Hermes
1cc112f1e4
The host-side updater only backed up code + data/, leaving trigger.json and result.json unarchived. After a failed update, operators had to reconstruct 'what was being attempted' by joining timestamps across files. Now the backup captures both files into a 'update-state/' subdir alongside code + data backups, keyed by from-version. - New `backup_update_state()` function in dashcaddy-update.sh: idempotent, tolerates absent files (cleans up empty subdir), tolerates chattr +i (unlock/copy/relock). - Wired into main() right after `backup_data_dir`, before `cleanup_old_backups`. - Deliberately does NOT auto-restore trigger.json on rollback — the rollback handler reads a fresh trigger.json written by the operator/container; restoring the previous attempt's trigger would clobber the active rollback request. Backups are read-only forensic evidence. - New `dashcaddy-api/scripts/test-dashcaddy-update-backup.sh` (14 assertions, 5 test groups): both-files-present, partial-present, no-files-present, idempotency, main() flow ordering. All 14 pass. - Synced the duplicate at `dashcaddy-api/scripts/dashcaddy-update.sh` (md5-identical to scripts/dashcaddy-update.sh). Tests: 1214/1214 pass (zero change). Lint: 150 warnings, all pre-existing in untouched files (zero new warnings introduced).
523 lines
20 KiB
Bash
Executable File
523 lines
20 KiB
Bash
Executable File
#!/usr/bin/env bash
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# DashCaddy Host-Side Updater
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# Triggered by systemd path unit when the container writes trigger.json.
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# Reads the trigger, backs up current API + data/, copies new files, rebuilds container.
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# Writes result.json so the new container knows the outcome.
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#
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# This runs on the HOST, outside the container.
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#
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# Channel selection: by default only "stable" releases are applied. Set
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# ALLOW_PRERELEASE=true in /opt/dashcaddy/updates/channel.conf to opt in to
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# prerelease/beta/rc channels. Useful for staging hosts, not production.
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set -euo pipefail
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readonly UPDATES_DIR="/opt/dashcaddy/updates"
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readonly TRIGGER_FILE="${UPDATES_DIR}/trigger.json"
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readonly RESULT_FILE="${UPDATES_DIR}/result.json"
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readonly BACKUPS_DIR="${UPDATES_DIR}/backups"
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readonly CONTAINER_NAME="dashcaddy-api"
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readonly IMAGE_TAG="dashcaddy-dashcaddy-api:latest"
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readonly MAX_BACKUPS=3
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readonly HEALTH_TIMEOUT=60
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readonly CHANNEL_CONF="${UPDATES_DIR}/channel.conf"
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# Data directory backup — stored alongside code backups so everything rolls back together
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readonly DATA_SOURCE_DIR="/opt/dashcaddy/dashcaddy-api/data"
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readonly DATA_BACKUP_PREFIX="data-backup"
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# Updater state (trigger.json / result.json) backup — keeps the audit trail
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# (what version we were attempting, what the previous update's outcome was) tied
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# to the same versioned backup directory as code + data. After a failed update,
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# operators can inspect what was attempted without correlating timestamps, and
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# rollback tooling can reconstruct a "what just happened" view of the update
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# state machine. NOTE: we do NOT auto-restore trigger.json on rollback — the
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# rollback handler reads a fresh trigger.json written by the operator/container;
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# restoring the previous attempt's trigger would clobber the active rollback
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# request. Backups here are read-only forensic evidence.
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readonly UPDATE_STATE_BACKUP_PREFIX="update-state"
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readonly TRIGGER_PROCESSING="${TRIGGER_FILE}.processing"
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log() { echo "[dashcaddy-update] $(date '+%Y-%m-%d %H:%M:%S') $*"; }
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# Decide if a given release channel is acceptable on this host.
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# Returns 0 (accept) or 1 (reject) and logs the reason.
