[CAMEL-15196] adds support for opentracing tags

[jam01]

Opentracing allows to set tags to a given Span, this exposes that functionality via a processor.
See: https://issues.apache.org/jira/browse/CAMEL-15196
https://opentracing.io/docs/overview/tags-logs-baggage/#tags

I'm still implementing some tests, but wanted to check with you guys first in case I'm headed down the wrong path.

[oscerd]

Just a checkstyle issue.

[jam01]

Copy that, thank you both. As a follow up question, at what point does it make sense to make this a fully fledged component? There are also methods for setting and retrieving "baggage" from Spans. I'm wondering if multiple processors or a component would be appropriate.

[jam01]

This PR should be good to go :) though I wrote a little bit more about its approach and an alternative one over at https://issues.apache.org/jira/browse/CAMEL-15196 if you have a minute to read it over

[oscerd]

This PR should be good to go :) though I wrote a little bit more about its approach and an alternative one over at https://issues.apache.org/jira/browse/CAMEL-15196 if you have a minute to read it over

For my personal taste I'd prefer the second approach, but in terms of readability and correctness of implementation probably the processor approach seems better.

[jam01]

Thanks @oscerd! If you have any directions about correctness of implementation I can definitely refactor it. Also, maybe we support both approaches?

[oscerd]

I think we need to go with just one approach to avoid confusion, I guess this one is ok :-)

[jam01]

Fair enough :)

[oscerd]

I'll merge this today

[oscerd]

Merged on master

[oscerd]

Thanks