#!/usr/bin/env bash
#
# Copyright 2016, Rackspace US, Inc.
#
# 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
#
#     http://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.

# What this script is for:
#   This script runs the supplied commands in the utility container on
#   localhost.  It simplifies performing actions from the utility
#   container. It's most useful for use with an AIO installation.

__check_cmd_avail ()
{
    if hash ${1} &> /dev/null; then
        echo "The command '$1' could not be found, exiting"
        exit 1
    fi
}

# Make sure we're running as root
if [[ $EUID -ne 0 ]]; then
  echo "This script must be run as root.  Exiting..." 2>&1
  exit 1
fi

# Ensure a command was provided
if [ $# -eq 0 ]; then
  echo "Usage: $(basename $0) <command>"
  exit 1
fi

LXCATTACH="lxc-attach"
LXCLS="lxc-ls"

# Verify we have the commands we need
__check_cmd_avail ${LXCATTACH}
__check_cmd_avail ${LXCLS}

# Find the first utility container to execute in
UTIL=$(${LXCLS} -1 --filter utility | head -n 1)
if [ "z${UTIL}" == "z" ]; then
  echo "*** Couldn't find a utility container.  Exiting..."
  exit 1
fi

${LXCATTACH} -n ${UTIL} -- bash -c ". /root/openrc && $*"