269 lines
9.7 KiB
Bash
Executable File
269 lines
9.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo 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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PREFIX=${TALLYNOTE_INSTALL_PREFIX:-/opt/tallynote}
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DATA_DIR=${TALLYNOTE_DATA_DIR:-/var/lib/tallynote}
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REQUEST_FILE="$DATA_DIR/update-request.json"
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CURRENT_LINK="$PREFIX/current"
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STATE_FILE="$PREFIX/.update-state"
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SERVICE_NAME=${TALLYNOTE_SERVICE_NAME:-tallynote.service}
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HOST=${TALLYNOTE_HOST:-127.0.0.1}
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PORT=${TALLYNOTE_PORT:-3000}
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HEALTH_HOST=$HOST
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if [[ "$HEALTH_HOST" == 0.0.0.0 ]]; then HEALTH_HOST=127.0.0.1; fi
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if [[ "$HEALTH_HOST" == :: ]]; then HEALTH_HOST=::1; fi
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if [[ "$HEALTH_HOST" == *:* && "$HEALTH_HOST" != \[* ]]; then HEALTH_HOST="[$HEALTH_HOST]"; fi
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die() { printf 'tallynote update runner: %s\n' "$*" >&2; exit 1; }
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[[ ${EUID:-$(id -u)} -eq 0 ]] || die 'must run as root'
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[[ -f "$REQUEST_FILE" || -f "$STATE_FILE" ]] || exit 0
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[[ -L "$CURRENT_LINK" ]] || die 'current release link is missing'
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old_target=$(readlink -f -- "$CURRENT_LINK")
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[[ "$old_target" == "$PREFIX/releases/"* && -d "$old_target" ]] || die 'current release target is invalid'
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request_operation='apply'
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if [[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]]; then
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request_operation=$(sed -n 's/.*"operation"[[:space:]]*:[[:space:]]*"\(download\|apply\)".*/\1/p' "$REQUEST_FILE" | head -n 1)
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[[ "$request_operation" == download || "$request_operation" == apply ]] || request_operation='apply'
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fi
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# Downloading is intentionally handled while the main service remains up.
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# The CLI persists the validated payload under the root-owned workspace and
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# leaves the job staged for a later apply request.
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if [[ "$request_operation" == download ]]; then
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node_bin="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$node_bin" ]] || node_bin=$(command -v node || true)
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[[ -n "$node_bin" ]] || die 'node runtime not found'
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cli="$CURRENT_LINK/dist/server/cli/update.js"
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[[ -f "$cli" ]] || die 'update CLI not found in current release'
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"$node_bin" "$cli" --request-file "$REQUEST_FILE" || exit $?
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rm -f -- "$REQUEST_FILE"
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exit 0
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fi
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was_active=0
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if systemctl is-active --quiet "$SERVICE_NAME"; then was_active=1; fi
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# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap below
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restore_initial_service() {
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local result=$?
