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limosek-zaf/lib/zafcache
2016-04-21 15:29:48 +02:00

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#!/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