magento-test/app/code/Magento/Catalog

#Magento_Catalog Magento_Catalog module functionality is represented by the following sub-systems:

• Products Management. It includes CRUD operation of product, product media, product attributes, etc...
• Category Management. It includes CRUD operation of category, category attributes

Catalog module provides mechanism for creating new product type in the system. Catalog module provides API filtering that allows to limit product selection with advanced filters.

Structure

[Learn about a typical file structure for a Magento 2 module] (https://devdocs.magento.com/guides/v2.4/extension-dev-guide/build/module-file-structure.html).

Observer

This module observes the following events: etc/events.xml magento_catalog_api_data_productinterface_save_before event in Magento\Framework\EntityManager\Observer\BeforeEntitySave file. magento_catalog_api_data_productinterface_save_after event in Magento\Framework\EntityManager\Observer\AfterEntitySave file. magento_catalog_api_data_productinterface_delete_before event in Magento\Framework\EntityManager\Observer\BeforeEntityDelete file. magento_catalog_api_data_productinterface_delete_after event in Magento\Framework\EntityManager\Observer\AfterEntityDelete file. magento_catalog_api_data_productinterface_load_after event in Magento\Framework\EntityManager\Observer\AfterEntityLoad file. magento_catalog_api_data_categoryinterface_save_before event in Magento\Framework\EntityManager\Observer\BeforeEntitySave file. magento_catalog_api_data_categoryinterface_save_after event in Magento\Framework\EntityManager\Observer\AfterEntitySave file. magento_catalog_api_data_categoryinterface_save_after event in Magento\Catalog\Observer\InvalidateCacheOnCategoryDesignChange file. magento_catalog_api_data_categoryinterface_delete_before event in Magento\Framework\EntityManager\Observer\BeforeEntityDelete file. magento_catalog_api_data_categoryinterface_delete_after event in Magento\Framework\EntityManager\Observer\AfterEntityDelete file. magento_catalog_api_data_categoryinterface_load_after event in Magento\Framework\EntityManager\Observer\AfterEntityLoad file. magento_catalog_api_data_categorytreeinterface_save_before event in Magento\Framework\EntityManager\Observer\BeforeEntitySave file. magento_catalog_api_data_categorytreeinterface_save_after event in Magento\Framework\EntityManager\Observer\AfterEntitySave file. magento_catalog_api_data_categorytreeinterface_delete_before event in Magento\Framework\EntityManager\Observer\BeforeEntityDelete file. magento_catalog_api_data_categorytreeinterface_delete_after event in Magento\Framework\EntityManager\Observer\AfterEntityDelete file. magento_catalog_api_data_categorytreeinterface_load_after event in Magento\Framework\EntityManager\Observer\AfterEntityLoad file. admin_system_config_changed_section_catalog event in Magento\Catalog\Observer\SwitchPriceAttributeScopeOnConfigChange file. catalog_product_save_before event in Magento\Catalog\Observer\SetSpecialPriceStartDate file. store_save_after event in Magento\Catalog\Observer\SynchronizeWebsiteAttributesOnStoreChange file. catalog_product_save_commit_after event in Magento\Catalog\Observer\ImageResizeAfterProductSave file. catalog_category_prepare_save event in Magento\Catalog\Observer\CategoryDesignAuthorization file.

`/etc/frontend/events.xml`
   `customer_login` event in
   `Magento\Catalog\Observer\Compare\BindCustomerLoginObserver` file.
    `customer_logout` event in
   `Magento\Catalog\Observer\Compare\BindCustomerLogoutObserver` file.

`/etc/adminhtml/events.xml`
    `cms_wysiwyg_images_static_urls_allowed` event in
   `Magento\Catalog\Observer\CatalogCheckIsUsingStaticUrlsAllowedObserver` file.
    `catalog_category_change_products` event in
   `Magento\Catalog\Observer\CategoryProductIndexer` file.
    `category_move` event in
   `Magento\Catalog\Observer\FlushCategoryPagesCache`