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ci-automation/garbage_collect.sh: min age, orphan removal
This change improves the build cache garbage collector to remove
orphaned artifact directories - i.e. directories to which no version tag
exists in the scripts repo.
SDK containers built by Github actions (using update_sdk_container) are
igored by this change because these are handled in a separate garbage
collection script.
Also, a new command line parameter has been added to remove artifacts
older than the specified number of days (defaulting to 14):
- If neither number of builds nor max age is specified, the script
defaults to 50 builds to keep, and a max age of 14 days.
The max age overrides the number of builds to keep, so more than
50 builds may be kept.
- If only the number of builds to keep is specified, the max age is
set to "0" (i.e. today).
- If both are specified, max age again overrides number of builds to
keep.
Signed-off-by: Thilo Fromm <thilofromm@microsoft.com>
This commit is contained in:
Thilo Fromm
parent
f316a93178
commit
682dbfe365
@ -8,10 +8,27 @@
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#
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# garbage_collect() should be called after sourcing.
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#
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# The garbage collector will remove artifacts of all NON-RELEASE versions from the build cache
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# which BOTH
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# * exceed the number of builds to keep (defaults to 50)
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# AND
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# * are older than the minimum purge age (14 days by default)
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#
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# Note that the min age threshold can lead to MORE than 50 builds being kept if this script
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# is run with its default values.
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#
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# Additionally, the garbage collector will remove all artifacts and directories that do not have
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# a version TAG in the scripts repository.
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#
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# OPTIONAL INPUT
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# - Number of (recent) versions to keep. Defaults to 50.
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# Explicitly setting this value will reset the minimum age (see below) to 0 days.
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# - Minimum age of version tag to be purged, in days. Defaults to 14.
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# - PURGE_VERSIONS (Env variable). Space-separated list of versions to purge
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# instead of all but the 50 most recent ones.
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# Setting this will IGNORE minimum age and number of versions to keep.
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# NOTE that only dev versions (not official releases) may be specified.
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# This is to prevent accidental deletion of official release tags from the git repo.
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# - DRY_RUN (Env variable). Set to "y" to just list what would be done but not
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# actually purge anything.
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@ -38,26 +55,60 @@ function garbage_collect() {
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# --
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function _garbage_collect_impl() {
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local keep="${1:-50}"
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local keep="${1:-}"
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local min_age_days="${2:-}"
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local dry_run="${DRY_RUN:-}"
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local purge_versions="${PURGE_VERSIONS:-}"
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local versions_detected="$(git tag -l --sort=-committerdate \
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| grep -E '(main|alpha|beta|stable|lts)-[0-9]+\.[0-9]+\.[0-9]+\-.*' \
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| grep -vE '(-pro)$')"
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# Set defaults; user-provided 'keep' has priority over default 'min_age_days'
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if [ -n "${keep}" -a -z "${min_age_days}" ] ; then
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min_age_days="0"
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elif [ -z "${keep}" ] ; then
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keep="50"
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fi
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if [ -z "${min_age_days}" ] ; then
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min_age_days="14"
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fi
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echo "######## Full list of version(s) found ########"
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echo "${versions_detected}" | awk '{printf "%5d %s\n", NR, $0}'
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local min_age_date="$(date -d "${min_age_days} days ago" +'%Y-%m-%d')"
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echo "######## Garbage collector starting ########"
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echo
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if [ -z "${purge_versions}" ] ; then
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echo "Number of versions to keep: '${keep}'"
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echo "Keep newer than: '${min_age_date}' (overrides number of versions to keep)"
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fi
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echo
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if [ -z "${purge_versions}" ] ; then
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keep="$((keep + 1))" # for tail -n+...
