support regex replacement for sink table naming

[linfan]

Problem

Currently this jdbc connect can only sink data to a table with fixed name or use the whole topic name as part of the table name, but in many cases, people may need a more flexible way to named their target tables.

For example, while using debezium source connect, the kafka topic would be named in a format of <server-id>.<source-database>.<source-table>, which is not suitable to be use as part of the sink table name.

Solution

One of the most flexible way for user to specify a table naming rule is regular expression replacement, which means take the kafka topic name and modify it via a regular expression before put it into the final sink table name.

In this PR, an expression of ${topic/Pattern/Replacement/} is supported for advanced sink table naming. This expression format is inspired by sed and bash.

Does this solution apply anywhere else?

• yes
• no

If yes, where?

bash support a very similar variable value replacement format as ${var/Pattern/Replacement}, and sed support a more regular expression friendly replacement format as /Pattern/Replacement/, while the char / can be substitute by any other symbol such as #.

Test Strategy

Unit test case is included in this PR.

Testing done:

• Unit tests
• Integration tests
• System tests
• Manual tests

Release Plan

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[OneCricketeer]

Maybe I'm wrong, but RegexRouter transform is already able to accomplish this?