If your site has installed a third-party search engine and you want to know the elastic search is enabled or not, you can identify it.

First, you need to instantiate the MagentoElasticsearchModelConfig class to your __construct() method.

And then you can use the below code.

<?php
namespace MagemonkeysElasticsearchModel;

use MagentoElasticsearchModelConfig;

class ConfigData
{
    /**
     * @var Config
     */
    private $config;

    public function __construct(
        Config $config
    ) {
        $this->config = $config;
    }

    /**
     * @return bool
     */
    public function isElasticsearchEnabled()
    {
        return $this->config->isElasticsearchEnabled();
    }
}

Now, you need to call below command.

$result = $this->isElasticsearchEnabled();

The result will be true if your site has enabled elastic search.