固化部署体检与备份合同刷新（08-02-deployment-preflight-backup-contract-refresh）
这个提交包含在：
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#!/usr/bin/env bash
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set -euo pipefail
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PATH="/usr/sbin:/usr/bin:/sbin:/bin"
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export PATH
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umask 077
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unset BASH_ENV ENV CDPATH GLOBIGNORE LD_PRELOAD LD_LIBRARY_PATH PYTHONPATH NODE_OPTIONS
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SERVICES=(
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hyb-oa-automatic-backup-daily.service
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hyb-oa-automatic-backup-watchdog.service
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hyb-oa-automatic-backup-drill-reminder.service
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hyb-oa-warch3-ops.service
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)
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TIMERS=(
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hyb-oa-automatic-backup-daily.timer
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hyb-oa-automatic-backup-watchdog.timer
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hyb-oa-automatic-backup-drill-reminder.timer
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hyb-oa-warch3-ops.timer
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)
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CONTRACT_SERVICE="hyb-oa-automatic-backup-daily.service"
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DROPIN_NAME="20-active-build.conf"
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ROOT_PREFIX=""
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TEST_MODE=0
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fail() {
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local code="$1"
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local category="$2"
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echo "[deployment-contract-refresh][FAIL] category=${category}" >&2
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exit "$code"
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}
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if [[ "$(id -u)" != "0" ]]; then
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test_root="${HYB_CONTRACT_REFRESH_TEST_ROOT:-}"
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if [[ "$test_root" =~ ^/tmp/[A-Za-z0-9._/-]+$ && "$test_root" != */ \
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&& "$test_root" != *"//"* && "/$test_root/" != *"/../"* ]]; then
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TEST_MODE=1
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ROOT_PREFIX="$test_root"
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PATH="$test_root/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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export PATH
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else
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fail 70 root_required
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fi
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fi
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UNIT_ROOT="${ROOT_PREFIX}/etc/systemd/system"
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LOCK_FILE="${ROOT_PREFIX}/run/lock/hyb-oa-deployment-contract-refresh.lock"
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EXPECTED_TARGET="${ROOT_PREFIX}/usr/local/sbin/hyb-oa-deployment-contract-refresh"
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need_command() {
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command -v "$1" >/dev/null 2>&1 || fail 70 runtime_prerequisite_missing
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}
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for required_command in systemctl docker install mktemp mv mkdir chmod flock stat; do
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need_command "$required_command"
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done
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validate_self() {
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if [[ "$TEST_MODE" == "0" ]]; then
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[[ "$0" == "$EXPECTED_TARGET" && -f "$EXPECTED_TARGET" && ! -L "$EXPECTED_TARGET" \
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&& "$(stat -c %u:%g:%a "$EXPECTED_TARGET")" == "0:0:755" ]] \
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|| fail 70 refresh_program_integrity_invalid
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else
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[[ -f "$0" && ! -L "$0" ]] || fail 70 refresh_program_integrity_invalid
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fi
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}
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systemctl_value() {
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local unit="$1"
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local property="$2"
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systemctl show "$unit" -p "$property" --value
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}
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unit_environment_value() {
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local unit="$1"
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local wanted="$2"
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local entry value=""
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for entry in $(systemctl_value "$unit" Environment); do
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if [[ "${entry%%=*}" == "$wanted" ]]; then
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value="${entry#*=}"
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fi
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done
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[[ -n "$value" ]] || return 1
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printf '%s' "$value"
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}
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validate_fixed_units() {
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local unit fragment owner
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for unit in "${SERVICES[@]}"; do
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[[ "$(systemctl_value "$unit" LoadState)" == "loaded" ]] \
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|| fail 70 service_not_loaded
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fragment="$(systemctl_value "$unit" FragmentPath)"
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[[ -n "$fragment" ]] || fail 70 service_fragment_missing
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if [[ "$TEST_MODE" == "0" ]]; then
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[[ "$fragment" == /etc/systemd/system/* && -f "$fragment" && ! -L "$fragment" ]] \
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|| fail 70 service_fragment_invalid
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owner="$(stat -c %u "$fragment")"
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[[ "$owner" == "0" ]] || fail 70 service_fragment_not_root_owned
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fi
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done
