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feat(SlimfaasMcp): Add prometheus exporter #213

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feat(SlimfaasMcp): Add prometheus exporter #213

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532ee93
feat(SlimfaasMcp): Add prometheus exporter
Silthian Dec 18, 2025
a81de27
Merge branch 'main' into feature/add-prometheus-exporter-to-slimfaasmcp
guillaume-chervet Dec 19, 2025
29ddd3d
Merge branch 'main' into feature/add-prometheus-exporter-to-slimfaasmcp
guillaume-chervet Jan 7, 2026
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2 changes: 2 additions & 0 deletions src/SlimFaasMcp/Extensions/OpenTelemetryExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,8 @@ private static void ConfigureMetric(OpenTelemetryConfig config, MeterProviderBui
: _ => { }
);

meterProviderBuilder.AddPrometheusExporter();

if (config.EnableConsoleExporter)
{
meterProviderBuilder.AddConsoleExporter();
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2 changes: 2 additions & 0 deletions src/SlimFaasMcp/Program.cs
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Expand Up @@ -79,6 +79,8 @@
app.UseCors("SlimFaasMcpCors");
app.UseMiddleware<RequestLoggingMiddleware>();

app.MapPrometheusScrapingEndpoint();

app.MapGet("/mcp", () => Results.StatusCode(StatusCodes.Status405MethodNotAllowed));

/* -------------------------------------------------------------------------
Expand Down Expand Up @@ -357,7 +359,7 @@
// ⬇️ applique le même wrapping pour que l’UI annonce le bon schéma
foreach (var t in tools)
if (HasKnownOutputSchema(t.OutputSchema))
t.OutputSchema = OutputSchemaWrapper.WrapForStructuredContent(t.OutputSchema);

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GitHub Actions / build_slimfaas_mcp_aot (macos-14, osx-arm64, SlimFaasMcp-osx-arm64.zip) 

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Possible null reference assignment.
else
t.OutputSchema = new JsonObject();
}
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1 change: 1 addition & 0 deletions src/SlimFaasMcp/SlimFaasMcp.csproj
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Expand Up @@ -16,6 +16,7 @@
<PackageReference Include="OpenTelemetry" Version="1.14.0" />
<PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.14.0" />
<PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.14.0" />
<PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.14.0-beta.1" />
<PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.14.0" />
<PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.14.0" />
<PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.14.0" />
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