Arrs: remote host cards via SSH cache, vv_arrs_local_node(), 2h refresh schedule

2026-06-03 18:16:56 -04:00
parent 6c0164713b
commit 2223cf80f7
4 changed files with 245 additions and 23 deletions
@@ -0,0 +1,122 @@
+#!/bin/bash
+# ==============================================================================================
+# ============================= Remote Arr Cache Writer ========================================
+# ==============================================================================================
+#
+# PURPOSE
+# ─────────────────────────────────────────────────────────────────────────────
+# SSHes to each remote partner host, calls vv_arrs_local_node() on their PHP
+# stack, and caches the result locally in /tmp/vv_cache/arrs_remote_hostN.json.
+#
+# The arrs page reads these files for instant initial load without hitting the
+# remote arr APIs on every page view. This script runs every 2 hours so remote
+# library counts stay reasonably current without hammering the network.
+#
+# Accepts --host=HOST2 to refresh a single host (used by the UI refresh button).
+#
+# ==============================================================================================
+# USAGE
+# ==============================================================================================
+#
+#   remote_arr_cache_writer.sh               — refresh all remote hosts
+#   remote_arr_cache_writer.sh --host=HOST2  — refresh one host only
+#   remote_arr_cache_writer.sh --dry-run     — show what would happen
+#   remote_arr_cache_writer.sh --log         — verbose output
+#
+# ==============================================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/../load_config.sh"
+
+parse_args "$@"
+acquire_lock
+detect_hosts
+
+# Parse --host= from raw args
+TARGET_HOST=""
+for arg in "$@"; do
+    case "$arg" in --host=*) TARGET_HOST="${arg#--host=}" ;; esac
+done
+
+mkdir -p /tmp/vv_cache
+
+FETCH_OK=0
+FETCH_FAIL=0
+FETCH_SKIP=0
+
+echo ""
+echo "━━━ $ICON_SYNC Remote Arr Cache Writer ━━━"
+[[ "$DRY_RUN" == true ]] && warn "DRY RUN — no changes will be made"
+[[ -n "$TARGET_HOST" ]] && echo "  Target: $TARGET_HOST"
+echo ""
+
+for host_var in HOST1 HOST2 HOST3 HOST4 HOST5 HOST6 HOST7 HOST8; do
+    [[ "$host_var" == "$MY_ID" ]] && continue
+
+    hostname="${!host_var:-}"
+    [[ -z "$hostname" ]] && continue
+
+    # If targeting a specific host, skip others
+    if [[ -n "$TARGET_HOST" ]]; then
+        [[ "${host_var,,}" != "${TARGET_HOST,,}" && "$host_var" != "$TARGET_HOST" ]] && continue
+    fi
+
+    host_id="${host_var,,}"   # host1, host2, …
+    cache_file="/tmp/vv_cache/arrs_remote_${host_id}.json"
+
+    echo "  $host_var ($hostname)…"
+
+    if [[ "$DRY_RUN" == true ]]; then
+        warn "  DRY RUN — would SSH to $hostname and cache arr data"
+        (( FETCH_SKIP++ ))
+        continue
+    fi
+
+    # Resolve Tailscale IP
+    REMOTE_IP=$(resolve_tailscale_ip "$hostname")
+    if [[ -z "$REMOTE_IP" ]]; then
+        warn "  $host_var: cannot resolve Tailscale IP for $hostname — skipping"
+        (( FETCH_FAIL++ ))
+        continue
+    fi
+    log "  $host_var: resolved $hostname → $REMOTE_IP"
+
+    # SSH and call vv_arrs_local_node() on the remote
+    RESULT=$(ssh -i "$SSH_KEY" \
+        -o ConnectTimeout=10 \
+        -o StrictHostKeyChecking=no \
+        -o BatchMode=yes \
+        "root@${REMOTE_IP}" \
+        "php -r \"require_once '/usr/local/emhttp/plugins/varaverk/include/arrs.php'; echo json_encode(vv_arrs_local_node());\"" \
+        2>/dev/null)
+
+    if [[ -z "$RESULT" ]]; then
+        warn "  $host_var: empty response from SSH — skipping"
+        (( FETCH_FAIL++ ))
+        continue
+    fi
+
+    # Validate JSON
+    if ! echo "$RESULT" | php -r "
+        \$d = json_decode(file_get_contents('php://stdin'), true);
+        exit(!is_array(\$d) || !isset(\$d['arrs']) ? 1 : 0);
+    " 2>/dev/null; then
+        warn "  $host_var: invalid or unexpected JSON — skipping"
+        log "  Response: ${RESULT:0:200}"
+        (( FETCH_FAIL++ ))
+        continue
+    fi
+
+    echo "$RESULT" > "$cache_file"
+    CACHED_TYPES=$(echo "$RESULT" | php -r "
+        \$d = json_decode(file_get_contents('php://stdin'), true);
+        echo implode(', ', array_column(\$d['arrs'] ?? [], 'type'));
+    " 2>/dev/null)
+    echo "  $host_var: cached ✅ — ${CACHED_TYPES:-no arrs}"
+    (( FETCH_OK++ ))
+done
+
+echo ""
+echo "━━━━━ $ICON_SUMMARY Cache Writer Summary ━━━━━"
+echo "  $FETCH_OK updated · $FETCH_FAIL failed · $FETCH_SKIP skipped"
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"