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[receiver/datadog][bug-fix] Add DD span metrics as attributes #35087

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lopes-felipe
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Description:
Datadog divides the span's tags into two fields, meta for string values and metrics for numeric ones.

Currently, the receiver isn't considering the metrics field when building the OTel span's attributes, losing this metadata during the conversion. This PR fixes this issue.

Link to tracking Issue:

Testing:

Documentation:

@lopes-felipe
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Test failing due to this unrelated issue.

@lopes-felipe
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@jpkrohling @MovieStoreGuy, would you mind reviewing this? It's a pretty straightforward change. Thank you :)

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LGTM

@lopes-felipe
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Thank you for the review @jpkrohling. Any chances we get this merged as well?

@jpkrohling jpkrohling merged commit 36b603d into open-telemetry:main Sep 19, 2024
155 of 156 checks passed
@github-actions github-actions bot added this to the next release milestone Sep 19, 2024
@lopes-felipe lopes-felipe deleted the datadog-receiver/fix-span-attributes-bug branch October 1, 2024 21:02
jriguera pushed a commit to springernature/opentelemetry-collector-contrib that referenced this pull request Oct 4, 2024
…-telemetry#35087)

**Description:** <Describe what has changed.>
Datadog [divides the span's
tags](https://github.com/DataDog/dd-trace-java/blob/master/dd-trace-core/src/main/java/datadog/trace/common/writer/ddagent/TraceMapperV0_5.java#L210-L212)
into [two
fields](https://github.com/DataDog/datadog-agent/blob/1739a048156d968bbe5fd8a1ace8e07c997d16d9/pkg/proto/datadog/trace/span.proto#L50-L55),
`meta` for string values and `metrics` for numeric ones.

Currently, the receiver isn't considering the `metrics` field when
building the OTel span's attributes, losing this metadata during the
conversion. This PR fixes this issue.

**Link to tracking Issue:** <Issue number if applicable>

**Testing:** <Describe what testing was performed and which tests were
added.>

**Documentation:** <Describe the documentation added.>

---------

Co-authored-by: Sean Marciniak <30928402+MovieStoreGuy@users.noreply.github.com>
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5 participants