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channel_allowed() {
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local channel="$1"
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local allow_prerelease="false"
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if [[ -f "$CHANNEL_CONF" ]]; then
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# shellcheck disable=SC1090
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source "$CHANNEL_CONF"
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allow_prerelease="${ALLOW_PRERELEASE:-false}"
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fi
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case "${channel,,}" in
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stable|"")
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return 0
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;;
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prerelease|beta|rc|alpha)
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if [[ "${allow_prerelease,,}" == "true" ]]; then
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log "Channel '${channel}' accepted (ALLOW_PRERELEASE=true in ${CHANNEL_CONF})"
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return 0
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else
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log "Channel '${channel}' rejected — set ALLOW_PRERELEASE=true in ${CHANNEL_CONF} to accept"
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return 1
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fi
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;;
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*)
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log "Channel '${channel}' rejected — unknown channel"
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return 1
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;;
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esac
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}
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write_result() {
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local success="$1" version="$2" duration="$3"
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shift 3
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local error="${1:-}"
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if [[ "$success" == "true" ]]; then
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cat > "$RESULT_FILE" <<EOF
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{
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"success": true,
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"version": "${version}",
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"duration": ${duration},
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"timestamp": "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
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}
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EOF
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else
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cat > "$RESULT_FILE" <<EOF
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{
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"success": false,
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"version": "${version}",
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"duration": ${duration},
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"error": "${error}",
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"timestamp": "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
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}
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EOF
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fi
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}
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cleanup_old_backups() {
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local count
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count=$(find "$BACKUPS_DIR" -maxdepth 1 -mindepth 1 -type d 2>/dev/null | wc -l)
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if (( count > MAX_BACKUPS )); then
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log "Cleaning old backups (${count} > ${MAX_BACKUPS})"
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find "$BACKUPS_DIR" -maxdepth 1 -mindepth 1 -type d -printf '%T+ %p\n' \
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| sort | head -n $(( count - MAX_BACKUPS )) | cut -d' ' -f2- \
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| xargs rm -rf
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fi
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}
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# ── Data backup (rsync for efficiency + permissions) ──────────────────────────
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backup_data_dir() {
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local backup_dir="$1"
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if [[ -d "$DATA_SOURCE_DIR" ]]; then
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log "Backing up data/ to ${backup_dir}/${DATA_BACKUP_PREFIX}/"
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mkdir -p "${backup_dir}/${DATA_BACKUP_PREFIX}"
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rsync -a --delete "$DATA_SOURCE_DIR/" "${backup_dir}/${DATA_BACKUP_PREFIX}/" 2>/dev/null \
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|| cp -a "$DATA_SOURCE_DIR" "${backup_dir}/${DATA_BACKUP_PREFIX}"
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log "Data backup complete ($(du -sh "${backup_dir}/${DATA_BACKUP_PREFIX}" 2>/dev/null | cut -f1))"
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else
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log "WARNING: Data source dir $DATA_SOURCE_DIR not found — skipping data backup"
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fi
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}
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# ── Updater state backup (trigger.json.processing + result.json) ─────────────
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# Captures what was being attempted + the last result so post-mortem can answer
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# "why did this fail" without joining timestamps across files. Tolerates absent
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# files (first-ever run) and locked files (chattr +i). Idempotent — re-running
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# overwrites the previous backup.
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backup_update_state() {
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local backup_dir="$1"
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local state_dir="${backup_dir}/${UPDATE_STATE_BACKUP_PREFIX}"
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mkdir -p "$state_dir"
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local copied=0
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for src in "$TRIGGER_PROCESSING" "$RESULT_FILE"; do
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if [[ -f "$src" ]]; then
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# Unlock temporarily if immutable, copy, re-lock.
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local was_locked=false
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if lsattr -d "$src" 2>/dev/null | awk '{exit !($1 ~ /i/)}'; then
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was_locked=true
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chattr -i "$src" 2>/dev/null || true
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fi
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cp -f "$src" "${state_dir}/$(basename "$src")" 2>/dev/null && copied=$(( copied + 1 ))
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if [[ "$was_locked" == "true" ]]; then
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chattr +i "$src" 2>/dev/null || true
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fi
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fi
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done
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if (( copied > 0 )); then
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log "Update-state backup: ${copied} file(s) -> ${state_dir}"
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else
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log "Update-state backup: nothing to back up (no trigger/result files)"
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rmdir "$state_dir" 2>/dev/null || true
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fi
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}
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# ── Data restore ──────────────────────────────────────────────────────────────
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restore_data_dir() {
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local backup_dir="$1"
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local data_backup="${backup_dir}/${DATA_BACKUP_PREFIX}"
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if [[ -d "$data_backup" ]]; then
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log "Restoring data/ from backup..."
