Add logging for ISO-4217 currency format checks

[1u0]

One-line summary

Description

This PR adds logging for ISO-4217 (currencies) code checks during publishing events according to their event schemas. Note: the validation is not enforced (for now), but just logging for observation for now. To avoid too much logging (in case of violations), one can use log4j filtering (for example using BurstFilter).

Review

• [ ] Tests
• [ ] Documentation

Deployment Notes

These should highlight any db migrations, feature toggles, etc.

[adyach]

I am fine to go just with the validation of the current code, but it would be great to test that this validator is picked up and takes correct value from the JSON object.

[1u0]

I am fine to go just with the validation of the current code, but it would be great to test that this validator is picked up and takes correct value from the JSON object.

The validator is picked up correctly, afaik - this is tested manually under debugger. Since the current behavior of validator is just to log issues, and won't raise any validation errors, imo, it would be artificial to test its integration. What if we add the proper test later, when the validator would actually enforce the validation (instead of logging)?

[tor-vs-floki]

👍

[samizzy]

:+1: