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			286 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Bash
		
	
	
	
	
	
			
		
		
	
	
			286 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Bash
		
	
	
	
	
	
#!/bin/bash
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#
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# Copyright (c) 2021 The Flatcar Maintainers.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# >>> This file is supposed to be SOURCED from the repository ROOT. <<<
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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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#           Only artifacts older than this AND exceeding the builds to keep threshold
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#           will be removed.
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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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# Flatcar CI automation garbage collector.
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#  This script removes development (non-official) build artifacts:
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#   - SDK tarballs, build step containers, and vendor images on buildcache
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#   - SDK containers built via Github actions (e.g. from PRs).
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#      See https://github.com/flatcar/scripts/blob/main/.github/workflows/update-sdk.yaml
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#   - tags from the scripts repository
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#
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#  Garbage collection is based on development (non-official) version tags
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#   in the scripts repo. The newest 50 builds will be retained,
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#   all older builds will be purged (50 is the default, see OPTIONAL INPUT above).
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function garbage_collect() {
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    # Run a subshell, so the traps, environment changes and global
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    # variables are not spilled into the caller.
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    (
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        set -euo pipefail
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        _garbage_collect_impl "${@}"
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    )
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}
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# --
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function _garbage_collect_impl() {
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    local keep="${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="${PURGE_VERSIONS:-}"
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    # Set defaults; user-provided 'keep' has priority over default 'min_age_days'
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    if [ -n "${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 "${min_age_days}" ] ; then
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        min_age_days="14"
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    fi
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    local min_age_date="$(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 "${purge_versions}" ] ; then
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        # Generate a list "<timestamp> | <tagname>" from all repo tags that look like dev versions
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        local versions_detected="$(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 "${versions_detected}" \
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                            | awk -v keep="${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 $3
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                                }')"
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    else
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        # User-provided version list, make sure we only accept dev versions
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        purge_versions="$(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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    local sshcmd="$(gen_sshcmd)"
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    echo
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    echo "######## The following version(s) will be purged ########"
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    if [ "$dry_run" = "y" ] ; then
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        echo
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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 '{if ($0 == "") next; printf "%5d %s\n", NR, $0}'
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    echo
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    echo
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    local version
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    for version in ${purge_versions}; do
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        echo "--------------------------------------------"
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        echo
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        echo "#### Processing version '${version}' ####"
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        echo
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        git checkout "${version}" -- sdk_container/.repo/manifests/version.txt
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        source sdk_container/.repo/manifests/version.txt
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        # Assuming that the SDK build version also has the same OS version
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        local os_vernum="${FLATCAR_VERSION}"
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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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        # Keep in sync with "orphaned directories" 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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        rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/containers/${os_docker_vernum}/flatcar-packages-*"
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        rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/boards/*/${os_vernum}/"
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        rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/containers/${os_docker_vernum}/flatcar-images-*"
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        rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/images/*/${os_vernum}/"
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        rmpat="${rmpat} ${BUILDCACHE_PATH_PREFIX}/testing/${os_vernum}/"
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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 ${rmpat} || true"
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        if [ "$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 ${rmpat}"
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            set +x
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        else
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            echo "## (DRY_RUN=y so not doing anything) ##"
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        fi
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        # Remove container image directory if empty
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        #
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        rmpat="${BUILDCACHE_PATH_PREFIX}/containers/${os_docker_vernum}/"
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        echo "## Checking if container directory is empty and can be removed (it's OK if this fails) ##"
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        echo "## The following directory will be removed if below output is empty: '${rmpat}' ##"
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        $sshcmd "${BUILDCACHE_USER}@${BUILDCACHE_SERVER}" \
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            "ls -la ${rmpat} || true"
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        if [ "$dry_run" != "y" ] ; then
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            set -x
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            $sshcmd "${BUILDCACHE_USER}@${BUILDCACHE_SERVER}" \
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                "rmdir ${rmpat} || true"
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            set +x
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        else
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            echo "## (DRY_RUN=y so not doing anything) ##"
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        fi
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        # Remove git tag (local and remote)
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        #
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        echo "## The following TAG will be deleted: '${version}' ##"
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        if [ "$dry_run" != "y" ] ; then
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            set -x
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            git tag -d "${version}"
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            git push --delete origin "${version}"
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            set +x
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        else
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            echo "## (DRY_RUN=y so not doing anything) ##"
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        fi
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    done
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    echo
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    echo "########################################"
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    echo
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    echo    Checking for orphaned directories
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    echo
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    local dir=""
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    for dir in  "sdk/amd64" \
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                "containers" \
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                "boards/amd64-usr" \
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                "boards/arm64-usr" \
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                "images/amd64" \
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                "images/arm64" \
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                "testing" \
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                ; do
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        local fullpath="${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 ${o_fullpath} || true"
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                    set +x
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                else
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                    echo "## (DRY_RUN=y so not doing anything) ##"
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                fi
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                echo
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            fi
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         done
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    done
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    echo
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    echo "########################################"
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    echo
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    echo    Running cloud garbage collector
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    echo
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    local mantle_ref
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    mantle_ref=$(cat sdk_container/.repo/manifests/mantle-container)
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    docker run --pull always --rm --net host \
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      --env AZURE_AUTH_CREDENTIALS --env AZURE_PROFILE \
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      --env AWS_ACCESS_KEY_ID --env AWS_SECRET_ACCESS_KEY \
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      --env AWS_CREDENTIALS \
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      --env DIGITALOCEAN_TOKEN_JSON \
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      --env EQUINIXMETAL_KEY --env EQUINIXMETAL_PROJECT \
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      --env GCP_JSON_KEY \
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      --env VMWARE_ESX_CREDS \
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      --env BRIGHTBOX_CLIENT_ID --env BRIGHTBOX_CLIENT_SECRET \
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      --env AKAMAI_TOKEN \
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      -w /work -v "$PWD":/work "${mantle_ref}" /work/ci-automation/garbage_collect_cloud.sh
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    echo
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    echo "#############################################"
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    echo
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    echo    Running Github CI SDK garbage collector
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    echo
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    source ci-automation/garbage_collect_github_ci_sdk.sh
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    garbage_collect_github_ci 1 "${min_age_days}"
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    echo
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    echo "########################################"
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    echo
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    echo    Running Release Artifacts cache garbage collector
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    echo
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    source ci-automation/garbage_collect_releases.sh
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    garbage_collect_releases
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}
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# --
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