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rsync -a --delete "$data_backup/" "$DATA_SOURCE_DIR/" 2>/dev/null \
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|| cp -a "$data_backup" "$DATA_SOURCE_DIR"
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log "Data restored successfully"
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else
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log "WARNING: No data backup found at ${data_backup} — data/ not restored"
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fi
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}
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wait_for_health() {
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local port="${1:-3001}"
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local timeout="$HEALTH_TIMEOUT"
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local elapsed=0
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log "Waiting for health check (timeout: ${timeout}s)..."
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while (( elapsed < timeout )); do
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if curl -fsSL --max-time 3 "http://localhost:${port}/health" &>/dev/null; then
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log "Health check passed after ${elapsed}s"
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return 0
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fi
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sleep 2
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elapsed=$(( elapsed + 2 ))
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done
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log "Health check FAILED after ${timeout}s"
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return 1
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}
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# ── Shared rollback: restore code + data ────────────────────────────────────
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rollback_restore() {
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local backup_dir="$1"
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log "Rolling back: restoring code files..."
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for item in "$backup_dir"/*.js "$backup_dir"/package.json "$backup_dir"/package-lock.json "$backup_dir"/Dockerfile "$backup_dir"/openapi.yaml "$backup_dir"/VERSION; do
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[[ -f "$item" ]] && cp -f "$item" "$api_source_dir/" 2>/dev/null || true
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done
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if [[ -d "$backup_dir/routes" ]]; then
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rm -rf "$api_source_dir/routes"
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cp -rf "$backup_dir/routes" "$api_source_dir/routes"
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fi
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if [[ -d "$backup_dir/src" ]]; then
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rm -rf "$api_source_dir/src"
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cp -rf "$backup_dir/src" "$api_source_dir/src"
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fi
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if [[ -d "$backup_dir/dns-providers" ]]; then
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rm -rf "$api_source_dir/dns-providers"
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cp -rf "$backup_dir/dns-providers" "$api_source_dir/dns-providers"
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fi
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restore_data_dir "$backup_dir"
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}
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# ── Deployment mode ───────────────────────────────────────────────────────────
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# Reproduce the SAME container the install created so an auto-update keeps every
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# volume + env var (docker socket, Caddyfile, config/credentials, updates mount),
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# not a minimal subset. Standard installs use docker-compose (compose file in the
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# api source dir); the publish/dev host uses /opt/dashcaddy/start.sh; otherwise a
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# bare docker run is the last resort. build_image() and restart_container() both
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# honor the detected mode so build and run stay consistent.
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deploy_mode() {
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if [[ -f "$api_source_dir/docker-compose.yml" || -f "$api_source_dir/compose.yml" || -f "$api_source_dir/compose.yaml" ]]; then
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echo compose
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elif [[ -x /opt/dashcaddy/start.sh ]]; then
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echo startsh
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else
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echo run
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fi
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}
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# Build the API image using whatever the install is wired for. Returns the build
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# command's exit status so callers can detect failure.
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build_image() {
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cd "$api_source_dir" || return 1
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case "$(deploy_mode)" in
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compose) docker compose build 2>&1 || docker-compose build 2>&1 ;;
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*) docker build -t "$IMAGE_TAG" . 2>&1 ;;
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esac
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}
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# ── Shared container restart — recreate with the full, install-defined spec ───
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# Recreates (rm + run / compose up) so new code AND new env vars take effect.
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restart_container() {
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cd "$api_source_dir" 2>/dev/null || true
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case "$(deploy_mode)" in
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compose)
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log "Recreating container via docker compose (full compose spec)..."
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docker compose up -d 2>&1 || docker-compose up -d 2>&1
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;;
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startsh)
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log "Recreating container via /opt/dashcaddy/start.sh (full container spec)..."
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bash /opt/dashcaddy/start.sh
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;;
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*)
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log "Recreating container via minimal docker run (fallback)..."
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docker rm -f "$CONTAINER_NAME" 2>/dev/null || true
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docker run -d --restart unless-stopped --name "$CONTAINER_NAME" \
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-p 127.0.0.1:3001:3001 \
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-v /opt/dashcaddy/dashcaddy-api/data:/app/data \
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-e SERVICES_FILE=/app/data/services.json \
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"$IMAGE_TAG"
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;;
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esac
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log "Container recreated"
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}
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# ── Code-only restore (used after failed build when data hasn't changed yet) ──
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code_restore() {
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local backup_dir="$1"
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log "Restoring code files..."
