130 lines
4.7 KiB
Bash
130 lines
4.7 KiB
Bash
#!/bin/bash
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# -----------------------------------------------------------------------------------------------
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# ----------------------- Common Helpers for Unraid Scripts -------------------------------------
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# -----------------------------------------------------------------------------------------------
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# ----------------------------- Logging Helper -----------------------------
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log() {
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[[ "$ENABLE_LOGGING" == true ]] && echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
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}
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# ----------------------------- Argument Parsing -----------------------------
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parse_args() {
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DRY_RUN=${DRY_RUN:-false}
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for ARG in "$@"; do
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if [[ "$ARG" == *=* ]]; then
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VAR_NAME="${ARG%%=*}"
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VAR_VALUE="${ARG#*=}"
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if declare -p "$VAR_NAME" &>/dev/null; then
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printf -v "$VAR_NAME" '%s' "$VAR_VALUE"
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log "Overriding $VAR_NAME -> $VAR_VALUE"
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else
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log "Warning: Unknown variable $VAR_NAME, ignoring."
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fi
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else
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case "$ARG" in
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--dry-run|-n) DRY_RUN=true ;;
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--help|-h) echo "Usage: script [--dry-run|-n] [VAR=value ...]"; exit 0 ;;
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*) log "Warning: Unknown argument $ARG" ;;
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esac
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fi
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done
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}
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# ----------------------------- Validation -----------------------------
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require_var() {
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local var="$1"
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[[ -z "${!var:-}" ]] && { log "Error: Required variable $var is not set."; exit 1; }
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}
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validate_int() {
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local name="$1"
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local value="$2"
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[[ ! "$value" =~ ^[0-9]+$ ]] && { log "Error: $name must be a non-negative integer."; exit 1; }
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}
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# ----------------------------- Host Detection & SSH -----------------------------
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LOCAL_HOSTNAME="$(hostname)"
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if [[ "$LOCAL_HOSTNAME" == "$HOST1" ]]; then
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LOCAL_SERVER_NAME="$HOST1"
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REMOTE_SERVER_NAME="$HOST2"
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elif [[ "$LOCAL_HOSTNAME" == "$HOST2" ]]; then
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LOCAL_SERVER_NAME="$HOST2"
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REMOTE_SERVER_NAME="$HOST1"
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else
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log "Error: Local hostname ($LOCAL_HOSTNAME) not recognized."
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exit 1
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fi
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declare -A SSH_KEYS
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SSH_KEYS["$HOST1|$HOST2"]="$HOST1_SSH_KEY"
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SSH_KEYS["$HOST2|$HOST1"]="$HOST2_SSH_KEY"
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KEY_ID="$LOCAL_SERVER_NAME|$REMOTE_SERVER_NAME"
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SSH_KEY="${SSH_KEYS[$KEY_ID]}"
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[[ -z "$SSH_KEY" ]] && { log "Error: No SSH key defined for $LOCAL_SERVER_NAME → $REMOTE_SERVER_NAME"; exit 1; }
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# ----------------------------- Remote Server IP -----------------------------
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REMOTE_SERVER=$(tailscale ip -4 "$REMOTE_SERVER_NAME" 2>/dev/null)
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[[ -z "$REMOTE_SERVER" ]] && { log "Error: Could not resolve Tailscale IP for $REMOTE_SERVER_NAME"; exit 1; }
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log "Local server: $LOCAL_SERVER_NAME, Remote server: $REMOTE_SERVER_NAME, IP: $REMOTE_SERVER"
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# ----------------------------- Container Helpers -----------------------------
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declare -a RUNNING_CONTAINERS=()
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stop_containers() {
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log "[$LOCAL_SERVER_NAME] Checking containers on $REMOTE_SERVER_NAME..."
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RUNNING_CONTAINERS=()
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for container in "${CRITICAL_CONTAINER_NAMES[@]}"; do
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STATUS=$(ssh -i "$SSH_KEY" root@"$REMOTE_SERVER" "docker inspect -f '{{.State.Running}}' $container 2>/dev/null" || echo "false")
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if [[ "$STATUS" == "true" ]]; then
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log "Stopping $container"
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RUNNING_CONTAINERS+=("$container")
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ssh -i "$SSH_KEY" root@"$REMOTE_SERVER" "docker stop $container"
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fi
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done
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}
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start_containers() {
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log "[$LOCAL_SERVER_NAME] Restarting containers on $REMOTE_SERVER_NAME..."
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for container in "${RUNNING_CONTAINERS[@]}"; do
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if [[ " ${DELAYED_CONTAINERS[*]} " == *" $container "* ]]; then
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log "Delaying start of $container by ${CONTAINER_DELAY}s..."
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sleep "$CONTAINER_DELAY"
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fi
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ssh -i "$SSH_KEY" root@"$REMOTE_SERVER" "docker start $container"
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done
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}
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# ----------------------------- Rsync Options Builder -----------------------------
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get_rsync_opts() {
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if [[ -n "${PROFILE_RSYNC_OPTS[$PROFILE_NAME]:-}" ]]; then
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read -r -a RSYNC_OPTS <<< "${PROFILE_RSYNC_OPTS[$PROFILE_NAME]}"
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else
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RSYNC_OPTS=("${DEFAULT_RSYNC_OPTS[@]}")
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fi
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}
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# ----------------------------- Wait for Rsync -----------------------------
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wait_for_rsync() {
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for attempt in $(seq 1 "$RETRY_COUNT"); do
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RSYNC_COUNT=$(pgrep -fc "rsync.*root@${REMOTE_SERVER}" || true)
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if [ "$RSYNC_COUNT" -ge "$MAX_RSYNC_PROCS" ]; then
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log "[$LOCAL_SERVER_NAME] Waiting... ($RSYNC_COUNT active rsync processes)"
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sleep "$SLEEP"
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else
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return 0
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fi
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done
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log "Too many rsync processes, exiting."
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exit 1
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}
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# ----------------------------- Check Server -----------------------------
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check_server_online() {
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if ping -c 1 "$REMOTE_SERVER" &>/dev/null; then
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return 0
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else
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return 1
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fi
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} |