Reindex per store indexes all stores in ElasticSearch

[rain2o]

I noticed when running bin/magento vsbridge:reindex --store=1, the command only runs for the specified store in Magento's context, however it still reindexes all ElasticSearch indexes for all stores.

I discovered this when trying to delete and recreate the index for each store because I had an attribute change its type and the reindex was failing due to the schema mismatch. I tried to run the command above to reindex one store to start with, and noticed all of the other stores throwing errors like this in var/log/vsbridge-indexer/info.log:

vsbridgeIndexerLogger.ERROR: Bulk index operation failed 1 times in index vue_storefront_catalog_en_us for type product. Error (mapper_parsing_exception) : failed to parse [my_attribute]. Failed doc ids sample : 1.

It does delete the index for only the specified store, as it is using the IndexOperations to run that command which accepts the store as a param. So the result is each time I run this for a store, it re-runs the index in ES for all stores, but only deletes and recreates the specified store.

I understand the challenge of resolving this as the index action $indexer->reindexAll(); calls Magento's indexer which then calls each of the indexers in these modules. At the moment I don't have any solutions to recommend, but thought I'd post it here for further discussion.

Hopefully the explanation makes sense. I feel like I kind of wrote in circles here. Let me know if you need some clarity.

[afirlejczyk]

I will take a look.
vsbridge: reindex command is experimental and I only check it for one store. ;)

We probably use something else instead of indexer->reindexAll();.
We can probably use $action->executeFull as reindexAll() is deprecated.

Nevertheless, we are getting stores using Divante\VsbridgeIndexerCore\Indexer\StoreManager - so I think we can make some modification here and we will be able to export data to ES only for specific store.
Like add a method "setStoreIds" and use these values.
I will take a look on #92 first, and then think on fix.

[afirlejczyk]

@rain2o #96
This changes will do the trick, we can update data in ES only for specific store.