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for item in "$backup_dir"/*.js "$backup_dir"/package.json "$backup_dir"/package-lock.json "$backup_dir"/Dockerfile "$backup_dir"/openapi.yaml "$backup_dir"/VERSION; do
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[[ -f "$item" ]] && cp -f "$item" "$api_source_dir/" 2>/dev/null || true
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done
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if [[ -d "$backup_dir/routes" ]]; then
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rm -rf "$api_source_dir/routes"
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cp -rf "$backup_dir/routes" "$api_source_dir/routes"
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fi
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if [[ -d "$backup_dir/src" ]]; then
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rm -rf "$api_source_dir/src"
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cp -rf "$backup_dir/src" "$api_source_dir/src"
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fi
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if [[ -d "$backup_dir/dns-providers" ]]; then
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rm -rf "$api_source_dir/dns-providers"
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cp -rf "$backup_dir/dns-providers" "$api_source_dir/dns-providers"
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fi
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}
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main() {
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local start_time
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start_time=$(date +%s)
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# 1. Read trigger
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if [[ ! -f "$TRIGGER_FILE" ]]; then
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log "No trigger file found — nothing to do"
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exit 0
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fi
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# Parse trigger.json (uses python3 which is available on all supported distros)
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local action version from_version staging_dir api_source_dir commit channel
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local frontend_staging_dir frontend_target_dir
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action=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}'))['action'])")
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version=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}'))['version'])")
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from_version=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}'))['fromVersion'])")
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staging_dir=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}'))['stagingDir'])")
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api_source_dir=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}'))['apiSourceDir'])")
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commit=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}')).get('commit') or '')")
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frontend_staging_dir=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}')).get('frontendStagingDir') or '')")
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frontend_target_dir=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}')).get('frontendTargetDir') or '')")
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channel=$(python3 -c "import json; print(json.load(open('${TRIGGER_FILE}')).get('channel') or 'stable')")
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# Handle action=rollback (no new version to deploy)
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local to_version="${version}"
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log "=== ${action^^}: v${from_version} -> v${to_version} (channel: ${channel}) ==="
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log "Staging: ${staging_dir}"
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log "API source: ${api_source_dir}"
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# Consume the trigger immediately so we don't re-process on failure
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mv "$TRIGGER_FILE" "${TRIGGER_FILE}.processing"
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# Channel gate: refuse to apply prereleases unless explicitly opted-in.
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# Rollbacks always allowed (no new release channel involved).
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if [[ "${action}" != "rollback" ]] && ! channel_allowed "${channel}"; then
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write_result "false" "$to_version" "0" "Channel '${channel}' not allowed on this host"
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rm -f "${TRIGGER_FILE}.processing"
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exit 1
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fi
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# ── Handle rollback ────────────────────────────────────────────────────────
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if [[ "$action" == "rollback" ]]; then
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local backup_dir="${BACKUPS_DIR}/${version}"
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if [[ ! -d "$backup_dir" ]]; then
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log "ERROR: No backup found for version ${version}"
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write_result "false" "$version" "$(( $(date +%s) - start_time ))" "No backup found for version ${version}"
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rm -f "${TRIGGER_FILE}.processing"
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exit 1
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fi
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log "Performing rollback to v${version}..."
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rollback_restore "$backup_dir"
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# Rebuild old code
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log "Rebuilding container..."
