[processor/transform] Add support for semconv 1.40.0, 1.39.0 and 1.38.0 in the `set_semconv_span_name()` function by cyrille-leclerc · Pull Request #45911 · open-telemetry/opentelemetry-collector-contrib

cyrille-leclerc · 2026-02-05T22:48:56Z

Description

Add support for semconv 1.40.0, 1.39.0 and 1.38.0 in the set_semconv_span_name() function of the Transform Processor.

Noteworthy functional change:

For semconv >=1.39.0, attribute rpc.system.name takes precedence over the deprecated rpc.system

Noteworthy technical change:

Introduce a semver library for better handling of changes in semconv versions. It the same lib as the one use in the schema processor

Link to tracking issue

Fixes

Testing

Tests added:

Tests for the set_semconv_span_name() function param semconvVersion with new supported values
Test new resource attribute rpc.system.name

Documentation

README.md updated

…me()` function

cyrille-leclerc · 2026-02-06T09:37:25Z

@lmolkova can you please have a look? I see you were a stakeholder of the semconv changes that impact set_semconv_span_name():

Merge rpc.method and rpc.service into fully-qualified rpc.method, clarify span name and possible high cardinality semantic-conventions#3223 doesn't impact set_semconv_span_name() as we already support this scenario.
RPC: adopt system-specific naming practices semantic-conventions#2703 impacts set_semconv_span_name(), the function now makes sense of rpc.system.name while preserving backward compatibility also supporting rpc.system

Co-authored-by: Israel Blancas <iblancasa@gmail.com>

…name logic for semconv 1.39+ Introduce version-aware RPC span name derivation in the set_semconv_span_name function. For semconv >= 1.39.0, the new rpc.system.name attribute takes priority over the deprecated rpc.system; for earlier versions the existing priority is preserved. Version validation is now range-based (1.37.0–1.40.0) using the Masterminds/semver library, replacing the previous string allowlist. The semconv version string is parsed once at function-creation time and propagated as a typed *semver.Version through the call chain. Assisted-by: Claude Sonnet 4.6 <noreply@anthropic.com>

# Conflicts: # processor/transformprocessor/go.mod

…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod

…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod # processor/transformprocessor/go.sum

…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod

# Conflicts: # processor/transformprocessor/go.mod

Co-authored-by: Edmo Vamerlatti Costa <11836452+edmocosta@users.noreply.github.com>

# Conflicts: # processor/transformprocessor/go.mod

…e argument parsing Extract common validation logic into parseSemconvSpanNameArguments helper, reused by both createSetSemconvSpanNameFunction and createSetSemconvSpanNameFunctionLegacy. Assisted-by: Claude Sonnet 4.6

cyrille-leclerc added 5 commits February 5, 2026 23:42

Add support for semconv 1.39.0 and 1.38.0 in the `set_semconv_span_na…

ca8e8f2

…me()` function

Fix typo

df7b291

Add issue number to the changelog

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Remove trailing space char

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cyrille-leclerc marked this pull request as ready for review February 6, 2026 09:36

cyrille-leclerc requested review from a team, TylerHelmuth, bogdandrutu, edmocosta and evan-bradley as code owners February 6, 2026 09:36

github-actions Bot assigned codeboten Feb 6, 2026

github-actions Bot added the processor/transform Transform processor label Feb 6, 2026

iblancasa approved these changes Feb 6, 2026

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Comment thread processor/transformprocessor/internal/traces/func_set_semconv_span_name_test.go Outdated

atoulme added the waiting-for-code-owners label Feb 9, 2026

cyrille-leclerc and others added 2 commits February 10, 2026 09:39

Apply suggestions from code review

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Co-authored-by: Israel Blancas <iblancasa@gmail.com>

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

db2091f

cyrille-leclerc mentioned this pull request Feb 11, 2026

Leverage set_semconv_span_name() for better span and http operation names open-telemetry/opentelemetry-demo#2942

Merged

3 tasks

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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edmocosta reviewed Feb 11, 2026

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Comment thread processor/transformprocessor/internal/traces/func_set_semconv_span_name.go

cyrille-leclerc added 5 commits February 11, 2026 23:25

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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cyrille-leclerc changed the title ~~[processor/transform] Add support for semconv 1.39.0 and 1.38.0 in the set_semconv_span_name() function~~ [processor/transform] Add support for semconv 1.40.0, 1.39.0 and 1.38.0 in the set_semconv_span_name() function Feb 28, 2026

cyrille-leclerc added 3 commits February 28, 2026 11:56

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Update docs

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cyrille-leclerc added 14 commits February 28, 2026 13:56

format

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Try remove unrelated declaration added by go tidy

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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"make gotidy" adds this declaration

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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# Conflicts: # processor/transformprocessor/go.mod

Merge remote-tracking branch 'origin/main' into transform-processor_s…

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…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod

Merge remote-tracking branch 'origin/main' into transform-processor_s…

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…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod # processor/transformprocessor/go.sum

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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Merge remote-tracking branch 'origin/main' into transform-processor_s…

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…etsemconvspanname_1.39 # Conflicts: # processor/transformprocessor/go.mod

Simplify code

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Simplify code

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Simplify code

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Simplify code

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

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# Conflicts: # processor/transformprocessor/go.mod

edmocosta reviewed Mar 30, 2026

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cyrille-leclerc and others added 4 commits March 30, 2026 21:42

Apply suggestion from @edmocosta

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Co-authored-by: Edmo Vamerlatti Costa <11836452+edmocosta@users.noreply.github.com>

Apply suggestions from code review

a077b1b

Co-authored-by: Edmo Vamerlatti Costa <11836452+edmocosta@users.noreply.github.com>

Remove unneeded code

024d031

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

40aafb9

# Conflicts: # processor/transformprocessor/go.mod

cyrille-leclerc requested a review from edmocosta March 31, 2026 13:14

cyrille-leclerc added 3 commits April 1, 2026 10:21

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

aaf67db

# Conflicts: # processor/transformprocessor/go.mod

Merge branch 'main' into transform-processor_setsemconvspanname_1.39

f1bf0ec

edmocosta approved these changes Apr 1, 2026

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Comment thread .chloggen/transformprocessor-set_semconv_span_name-v1.40.0.yaml Outdated

edmocosta and others added 2 commits April 1, 2026 14:52

Update .chloggen/transformprocessor-set_semconv_span_name-v1.40.0.yaml

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Merge branch 'main' into transform-processor_setsemconvspanname_1.39

1ee71bf

edmocosta added ready to merge Code review completed; ready to merge by maintainers and removed waiting-for-code-owners labels Apr 1, 2026

atoulme merged commit 87d40ee into open-telemetry:main Apr 1, 2026
218 of 219 checks passed

cyrille-leclerc deleted the transform-processor_setsemconvspanname_1.39 branch April 2, 2026 12:13

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[processor/transform] Add support for semconv 1.40.0, 1.39.0 and 1.38.0 in the `set_semconv_span_name()` function#45911

[processor/transform] Add support for semconv 1.40.0, 1.39.0 and 1.38.0 in the `set_semconv_span_name()` function#45911
atoulme merged 41 commits into
open-telemetry:mainfrom
cyrille-leclerc:transform-processor_setsemconvspanname_1.39

cyrille-leclerc commented Feb 5, 2026 •

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Description

Link to tracking issue

Testing

Documentation

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cyrille-leclerc commented Feb 5, 2026 •

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