我已经在laravel中创建了一个中间件！

<?php

namespace App\Http\Middleware;

use Carbon\Carbon;
use Closure;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Log;
use phpDocumentor\Reflection\Types\String_;

class SystemActivityLogger
{
    /**
     * Handle an incoming request.
     *
     * @param \Illuminate\Http\Request $request
     * @param \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return Response|RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        Log::channel('rabbitmq_elk')->info($this->prepareLogData($request));
        return $next($request);
    }

    /**
     * Prepare log data and log it
     * @param Request $request
     * @return string
     */
    private function prepareLogData(Request $request)
    {
      return json_encode([
          'ip' => $request->ip(),
          'url' => $request->url(),
          'agent' => $request->userAgent(),
          'date' => Carbon::now()->toDateTimeString(),
          'params' => $request->query(),
       ]);
    }
}

此中间件用于日志记录，我希望prepareLogData()返回json类型，并且我可以使用KQL语法在kibana discover中搜索它。这是我的sdamiii.conf文件

input {
       rabbitmq {
        host => "localhost"
        port => 5672
        heartbeat => 30
        queue => "system_logs"
        durable => "true"
        user => "guest"
        password => "guest"
        vhost => "/"
    }   
}
output {
       elasticsearch {
           hosts => ["localhost:9200"]
           index => "my-index-000001"
           data_stream => "false"
       }
}

在运行‍‍bin/logstash -f conf.d/sdamiii.conf命令并请求Laravel后，我在Kiabana中得到以下输出。

但我不按KQL语法搜索，例如我想搜索message.ip我不接收
我该如何解决这个问题？