feat: Add support to send OTEL traces via OTLP by jamescrosswell · Pull Request #4899 · getsentry/sentry-dotnet

jamescrosswell · 2026-02-09T00:54:21Z

Resolves: #4859

OTLP integration #4859

Problem

Sentry's .NET SDK has an existing OpenTelemetry integration (Sentry.OpenTelemetry) that works by acting as a bridge — it intercepts OTel spans via a custom SpanProcessor and converts them into Sentry's proprietary transaction/span format before sending them to Sentry's envelope endpoint. This works, but it means Sentry is translating OTel data into its own model, which adds complexity and loses fidelity. Meanwhile, Sentry now has a native OTLP (OpenTelemetry Protocol) endpoint that can ingest standard OTel traces directly — no translation needed.

Solution

This PR introduces a new NuGet package, Sentry.OpenTelemetry.Exporter, that lets users send traces to Sentry via the standard OTLP protocol instead of Sentry's proprietary format. The key pieces are:

New package with OTLP exporter wiring

TracerProviderBuilderExtensions.cs provides an AddSentryOtlp(dsn) extension method that configures the standard OpenTelemetry.Exporter.OpenTelemetryProtocol exporter to point at Sentry's OTLP traces endpoint (derived from the DSN). Users call .AddSentryOtlp(dsn) on their TracerProviderBuilder instead of the old .AddSentry().

Propagation context bridging

OtelPropagationContext.cs implements IPropagationContext by reading trace/span IDs from the current Activity (OTel's span representation) rather than from Sentry's internal state. SentryPropagator.cs ensures that Sentry's sentry-trace and baggage headers are still injected into outbound requests alongside the standard W3C traceparent, so that errors, replays, and other Sentry events can be linked to the correct OTLP trace.

Disabling redundant Sentry tracing

SentryOptionsExtensions.cs provides a UseOtlp() method on SentryOptions that sets the instrumenter to OpenTelemetry and disables Sentry's own tracing integrations (the SentryHttpMessageHandler span creation, DiagnosticSource listener, EF interception) to avoid duplicate spans. A new DisableSentryTracing option provides a clean way to turn off Sentry's built-in span creation when OTel is handling it.

GetBaggage safety

The public Hub.GetBaggage() method could throw an ArgumentOutOfRangeException when OTel tracing is active (because the Sentry TraceId is empty — the real trace ID lives on the Activity). This is now handled gracefully: when OTel is enabled, it logs a warning and returns an empty baggage header instead of throwing.

Samples and dependency updates

The ASP.NET Core, Azure Functions, and Console OTel samples are updated to use the new AddSentryOtlp(dsn) / UseOtlp() pattern, and all OTel package references are bumped to 1.15.0 (needed to fix an AOT compilation error with IL3050).

Resolves: #4859 - #4859

github-actions · 2026-02-09T00:54:43Z

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

Features ✨

feat: Add support to send OTEL traces via OTLP by jamescrosswell in #4899

feat: Add network details for session replay on iOS by jamescrosswell in #4891
feat: Add option to exclude certain HTTP statuses from tracing by jamescrosswell in #5034

Fixes 🐛

fix: prevent redundant native exceptions on Android/CoreCLR by jpnurmi in #5127
fix: memory leak when profiling is enabled by jamescrosswell in #5133
fix: prevent redundant native exceptions on iOS by jpnurmi in #5126
fix: prevent redundant native exceptions on Android/Mono by jpnurmi in #4676
- Note: opt in by setting options.Native.ExperimentalOptions.SignalHandlerStrategy to Sentry.Android.SignalHandlerStrategy.ChainAtStart

Dependencies ⬆️

Deps

chore(deps): update Java SDK to v8.39.0 by github-actions in #5137
chore(deps): update Native SDK to v0.13.7 by github-actions in #5136
chore(deps): update Cocoa SDK to v9.10.0 by github-actions in #5132
chore(deps): update Cocoa SDK to v9.9.0 by github-actions in #5115
chore(deps): update Java SDK to v8.38.0 by github-actions in #5124

