Support for attributes of type any and template[any]

[lquerel]

This PR introduces support for attributes of type any and template[any], enabling more flexible handling of attribute values in the semconv.

Closes: #703

[codecov]

Codecov Report

Attention: Patch coverage is 21.42857% with 33 lines in your changes missing coverage. Please review.

Project coverage is 76.5%. Comparing base (98bf4b4) to head (737b152).

Files with missing lines	Patch %	Lines
crates/weaver_emit/src/spans.rs	18.4%	31 Missing ⚠️
crates/weaver_live_check/src/advice.rs	0.0%	1 Missing ⚠️
crates/weaver_semconv/src/attribute.rs	66.6%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #707     +/-   ##
=======================================
- Coverage   77.0%   76.5%   -0.5%     
=======================================
  Files         65      65             
  Lines       4936    4978     +42     
=======================================
+ Hits        3803    3812      +9     
- Misses      1133    1166     +33     

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[jerbly]

I think we need a way to compare compatibility of PrimitiveOrArrayTypeSpec. In the TypeAdvisor near your change, we compare the sample type with the semconv type with a simple inequality:

if attribute_type != semconv_attribute_type {

But now if attribute_type is string and semconv_attribute_type is any then these types are compatible.

[lmolkova]

Schema changes LGTM!

Let's bring it up on the semconv tooling meeting - we'll need to communicate this to maintainers - some languages need to add support for any attributes or would generate invalid code.

[jerbly]

@lquerel - setting this to "Request Changes" so we don't merge without fixing the TypeAdvisor. (see other comment).

[dyladan]

What's the current status of this? Is it waiting more reviews or blocked on something?

[lmolkova]

@dyladan ETA to get this one merged is this week and release is planned for the next week.

[lquerel]

I think we need a way to compare compatibility of PrimitiveOrArrayTypeSpec. In the TypeAdvisor near your change, we compare the sample type with the semconv type with a simple inequality:

if attribute_type != semconv_attribute_type {

But now if attribute_type is string and semconv_attribute_type is any then these types are compatible.

@jerbly I made this change

[jerbly]

Thanks! Good to go!