launchd-flowd

#!/usr/bin/env bash
#
#  Synopsis:
#	Schema flowd server for called from Mac OS/X launchd.
#  Usage:
#	launchd-flowd path/to/<schema>.flow
#
#	<key>ProgramArguments</key>
#	  <array>
#	    <string>/usr/local/setspace/sbin/launchd-flowd</string>
#	    <string>etc/fffile5.flow</string>
#	  </array>
#	<key>WorkingDirectory</key>
#	<string>/usr/local/setspace/schema/fffile5</string>
#  Note:
#	The SIP security palavar may imply a rethink of locating this script
#	in /usr/local/setspace/sbin.  sbin/ is only readable by user setspace,
#	which seems to cause issues with SIP.  still learning.
#

log()
{
	echo "$(date +'%Y/%m/%d %H:%M:%S'): $@"
}

die()
{
	echo "ERROR: $@" >&2
	exit 2
}

leave()
{
	log 'good bye, cruel world'
}

test $# = 1 || die 'wrong number of arguments'
FLOW=$1

log 'hello, world'
trap leave EXIT

test -n "$SETSPACE_ROOT" || die "environment var not defined: SETSPACE_ROOT"

log "SETSPACE_ROOT=$SETSPACE_ROOT"
log "flow file: $FLOW"
log "current directory: $(pwd)"

#
#  source in global $SETSPACE_ROOT/etc/profile
#
PROFILE=$SETSPACE_ROOT/etc/profile
log "source: $PROFILE"
test -r $PROFILE || die "can not read setspace profile: $PROFILE"
. $PROFILE || die "sourcing setspace profile failed: $PROFILE"

#
#  source in schema specific profile
#
PROFILE=etc/profile
log "source: $PROFILE"
test -r etc/profile || die "can not read schema profile: $PROFILE"
. $PROFILE || die "sourcing schema profile failed: $PROFILE"

WHICH_OS=$(uname -s)
log "operating system: $WHICH_OS"

#  on macos, always add gnu tools from mac ports
if [ "$WHICH_OS" = Darwin ];  then
	log 'checking for gnu tools from mac ports ...'
	#  always add gnu tools in mac ports
	test -d /opt/local/bin && PATH=/opt/local/bin:$PATH
	test -d /opt/local/libexec/gnubin				&&
		PATH=/opt/local/libexec/gnubin:$PATH
fi

log "PATH=$PATH"
log "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"

log 'clearing run/ directory of stale files ...'
find run -follow -type f -name 'flowd*' | while run ZAP_RUN;  do
	log "zap state run/ file: $ZAP_RUN"
	rm $ZAP_RUN
done

INITX=sbin/launchd-flowd-init
if [ -x $INITX ];  then
	log "$INITX exists, so initializing ..."
	$INITX || die "launchd-flow-init failed: exit status=$?"
else
	log 'WARN (ok): $INITX does not exist'
fi

log 'dumping process environment ...'
env | sort | while read E;  do
	log "$E"
done

log "execing flowd server $FLOW ..."
exec flowd server $FLOW