Files
Varaverk/System_Essentials/conf_cache_restore.sh
T
Gmer4Lfe 6623d1e776 Fix dead/incorrect vars and consolidate duplicated logic into common.sh
Codebase-wide audit pass: fixed real bugs (SSH hangs missing BatchMode,
local-outside-function no-ops, variable name collisions, a truncated
ratio calc, wrong state-dir path, DARK vs NO_INTERNET drift, and more),
then pulled logic that was duplicated across multiple scripts — arr
cleanup safety gates, docker restart ordering, container maintenance
stop/restart, watchdog state-file helpers, partnership role resolution,
cert expiry checks, remote node discovery, and TMDB discovery scoring —
into common.sh so each now has a single implementation.
2026-07-03 23:52:33 -04:00

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#!/bin/bash
# ==============================================================================================
# ============================= Conf Cache Restore =============================================
# ==============================================================================================
#
# PURPOSE
# ─────────────────────────────────────────────────────────────────────────────
# Runs at array start after conf_sync.sh. Checks whether partner confs made it
# into the RAM cache. If any are missing (partner was unreachable at boot) and
# a persistent backup exists from the previous shutdown, loads the missing confs
# from backup into the RAM cache so scripts like fallback.sh have partner vars.
#
# Always removes the persistent backup when done — used or not.
#
# Normal reboot (partner up):
# conf_sync.sh pulls fresh → RAM cache complete → backup not needed → removed
#
# Edge case (partner down at boot):
# conf_sync.sh fails to pull → RAM cache missing partner → backup loaded into
# RAM → backup removed → fallback.sh runs with last-known-good partner vars
#
# Own conf is never in the backup — it's always on disk.
#
# ==============================================================================================
# DESIGN PRINCIPLES
# ==============================================================================================
#
# Remove After Use
# The persistent backup is always removed at the end of the run — whether it
# was used or not. Stale backups from a previous shutdown should never be left
# behind as a permanent fallback; the backup is a single-boot safety net, not
# a long-lived cache.
#
# Partner Only
# Own conf is on disk and is always available regardless of array or partner
# state. Only partner confs can be missing after a boot — only those are
# restored.
#
# ==============================================================================================
# OPERATIONAL SAFEGUARDS
# ==============================================================================================
#
# require_partnership — exits early if PARTNERSHIP_ENABLED=false
# detect_hosts() — determines which conf files belong to partners vs self
# No-backup guard — exits cleanly if PERSISTENT_CONF_CACHE doesn't exist
#
# ==============================================================================================
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/../load_config.sh"
parse_args "$@"
detect_hosts
require_partnership
RAM_CACHE="$CONF_RAM_CACHE_DIR"
SAVE_DIR="$PERSISTENT_CONF_CACHE"
[[ "$DRY_RUN" == true ]] && warn "DRY RUN — no changes will be made"
if [[ ! -d "$SAVE_DIR" ]]; then
log "No persistent conf backup found — nothing to restore"
exit 0
fi
restored=0
for conf in "$SAVE_DIR"/host*.conf; do
[[ -f "$conf" ]] || continue
base="$(basename "$conf")"
is_own_conf_file "$base" && continue
if [[ -f "$RAM_CACHE/$base" ]]; then
log "$base already in RAM cache (conf_sync succeeded) — skipping"
continue
fi
if [[ "$DRY_RUN" == true ]]; then
warn "DRY RUN — would restore $base → RAM cache"
(( restored++ ))
continue
fi
mkdir -p "$RAM_CACHE"
if cp "$conf" "$RAM_CACHE/$base"; then
echo "Restored $base from persistent backup → RAM cache ✅"
(( restored++ ))
else
warn "Failed to restore $base"
fi
done
[[ "$restored" -gt 0 ]] && \
warn "Loaded $restored partner conf(s) from persistent backup — partner was unreachable at array start"
if [[ "$DRY_RUN" == false ]]; then
rm -rf "$SAVE_DIR"
log "Persistent conf backup cleared"
else
warn "DRY RUN — would remove $SAVE_DIR"
fi
exit 0