIVER_DIR/venv}"
18
19if [[ -z "${VIRTUAL_ENV}" ]]; then
20  if [[ -d "${XDS_K8S_DRIVER_VENV_DIR}" ]]; then
21    # Intentional: No need to check python venv activate script.
22    # shellcheck source=/dev/null
23    source "${XDS_K8S_DRIVER_VENV_DIR}/bin/activate"
24  else
25    echo "Missing python virtual environment directory: ${XDS_K8S_DRIVER_VENV_DIR}" >&2
26    echo "Follow README.md installation steps first." >&2
27    exit 1
28  fi
29fi
30