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if (( was_active )); then systemctl start "$SERVICE_NAME" || true; fi
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return "$result"
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}
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trap restore_initial_service EXIT
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systemctl stop "$SERVICE_NAME"
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job_id=''
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if [[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]]; then
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job_id=$(sed -n 's/.*"jobId"[[:space:]]*:[[:space:]]*"\([0-9a-f-]*\)".*/\1/p' "$REQUEST_FILE" | head -n 1)
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fi
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old_node="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$old_node" ]] || old_node=$(command -v node || true)
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switched=0
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handled=0
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write_update_state() {
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local phase=$1 temporary
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temporary="$PREFIX/.update-state-$$-${RANDOM}.tmp"
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[[ ! -e "$temporary" && ! -L "$temporary" ]] || return 1
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printf 'job_id=%s\nold_target=%s\nphase=%s\n' "$job_id" "$old_target" "$phase" > "$temporary"
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chmod 600 "$temporary"
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mv -Tf -- "$temporary" "$STATE_FILE"
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}
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clear_update_state() {
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[[ ! -L "$STATE_FILE" ]] || return 1
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rm -f -- "$STATE_FILE"
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}
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finalize_state_job() {
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local node=$1 status=$2 state_job=$3
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[[ "$state_job" =~ ^[0-9a-f-]{36}$ && -n "$node" ]] || return 1
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[[ -f "$CURRENT_LINK/dist/server/cli/update.js" ]] || return 1
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"$node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$state_job" --finalize-status "$status" --message '新版本健康检查失败，已恢复上一版本' >/dev/null 2>&1
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}
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recover_stale_state() {
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local state_job state_old state_phase current_target recovery_node rollback_link state_mode state_uid
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[[ -f "$STATE_FILE" && ! -L "$STATE_FILE" ]] || die 'update state file is invalid'
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state_uid=$(stat -c '%u' "$STATE_FILE" 2>/dev/null || stat -f '%u' "$STATE_FILE")
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state_mode=$(stat -c '%a' "$STATE_FILE" 2>/dev/null || stat -f '%Lp' "$STATE_FILE")
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[[ "$state_uid" == 0 && "$state_mode" =~ ^[0-7]+$ && $((8#$state_mode & 077)) -eq 0 ]] || die 'update state file permissions are invalid'
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state_job=$(sed -n 's/^job_id=//p' "$STATE_FILE" | head -n 1)
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state_old=$(sed -n 's/^old_target=//p' "$STATE_FILE" | head -n 1)
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state_phase=$(sed -n 's/^phase=//p' "$STATE_FILE" | head -n 1)
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[[ "$state_job" =~ ^[0-9a-f-]{36}$ ]] || die 'update state job id is invalid'
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[[ "$state_old" == "$PREFIX/releases/"* && -d "$state_old" && ! -L "$state_old" ]] || die 'update state target is invalid'
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current_target=$(readlink -f -- "$CURRENT_LINK" 2>/dev/null || true)
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if [[ "$state_phase" == finalizing && "$current_target" != "$state_old" ]]; then
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recovery_node="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$recovery_node" ]] || recovery_node=$(command -v node || true)
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for _ in 1 2 3; do
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if finalize_state_job "$recovery_node" completed "$state_job"; then
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rm -f -- "$REQUEST_FILE" 2>/dev/null || true
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clear_update_state || true
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return 10
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fi
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sleep 1
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done
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return 1
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fi
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if [[ "$current_target" != "$state_old" ]]; then
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rollback_link="$PREFIX/.current-recovery-$$-${RANDOM}.tmp"
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[[ ! -e "$rollback_link" && ! -L "$rollback_link" ]] || return 1
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ln -s -- "$state_old" "$rollback_link" || return 1
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if ! mv -Tf -- "$rollback_link" "$CURRENT_LINK"; then
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rm -f -- "$rollback_link" 2>/dev/null || true
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return 1
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fi
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recovery_node="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$recovery_node" ]] || recovery_node=$(command -v node || true)
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if ! finalize_state_job "$recovery_node" failed "$state_job"; then
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# If the original queue is still present, retry it from the restored old
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# release; a crash before the CLI wrote its job row is recoverable this
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# way. Without a queue there is no safe operation to replay.
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if [[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]]; then
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clear_update_state || true
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return 0
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fi
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return 1
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fi
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rm -f -- "$REQUEST_FILE" 2>/dev/null || true
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clear_update_state || true
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return 11
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fi
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clear_update_state || true
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return 0
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}
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if [[ -e "$STATE_FILE" ]]; then
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recovery_result=0
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set +e
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recover_stale_state
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recovery_result=$?