_{🤖 This preview updates automatically when you update the PR.}

github-actions · 2026-02-09T00:54:50Z

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against d2406ef

codecov · 2026-02-09T21:28:30Z

Codecov Report

❌ Patch coverage is 76.72956% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.09%. Comparing base (c91416f) to head (e057d69).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...y.OpenTelemetry.Exporter/OtelPropagationContext.cs	71.92%	11 Missing and 5 partials ⚠️
src/Sentry/HubExtensions.cs	33.33%	3 Missing and 1 partial ⚠️
...i.CommunityToolkit.Mvvm/SentryOptionsExtensions.cs	0.00%	3 Missing ⚠️
...rc/Sentry.OpenTelemetry/SentryOptionsExtensions.cs	0.00%	3 Missing ⚠️
src/Sentry/SentryGraphQLHttpMessageHandler.cs	0.00%	2 Missing and 1 partial ⚠️
src/Sentry/SentryHttpMessageHandler.cs	0.00%	2 Missing and 1 partial ⚠️
.../Sentry.OpenTelemetry.Exporter/SentryPropagator.cs	50.00%	1 Missing and 1 partial ⚠️
src/Sentry/DynamicSamplingContext.cs	87.50%	1 Missing and 1 partial ⚠️
src/Sentry/Internal/IExternalPropagationContext.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4899      +/-   ##
==========================================
+ Coverage   74.07%   74.09%   +0.02%     
==========================================
  Files         501      506       +5     
  Lines       18113    18247     +134     
  Branches     3521     3564      +43     
==========================================
+ Hits        13417    13520     +103     
- Misses       3837     3857      +20     
- Partials      859      870      +11

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jamescrosswell · 2026-02-09T21:34:59Z

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Odd that we're still seeing this after having moved to conventional commits.

It doesn't look like the danger workflow is aware of our release.yml file or accounts for this in it's logic.

@Flash0ver any ideas what we might be doing wrong?

Flash0ver · 2026-02-09T22:18:56Z

@Flash0ver any ideas what we might be doing wrong?

I'm not sure how to remove the Danger Changelog Missing automation off the top of my head ... I'll look into it tomorrow.

jamescrosswell · 2026-02-18T02:36:54Z

Dang...

ILC : AOT analysis error IL3050: OpenTelemetry.Exporter.OpenTelemetryProtocol.Implementation.ActivityExtensions.CreateRepeatedFieldOfSpanSetCountAction(): Using member 'System.Reflection.Emit.DynamicMethod.DynamicMethod(String,Type,Type[],Module,Boolean)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. Creating a DynamicMethod requires dynamic code. [/Users/runner/work/sentry-dotnet/sentry-dotnet/test/Sentry.TrimTest/Sentry.TrimTest.csproj]

Note

Needs a bump to the Otel package dependencies... since we're putting this in a new Sentry package, it's not a breaking change.

This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [Sentry.Maui](https://sentry.io/) ([source](https://github.com/getsentry/sentry-dotnet)) | nuget | minor | `6.4.1` -> `6.5.0` | --- ### Release Notes <details> <summary>getsentry/sentry-dotnet (Sentry.Maui)</summary> ### [`v6.5.0`](https://github.com/getsentry/sentry-dotnet/blob/HEAD/CHANGELOG.md#650) [Compare Source](getsentry/sentry-dotnet@6.4.1...6.5.0) ##### Features ✨ - feat: Add support to send OTEL traces via OTLP by [@jamescrosswell](https://github.com/jamescrosswell) in [#4899](getsentry/sentry-dotnet#4899) ##### Fixes 🐛 - fix(unity): update `SentryEvent` to have `IsCaptured` to allow dropping screenshots of filtered events by [@JoshuaMoelans](https://github.com/JoshuaMoelans) in [#5162](getsentry/sentry-dotnet#5162) - fix: Memory leak when filtered Activities get garbage collected before `PruneFilteredSpans` runs by [@jamescrosswell](https://github.com/jamescrosswell) in [#5186](getsentry/sentry-dotnet#5186) ##### Dependencies ⬆️ ##### Deps - chore(deps): update Cocoa SDK to v9.12.0 by [@github-actions](https://github.com/github-actions) in [#5179](getsentry/sentry-dotnet#5179) - chore(deps): update CLI to v3.4.1 by [@github-actions](https://github.com/github-actions) in [#5171](getsentry/sentry-dotnet#5171) - chore(deps): update Native SDK to v0.13.8 by [@github-actions](https://github.com/github-actions) in [#5165](getsentry/sentry-dotnet#5165) - chore(deps): update Java SDK to v8.40.0 by [@github-actions](https://github.com/github-actions) in [#5161](getsentry/sentry-dotnet#5161) - chore(deps): update Cocoa SDK to v9.11.0 by [@github-actions](https://github.com/github-actions) in [#5160](getsentry/sentry-dotnet#5160) - chore(deps): update CLI to v3.4.0 by [@github-actions](https://github.com/github-actions) in [#5145](getsentry/sentry-dotnet#5145) - chore(deps): update Java SDK to v8.39.1 by [@github-actions](https://github.com/github-actions) in [#5144](getsentry/sentry-dotnet#5144) ##### Other - perf(logs): avoid string allocation when no parameters are passed by [@Flash0ver](https://github.com/Flash0ver) in [#4697](getsentry/sentry-dotnet#4697) - chore: fix missing skill by [@jamescrosswell](https://github.com/jamescrosswell) in [#5134](getsentry/sentry-dotnet#5134) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 *...

