Can't get ID of newly created attribute

Question

I am creating an importer which will add products from an API to our Magento site. Part of the requirements is to programatically create an attribute if it does not yet exist on the Magento side. Unfortunately, when trying to retrieve the ID of attributes created this way... I get:

"The attribute with a "XXX" attributeCode doesn't exist. Verify the attribute and try again. "

This is despite said attribute appearing in admin dash with the correct attributeCode.

I have code working to create an attribute:

$eavSetup->addAttribute(
                $productEntity,
                $attName,
                [
                        'type' => 'int',
                        'label' => $attName,
                        'input' => 'text',
                        'source' => '',
                        'required' => false,
                        'filterable' => false,
                        'visible_on_front' => true,
                        'used_in_product_listing' => true,
                        'attribute_group_name' => 'Characteristics',
                        'attribute_set_name' => 'Sandvik',
                        'backend' => '',
                        'is_user_defined' => 1
                ]
            );
            echo ("Added attribute");
            $this->cacheTypeList->cleanType('eav');
            $attId = $this->getAttId($productEntity, $attName);
            $eavSetup->addAttributeToGroup($productEntity, 317, 4241, $attId);

The getAttId function used is as follows:

    private function getAttId($productEntity, $attName) {
    try {
        $attributeId = $this->eavAttribute->getIdByCode($productEntity, $attName);
        return $attributeId;
    }
    catch (Error $e) {
        return null;
    }
}

As you can see I am already clearing the eav cache in between creating the attribute and fetching it's ID.

Any help would be greatly appreciated

Answer 1

After creating new attribute(s) reset EAV cache with this method: \Magento\Eav\Model\Config::clear

Inside Magento\Eav\Model\Config there is a property $attributes which keeps preloaded attributes data.

Answer 2

You can use the above code to get attribute Id by attribute Code, Use the code to get Id as given below:

public function __construct(\Magento\Catalog\Api\ProductAttributeRepositoryInterface $attributeRepository){
...
$this->attributeRepository = $attributeRepository;
...
}

/**
 * Get attribute
 *
 * @param string $attributeCode
 * @return \Magento\Catalog\Api\Data\ProductAttributeInterface
 */
public function getAttribute($attributeCode)
{
    return $this->attributeRepository->get($attributeCode)->getAttributeId();
}

This will return you the Id of attribute.