From 18be42d0e2d625739444445820052c8c8d6a211f Mon Sep 17 00:00:00 2001 From: Joseph Doherty Date: Mon, 1 Jun 2026 06:35:39 -0400 Subject: [PATCH] feat(health): scaffold ZB.MOM.WW.Health solution + Task 4 (tags + three-tier MapZbHealth) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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. --- ZB.MOM.WW.Health/.gitignore | 482 ++++++++++++++++++ ZB.MOM.WW.Health/Directory.Build.props | 12 + ZB.MOM.WW.Health/Directory.Packages.props | 32 ++ ZB.MOM.WW.Health/ZB.MOM.WW.Health.slnx | 12 + .../ZB.MOM.WW.Health.Akka.csproj | 20 + ...B.MOM.WW.Health.EntityFrameworkCore.csproj | 20 + .../ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj | 29 ++ .../ZbHealthEndpointExtensions.cs | 58 +++ .../ZbHealthEndpointOptions.cs | 17 + .../src/ZB.MOM.WW.Health/ZbHealthTags.cs | 19 + .../ZB.MOM.WW.Health.Akka.Tests.csproj | 23 + ...WW.Health.EntityFrameworkCore.Tests.csproj | 24 + .../TierMappingTests.cs | 165 ++++++ .../ZB.MOM.WW.Health.Tests.csproj | 28 + 14 files changed, 941 insertions(+) create mode 100644 ZB.MOM.WW.Health/.gitignore create mode 100644 ZB.MOM.WW.Health/Directory.Build.props create mode 100644 ZB.MOM.WW.Health/Directory.Packages.props create mode 100644 ZB.MOM.WW.Health/ZB.MOM.WW.Health.slnx create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.Akka/ZB.MOM.WW.Health.Akka.csproj create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.EntityFrameworkCore/ZB.MOM.WW.Health.EntityFrameworkCore.csproj create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointExtensions.cs create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointOptions.cs create mode 100644 ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthTags.cs create mode 100644 ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Akka.Tests/ZB.MOM.WW.Health.Akka.Tests.csproj create mode 100644 ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests.csproj create mode 100644 ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/TierMappingTests.cs create mode 100644 ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/ZB.MOM.WW.Health.Tests.csproj diff --git a/ZB.MOM.WW.Health/.gitignore 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b/ZB.MOM.WW.Health/Directory.Build.props @@ -0,0 +1,12 @@ + + + + net10.0 + enable + enable + latest + 0.1.0 + true + + + diff --git a/ZB.MOM.WW.Health/Directory.Packages.props b/ZB.MOM.WW.Health/Directory.Packages.props new file mode 100644 index 0000000..b49a06a --- /dev/null +++ b/ZB.MOM.WW.Health/Directory.Packages.props @@ -0,0 +1,32 @@ + + + + true + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/ZB.MOM.WW.Health/ZB.MOM.WW.Health.slnx b/ZB.MOM.WW.Health/ZB.MOM.WW.Health.slnx new file mode 100644 index 0000000..e4fce73 --- /dev/null +++ b/ZB.MOM.WW.Health/ZB.MOM.WW.Health.slnx @@ -0,0 +1,12 @@ + + + + + + + + + + + + diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.Akka/ZB.MOM.WW.Health.Akka.csproj b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.Akka/ZB.MOM.WW.Health.Akka.csproj new file mode 100644 index 0000000..371e321 --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.Akka/ZB.MOM.WW.Health.Akka.csproj @@ -0,0 +1,20 @@ + + + + true + ZB.MOM.WW.Health.Akka + ZB.MOM.WW + Akka.Cluster health-check extensions for the ZB.MOM.WW SCADA family. + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + + + + + + + + + + + diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.EntityFrameworkCore/ZB.MOM.WW.Health.EntityFrameworkCore.csproj b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.EntityFrameworkCore/ZB.MOM.WW.Health.EntityFrameworkCore.csproj new file mode 100644 index 0000000..c64ec4e --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health.EntityFrameworkCore/ZB.MOM.WW.Health.EntityFrameworkCore.csproj @@ -0,0 +1,20 @@ + + + + true + ZB.MOM.WW.Health.EntityFrameworkCore + ZB.MOM.WW + Entity Framework Core health-check extensions for the ZB.MOM.WW SCADA family. + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + + + + + + + + + + + diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj new file mode 100644 index 0000000..348e88f --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZB.MOM.WW.Health.csproj @@ -0,0 +1,29 @@ + + + + true + ZB.MOM.WW.Health + ZB.MOM.WW + Core ASP.NET Core health-check extensions for the ZB.MOM.WW SCADA family. + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + https://gitea.dohertylan.com/dohertj2/zb-mom-ww-health + + + + + + + + + + + + + + diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointExtensions.cs b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointExtensions.cs new file mode 100644 index 0000000..6cc1734 --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointExtensions.cs @@ -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; + +/// +/// Maps the canonical ZB.MOM.WW three-tier health endpoints in one call. +/// +public static class ZbHealthEndpointExtensions +{ + /// + /// Maps the three health tiers: + /// + /// /health/ready — runs only checks tagged . + /// /health/active — runs only checks tagged . + /// /healthz — bare process liveness; runs no checks (always 200 while the process is up). + /// + /// All three are anonymous. Status mapping is the ASP.NET Core default: + /// Healthy/Degraded → 200, Unhealthy → 503. + /// + /// + /// Does NOT call services.AddHealthChecks() — 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 ). + /// + /// + /// The for the readiness (/health/ready) 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. + /// + 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; + } +} diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointOptions.cs b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointOptions.cs new file mode 100644 index 0000000..7f875c2 --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthEndpointOptions.cs @@ -0,0 +1,17 @@ +namespace ZB.MOM.WW.Health; + +/// +/// Options for . Lets callers override the +/// three tier route paths. The default paths match the ZB.MOM.WW health contract. +/// +public sealed class ZbHealthEndpointOptions +{ + /// Path for the readiness tier (runs only checks tagged ). + public string ReadyPath { get; set; } = "/health/ready"; + + /// Path for the active-node tier (runs only checks tagged ). + public string ActivePath { get; set; } = "/health/active"; + + /// Path for the bare liveness tier (runs no checks; 200 while the process is up). + public string LivePath { get; set; } = "/healthz"; +} diff --git a/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthTags.cs b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthTags.cs new file mode 100644 index 0000000..fd867e4 --- /dev/null +++ b/ZB.MOM.WW.Health/src/ZB.MOM.WW.Health/ZbHealthTags.cs @@ -0,0 +1,19 @@ +namespace ZB.MOM.WW.Health; + +/// +/// Canonical health-check tag constants for the ZB.MOM.WW three-tier health pattern. +/// Use these when registering checks, e.g. +/// AddCheck("db", check, tags: [ZbHealthTags.Ready]), so that +/// routes each check to the right tier. +/// +public static class ZbHealthTags +{ + /// Readiness checks (dependencies needed before the node can serve traffic). + public const string Ready = "ready"; + + /// Active-node checks (leader / active-singleton gating). + public const string Active = "active"; + + /// Liveness — process is up. Reserved tag; the liveness endpoint runs no checks. + public const string Live = "live"; +} diff --git a/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Akka.Tests/ZB.MOM.WW.Health.Akka.Tests.csproj b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Akka.Tests/ZB.MOM.WW.Health.Akka.Tests.csproj new file mode 100644 index 0000000..615803f --- /dev/null +++ b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Akka.Tests/ZB.MOM.WW.Health.Akka.Tests.csproj @@ -0,0 +1,23 @@ + + + + false + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests.csproj b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests.csproj new file mode 100644 index 0000000..1f52ef9 --- /dev/null +++ b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests/ZB.MOM.WW.Health.EntityFrameworkCore.Tests.csproj @@ -0,0 +1,24 @@ + + + + false + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/TierMappingTests.cs b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/TierMappingTests.cs new file mode 100644 index 0000000..2cc8fbd --- /dev/null +++ b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/TierMappingTests.cs @@ -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; + +/// +/// Verifies the three-tier 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. +/// +public sealed class TierMappingTests +{ + /// + /// An test double that records each invocation and returns a + /// configurable result, so tests can assert which checks actually ran per tier. + /// + 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 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); + } +} diff --git a/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/ZB.MOM.WW.Health.Tests.csproj b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/ZB.MOM.WW.Health.Tests.csproj new file mode 100644 index 0000000..a47e144 --- /dev/null +++ b/ZB.MOM.WW.Health/tests/ZB.MOM.WW.Health.Tests/ZB.MOM.WW.Health.Tests.csproj @@ -0,0 +1,28 @@ + + + + false + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file