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}
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resolve_active_build() {
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local project
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local -a servers=()
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project="$(unit_environment_value "$CONTRACT_SERVICE" COMPOSE_PROJECT_NAME)" \
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|| fail 70 compose_project_missing
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[[ "$project" =~ ^[a-z0-9][a-z0-9_-]*$ ]] || fail 70 compose_project_invalid
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mapfile -t servers < <(docker ps \
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--filter "label=com.docker.compose.project=$project" \
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--filter "label=com.docker.compose.service=server" \
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--format '{{.ID}}')
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[[ "${#servers[@]}" -eq 1 && -n "${servers[0]}" ]] \
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|| fail 70 active_server_not_unique
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ACTIVE_BUILD="$(docker inspect -f '{{range .Config.Env}}{{println .}}{{end}}' "${servers[0]}" \
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| sed -n 's/^BUILD_SHA=//p' | tail -n 1)"
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ACTIVE_BUILD="${ACTIVE_BUILD,,}"
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[[ "$ACTIVE_BUILD" =~ ^[0-9a-f]{40,64}$ ]] || fail 70 active_build_invalid
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ACTIVE_FRONTEND_BUILD="${ACTIVE_BUILD:0:12}"
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}
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write_build_dropin() {
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local service="$1"
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local dropin_dir="$UNIT_ROOT/${service}.d"
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local target="$dropin_dir/$DROPIN_NAME"
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local temporary
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if [[ "$TEST_MODE" == "0" ]]; then
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install -d -o root -g root -m 0755 "$dropin_dir"
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else
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mkdir -p "$dropin_dir"
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chmod 0755 "$dropin_dir"
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fi
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temporary="$(mktemp "$dropin_dir/.${DROPIN_NAME}.XXXXXX")"
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{
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printf '[Service]\n'
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printf 'Environment=BUILD_SHA=%s\n' "$ACTIVE_BUILD"
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printf 'Environment=VITE_BUILD_SHA=%s\n' "$ACTIVE_FRONTEND_BUILD"
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} >"$temporary"
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chmod 0644 "$temporary"
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if [[ "$TEST_MODE" == "0" ]]; then
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chown root:root "$temporary"
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fi
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mv -f -- "$temporary" "$target"
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}
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verify_builds() {
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local service service_build service_frontend_build
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for service in "${SERVICES[@]}"; do
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service_build="$(unit_environment_value "$service" BUILD_SHA)" \
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|| fail 42 unit_build_not_refreshed
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service_frontend_build="$(unit_environment_value "$service" VITE_BUILD_SHA)" \
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|| fail 42 unit_build_not_refreshed
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[[ "$service_build" == "$ACTIVE_BUILD" \
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&& "$service_frontend_build" == "$ACTIVE_FRONTEND_BUILD" ]] \
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|| fail 42 unit_build_not_refreshed
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done
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}
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verify_timers() {
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local timer
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for timer in "${TIMERS[@]}"; do
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[[ "$(systemctl is-enabled "$timer")" == "enabled" \
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&& "$(systemctl is-active "$timer")" == "active" ]] \
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|| fail 43 timer_not_active
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done
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}
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probe() {
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validate_self
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validate_fixed_units
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resolve_active_build
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echo "[deployment-contract-refresh][PASS] probe"
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}
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refresh() {
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validate_self
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validate_fixed_units
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resolve_active_build
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mkdir -p "$(dirname "$LOCK_FILE")"
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exec 9>"$LOCK_FILE"
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flock -n 9 || fail 42 refresh_already_running
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local service
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for service in "${SERVICES[@]}"; do
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write_build_dropin "$service"
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done
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systemctl daemon-reload
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verify_builds
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verify_timers
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echo "[deployment-contract-refresh][PASS] refreshed"
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}
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[[ "$#" -eq 0 ]] || fail 64 unsupported_forced_command
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case "${SSH_ORIGINAL_COMMAND:-}" in
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probe) probe ;;
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refresh) refresh ;;
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*) fail 64 unsupported_forced_command ;;
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esac
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