#!/bin/sh
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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.

# Pre installation script

user=pxf
group=pxf
tcgroup=tomcat

groupadd=/usr/sbin/groupadd
useradd=/usr/sbin/useradd
usermod=/usr/sbin/usermod

if [ -f /etc/redhat-release ]; then
  system=redhat
elif [ -f /etc/SuSE-release ]; then
  system=suse
fi

# Create system group hadoop if doesn't exist
getent group hadoop > /dev/null || $groupadd -r hadoop

# Create system group pxf if doesn't exist
getent group $group > /dev/null || $groupadd -r $group

# Create system user pxf if doens't exist
getent passwd $user > /dev/null || $useradd --comment "PXF service user" -M -r -g $group -G hadoop $user

# Add pxf user to tomcat group so it can control the instance
if [ "$system" == "suse" ]; then
  getent group $tcgroup > /dev/null && $usermod -A $tcgroup $user
else
  getent group $tcgroup > /dev/null && $usermod -a -G $tcgroup $user
fi