limosek-zaf/lib/zafcache

#!/bin/sh

. $(dirname $0)/preload.sh

help() {
	zaf_err "$0 seconds cmd..."
}

seconds=$1
shift
[ -z "$*" ] && help

zaf_trc "zafcache($seconds): $ITEM_KEY,'$2' '$3' '$4' '$5' '$6' '$7' '$8' '$9'"

if [ -z "$ITEM_KEY" ]; then
	key=$(echo $*|tr ' ' '_')
else
	key="$(echo ${ITEM_KEY}|cut -d '[' -f 1)[$(shift; echo $*|tr ' ' ',')]"
fi

if ! zaf_fromcache "$key"; then
	zaf_fromcache "$key" >/dev/null 2>/dev/null
	[ $? -eq 3 ] && { zaf_err "Operation $key already in progress."; }
	if which at >/dev/null 2>/dev/null; then
		at -M now >/dev/null 2>/dev/null <<EOF
		. $(dirname $0)/preload.sh; tmpf=\$(zaf_tmpfile cache); $@ 2>"\$tmpf" | zaf_tocache_stdin "$key" "$seconds" ; [ -s \$tmpf ] && zaf_wrn <\$tmpf
EOF
	else
		tmpf=$(zaf_tmpfile cache)
		$@ 2>"$tmpf" | zaf_tocache_stdin "$key" "$seconds" 
		[ -s $tmpf ] && zaf_wrn <$tmpf
	fi
fi