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# Generate a list "<timestamp> | <tagname>" from all repo tags that look like dev versions
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local versions_detected="$(git tag -l --sort=-committerdate \
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--format="%(creatordate:format:%Y-%m-%d) | %(refname:strip=2)" \
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| grep -E '.*\| (main|alpha|beta|stable|lts)-[0-9]+\.[0-9]+\.[0-9]+-.*' \
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| grep -vE '(-pro)$')"
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echo "######## Full list of version(s) and their creation dates ########"
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echo
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echo "${versions_detected}" | awk '{printf "%5d %s\n", NR, $0}'
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# Filter minimum number of versions to keep, min age
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purge_versions="$(echo "${versions_detected}" \
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| tail -n+"${keep}")"
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| awk -v keep="${keep}" -v min_age="${min_age_date}" '{
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if (keep > 0) {
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keep = keep - 1
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next
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}
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if ($1 > min_age)
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next
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print $3
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}')"
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else
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# make sure we only accept dev versions
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# User-provided version list, make sure we only accept dev versions
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purge_versions="$(echo "${purge_versions}" | sed 's/ /\n/g' \
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| grep -E '(main|alpha|beta|stable|lts)-[0-9]+\.[0-9]+\.[0-9]+\-.*' \
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| grep -vE '(-pro)$')"
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keep=0
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fi
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source ci-automation/ci_automation_common.sh
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@ -71,7 +122,7 @@ function _garbage_collect_impl() {
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echo "(NOTE this is just a dry run since DRY_RUN=y)"
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echo
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fi
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echo "${purge_versions}" | awk -v keep="${keep}" '{if ($0 == "") next; printf "%5d %s\n", NR + keep - 1, $0}'
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echo "${purge_versions}" | awk '{if ($0 == "") next; printf "%5d %s\n", NR, $0}'
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echo
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echo
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@ -90,7 +141,7 @@ function _garbage_collect_impl() {
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local os_docker_vernum="$(vernum_to_docker_image_version "${FLATCAR_VERSION}")"
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# Remove container image tarballs and SDK tarball (if applicable)
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#
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# Keep in sync with "orphaned direcrories" clean-up below.
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local rmpat=""
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rmpat="${BUILDCACHE_PATH_PREFIX}/sdk/*/${os_vernum}/"
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rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/containers/${os_docker_vernum}/flatcar-sdk-*"
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@ -144,6 +195,54 @@ function _garbage_collect_impl() {
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fi
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done
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echo
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echo "########################################"
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echo
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echo Checking for orphaned directories
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echo
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local dir=""
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for dir in "sdk/amd64" \
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"containers" \
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"boards/amd64-usr" \
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"boards/arm64-usr" \
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"images/amd64" \
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"images/arm64" \
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"testing" \
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; do
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local fullpath="${BUILDCACHE_PATH_PREFIX}/${dir}"
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echo
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echo "## Processing '${fullpath}'"
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echo "---------------------------"
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local version=""
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for version in $($sshcmd "${BUILDCACHE_USER}@${BUILDCACHE_SERVER}" "ls -1 ${BUILDCACHE_PATH_PREFIX}/${dir}"); do
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if [ "${dir}" = "containers" ] && echo "${version/+/-}" | grep -qE '.*-github-.*'; then
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echo "Ignoring github CI SDK container in '${fullpath}/${version}'."
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echo "Github CI SDK artifacts are handled by 'garbage_collect_github_ci_sdk.sh'"
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echo " in a later step".
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continue
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fi
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if ! git tag -l | grep -q "${version/+/-}"; then
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local o_fullpath="${fullpath}/${version}"
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echo
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echo "## No tag '${version/+/-}' for orphan directory '${o_fullpath}'; removing."
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echo "## The following files will be removed ##"
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$sshcmd "${BUILDCACHE_USER}@${BUILDCACHE_SERVER}" \
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"ls -la ${o_fullpath} || true"
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if [ "$dry_run" != "y" ] ; then
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set -x
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$sshcmd "${BUILDCACHE_USER}@${BUILDCACHE_SERVER}" \
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"rm -rf ${o_fullpath} || true"
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set +x
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else
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echo "## (DRY_RUN=y so not doing anything) ##"
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fi
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echo
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fi
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done
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done
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echo
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echo "########################################"
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echo
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