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Add OTEL tracing support for Wiremock + automatic OTEL for Aspire integration (#1418)

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* Update aspire to 13.1 (examples + code)

Allows usage of aspire CLI which is very useful for dev in codespaces (for my next PR).

* Add OTEL support

* Initial PR feedback

* PR feedback

* PR feedback

* PR feedback

* Cleanup.

* Cleanup

* Fix

* Fix

* Rename stuff around to be more accurate

* PR feedback

* Update WireMock.Net.OpenTelemetry.csproj

Update <Authors>

* PR feedback parser

* PR feedback package versions

* Status code feedback.

* Update preprocessor directives to to Activity Tracing instead of OpenTelemetry. Is more descriptive.

* Add tests

* Improve tests

---------

Co-authored-by: Stef Heyenrath <Stef.Heyenrath@gmail.com>
This commit is contained in:
Petr Houška
2026-01-18 17:22:36 +01:00
committed by GitHub
parent abe996671e
commit 4525c61847
38 changed files with 2057 additions and 9 deletions
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30
src/WireMock.Net.Aspire/WireMockServerArguments.cs
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@@ -79,6 +79,22 @@ public class WireMockServerArguments
/// </summary>
public Dictionary<string, string[]> ProtoDefinitions { get; set; } = [];
/// <summary>
/// Gets or sets a value indicating whether OpenTelemetry tracing is enabled.
/// When enabled, WireMock.Net will emit distributed traces for request processing.
/// Default value is <c>false</c>.
/// </summary>
public bool OpenTelemetryEnabled { get; set; }
/// <summary>
/// Gets or sets the OTLP exporter endpoint URL.
/// When set, traces will be exported to this endpoint using the OTLP protocol.
/// Example: "http://localhost:4317" for gRPC or "http://localhost:4318" for HTTP.
/// If not set, the OTLP exporter will use the <c>OTEL_EXPORTER_OTLP_ENDPOINT</c> environment variable,
/// or fall back to the default endpoint (<c>http://localhost:4317</c> for gRPC).
/// </summary>
public string? OpenTelemetryOtlpExporterEndpoint { get; set; }
/// <summary>
/// Add an additional Urls on which WireMock should listen.
/// </summary>
@@ -138,6 +154,20 @@ public class WireMockServerArguments
Add(args, "--WatchStaticMappingsInSubdirectories", "true");
}
if (OpenTelemetryEnabled)
{
// Enable activity tracing (creates System.Diagnostics.Activity objects)
Add(args, "--ActivityTracingEnabled", "true");
// Enable OpenTelemetry exporter
Add(args, "--OpenTelemetryEnabled", "true");
if (!string.IsNullOrEmpty(OpenTelemetryOtlpExporterEndpoint))
{
Add(args, "--OpenTelemetryOtlpExporterEndpoint", OpenTelemetryOtlpExporterEndpoint);
}
}
if (AdditionalUrls.Count > 0)
{
Add(args, "--Urls", $"http://*:{HttpContainerPort} {string.Join(' ', AdditionalUrls)}");