postinstall

#!/bin/sh

# OpenHA postinstall script

LOG_D=/var/log/openha
CONF_D=/etc/openha
VAR_D=/var/lib/openha
SHARE_D=/usr/share/openha
PROC_D=$LOG_D/proc
SVC_D=$VAR_D/services

[ ! -d $LOG_D ] && mkdir $LOG_D

log () {
    exec >> $LOG_D/postinstall.log 2>&1
    DATE=`date +"%Y-%m-%d %H:%M:%S"`
    printf "%b\n" "$DATE $*"
}

BASEDIR=${BASEDIR:-/}

# removing leading / if present
TRAILING=`echo "$BASEDIR" | sed 's/^.*\(.\)$/\1/'`
if [ "${TRAILING}" = "/" ] ; then
  MYBASEDIR=`echo "$BASEDIR" | sed 's/.$//'`
else
  MYBASEDIR=$BASEDIR
fi

LD_LIBRARY_PATH=${MYBASEDIR}/usr/local/lib; export LD_LIBRARY_PATH

create_directories()
{
    log "Creating openha directories structure"
    [ ! -d $CONF_D ] && mkdir -p $CONF_D
    [ ! -d $PROC_D ] && mkdir -p $PROC_D
    [ ! -d $SVC_D ] && mkdir -p $SVC_D
}

remove_old_symlinks()
{
    for symlink in ${MYBASEDIR}/etc/rc2.d/S99cluster ${MYBASEDIR}/etc/rc3.d/S99cluster ${MYBASEDIR}/etc/rc0.d/K01cluster ${MYBASEDIR}/etc/rcS.d/K01cluster
    do
        if test -h $symlink
        then
            log "remove_old_symlinks : removing $symlink"
            rm -f $symlink
        fi
    done

}

is_systemd_mgmt()
{
    type systemctl >> /dev/null 2>&1
    ret=$?
    if test $ret -eq 0
    then
        log "is_systemd_mgmt : detected systemd managed distribution"
        return 1
    else
        return 0
    fi
}

is_chkconfig_mgmt()
{
    type chkconfig >> /dev/null 2>&1
    ret=$?
    if test $ret -eq 0
    then
        log "is_chkconfig_mgmt : detected chkconfig managed distribution"
        return 1
    else
        return 0
    fi
}

is_updatercd_mgmt()
{
    type update-rc.d >> /dev/null 2>&1
    ret=$?
    if test $ret -eq 0
    then
        log "is_updatercd_mgmt : detected update-rc.d managed distribution"
        return 1
    else
        return 0
    fi
}

systemd_launch()
{
    systemdsvc="opensvc-openha.service"
    
    log "systemd_launch : Copying systemd unit file to system"
    cp -f $SHARE_D/systemd.opensvc-openha.service /etc/systemd/system/$systemdsvc
    
    log "systemd_launch : setting perms on systemd unit file"
    chmod 644 /etc/systemd/system/$systemdsvc
    
    log "systemd_launch : reloading systemd configuration"
    systemctl -q daemon-reload
    
    log "systemd_launch : enabling opensvc-openha.service unit"
    systemctl -q enable $systemdsvc
}

chkconfig_launch()
{
   if test -f /etc/init.d/ezha -o -h /etc/init.d/ezha
   then
       log "chkconfig_launch : removing existing /etc/init.d/ezha"
       chkconfig --del ezha >> /dev/null 2>&1
       rm -f /etc/init.d/ezha
   fi

   if test -f /etc/init.d/openha -o -h /etc/init.d/openha
   then
       log "chkconfig_launch : removing existing /etc/init.d/openha"
       chkconfig --del openha >> /dev/null 2>&1
       rm -f /etc/init.d/openha
   fi

   log "chkconfig_launch : copying launcher to /etc/init.d/openha"
   cp -f $SHARE_D/init/openha.init /etc/init.d/openha
   chmod 755 /etc/init.d/openha

   log "chkconfig_launch : enabling launcher /etc/init.d/openha"
   chkconfig --add openha
}

updatercd_launch()
{
   if test -f /etc/init.d/ezha -o -h /etc/init.d/ezha
   then
       log "updatercd_launch : removing existing /etc/init.d/ezha"
       update-rc.d -f ezha remove >> /dev/null 2>&1
       rm -f /etc/init.d/ezha
   fi

   if test -f /etc/init.d/openha -o -h /etc/init.d/openha
   then
       log "updatercd_launch : removing existing /etc/init.d/openha"
       update-rc.d -f openha remove >> /dev/null 2>&1
       rm -f /etc/init.d/openha
   fi

   log "updatercd_launch : copying launcher to /etc/init.d/openha"
   cp -f $SHARE_D/init/openha.init /etc/init.d/openha
   chmod 755 /etc/init.d/openha

   log "updatercd_launch : enabling launcher /etc/init.d/openha"
   update-rc.d openha defaults
}

legacy_launch()
{
    log "legacy_launch : creating symlinks"

    if test -d ${MYBASEDIR}/etc/init.d
    then
        TARGET=${MYBASEDIR}/etc/init.d/openha
    elif test -d ${MYBASEDIR}/sbin/init.d
    then
        TARGET=${MYBASEDIR}/sbin/init.d/openha
    else
        return
    fi

    cp -f ${MYBASEDIR}/usr/share/openha/init/openha.init ${TARGET}
    rm -f /etc/rc?.d/K01cluster
    rm -f /etc/rc?.d/S99cluster
    sls="${MYBASEDIR}/etc/rc2.d/S99openha ${MYBASEDIR}/etc/rc0.d/K01openha ${MYBASEDIR}/etc/rcS.d/K01openha"
    if [ `uname -s` = "Linux" ]
    then
        sls="$sls ${MYBASEDIR}/etc/rc3.d/S99openha"
    fi
    for symlink in $sls
    do
        ln -sf ../init.d/openha $symlink
	if test $? -eq 0
	then
          log "legacy_launch : adding $symlink"
        else
          log "legacy_launch : error while adding $symlink"
	fi
    done
}

migrate_to_fsh() {
	[ "$(echo /etc/openha/*)" != "/etc/openha/*" ] && return
	for cf in nodes monitor services
	do
		[ -f /usr/local/cluster/conf/$cf ] && {
			log "cp /usr/local/cluster/conf/$cf /etc/openha"
			cp /usr/local/cluster/conf/$cf /etc/openha
		}
	done
}

# start
create_directories
remove_old_symlinks

is_systemd_mgmt   ; reta=$?
is_chkconfig_mgmt ; retb=$?
is_updatercd_mgmt ; retc=$?

log "main : reta=$reta  retb=$retb  retc=$retc"

if test $reta -eq 1
then
    systemd_launch
elif test $retb -eq 1
then
    chkconfig_launch
elif test $retc -eq 1
then
    updatercd_launch
else
    legacy_launch
fi

migrate_to_fsh

exit 0