not
d5dfbdc0b2
## What & why S-16c, the last of the S-16 (#17) split, on top of the backplane (#122) and distributed tracing (#123). The five .NET services now expose OpenTelemetry **metrics** in Prometheus format at `/metrics`; Prometheus scrapes each (one job per service); and Grafana ships a pre-built **Request path — golden signals** dashboard (traffic / errors / latency / saturation), split by service. Closes #124 ### How - Each service adds `.WithMetrics(AddAspNetCoreInstrumentation + AddHttpClientInstrumentation + AddMeter("System.Runtime") + AddPrometheusExporter)` and maps `/metrics`. Same shape as the S-16b tracing wiring already in these `Program.cs` files. - `infra/observability/prometheus/prometheus.yml`: one scrape job per service (`acl`, `domain`, `bff`, `event-subscriber`, `projection-api`), reached by compose service name. - `infra/observability/grafana/provisioning/dashboards/`: dashboard provider + `golden-signals.json` (baked into the Grafana image by the existing `COPY provisioning/`). - `verify-metrics` (new CI verify-stack step + Makefile target): generates BFF traffic and asserts Prometheus scraped the golden-signal metric from every service. Mirrors `verify-tracing`. ### Dependency (CLAUDE.md §13/§14) Adds `OpenTelemetry.Exporter.Prometheus.AspNetCore` `1.17.0-beta.1` (matched to the `1.17.0` core already in use). It gives the OTel-native `/metrics` pull endpoint; replacing it would mean hand-rolling Prometheus exposition over a `MeterListener`; the risk is that it is a **prerelease** package (the whole OTel .NET Prometheus line is `-beta`) — pinned, wired only in `Program.cs`, and gated by `verify-metrics`. Recorded in **ADR-0024**. ## Definition of Done - [x] Linked Gitea issue (#124). - [x] Failing test committed before the implementation (`test(bff): /metrics exposes http-server request duration`). - [x] Implementation makes the test pass. - [ ] CI green — pending Gitea Actions run. - [x] `docker compose up` reaches green health within 3 min (backplane images unchanged in shape; not on the health gate, ADR-0023). - [x] Docs updated — demo-script S-16c entry. - [x] ADR added — ADR-0024. - [x] Demo note in `docs/demo-script.md`. ## Notes for reviewers - `/health` polls are counted as traffic (metrics aren't path-filtered, unlike traces). Fine for a demo dashboard and honest — real load stacks on top. - `projection-api` has no Stryker config (unchanged); the four mutated services carry the metrics wiring in `Program.cs`, same as the merged S-16b tracing code. - Metric names verified against a live service: `http_server_request_duration_seconds{,_bucket,_count}`, label `http_response_status_code`, `dotnet_process_cpu_time_seconds_total`. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Reviewed-on: #129
23 lines
897 B
XML
23 lines
897 B
XML
<Project Sdk="Microsoft.NET.Sdk.Web">
|
|
|
|
<ItemGroup>
|
|
<ProjectReference Include="..\Acl.Application\Acl.Application.csproj" />
|
|
<ProjectReference Include="..\Acl.Infrastructure\Acl.Infrastructure.csproj" />
|
|
</ItemGroup>
|
|
|
|
<ItemGroup>
|
|
<PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.17.0" />
|
|
<PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.17.0-beta.1" />
|
|
<PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.17.0" />
|
|
<PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.17.0" />
|
|
<PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.17.0" />
|
|
</ItemGroup>
|
|
|
|
<PropertyGroup>
|
|
<TargetFramework>net10.0</TargetFramework>
|
|
<Nullable>enable</Nullable>
|
|
<ImplicitUsings>enable</ImplicitUsings>
|
|
</PropertyGroup>
|
|
|
|
</Project>
|