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build_image 2>&1 | tail -3 || true
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restart_container
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wait_for_health || log "WARNING: Health check failed after rollback"
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write_result "true" "$version" "$(( $(date +%s) - start_time ))"
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rm -f "${TRIGGER_FILE}.processing"
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log "=== Rollback complete ==="
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exit 0
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fi
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# ── Handle update ───────────────────────────────────────────────────────────
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if [[ ! -d "$staging_dir" ]]; then
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log "ERROR: Staging directory not found: ${staging_dir}"
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write_result "false" "$to_version" "$(( $(date +%s) - start_time ))" "Staging directory not found"
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rm -f "${TRIGGER_FILE}.processing"
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exit 1
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fi
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# 2. Backup current API code + data/
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local backup_dir="${BACKUPS_DIR}/${from_version}"
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mkdir -p "$backup_dir"
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log "Backing up current API files to ${backup_dir}"
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for item in "$api_source_dir"/*.js "$api_source_dir"/package.json "$api_source_dir"/package-lock.json "$api_source_dir"/Dockerfile "$api_source_dir"/openapi.yaml "$api_source_dir"/VERSION; do
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[[ -f "$item" ]] && cp -f "$item" "$backup_dir/" 2>/dev/null || true
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done
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[[ -d "$api_source_dir/routes" ]] && cp -rf "$api_source_dir/routes" "$backup_dir/"
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[[ -d "$api_source_dir/src" ]] && cp -rf "$api_source_dir/src" "$backup_dir/"
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[[ -d "$api_source_dir/dns-providers" ]] && cp -rf "$api_source_dir/dns-providers" "$backup_dir/"
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# Backup data/ directory (services.json, config.json, credentials, etc.)
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backup_data_dir "$backup_dir"
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# Backup updater state (trigger.json.processing + result.json) so post-mortem
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# has a forensic trail tied to this exact version's backup.
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backup_update_state "$backup_dir"
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cleanup_old_backups
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# 3. Copy new files from staging to API source
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log "Deploying new API files..."
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for item in "$staging_dir"/*.js "$staging_dir"/package.json "$staging_dir"/package-lock.json "$staging_dir"/Dockerfile "$staging_dir"/openapi.yaml "$staging_dir"/VERSION; do
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[[ -f "$item" ]] && cp -f "$item" "$api_source_dir/" 2>/dev/null || true
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done
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# Safety: only replace routes/src if staging has the dir AND it's non-empty.
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# An empty or partial staging dir used to cause live routes/src to be wiped
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# when a prior update cycle was interrupted. We also handle locked files
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# (chattr +i) by temporarily unlocking before replace and re-locking after.
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deploy_tree() {
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local rel="$1" # e.g. "routes"
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local src="${staging_dir}/${rel}"
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local dst="${api_source_dir}/${rel}"
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if [[ ! -d "$src" ]] || [[ -z "$(ls -A "$src" 2>/dev/null)" ]]; then
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[[ -d "$src" ]] && log "WARNING: staging ${rel}/ exists but is empty — leaving live ${rel}/ untouched"
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return 0
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fi
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# Collect any locked files (chattr +i) in the destination. lsattr's
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# first field is the attribute flags ("i" at position 5 = immutable);
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# the second field is the filename. We unlock before rm -rf and re-lock
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# after so the locked state survives the update.
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local locked_files=()
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if [[ -d "$dst" ]]; then
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|
while IFS= read -r lf; do
|
|
[[ -n "$lf" ]] && locked_files+=("$lf")
|
|
done < <(find "$dst" -type f \( -name "*.js" -o -name "*.json" -o -name "*.sh" \) -print0 2>/dev/null \
|
|
| xargs -0 lsattr -a 2>/dev/null \
|
|
| awk '$1 ~ /i/ { print $2 }')
|
|
fi
|
|
|
|
for lf in "${locked_files[@]:-}"; do
|
|
[[ -n "$lf" ]] && chattr -i "$lf" 2>/dev/null || true
|
|
done
|
|
|
|
rm -rf "$dst"
|
|
cp -rf "$src" "$dst"
|
|
local file_count
|
|
file_count=$(find "$dst" -type f 2>/dev/null | wc -l)
|
|
log "${rel}/ deployed (${file_count} files)"
|
|
|
|
for lf in "${locked_files[@]:-}"; do
|
|
[[ -n "$lf" ]] && [[ -f "$lf" ]] && chattr +i "$lf" 2>/dev/null || true
|
|
done
|
|
}
|
|
deploy_tree "routes"
|
|
deploy_tree "src"
|
|
deploy_tree "dns-providers"
|
|
if [[ -n "$commit" ]]; then
|
|
echo "$commit" > "$api_source_dir/VERSION"
|
|
fi
|
|
|
|
# 3a. Apply post-deploy patches — fix upstream bugs in released tarballs
|
|
# (e.g. v1.14.4 has broken require paths and missing license-keygen module).
|
|
# Runs AFTER staging copy, BEFORE docker build. Idempotent.
|
|
local patch_script="/opt/dashcaddy/scripts/dashcaddy-post-deploy-patches.sh"
|
|
if [[ -x "$patch_script" ]]; then
|
|
log "Applying post-deploy patches..."
