Add support to emit expanded change stream events

[nlescure-pictet]

Hi,

I was looking at the source code of the ChangeStreamTask and I realized that when creating the ChangeStreamIterable, the code doesn't set the above mentioned flag. It would have to be added to the ChangeStreamOptions.builder() as well.
At the moment, it is therefore impossible to listen to the following types of events: createIndexes, dropIndexes, modify, create, shardCollection, reshardCollection, refineCollectionShardKey (because the flag is false by default.)

Cheers.

[roy0424]

I'd like to work on this issue.

Is there anything specific I should be aware of before starting?
If not, I'll begin exploring the ChangeStreamOptions flow and prepare a PR. 🙂

[nlescure-pictet]

Hi,

Thanks for that !
No nothing specific really - just a few lines of code to update :)

[roy0424]

@christophstrobl I'd like to contribute and take this issue. Could you assign it to me?

[roy0424]

I’ve opened PR #5112 for this. Feedback is welcome.