TrueCharts - Sync QBittorrent Gluetun Port Forwards

sync-qbittorrent-gluetun-port-forward.sh

#!/bin/bash

# Run on a cron from the host.

NAMESPACE=ix-qbittorrent
CONTAINER_VPN=qbittorrent-vpn
CONTAINER_BITTORRENT=qbittorrent
LAST_PORT_FILE=.last_gluten_forwarded_port

# Fetch the name of the pod with the label "app.kubernetes.io/instance=qbittorrent"
POD=$(k3s kubectl -n $NAMESPACE get pod -l app.kubernetes.io/instance=qbittorrent -o jsonpath="{.items[0].metadata.name}")

# Check the status of the pod
POD_STATUS=$(k3s kubectl -n $NAMESPACE get pod $POD -o jsonpath="{.status.phase}")

if [[ $POD_STATUS != "Running" ]]; then
  echo "Pod is not in the Running state, exiting..."
  exit 1
fi

# Get the forwarded port from the file inside the qbittorrent-vpn container
NEW_PORT=$(k3s kubectl exec -n $NAMESPACE $POD -c $CONTAINER_VPN -- cat /tmp/gluetun/forwarded_port)

if [ -z "$NEW_PORT" ]; then
  echo "No port found in /tmp/gluetun/forwarded_port"
  exit 1
fi

# Compare the new port with the last port value
if [[ -f "$LAST_PORT_FILE" ]]; then
  LAST_PORT=$(cat $LAST_PORT_FILE)
else
  LAST_PORT=""
fi

if [[ $NEW_PORT == $LAST_PORT ]]; then
  echo "Port has not changed, exiting..."
  exit 0
else
  # If the port has changed, store the new port value
  echo $NEW_PORT > $LAST_PORT_FILE

  # Execute the curl request in the qbittorrent container and check response
  RESPONSE=$(k3s kubectl exec -n $NAMESPACE $POD -c $CONTAINER_BITTORRENT -- sh -c "/usr/bin/curl -s -o /dev/null -w '%{http_code}' 'http://localhost:8080/api/v2/app/setPreferences' -d 'json={\"listen_port\": \"$NEW_PORT\"}'")

  if [ "$RESPONSE" -ne 200 ]; then
    echo "Curl request failed with HTTP response code $RESPONSE"
    exit 1
  fi
  echo "Port updated to $NEW_PORT"
fi