Updated [Sentry.AspNetCore](https://github.com/getsentry/sentry-dotnet) from 6.4.1 to 6.5.0. <details> <summary>Release notes</summary> _Sourced from [Sentry.AspNetCore's releases](https://github.com/getsentry/sentry-dotnet/releases)._ ## 6.5.0 ### Features ✨ - feat: Add support to send OTEL traces via OTLP by @jamescrosswell in [#4899](getsentry/sentry-dotnet#4899) ### Fixes 🐛 - fix(unity): update `SentryEvent` to have `IsCaptured` to allow dropping screenshots of filtered events by @JoshuaMoelans in [#5162](getsentry/sentry-dotnet#5162) - fix: Memory leak when filtered Activities get garbage collected before `PruneFilteredSpans` runs by @jamescrosswell in [#5186](getsentry/sentry-dotnet#5186) ### Dependencies ⬆️ #### Deps - chore(deps): update Cocoa SDK to v9.12.0 by @github-actions in [#5179](getsentry/sentry-dotnet#5179) - chore(deps): update CLI to v3.4.1 by @github-actions in [#5171](getsentry/sentry-dotnet#5171) - chore(deps): update Native SDK to v0.13.8 by @github-actions in [#5165](getsentry/sentry-dotnet#5165) - chore(deps): update Java SDK to v8.40.0 by @github-actions in [#5161](getsentry/sentry-dotnet#5161) - chore(deps): update Cocoa SDK to v9.11.0 by @github-actions in [#5160](getsentry/sentry-dotnet#5160) - chore(deps): update CLI to v3.4.0 by @github-actions in [#5145](getsentry/sentry-dotnet#5145) - chore(deps): update Java SDK to v8.39.1 by @github-actions in [#5144](getsentry/sentry-dotnet#5144) ### Other - perf(logs): avoid string allocation when no parameters are passed by @Flash0ver in [#4697](getsentry/sentry-dotnet#4697) - chore: fix missing skill by @jamescrosswell in [#5134](getsentry/sentry-dotnet#5134) Commits viewable in [compare view](getsentry/sentry-dotnet@6.4.1...6.5.0). </details> Updated [Sentry.Extensions.Logging](https://github.com/getsentry/sentry-dotnet) from 6.4.1 to 6.5.0. <details> <summary>Release notes</summary> _Sourced from [Sentry.Extensions.Logging's releases](https://github.com/getsentry/sentry-dotnet/releases)._ ## 6.5.0 ### Features ✨ - feat: Add support to send OTEL traces via OTLP by @jamescrosswell in [#4899](getsentry/sentry-dotnet#4899) ### Fixes 🐛 - fix(unity): update `SentryEvent` to have `IsCaptured` to allow dropping screenshots of filtered events by @JoshuaMoelans in [#5162](getsentry/sentry-dotnet#5162) - fix: Memory leak when filtered Activities get garbage collected before `PruneFilteredSpans` runs by @jamescrosswell in [#5186](getsentry/sentry-dotnet#5186) ### Dependencies ⬆️ #### Deps - chore(deps): update Cocoa SDK to v9.12.0 by @github-actions in [#5179](getsentry/sentry-dotnet#5179) - chore(deps): update CLI to v3.4.1 by @github-actions in [#5171](getsentry/sentry-dotnet#5171) - chore(deps): update Native SDK to v0.13.8 by @github-actions in [#5165](getsentry/sentry-dotnet#5165) - chore(deps): update Java SDK to v8.40.0 by @github-actions in [#5161](getsentry/sentry-dotnet#5161) - chore(deps): update Cocoa SDK to v9.11.0 by @github-actions in [#5160](getsentry/sentry-dotnet#5160) - chore(deps): update CLI to v3.4.0 by @github-actions in [#5145](getsentry/sentry-dotnet#5145) - chore(deps): update Java SDK to v8.39.1 by @github-actions in [#5144](getsentry/sentry-dotnet#5144) ### Other - perf(logs): avoid string allocation when no parameters are passed by @Flash0ver in [#4697](getsentry/sentry-dotnet#4697) - chore: fix missing skill by @jamescrosswell in [#5134](getsentry/sentry-dotnet#5134) Commits viewable in [compare view](getsentry/sentry-dotnet@6.4.1...6.5.0). </details> Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore <dependency name> major version` will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself) - `@dependabot ignore <dependency name> minor version` will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself) - `@dependabot ignore <dependency name>` will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself) - `@dependabot unignore <dependency name>` will remove all of the ignore conditions of the specified dependency - `@dependabot unignore <dependency name> <ignore condition>` will remove the ignore condition of the specified dependency and ignore conditions </details> --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: James Gunn <james@gunn.io>

