Which function will be called in CatalogImportExport module on click of 'Import' button when U import bulk csv products in System->Import->Products
Magento/ImportExport/Model/Import is called.
processImport from that same class is called.
At this point it's still pretty abstract.
But from the following line:
The system starts importing based on the entity type (in your case products)
importData method is defined in
Magento/ImportExport/Model/Import/AbstractEntity but all it does is calling
Now we go to
Magento/CatalogImportExport/Model/Import/Product and here's what happens based on the behavior chosen:
- Product deletions in
- Product replacement in
- Product creation in