Add health check

src/backend/server/src/Todo.Api/Startup.cs

@@ -1,5 +1,7 @@
 using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
@@ -37,7 +39,10 @@ namespace Todo.Api
                 c.SwaggerDoc("v1", new OpenApiInfo { Title = "Todo.Api", Version = "v1" });
             });
 
-            services.AddPersistence(Configuration);
+            services.AddPersistence(Configuration, out var mongoDbOptions);
+            services
+                .AddHealthChecks()
+                .AddMongoDb(MongoDbConnectionHandler.FormatConnectionString(mongoDbOptions));
             services.AddSignalR();
         }
 
@@ -62,7 +67,39 @@ namespace Todo.Api
             {
                 endpoints.MapControllers();
                 endpoints.MapHub<TodoHub>("/hubs/todo");
+                endpoints.MapHealthChecks("/health/live", new HealthCheckOptions()
+                {
+                    ResponseWriter = async (context, report) =>
+                    {
+                        var response = new HealthCheckResponse()
+                        {
+                            Status = report.Status.ToString(),
+                            HealthChecks = report.Entries.Select(x => new IndividualHealthCheckResponse
+                            {
+                                Component = x.Key,
+                                Status = x.Value.Status.ToString(),
+                                Description = x.Value.Description
+                            }),
+                            HealthCheckDuration = report.TotalDuration
+                        };
+                        await context.Response.WriteAsJsonAsync(response);
+                    }
                 });
+            });
+        }
+
+        private class HealthCheckResponse
+        {
+            public string Status { get; set; }
+            public IEnumerable<IndividualHealthCheckResponse> HealthChecks { get; set; }
+            public TimeSpan HealthCheckDuration { get; set; }
+        }
+
+        private class IndividualHealthCheckResponse
+        {
+            public string Status { get; set; }
+            public string Component { get; set; }
+            public string Description { get; set; }
         }
     }
 }

src/backend/server/src/Todo.Persistence/DependencyInjection.cs

@@ -4,6 +4,7 @@ global using System.Linq;
 global using System.Collections.Generic;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Todo.Core.Interfaces.Persistence;
 using Todo.Persistence.Mongo;
 using Todo.Persistence.Mongo.Repositories;
@@ -12,11 +13,13 @@ namespace Todo.Persistence
 {
     public static class DependencyInjection
     {
-        public static IServiceCollection AddPersistence(this IServiceCollection services, IConfiguration configuration)
+        public static IServiceCollection AddPersistence(this IServiceCollection services, IConfiguration configuration,
+            out MongoDbOptions mongoDbOptions)
         {
-            
+            var exportableMongoDbOptions = new MongoDbOptions();
             var options = configuration.GetRequiredSection("MONGODB");
-            Console.WriteLine(options.Value);
+            options.Bind(exportableMongoDbOptions);
+            mongoDbOptions = exportableMongoDbOptions;
 
             services
                 .AddOptions<MongoDbOptions>()

src/backend/server/src/Todo.Persistence/Mongo/MongoDbConnectionHandler.cs

@@ -21,10 +21,12 @@ public class MongoDbConnectionHandler
 
     private static IMongoDatabase CreateConnectionFromOptions(MongoDbOptions options)
     {
-        var conn = new MongoClient(
-            $"mongodb://{options.Username}:{options.Password}@{options.Host}:{options.Port}");
+        var conn = new MongoClient(FormatConnectionString(options));
         var database = conn.GetDatabase(options.Database);
 
         return database;
     }
+
+    public static string FormatConnectionString(MongoDbOptions options) =>
+        $"mongodb://{options.Username}:{options.Password}@{options.Host}:{options.Port}";
 }

src/backend/server/src/Todo.Persistence/Todo.Persistence.csproj

@@ -11,6 +11,7 @@
     <ItemGroup>
         <PackageReference Include="MongoDB.Driver" Version="2.13.2" />
         <PackageReference Include="MongoDB.Driver.Core" Version="2.13.2" />
+        <PackageReference Include="AspNetCore.HealthChecks.MongoDb" Version="5.0.1" />
     </ItemGroup>
 
     <ItemGroup>