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#!/bin/sh
# receive one package to be built from the build-list whose dependencies
# are already satisfied or which breaks a dependency cycle
# exit code shows state of success:
# 0: ok, I gave you an assignment
# 1: come back (shortly) later - I was running already
# 2: come back later - there are still packages to be built,
# but currently none has all its dependencies ready
# 3: come back after the next run of get-package-updates - currently
# there are no pending packages
# TODO: if all loops are locked, broken packages are not handed out as
# long as the script believes there is a looped package before the
# broken one on the build-list - clean up that mess!
# shellcheck source=conf/default.conf
. "${0%/*}/../conf/default.conf"
mkdir -p "${work_dir}/package-states"
hand_out_assignment() {
# locked and blocked packages won't be handed out
if package_locked_or_blocked "$1" "$2" "$3" "$4"; then
return 0
fi
# we don't care anymore if an older version of this package was
# "locked" or "broken" (we keep only marker for older "done" packages)
find "${work_dir}/package-states" -maxdepth 1 | \
grep "/$(str_to_regex "${1}")\(\.[^.]\+\)\{3\}\.\(locked\|broken\)\$" | \
grep -v "/$(str_to_regex "$1.$2.$3.$4.")[^.]\+\$" | \
xargs -rn1 rm -f
echo "$1 $2 $3 $4"
# shellcheck disable=SC2154
echo "${slave}" > "${work_dir}/package-states/$1.$2.$3.$4.locked"
# lock every loop this package breaks
find "${work_dir}/build-list.loops" -maxdepth 1 \
-name 'loop_*' \
-not -name 'loop_*.locked' \
-exec grep -qxF "$1" '{}' \; \
-exec touch '{}.locked' \; \
-print >> \
"${work_dir}/package-states/$1.$2.$3.$4.locked"
exit 0
}
if [ -s "${work_dir}/build-master-sanity" ]; then
>&2 echo 'Build master is not sane.'
exit 1
fi
# Create a lock file and a trap.
exec 9> "${build_list_lock_file}"
if ! flock -n 9; then
>&2 echo 'come back (shortly) later - I cannot lock build list.'
exit 1
fi
clean_up() {
rm -f "${build_list_lock_file}"
}
trap clean_up EXIT
# Check if there are any pending packages at all and if the requester
# has already got an assignment.
pending_packages=false
while read -r package git_revision mod_git_revision repository; do
if [ -z "${git_revision}${mod_git_revision}${repository}" ] && \
[ "${package}" = 'break_loops' ]; then
continue
fi
generate_package_metadata "${package}.${git_revision}.${mod_git_revision}.${repository}"
if [ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.locked" ]; then
if [ "${slave}" = "$(head -n1 "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.locked")" ]; then
echo "${package} ${git_revision} ${mod_git_revision} ${repository}"
exit
fi
elif [ ! -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.blocked" ]; then
pending_packages=true
fi
done < "${work_dir}/build-list"
if ! ${pending_packages}; then
>&2 echo 'come back after the next run of get-package-updates - currently there are no pending packages'
exit 3
fi
# Find first package of build-list whose dependencies are all met
for hand_out_broken in false true; do
# shellcheck disable=SC2094
while read -r package git_revision mod_git_revision repository; do
if [ -z "${git_revision}${mod_git_revision}${repository}" ] && \
[ "${package}" = 'break_loops' ]; then
if ${hand_out_broken}; then
first=true
while read -r s; do
if [ "${s}" = 'break_loops' ] && \
${first}; then
first=false
continue
fi
printf '%s\n' "${s}"
done < \
"${work_dir}/build-list" | \
sponge "${work_dir}/build-list"
insert_break_loops_orders "${work_dir}/build-list"
break
else
continue
fi
fi
if package_locked_or_blocked "${package}" "${git_revision}" "${mod_git_revision}" "${repository}"; then
continue
fi
if ! ${hand_out_broken} && \
[ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.broken" ]; then
continue
fi
if [ -n "$(find_dependencies_on_build_list "${package}" "${git_revision}" "${mod_git_revision}" "${repository}")" ]; then
continue
fi
hand_out_assignment "${package}" "${git_revision}" "${mod_git_revision}" "${repository}"
done < \
"${work_dir}/build-list"
done
# Find package (of all packages which are not locked and have been broken the least times)
# which breaks the most unlocked loops
locked_packages=$(
find "${work_dir}/package-states/" -maxdepth 1 -printf '%f\n' | \
grep '\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$' | \
sed 's|\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$||'
)
grep -vxF 'break_loops' "${work_dir}/build-list" | \
sort -k1,1 > \
"${work_dir}/build-list.sorted-by-package"
for package in $(
# shellcheck disable=SC2030
find "${work_dir}/build-list.loops/" -maxdepth 1 | \
grep '/loop_[0-9]\+$' | \
while read -r loop; do
if [ -z "$(
(
cat "${loop}"
echo "${locked_packages}"
) | \
sort | \
uniq -d
)" ]; then
cat "${loop}"
fi
done | \
sort | \
uniq -c | \
join -1 2 -2 1 -o 1.1,2.1,2.2,2.3,2.4 \
- \
"${work_dir}/build-list.sorted-by-package" | \
while read -r count package git_revision git_mod_revision repository; do
if [ -f "${work_dir}/package-states/${package}.${git_revision}.${git_mod_revision}.${repository}.broken" ]; then
trials=$(
wc -l < \
"${work_dir}/package-states/${package}.${git_revision}.${git_mod_revision}.${repository}.broken"
)
else
trials='0'
fi
printf '%s %s %s.%s.%s.%s\n' \
"${trials}" \
"${count}" \
"${package}" \
"${git_revision}" \
"${git_mod_revision}" \
"${repository}"
done | \
sort -k1n,1 -k2nr,2 | \
cut -d' ' -f3
); do
# shellcheck disable=SC2046,SC2031
hand_out_assignment $(
echo "${package}" | \
sed 's|\.\([^.]\+\)\.\([^.]\+\)\.\([^.]\+\)$| \1 \2 \3|'
)
done
# Remove the lock file
>&2 echo 'come back later - there are still packages to be built, but currently none has all its dependencies ready'
exit 2
|