ansible-wrapper

#!/bin/sh

# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -e

PYTHON_BASE=${PYTHON_BASE:-`pwd`/.cache/virtualenv}

fail()
{
    printf >&2 "${1}\n"
    exit 1
}

find_venv()
{
    if which python3 1>/dev/null; then
        python3 -m venv --help >/dev/null 2>&1
        if [ ${?} -eq 0 ]; then
            echo 'python3 -m venv'
            return
        fi
    fi
    which virtualenv
}

ensure_venv()
{
    if [ ! -x ${PYTHON_BASE}/bin/pip ]; then
        venv=`find_venv`
        if [ -z "${venv}" ]; then
            fail "Python 3 with the venv module or Python 2 with virtualenv must be installed..."
        fi
        ${venv} --system-site-packages ${PYTHON_BASE}
    fi
    if [ ! -f requirements.txt ]; then
        fail "No requirements.txt found. This must be run from the root of the repository..."
    fi
    ${PYTHON_BASE}/bin/pip install -r requirements.txt
}

ensure_venv
${PYTHON_BASE}/bin/ansible-playbook ${@}