pdata: add iterator All method to slice and map types

[mauri870]

Description

This PR adds support for iterators to Slice and Map types and their autogenerated counterparts. Iterators were stabilized in Go 1.23.

The All method is analogous to maps.All and slices.All and is a more idiomatic alternative to the more verbose for i := 0; i < es.Len(); i++ { z := es.At(i) } way of looping.

Code that is written like this today:

for i := 0; i < ld.ResourceLogs().Len(); i++ {
        rl := ld.ResourceLogs().At(i)
        for j := 0; j < rl.ScopeLogs().Len(); j++ {
                sl := rl.ScopeLogs().At(j)
                for k := 0; k < sl.LogRecords().Len(); k++ {
                        lr := sl.LogRecords().At(k)
                        // use lr
                }
        }
}

Can now be written like this:

for _, rl := range ld.ResourceLogs().All() {
        for _, sl := range rl.ScopeLogs().All() {
                for _, lr := range sl.LogRecords().All() {
                        // use lr
                }
        }
}

Link to tracking issue

Fixes #11982

[mx-psi]

@djaglowski Do you think this would improve #8927 ? Is there a way we can make it solve #8927?

[codecov]

Codecov Report

Attention: Patch coverage is 51.52838% with 111 lines in your changes missing coverage. Please review.

Project coverage is 91.82%. Comparing base (56fbf4c) to head (7112cb8).

Files with missing lines	Patch %	Lines
pdata/pcommon/generated_byteslice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/generated_float64slice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/generated_int32slice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/generated_int64slice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/generated_stringslice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/generated_uint64slice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/pcommon/map.go	57.14%	2 Missing and 1 partial ⚠️
pdata/pcommon/slice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/plog/generated_logrecordslice.go	50.00%	2 Missing and 1 partial ⚠️
pdata/plog/generated_resourcelogsslice.go	50.00%	2 Missing and 1 partial ⚠️
... and 27 more

❌ Your patch check has failed because the patch coverage (51.52%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12380      +/-   ##
==========================================
- Coverage   92.18%   91.82%   -0.37%     
==========================================
  Files         465      465              
  Lines       25275    25495     +220     
==========================================
+ Hits        23301    23410     +109     
- Misses       1575     1649      +74     
- Partials      399      436      +37     

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[djaglowski]

@djaglowski Do you think this would improve #8927 ? Is there a way we can make it solve #8927?

I've closed #8927 in favor of #11982. I think this solves the same problem.

[mauri870]

Any ideas on what could be causing the failures https://github.com/open-telemetry/opentelemetry-collector/actions/runs/13333923272/job/37244695282?pr=12380#step:4:3611? It looks like a check for the new All method is being automatically added in some contrib tests. Since Range isn't included there, there must be a way to bypass this—I just don't know what it is.

[mauri870]

The failures in contrib-tests-matrix is due to comparing iter.Seq2 against each other. Since iter.Seq is a non-nil reflect.Func the comparison will always return false. I opened a PR fixing the test at open-telemetry/opentelemetry-collector-contrib#38008.

I assume that once that PR is merged this test will pass.