Qyl.Telemetry.SemanticConventions 9.0.0

Qyl.Telemetry.SemanticConventions

.NET packages generated by Weaver from one semantic-convention registry. registry/manifest.yaml is the single source of truth for the upstream pins: it names the pinned core registry and the separately pinned development GenAI registry as dependencies, and qyl's own YAML sits next to them under registry/.

This is the one artifact both halves of qyl share: what an application emits and what the collector recognizes are generated from the same registry, so qyl cannot emit an attribute name its own collector does not know.

Packages

dotnet add package Qyl.Telemetry.SemanticConventions

All three packages are published on nuget.org; the package version is defined in Directory.Build.props. Incubating APIs intentionally track unstable upstream conventions and may change between minor releases.

Coming from Qyl.OpenTelemetry.SemanticConventions? These are new package IDs, not new versions of the old ones. The Qyl.OpenTelemetry.SemanticConventions* IDs stop at 4.0.0 and receive no further releases; change to the Qyl.Telemetry.* family. The new family began at 1.0.0 and now follows its own monotonic release line.

How the surface is generated

Weaver resolves the three registry layers itself and the Jinja templates under templates/ emit the C# directly. There is no intermediate JSON and no compile-time generator: the output is committed and CI checks it with git diff, the same shape as the check-generated target in opentelemetry-weaver-examples/basic.

registry/  (manifest.yaml: core + genai dependencies; qyl/ and vendor/ next to them)
        |
        v
scripts/generate.sh -> weaver registry generate --v2 --include-unreferenced
        |
        +----> src/Qyl.Telemetry.SemanticConventions/Generated/            (stable tier)
        +----> src/Qyl.Telemetry.SemanticConventions.Incubating/Generated/ (the other tiers)
        +----> src/…Analyzers/SemconvRegistryFacts.g.cs, SemconvDeprecations.g.cs
        +----> generated/pins.props                   (the pins, for MSBuild)
        +----> DocsGenerator ------------------------> analyzer documentation

Each package's Generated/ directory holds one file per registry root for six kinds: Attributes, Activities, Metrics, Spans, Events and Entities. Attributes is the one kind both packages carry in full: the stable package the stable rows plus the deprecated migration symbols, the incubating package every key, at the byte-identical shape the collector reads by reflection. For the other five the two packages are disjoint. The stable package carries the stable and deprecated rows as {Root}ActivityExtensions, {Root}MetricDefinitions and siblings; the incubating package carries only the rows the stable package does not, as {Root}IncubatingActivityExtensions, {Root}IncubatingMetricDefinitions and siblings, so a consumer may using both namespaces without an ambiguous-call error. A registry root with no non-stable rows gets no incubating type at all. A definition generated in either package is an instance of the same public type, so it can be handed between libraries and applications.

Two gates keep the committed output honest. scripts/check-generated.sh regenerates everything with the pinned Weaver and fails on git diff; CI runs it before the build. GeneratedSurfaceTests pins the SHA-256 of every generated file, so a mismatch names each differing, missing or extra one — only REGEN_SNAPSHOTS rewrites it.

Because the resolved v2 registry flattens registry.* groups into the catalog and drops their group annotations, scripts/generate.sh reads the two lists that live only in annotations — the scope names qyl constructs and the vendor ActivitySource names — out of the same YAML and hands them to the templates as parameters. registry/ stays the only source.

No template parameter has a default. The three schema URLs are registry facts the filters read off the materialized registry itself; the Weaver version, the core tag, the core commit and the genai commit reach the templates only from Version.props and registry/manifest.yaml, through scripts/generate.sh. A bare weaver registry generate therefore writes error: missing param <name> into the header instead of a stale pin, and scripts/check-generated.sh fails on it.

Registry policies

The guards the Python merge used to carry are Rego. registry/policies runs against the plain resolved shape, the only one that keeps group annotations: every attribute qyl declares is in qyl.*, and every vendor group has its metadata sibling naming the library, version, repository, ref, licence and ActivitySources, with a file-and-line note on every attribute. registry/policies-v2 runs against the materialized v2 registry, the only one that carries the full dependency catalog: qyl.attribute.namespace enumerates every root namespace plus other, there is exactly one GenAI token-usage metric and exactly one unconstrained execute_tool span, and every GenAI any attribute carries a JSON Schema annotation.