ericsampson · 2026-05-08T08:05:36Z

@jamescrosswell this is awesome. One thing I haven't figured out yet, what is the intended migration path for customers existing TracesSampler ? In an ideal world the answer is "it's automated respected by the OTel stuff because we do magic for you in our impl", but second best is "here's docs on how to migrate to the intended X pattern yourself". Thanks!

Added support to send OTEL traces via OTLP

2122abb

Resolves: #4859 - #4859

jamescrosswell commented Feb 9, 2026

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jamescrosswell commented Feb 9, 2026

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jamescrosswell mentioned this pull request Feb 9, 2026

OTLP integration #4859

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Flash0ver reviewed Feb 9, 2026

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Comment thread src/Sentry.OpenTelemetry/SentryOptionsExtensions.cs Outdated

Added OTEL propagation context to link OTEL spans to events etc.

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Flash0ver reviewed Feb 9, 2026

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Comment thread src/Sentry.OpenTelemetry/TracerProviderBuilderExtensions.cs Outdated

Disable Sentry tracing instrumentation if OTEL is enabled

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jamescrosswell commented Feb 10, 2026

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Comment thread src/Sentry/Internal/Hub.cs Outdated

Revert to classic extension methods

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Flash0ver mentioned this pull request Feb 10, 2026

ci(danger): disable Danger check #4910

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jamescrosswell commented Feb 11, 2026

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jamescrosswell added 2 commits February 12, 2026 13:35

Added option to disable sentry tracing

907850b

Added some new tests... found some new issues

6f8312d

jamescrosswell commented Feb 12, 2026

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Merge remote-tracking branch 'origin/main' into oltp-integration

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jamescrosswell mentioned this pull request Feb 18, 2026

Bump to >= 1.11.0 of the OpenTelemetry dependencies #4931

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jamescrosswell added 2 commits February 18, 2026 15:21

Prevent Hub.GetBaggage from throwing an exception

1ea156a

Fix tests

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jamescrosswell mentioned this pull request Feb 18, 2026

Mark POTEL init overloads as obsolete prior to phasing these out #4932

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jamescrosswell added 2 commits February 18, 2026 16:01

Bump to Otel 1.15.0 to address IL3050 error for AOT compilation

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changelog

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Bump Sentry from 6.4.1 to 6.5.0 microting/eform-angular-outer-inner-resource-plugin#1354

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Bump Sentry from 6.4.1 to 6.5.0 microting/eform-service-backendconfiguration-plugin#521

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ci(craft): temporary remove new NuGet package for initial release #5192

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Bump Sentry from 6.4.0 to 6.5.0 maximilian-hammerl/post-exporter#201

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publish: getsentry/sentry-dotnet@6.5.0 getsentry/publish#8081

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docs: add Sentry.OpenTelemetry.Exporter to README.md #5194

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chore(deps): bump Sentry 6.3.2 -> 6.5.0 prosody-events/prosody-cs#17

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Bump Sentry from 6.4.1 to 6.5.0 microting/eform-angular-frontend#7871

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Bump Sentry.Serilog from 5.16.2 to 6.5.0 GDATASoftwareAG/motornet#1625

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deps: Bump the nuget-patch-minor group with 3 updates daqifi/daqifi-desktop#526

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Problem

Solution

New package with OTLP exporter wiring

Propagation context bridging

Disabling redundant Sentry tracing

GetBaggage safety

Samples and dependency updates

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Semver Impact of This PR

Features ✨

Fixes 🐛

Dependencies ⬆️

Deps

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