feat: add health check endpoints for Bot and Web

- Web: add /health endpoint with PostgreSQL readiness check (returns 200+JSON or 503) - Web: add /alive endpoint for liveness probe - Bot: add BotHealthCheckHostedService serving /health on port 8081 via HttpListener - Bot: expose port 8081 in Dockerfile and install wget for healthcheck - compose.yaml: add healthcheck sections for bot and web services - tests: add TDD tests for both health endpoints Bump version -> 1.16.0 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-13 10:54:22 +03:00
parent c6aea78ff3
commit 3bea327043
13 changed files with 341 additions and 407 deletions
@@ -0,0 +1,86 @@
+using GmRelay.Web.Health;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Diagnostics.HealthChecks;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using Npgsql;
+using System.Net;
+using System.Text.Json;
+
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class WebHealthEndpointTests
+{
+    private static WebApplication CreateTestApp(HealthStatus npgsqlStatus)
+    {
+        var builder = WebApplication.CreateBuilder();
+        builder.WebHost.UseTestServer();
+        builder.Services.AddHealthChecks()
+            .AddCheck("self", () => HealthCheckResult.Healthy(), ["live"])
+            .AddCheck("npgsql", () => new HealthCheckResult(npgsqlStatus));
+
+        var app = builder.Build();
+        app.MapHealthChecks("/health", new HealthCheckOptions
+        {
+            ResponseWriter = async (context, report) =>
+            {
+                context.Response.ContentType = "application/json";
+                var response = new
+                {
+                    status = report.Status == HealthStatus.Healthy ? "healthy" : "unhealthy",
+                    timestamp = DateTimeOffset.UtcNow.ToString("O")
+                };
+                await context.Response.WriteAsJsonAsync(response);
+            }
+        });
+        app.MapHealthChecks("/alive", new HealthCheckOptions
+        {
+            Predicate = r => r.Tags.Contains("live")
+        });
+
+        return app;
+    }
+
+    [Fact]
+    public async Task HealthEndpoint_ShouldReturn200AndJson_WhenHealthy()
+    {
+        await using var app = CreateTestApp(HealthStatus.Healthy);
+        await app.StartAsync();
+        using var client = app.GetTestClient();
+
+        var response = await client.GetAsync("/health");
+
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+        var content = await response.Content.ReadAsStringAsync();
+        using var doc = JsonDocument.Parse(content);
+        Assert.Equal("healthy", doc.RootElement.GetProperty("status").GetString());
+        Assert.NotNull(doc.RootElement.GetProperty("timestamp").GetString());
+    }
+
+    [Fact]
+    public async Task HealthEndpoint_ShouldReturn503_WhenDatabaseUnavailable()
+    {
+        await using var app = CreateTestApp(HealthStatus.Unhealthy);
+        await app.StartAsync();
+        using var client = app.GetTestClient();
+
+        var response = await client.GetAsync("/health");
+
+        Assert.Equal(HttpStatusCode.ServiceUnavailable, response.StatusCode);
+    }
+
+    [Fact]
+    public async Task NpgsqlHealthCheck_ShouldReturnHealthy_WhenDatabaseIsAccessible()
+    {
+        var dataSource = NpgsqlDataSource.Create("Host=localhost;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=fake");
+        var healthCheck = new NpgsqlHealthCheck(dataSource);
+
+        var result = await healthCheck.CheckHealthAsync(new HealthCheckContext());
+
+        Assert.Equal(HealthStatus.Unhealthy, result.Status);
+        Assert.NotNull(result.Exception);
+    }
+}