EXRM release rpm with live upgrade

extest

#!/bin/bash
#
# chkconfig: 345 95 5
# description: The extest service script
# process name: extest
#
# Author: Steve Pallen
#

# Source function library.
. /etc/init.d/functions

PROG_NAME=extest
INSTALL_DIR=/usr/local/$PROG_NAME
PROG=$INSTALL_DIR/bin/$PROG_NAME
RETVAl=0

txtgrn=$(tput setaf 2)
txtred=$(tput setaf 1)
txtrst=$(tput sgr0)

if [ -f /etc/sysconfig/$PROG_NAME ] ; then
	. /etc/sysconfig/$PROG_NAME
fi

[ -f $PROG ] || exit 0

message() {
  if [ $RETVAL -eq 0 ]; then
    printf "%-45s[${txtgrn}  OK  ${txtrst}]\n" "$1"
  else
    printf "%-45s[${txtred}FAILED${txtrst}]\n" "$1"
  fi
}
run() {
  HOME=$INSTALL_DIR $PROG $1 > /dev/null 2>&1
}
start() {
	      #echo -n $"Starting $PROG_NAME: "
        run start
        RETVAL=$?
        message $"Starting $PROG_NAME: "
        return $RETVAL
}
stop() {
        run stop
        RETVAL=$?
        message "Stopping $PROG_NAME: "
        return $RETVAL
}
restart() {
       run restart
        RETVAL=$?
        message $"Restarting $PROG_NAME: "
        return $RETVAL
}
status() {
      run ping
      RETVAL=$?
      echo -n "Status: $PROG_NAME is "
      if [ $RETVAL -eq 0 ]; then
        echo "running ..."
      else
        echo "stopped"
      fi
      return $RETVAL
} 


case "$1" in
        start)
          start
          RETVAL=$?
                ;;
        stop)
                stop
                ;;
        status)
                status
                ;;
        restart)
                restart
                ;;
        *)
                echo $"Usage: $0 {start|stop|status|restart}"
                exit 1
                ;;
esac
exit $RETVAL

extest.spec

%define install_dir     /usr/local
Name: extest
Version: 0.0.2

# Up issuing the release is NOT supported due to live upgrades. Please 
# up issue the Version only
Release: 0%{?dist}
Summary: Example EXRM Test Project

Group:         Applications
License:       GPL
URL:           https://github.com/bitwalker/exrm
Source0:       %{name}-%{version}.tar.gz
Source1:       %{name}-other-%{version}.tar.gz
BuildRoot:     %{_tmppath}/%{name}-root
BuildArchitectures: x86_64
AutoReq:	0
Provides: %{name}

%description
Some description goes here

%install
rm -rf $RPM_BUILD_ROOT
mkdir -p $RPM_BUILD_ROOT/tmp
mkdir -p $RPM_BUILD_ROOT/%{install_dir}/%{name}
tar xzf %{SOURCE1} -C %{buildroot}
cp %{SOURCE0} %{buildroot}/tmp/

%clean
rm -rf $RPM_BUILD_ROOT

%post
if [ $1 -eq 1 ]; then
    # new install
    tar xzf /tmp/%{name}-%{version}.tar.gz -C %{install_dir}/%{name}
    rm /tmp/%{name}-%{version}.tar.gz
    /sbin/chkconfig --add %{name}
    /sbin/service %{name} start  > /dev/null 2>&1
else
    # upgrade
    mkdir %{install_dir}/%{name}/releases/%{version}
    mv /tmp/%{name}-%{version}.tar.gz %{install_dir}/%{name}/releases/%{version}/%{name}.tar.gz
    cd %{install_dir}/%{name} && bin/%{name} upgrade "%{version}"
fi
exit 0

%preun
if [ "$1" = 0 ]; then
    # package remove
    /sbin/service %{name} stop > /dev/null 2>&1
    /sbin/chkconfig --del %{name}
    rm -rf /usr/local/%{name}
fi
exit 0

%files
%defattr(-, root, root, -)
/tmp/%{name}-%{version}.tar.gz
%dir /usr/local/%{name}

%defattr(755, root, root, -)
/etc/init.d/%{name}

%changelog
* Sat May 10 2014 Stephen Pallen <steve@example.com> 0.0.2-0
- Added support for live upgrades
* Fri May 9 2014 Stephen Pallen <steve@example.com> 0.0.1-0
- Initial attempt

This version of the spec file and init.d script supports live upgrades. Note that I have renamed the project to extest.
This solution uses the output tar file from Exrm release generation.