feat(health): scaffold ZB.MOM.WW.Health solution + Task 4 (tags + three-tier MapZbHealth)

Consolidates the library into the scadaproj repo (matching the ZB.MOM.WW.Auth
convention — tracked in-parent, not a nested repo). 3 dependency-split packages
(core / .Akka / .EntityFrameworkCore) + 3 test projects, .slnx, central PM.
Task 4: ZbHealthTags + MapZbHealth (/health/ready,/active,/healthz). 8/8 tests.
This commit is contained in:
Joseph Doherty
2026-06-01 06:35:39 -04:00
parent 07d5907258
commit 18be42d0e2
14 changed files with 941 additions and 0 deletions
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<Project>
<PropertyGroup>
<TargetFramework>net10.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<LangVersion>latest</LangVersion>
<Version>0.1.0</Version>
<ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
</PropertyGroup>
</Project>
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<Project>
<PropertyGroup>
<ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
</PropertyGroup>
<ItemGroup>
<!-- Akka -->
<PackageVersion Include="Akka.Cluster" Version="1.5.62" />
<PackageVersion Include="Akka.TestKit.Xunit2" Version="1.5.62" />
<!-- Health Checks / ASP.NET Core -->
<PackageVersion Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="10.0.7" />
<PackageVersion Include="AspNetCore.HealthChecks.UI.Client" Version="9.0.0" />
<PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.7" />
<!-- gRPC -->
<PackageVersion Include="Grpc.Net.Client" Version="2.71.0" />
<!-- Entity Framework Core -->
<PackageVersion Include="Microsoft.EntityFrameworkCore" Version="10.0.7" />
<PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.7" />
<PackageVersion Include="Microsoft.EntityFrameworkCore.InMemory" Version="10.0.7" />
<!-- Test -->
<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
<PackageVersion Include="xunit" Version="2.9.3" />
<PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
<PackageVersion Include="coverlet.collector" Version="6.0.4" />
</ItemGroup>
</Project>
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<Solution>
<Folder Name="/src/">
<Project Path="src/ZB.MOM.WW.Health.Akka/ZB.MOM.WW.Health.Akka.csproj" />
<Project Path="src/ZB.MOM.WW.Health.EntityFrameworkCore/ZB.MOM.WW.Health.EntityFrameworkCore.csproj" />
<Project Path="src/ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj" />
</Folder>
<Folder Name="/tests/">
<Project Path="tests/ZB.MOM.WW.Health.Akka.Tests/ZB.MOM.WW.Health.Akka.Tests.csproj" />
<Project Path="tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests.csproj" />
<Project Path="tests/ZB.MOM.WW.Health.Tests/ZB.MOM.WW.Health.Tests.csproj" />
</Folder>
</Solution>
@@ -0,0 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>true</IsPackable>
<PackageId>ZB.MOM.WW.Health.Akka</PackageId>
<Authors>ZB.MOM.WW</Authors>
<Description>Akka.Cluster health-check extensions for the ZB.MOM.WW SCADA family.</Description>
<PackageProjectUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</PackageProjectUrl>
<RepositoryUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</RepositoryUrl>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\ZB.MOM.WW.Health\ZB.MOM.WW.Health.csproj" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="Akka.Cluster" />
</ItemGroup>
</Project>
@@ -0,0 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>true</IsPackable>
<PackageId>ZB.MOM.WW.Health.EntityFrameworkCore</PackageId>
<Authors>ZB.MOM.WW</Authors>
<Description>Entity Framework Core health-check extensions for the ZB.MOM.WW SCADA family.</Description>
<PackageProjectUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</PackageProjectUrl>
<RepositoryUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</RepositoryUrl>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\ZB.MOM.WW.Health\ZB.MOM.WW.Health.csproj" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" />
</ItemGroup>
</Project>
@@ -0,0 +1,29 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>true</IsPackable>
<PackageId>ZB.MOM.WW.Health</PackageId>
<Authors>ZB.MOM.WW</Authors>
<Description>Core ASP.NET Core health-check extensions for the ZB.MOM.WW SCADA family.</Description>
<PackageProjectUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</PackageProjectUrl>
<RepositoryUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health</RepositoryUrl>
</PropertyGroup>
<ItemGroup>
<!--
Microsoft.AspNetCore.App is a shared framework, not a NuGet package. It brings in the
ASP.NET Core health-checks middleware, IHealthCheck, HealthCheckService, and the full
Microsoft.Extensions.* surface. Referencing the shared framework is the supported path
for net10.0 libraries that target ASP.NET Core.