|
|
if "$patch_script" "$api_source_dir"; then
|
|
log "Post-deploy patches applied successfully"
|
|
else
|
|
log "WARNING: Post-deploy patches exited non-zero — continuing build anyway"
|
|
fi
|
|
else
|
|
log "NOTE: $patch_script not found or not executable — skipping post-deploy patches"
|
|
fi
|
|
|
|
# 3b. Sync frontend
|
|
if [[ -z "$frontend_staging_dir" ]]; then
|
|
parent_staging=$(dirname "$staging_dir")
|
|
[[ -d "$parent_staging/status" ]] && frontend_staging_dir="$parent_staging/status"
|
|
fi
|
|
if [[ -z "$frontend_target_dir" ]]; then
|
|
for candidate in /var/www/dashcaddy-status /etc/dashcaddy/sites/status; do
|
|
[[ -d "$candidate" ]] && frontend_target_dir="$candidate" && break
|
|
done
|
|
fi
|
|
if [[ -n "$frontend_staging_dir" && -n "$frontend_target_dir" && -d "$frontend_staging_dir" ]]; then
|
|
log "Syncing frontend: $frontend_staging_dir -> $frontend_target_dir"
|
|
mkdir -p "$frontend_target_dir"
|
|
[[ -f "$frontend_staging_dir/index.html" ]] && cp -f "$frontend_staging_dir/index.html" "$frontend_target_dir/index.html"
|
|
[[ -f "$frontend_staging_dir/sw.js" ]] && cp -f "$frontend_staging_dir/sw.js" "$frontend_target_dir/sw.js"
|
|
for sub in dist css vendor js; do
|
|
if [[ -d "$frontend_staging_dir/$sub" ]]; then
|
|
mkdir -p "$frontend_target_dir/$sub"
|
|
cp -rf "$frontend_staging_dir/$sub/"* "$frontend_target_dir/$sub/" 2>/dev/null || true
|
|
fi
|
|
done
|
|
if [[ -d "$frontend_staging_dir/assets" ]]; then
|
|
mkdir -p "$frontend_target_dir/assets"
|
|
cp -rf "$frontend_staging_dir/assets/"* "$frontend_target_dir/assets/" 2>/dev/null || true
|
|
fi
|
|
fi
|
|
|
|
# 4. Rebuild container
|
|
log "Rebuilding container..."
|
|
local build_ok=false
|
|
if build_image; then
|
|
build_ok=true
|
|
fi
|
|
|
|
if [[ "$build_ok" != "true" ]]; then
|
|
log "ERROR: Docker build failed — rolling back code + data"
|
|
code_restore "$backup_dir"
|
|
build_image 2>&1 | tail -3 || true
|
|
restart_container
|
|
wait_for_health || true
|
|
write_result "false" "$to_version" "$(( $(date +%s) - start_time ))" "Docker build failed"
|
|
rm -f "${TRIGGER_FILE}.processing"
|
|
exit 1
|
|
fi
|
|
|
|
# 5. Restart container (recreate so new code + env vars take effect)
|
|
restart_container
|
|
|
|
# 6. Health check
|
|
if wait_for_health; then
|
|
local duration=$(( $(date +%s) - start_time ))
|
|
log "=== Update successful: v${to_version} in ${duration}s ==="
|
|
write_result "true" "$to_version" "$duration"
|
|
else
|
|
local duration=$(( $(date +%s) - start_time ))
|
|
log "ERROR: Health check failed after update — rolling back code + data"
|
|
rollback_restore "$backup_dir"
|
|
build_image 2>&1 | tail -3 || true
|
|
restart_container
|
|
wait_for_health || log "WARNING: Rollback health check also failed"
|
|
write_result "false" "$to_version" "$duration" "Health check failed after update"
|
|
fi
|
|
|
|
# 7. Cleanup
|
|
rm -f "${TRIGGER_FILE}.processing"
|
|
rm -rf "${UPDATES_DIR}/staging" 2>/dev/null || true
|
|
|
|
log "=== Update process complete ==="
|
|
}
|
|
|
|
main "$@"
|