#!/bin/sh
#
# Prune the failure files of stale entries
#
# This must be called via:
#
#   lockf -k ${pb}/${arch}/${branch}/failure.lock ${pb}/scripts/prunefailure ${arch} ${branch} ${buildid}
#
# to avoid racing with any package builds in progress that might try to append to
# these files.

# configurable variables
pb=/var/portbuild

cleanup() {
    echo "Problem writing new failure file!"
    rm -f failure.new
    exit 1
}

if [ $# -ne 3 ]; then
    echo "prunefailure <arch> <branch> <buildid>"
    exit 1
fi

arch=$1
branch=$2
buildid=$3
shift 3

. ${pb}/${arch}/portbuild.conf
. ${pb}/scripts/buildenv


builddir=${pb}/${arch}/${branch}/builds/${buildid}

buildenv ${pb} ${arch} ${branch} ${builddir}

home=${pb}/${arch}/${branch}
cd $home

pkgdir=${builddir}/packages/All
index=${PORTSDIR}/${INDEXFILE}

if [ "`wc -l $index | awk '{print $1}'`" -lt 9000 ]; then
    echo "INDEX is corrupted, terminating!"
    exit 1
fi

echo "===> Pruning old failure file"

rm -f failure.new
IFS='|'
while read dir name ver olddate date count; do

    if [ -z "$dir" -o -z "$name" -o -z "$ver" -o -z "$olddate" -o -z "$date" -o -z "$count" ]; then
	echo Malformed entry "$dir|$name|$ver|$olddate|$date|$count"
	# Clean up the 'latest error log' symlink
	rm -f ${pb}/${arch}/${branch}/latest/${dir}
	continue
    fi

    entry=$(grep "|/usr/ports/$dir|" $index)
    if [ -z "$entry" ]; then
	echo $dir not in index
	rm -f ${pb}/${arch}/${branch}/latest/${dir}
	continue
    fi

    newver=$(echo $entry | awk '{print $1}')

    if [ -e "${builddir}/packages/All/$newver${PKGSUFFIX}" ]; then
	echo "$newver package exists, should not still be here!"
	rm -f ${pb}/${arch}/${branch}/latest/${dir}
	continue
    fi

    if grep -qxF $newver ${builddir}/duds.full; then
	echo "$newver listed in duds, should not be here"
	rm -f ${pb}/${arch}/${branch}/latest/${dir}
	continue
    fi

    (echo "$dir|$name|$newver|$olddate|$date|$count" >> $home/failure.new) || cleanup
done < $home/failure

mv failure.new failure