-->
<FrameworkReference Include="Microsoft.AspNetCore.App" />
</ItemGroup>
<ItemGroup>
<!-- Abstractions for IHealthCheck / HealthCheckResult (also transitively provided by the
framework ref above, but declared explicitly so the dependency is visible to consumers). -->
<PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" />
<PackageReference Include="Grpc.Net.Client" />
</ItemGroup>
</Project>
@@ -0,0 +1,58 @@
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.Diagnostics.HealthChecks;
namespace ZB.MOM.WW.Health;
/// <summary>
/// Maps the canonical ZB.MOM.WW three-tier health endpoints in one call.
/// </summary>
public static class ZbHealthEndpointExtensions
{
/// <summary>
/// Maps the three health tiers:
/// <list type="bullet">
/// <item><description><c>/health/ready</c> — runs only checks tagged <see cref="ZbHealthTags.Ready"/>.</description></item>
/// <item><description><c>/health/active</c> — runs only checks tagged <see cref="ZbHealthTags.Active"/>.</description></item>
/// <item><description><c>/healthz</c> — bare process liveness; runs no checks (always 200 while the process is up).</description></item>
/// </list>
/// All three are anonymous. Status mapping is the ASP.NET Core default:
/// Healthy/Degraded → 200, Unhealthy → 503.
/// </summary>
/// <remarks>
/// Does NOT call <c>services.AddHealthChecks()</c> — the caller registers probes and their tags.
/// The response writer is the framework default (plain-text status); a later task swaps in a
/// canonical JSON writer via <see cref="HealthCheckOptions.ResponseWriter"/> (see <paramref name="options"/>).
/// </remarks>
/// <returns>
/// The <see cref="IEndpointConventionBuilder"/> for the readiness (<c>/health/ready</c>) endpoint.
/// A single tier is returned (rather than a composite) to keep the API simple; conventions
/// applied to the result affect only the readiness endpoint.
/// </returns>
public static IEndpointConventionBuilder MapZbHealth(
this IEndpointRouteBuilder endpoints,
ZbHealthEndpointOptions? options = null)
{
ArgumentNullException.ThrowIfNull(endpoints);
options ??= new ZbHealthEndpointOptions();
var ready = endpoints.MapHealthChecks(options.ReadyPath, new HealthCheckOptions
{
Predicate = static c => c.Tags.Contains(ZbHealthTags.Ready),
}).AllowAnonymous();
endpoints.MapHealthChecks(options.ActivePath, new HealthCheckOptions
{
Predicate = static c => c.Tags.Contains(ZbHealthTags.Active),
}).AllowAnonymous();
// Liveness: run no checks. The endpoint returns 200 as long as the process can respond.
endpoints.MapHealthChecks(options.LivePath, new HealthCheckOptions
{
Predicate = static _ => false,
}).AllowAnonymous();
return ready;
}
}
@@ -0,0 +1,17 @@
namespace ZB.MOM.WW.Health;
/// <summary>
/// Options for <see cref="ZbHealthEndpointExtensions.MapZbHealth"/>. Lets callers override the
/// three tier route paths. The default paths match the ZB.MOM.WW health contract.
/// </summary>
public sealed class ZbHealthEndpointOptions
{
/// <summary>Path for the readiness tier (runs only checks tagged <see cref="ZbHealthTags.Ready"/>).</summary>
public string ReadyPath { get; set; } = "/health/ready";
/// <summary>Path for the active-node tier (runs only checks tagged <see cref="ZbHealthTags.Active"/>).</summary>
public string ActivePath { get; set; } = "/health/active";
/// <summary>Path for the bare liveness tier (runs no checks; 200 while the process is up).</summary>
public string LivePath { get; set; } = "/healthz";
}
@@ -0,0 +1,19 @@
namespace ZB.MOM.WW.Health;
/// <summary>
/// Canonical health-check tag constants for the ZB.MOM.WW three-tier health pattern.
