#!/usr/bin/env bash
 
 # **install_prereqs.sh**
 
 # Install system package prerequisites
 #
 # install_prereqs.sh [-f]
 #
 # -f        Force an install run now
 
 if [[ -n "$1" &&  "$1" = "-f" ]]; then
     FORCE_PREREQ=1
 fi
 
 # If TOP_DIR is set we're being sourced rather than running stand-alone
 # or in a sub-shell
 if [[ -z "$TOP_DIR" ]]; then
     # Keep track of the devstack directory
     TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
 
     # Import common functions
     source $TOP_DIR/functions
 
     # Determine what system we are running on.  This provides ``os_VENDOR``,
     # ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
     # and ``DISTRO``
     GetDistro
 
     # Needed to get ``ENABLED_SERVICES``
     source $TOP_DIR/stackrc
 
     # Prereq dirs are here
     FILES=$TOP_DIR/files
 fi
 
 # Minimum wait time
 PREREQ_RERUN_MARKER=${PREREQ_RERUN_MARKER:-$TOP_DIR/.prereqs}
 PREREQ_RERUN_HOURS=${PREREQ_RERUN_HOURS:-2}
 PREREQ_RERUN_SECONDS=$((60*60*$PREREQ_RERUN_HOURS))
 
 NOW=$(date "+%s")
 LAST_RUN=$(head -1 $PREREQ_RERUN_MARKER 2>/dev/null || echo "0")
 DELTA=$(($NOW - $LAST_RUN))
 if [[ $DELTA -lt $PREREQ_RERUN_SECONDS && -z "$FORCE_PREREQ" ]]; then
     echo "Re-run time has not expired ($(($PREREQ_RERUN_SECONDS - $DELTA)) seconds remaining); exiting..."
     return 0
 fi
 
 # Make sure the proxy config is visible to sub-processes
 export_proxy_variables
 
 
 # Install Packages
 # ================
 
 # Install package requirements

 install_package $(get_packages $ENABLED_SERVICES)

 
 if [[ -n "$SYSLOG" && "$SYSLOG" != "False" ]]; then
     if is_ubuntu || is_fedora; then
         install_package rsyslog-relp
     elif is_suse; then
         install_package rsyslog-module-relp
     else
         exit_distro_not_supported "rsyslog-relp installation"
     fi
 fi
 
 
 # Mark end of run
 # ---------------
 
 date "+%s" >$PREREQ_RERUN_MARKER
 date >>$PREREQ_RERUN_MARKER