feat(metrics): add opentelemetry support - #575

Hi @roblaszczak and @m110,

Could you please help review this PR when you have a moment?

Thanks!

We had this issue with OpenTelemtry in many projects: open-telemetry/opentelemetry-go#4476

To avoid that it would be good to move OpenTelemetry implementation to a separate package, with a separate go.mod. So the main go.mod won't be affected.

I would moving those changes to a separate components/opentelemetry package.

Do you feel you'll have time for that @ahkui? Let us know!

We had this issue with OpenTelemtry in many projects: open-telemetry/opentelemetry-go#4476

To avoid that it would be good to move OpenTelemetry implementation to a separate package, with a separate go.mod. So the main go.mod won't be affected.

I would moving those changes to a separate components/opentelemetry package.

Do you feel you'll have time for that @ahkui? Let us know!

@roblaszczak yes, i can handle that

the new pkg i will move to components/metrics/opentelemetry, do you have other suggestion for the location ?

We had this issue with OpenTelemtry in many projects: open-telemetry/opentelemetry-go#4476
To avoid that it would be good to move OpenTelemetry implementation to a separate package, with a separate go.mod. So the main go.mod won't be affected.
I would moving those changes to a separate components/opentelemetry package.
Do you feel you'll have time for that @ahkui? Let us know!

@roblaszczak yes, i can handle that

the new pkg i will move to components/metrics/opentelemetry, do you have other suggestion for the location ?

Hey, I discussed it with @m110 and since it looks orthogonal to the metrics package we can keep it flat (keeping it in sub-directory would suggest that it depends on metrics).

So I would suggest components/opentelemetry. It will be also easier to find :-)

Hey @ahkui and @roblaszczak, I would love to have OTEL metrics in Watermill, do you need any help to finalize this Pull Request?

Hi @roblaszczak, @m110, and @Thorleon,

First, I really apologize for the long delay and the radio silence! Life has been extremely busy on my end over the past few months, so I had to put this on hold for a while.

I have now refactored the PR and isolated the OpenTelemetry implementation into components/opentelemetry with its own go.mod, as suggested. I've also resolved the merge conflicts with the master branch.

Could you please take another look when you have a moment? Thank you so much for your patience and support!