/// Use these when registering checks, e.g.
/// <c>AddCheck("db", check, tags: [ZbHealthTags.Ready])</c>, so that
/// <see cref="ZbHealthEndpointExtensions.MapZbHealth"/> routes each check to the right tier.
/// </summary>
public static class ZbHealthTags
{
/// <summary>Readiness checks (dependencies needed before the node can serve traffic).</summary>
public const string Ready = "ready";
/// <summary>Active-node checks (leader / active-singleton gating).</summary>
public const string Active = "active";
/// <summary>Liveness — process is up. Reserved tag; the liveness endpoint runs no checks.</summary>
public const string Live = "live";
}
@@ -0,0 +1,23 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="coverlet.collector" />
<PackageReference Include="Microsoft.NET.Test.Sdk" />
<PackageReference Include="xunit" />
<PackageReference Include="xunit.runner.visualstudio" />
<PackageReference Include="Akka.TestKit.Xunit2" />
</ItemGroup>
<ItemGroup>
<Using Include="Xunit" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\src\ZB.MOM.WW.Health.Akka\ZB.MOM.WW.Health.Akka.csproj" />
</ItemGroup>
</Project>
@@ -0,0 +1,24 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="coverlet.collector" />
<PackageReference Include="Microsoft.NET.Test.Sdk" />
<PackageReference Include="xunit" />
<PackageReference Include="xunit.runner.visualstudio" />
<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" />
</ItemGroup>
<ItemGroup>
<Using Include="Xunit" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\src\ZB.MOM.WW.Health.EntityFrameworkCore\ZB.MOM.WW.Health.EntityFrameworkCore.csproj" />
</ItemGroup>
</Project>
@@ -0,0 +1,165 @@
using System.Net;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.Diagnostics.HealthChecks;
using Microsoft.Extensions.DependencyInjection;
using ZB.MOM.WW.Health;
namespace ZB.MOM.WW.Health.Tests;
/// <summary>
/// Verifies the three-tier <see cref="ZbHealthEndpointExtensions.MapZbHealth"/> convention:
/// each endpoint runs only the checks tagged for its tier, /healthz runs nothing, and the
/// standard ASP.NET HealthChecks status-to-HTTP mapping (Healthy/Degraded → 200, Unhealthy → 503)
/// holds per tier.
/// </summary>
public sealed class TierMappingTests
{
/// <summary>
/// An <see cref="IHealthCheck"/> test double that records each invocation and returns a
/// configurable result, so tests can assert which checks actually ran per tier.
