Magento 2.3. - custom import module with Magmi Integration - magento

Question

I'm trying to write a magento modulo for importing products from a csv file. I would like to use Magmi to achieve the import. I tried the following code but it doesn't work.
namespace My\Module\Controller\Adminhtml\Home;
require_once(dirname(__FILE__) . "/../../../../../../../lib/magmi/inc/magmi_defs.php");
require_once(dirname(__FILE__) . "/../../../../../../../lib/magmi/integration/inc/magmi_datapump.php");
class Import extends \Magento\Backend\App\Action{
public function execute()
{
// getting data from a casv file
for ($items as $item){
$dp = Magmi_DataPumpFactory::getDataPumpInstance("productimport");
$dp->beginImportSession("default", "xcreate");
$item = "product field array";
$run = $dp->ingest($item);
$dp->endImportSession();
}
}
}
I receive errors on the Magmi classes "class not found". I tried also different code but the only way a think it can works is using class file named, e.g. Datapump.php with e defined class named Datapump. But I cannot rewrite all files of magmi to make it works, so maybe I'm doing something wrong.

Answer 1

Though not an ideal solution. But you can try this.
1) Make below changes in file magmi/integration/inc/magmi_datapump.php
Change the class name from 'Magmi_DataPumpFactory' to 'Magmi_DataPump'
This is needed because Magento 2 interprets Factory keyword in a different way.
2) Now create an autoloader file
app/code/Vendor/Module/magmi-autoloader.php
<?php
$mapping = array(
'Magmi_Defs' => BP . '/magmi/inc/magmi_defs.php"',
'Magmi_DataPump' => BP . '/magmi/integration/inc/magmi_datapump.php'
);
spl_autoload_register(function ($class) use ($mapping) {
if (isset($mapping[$class])) {
require $mapping[$class];
}
}, true);
3) Now change relative paths in below file to absolute path. Since while running magmi classes through Magento, it will be not able to read paths relative to magmi directory.
magmi/inc/magmi_defs.php
<?php
// change below define variables to their absolute paths according to your project's root directory
define("MAGMI_BASEDIR", dirname(dirname(__FILE__)));
define("MAGMI_INCDIR", MAGMI_BASEDIR . '/inc');
define("MAGMI_INTEGRATION_INCDIR", MAGMI_BASEDIR . '/integration/inc');
define("MAGMI_PLUGIN_DIR", MAGMI_BASEDIR.'/plugins');
define("MAGMI_ENGINE_DIR", MAGMI_BASEDIR . '/engines');
.
.
//other code
.
.
4) Now change your controller file as below
<?php
namespace Vendor\Module\Controller\Adminhtml\Home;
require BP.'/app/code/Vendor/Module/magmi-autoloader.php';
class Import extends \Magento\Backend\App\Action
{
public function execute()
{
// getting data from a csv file
$dp = \Magmi_DataPump::getDataPumpInstance("productimport");
// move this outside the loop to prevent mysql max_connection error
$dp->beginImportSession("default", "xcreate");
for ($items as $item){
$item = "product field array";
$run = $dp->ingest($item);
}
$dp->endImportSession();
}
}