Vendor models

registry/vendor/ owns one more thing than qyl's own vocabulary: the keys a pinned third-party library emits on its own ActivitySource or Meter and that upstream semantic conventions do not define. The collector's attribute allowlist is generated from the registry, so a key nothing declares is dropped at ingest — which is exactly what happens the moment an application stops wrapping a library and subscribes to its native source instead.

A policy refuses any attribute outside qyl.* in the qyl group. There is no prefix allowlist: one file per library names the library, the exact version qyl pins, the repository and tag its attributes were read at, the licence, and the ActivitySource names it emits on — and every attribute in it carries the file and line of the library that sets the key. A vendor file that cannot answer those questions fails weaver registry check. Vendor rows are development stability and are identified by their registry provenance path.

The ActivitySource names themselves are registry facts too: they ride as vendor annotations, ship as QylTelemetryNames.VendorActivitySources, and join QYL0200's allowlist, so AddSource and a span processor's source match need no literal.

Vendor keys are tags. The application never renames one and the collector passes it through: Incubating.Mapping.AttributeMapping.IsVendorPassThrough is that list, next to TryGetRename (every deprecated key resolved transitively to its final live replacement) and NamespaceOf (the closed namespace set the dropped-attribute counter is broken down by).

This registry carries telemetry vocabulary only. Qyl's client-visible product requests, responses, stream events, and errors remain owned by qyl-api-schema.

Analyzer documentation

The analyzer project exposes a generated rule catalog and ships as the third released package; eng/release/verify-packages.sh proves it installs into a clean consumer alongside the other two.

The generated analyzer reference includes the index, migration catalog, and per-rule pages. Consumer severity can be configured through OtelSemConvAnalysisMode:

<PropertyGroup>
  <OtelSemConvAnalysisMode>AllAsErrors</OtelSemConvAnalysisMode>
</PropertyGroup>

Supported values are Default, AllAsErrors, and Disabled. If the property is unset, the consumer's editorconfig remains authoritative.

QYL0008 in instrumentation libraries

QYL0008 flags a direct reference to an *.SemanticConventions.Incubating member from a library project, because the library would then pin every downstream consumer to its exact package version. Copying the value into the library is the mitigation, and the analyzer stays silent for all three copy forms plus a method-local const:

private const string MessagingSystem = MessagingAttributes.System;
private static readonly string OperationType = MessagingAttributes.OperationType;
private static readonly string[] Copies = [MessagingAttributes.OperationName];

public static void Tag(Activity activity)
{
    const string destination = MessagingAttributes.DestinationName;
    activity.SetTag(destination, "orders");
}

An instrumentation library that deliberately version-locks with the incubating tier — Qyl.Telemetry.AutoInstrumentation ships in lockstep with this package family — opts the whole project out instead of copying every constant:

<Project>
  <PropertyGroup>
    <OtelSemConvInstrumentationLibrary>true</OtelSemConvInstrumentationLibrary>
  </PropertyGroup>
</Project>

The property is opt-in and per-project; QYL0008 keeps reporting everywhere it is unset.

Build and test

weaver registry check -r registry
./scripts/check-generated.sh        # regenerates from registry/ and fails on drift
dotnet build Qyl.Telemetry.SemanticConventions.slnx -c Release
dotnet run --project tests/Qyl.Telemetry.SemanticConventions.Pipeline.Tests -c Release
python3 -m unittest discover --start-directory tests/scripts --pattern 'test_*.py'

weaver must be the version Version.props pins; scripts/generate.sh refuses to run against any other. dotnet test does not drive these projects: they are Microsoft.Testing.Platform projects and the .NET 10 SDK dropped the VSTest bridge, so the runner is dotnet run --project <test project>, which is what CI uses.

Publishing uses GitHub Actions OIDC trusted publishing. No long-lived NuGet API key is stored in the repository.

License

Apache-2.0