/// </summary>
private sealed class RecordingHealthCheck : IHealthCheck
{
private readonly HealthStatus _status;
private int _invocations;
public RecordingHealthCheck(HealthStatus status) => _status = status;
public int Invocations => Volatile.Read(ref _invocations);
public Task<HealthCheckResult> CheckHealthAsync(
HealthCheckContext context,
CancellationToken cancellationToken = default)
{
Interlocked.Increment(ref _invocations);
return Task.FromResult(new HealthCheckResult(_status));
}
}
private static async Task<(HttpResponseMessage Response, RecordingHealthCheck Ready, RecordingHealthCheck Active)>
RunAsync(string path, HealthStatus readyStatus = HealthStatus.Healthy, HealthStatus activeStatus = HealthStatus.Healthy)
{
var ready = new RecordingHealthCheck(readyStatus);
var active = new RecordingHealthCheck(activeStatus);
var builder = WebApplication.CreateBuilder();
builder.WebHost.UseTestServer();
builder.Services.AddHealthChecks()
.AddCheck("ready-check", ready, tags: new[] { ZbHealthTags.Ready })
.AddCheck("active-check", active, tags: new[] { ZbHealthTags.Active });
await using var app = builder.Build();
app.MapZbHealth();
await app.StartAsync();
var client = app.GetTestClient();
var response = await client.GetAsync(path);
return (response, ready, active);
}
[Fact]
public async Task ReadyEndpoint_RunsOnlyReadyCheck()
{
var (response, ready, active) = await RunAsync("/health/ready");
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
Assert.Equal(1, ready.Invocations);
Assert.Equal(0, active.Invocations);
}
[Fact]
public async Task ActiveEndpoint_RunsOnlyActiveCheck()
{
var (response, ready, active) = await RunAsync("/health/active");
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
Assert.Equal(0, ready.Invocations);
Assert.Equal(1, active.Invocations);
}
[Fact]
public async Task LivenessEndpoint_RunsNoChecks_AndReturns200()
{
var (response, ready, active) = await RunAsync("/healthz");
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
Assert.Equal(0, ready.Invocations);
Assert.Equal(0, active.Invocations);
}
[Fact]
public async Task ReadyEndpoint_Healthy_Returns200()
{
var (response, _, _) = await RunAsync("/health/ready", readyStatus: HealthStatus.Healthy);
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
}
[Fact]
public async Task ReadyEndpoint_Unhealthy_Returns503()
{
var (response, _, _) = await RunAsync("/health/ready", readyStatus: HealthStatus.Unhealthy);
Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
}
[Fact]
public async Task ActiveEndpoint_Unhealthy_Returns503()
{
var (response, _, _) = await RunAsync("/health/active", activeStatus: HealthStatus.Unhealthy);
Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
}
[Fact]
public async Task LivenessEndpoint_UnaffectedByUnhealthyChecks()
{
// Even though every registered check is Unhealthy, /healthz runs none of them
// (predicate _ => false) and stays 200 as long as the process is up.
var (response, ready, active) = await RunAsync(
"/healthz", readyStatus: HealthStatus.Unhealthy, activeStatus: HealthStatus.Unhealthy);
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
Assert.Equal(0, ready.Invocations);
Assert.Equal(0, active.Invocations);
}
[Fact]
public async Task Options_OverrideRoutePaths()
{
var ready = new RecordingHealthCheck(HealthStatus.Healthy);
var active = new RecordingHealthCheck(HealthStatus.Healthy);
var builder = WebApplication.CreateBuilder();
builder.WebHost.UseTestServer();
builder.Services.AddHealthChecks()
.AddCheck("ready-check", ready, tags: new[] { ZbHealthTags.Ready })
.AddCheck("active-check", active, tags: new[] { ZbHealthTags.Active });
await using var app = builder.Build();
app.MapZbHealth(new ZbHealthEndpointOptions
{
ReadyPath = "/custom/ready",
ActivePath = "/custom/active",
LivePath = "/custom/live",
});
await app.StartAsync();
var client = app.GetTestClient();
var readyResponse = await client.GetAsync("/custom/ready");
Assert.Equal(HttpStatusCode.OK, readyResponse.StatusCode);
Assert.Equal(1, ready.Invocations);
Assert.Equal(0, active.Invocations);
var liveResponse = await client.GetAsync("/custom/live");
Assert.Equal(HttpStatusCode.OK, liveResponse.StatusCode);
// The default paths must no longer be mapped when overridden.
var defaultReady = await client.GetAsync("/health/ready");
Assert.Equal(HttpStatusCode.NotFound, defaultReady.StatusCode);
}
}
@@ -0,0 +1,28 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="coverlet.collector" />
<PackageReference Include="Microsoft.NET.Test.Sdk" />
<PackageReference Include="xunit" />
<PackageReference Include="xunit.runner.visualstudio" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" />
</ItemGroup>
<ItemGroup>
<Using Include="Xunit" />
</ItemGroup>
<ItemGroup>
<!-- WebApplicationFactory requires the full ASP.NET Core shared framework -->
<FrameworkReference Include="Microsoft.AspNetCore.App" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\src\ZB.MOM.WW.Health\ZB.MOM.WW.Health.csproj" />
</ItemGroup>
</Project>