[improve][connector] Elastic Search Sink can now handle raw Record

[JeffBolle]

Fixes apache#20619

Motivation

Sink pre-processing functions introduced in PIP 193 (apache#16739) can allow for producing a Record from the function that does not have a GenericObject, and instead is a String or byte[]. The current implementation of the ElasticSearch sink doesn't handle this situation cleanly. Additionally, the setting of the id of the ElasticSearch document from the Record key is incomplete in some cases.

Modifications

Modified the extractIdAndDocument method to create a GenericObject from the Record value if it isn't already.

Verifying this change

• Make sure that the change passes the CI checks.

This change added tests and can be verified as follows:

• Added unit tests in ElasticSearchRawRecordTests

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository: [https://github.com//pull/1]

[github-actions]

The pr had no activity for 30 days, mark with Stale label.