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set -e
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case "$recovery_result" in
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10) if (( was_active )); then systemctl start "$SERVICE_NAME" || true; fi; exit 0 ;;
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11) if (( was_active )); then systemctl start "$SERVICE_NAME" || true; fi; exit 1 ;;
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0) : ;;
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*) if (( was_active )); then systemctl start "$SERVICE_NAME" || true; fi; exit 1 ;;
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esac
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fi
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[[ -f "$REQUEST_FILE" && ! -L "$REQUEST_FILE" ]] || exit 0
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rollback_current() {
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local current_target rollback_link
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current_target=$(readlink -f -- "$CURRENT_LINK" 2>/dev/null || true)
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[[ "$current_target" == "$old_target" ]] && return 0
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rollback_link="$PREFIX/.current-rollback-$$-${RANDOM}.tmp"
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[[ ! -e "$rollback_link" && ! -L "$rollback_link" ]] || return 1
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ln -s -- "$old_target" "$rollback_link" || return 1
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if ! mv -Tf -- "$rollback_link" "$CURRENT_LINK"; then
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rm -f -- "$rollback_link" 2>/dev/null || true
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return 1
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fi
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switched=0
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}
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finalize_failed_job() {
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[[ "$job_id" =~ ^[0-9a-f-]{36}$ ]] || return 0
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[[ -n "$old_node" && -f "$CURRENT_LINK/dist/server/cli/update.js" ]] || return 0
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"$old_node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$job_id" --finalize-status failed --message '新版本健康检查失败，已恢复上一版本' >/dev/null 2>&1
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}
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finalize_completed_job() {
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[[ "$job_id" =~ ^[0-9a-f-]{36}$ ]] || return 0
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[[ -n "$final_node" ]] || return 1
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"$final_node" "$CURRENT_LINK/dist/server/cli/update.js" --finalize-job "$job_id" --finalize-status completed >/dev/null 2>&1
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}
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# shellcheck disable=SC2329 # invoked indirectly by the EXIT trap below
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cleanup_after_update() {
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local result=$? rollback_ok=1
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if (( result != 0 && handled == 0 )); then
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if ! rollback_current; then rollback_ok=0; fi
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if (( rollback_ok == 1 && switched == 0 )); then
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if finalize_failed_job; then
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rm -f -- "$REQUEST_FILE"
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clear_update_state || true
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fi
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fi
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fi
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if (( was_active )); then
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systemctl start "$SERVICE_NAME" || true
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else
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systemctl stop "$SERVICE_NAME" || true
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fi
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return "$result"
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}
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trap cleanup_after_update EXIT
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write_update_state running || exit 1
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node_bin="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$node_bin" ]] || node_bin=$(command -v node || true)
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[[ -n "$node_bin" ]] || die 'node runtime not found'
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cli="$CURRENT_LINK/dist/server/cli/update.js"
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[[ -f "$cli" ]] || die 'update CLI not found in current release'
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set +e
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"$node_bin" "$cli" --request-file "$REQUEST_FILE" --defer-completion
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update_result=$?
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set -e
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if (( update_result != 0 )); then
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exit "$update_result"
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fi
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if [[ "$(readlink -f -- "$CURRENT_LINK" 2>/dev/null || true)" != "$old_target" ]]; then
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switched=1
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fi
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write_update_state health-check || exit 1
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systemctl start "$SERVICE_NAME"
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healthy=0
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for _ in $(seq 1 30); do
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if curl --proto '=http' --max-time 2 --silent --show-error "http://$HEALTH_HOST:$PORT/health" >/dev/null 2>&1; then healthy=1; break; fi
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sleep 1
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done
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if (( healthy == 0 )); then
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systemctl stop "$SERVICE_NAME" || true
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rollback_current || die '无法恢复上一版本链接'
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if (( was_active )); then systemctl start "$SERVICE_NAME" || true; fi
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if ! finalize_failed_job; then
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exit 1
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fi
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rm -f -- "$REQUEST_FILE"
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clear_update_state || true
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handled=1
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trap - EXIT
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exit 1
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fi
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# Preserve an operator's intentionally stopped service after validating the
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# new release in a temporary start.
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if (( was_active == 0 )); then
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systemctl stop "$SERVICE_NAME"
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fi
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write_update_state finalizing || exit 1
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final_node="$CURRENT_LINK/runtime/bin/node"
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[[ -x "$final_node" ]] || final_node=$(command -v node || true)
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if [[ "$job_id" =~ ^[0-9a-f-]{36}$ ]]; then
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finalized=0
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for _ in 1 2 3; do
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if finalize_completed_job; then finalized=1; break; fi
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sleep 1
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done
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(( finalized == 1 )) || exit 1
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fi
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rm -f -- "$REQUEST_FILE"
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clear_update_state || true
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handled=1
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trap - EXIT
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exit 0
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