Health check

Startup.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.HttpsPolicy;
 using Microsoft.AspNetCore.Mvc;
@@ -34,11 +35,11 @@ namespace weddingapi
         {
             BsonSerializer.RegisterSerializer(new GuidSerializer(BsonType.String));
             BsonSerializer.RegisterSerializer(new DateTimeOffsetSerializer(BsonType.String));
+            var mongoDbConfig = Configuration.GetSection(nameof(MongoDbConfig)).Get<MongoDbConfig>();
 
             services.AddSingleton<IMongoClient>(serviceProvider => 
             {
-                var config = Configuration.GetSection(nameof(MongoDbConfig)).Get<MongoDbConfig>();
-                return new MongoClient(config.ConnectionString);
+                return new MongoClient(mongoDbConfig.ConnectionString);
             });
 
             services.AddSingleton<IFamilyRepository, MongoDBFamilyRepository>();
@@ -49,6 +50,13 @@ namespace weddingapi
             {
                 c.SwaggerDoc("v1", new OpenApiInfo { Title = "weddingapi", Version = "v1" });
             });
+
+            services.AddHealthChecks()
+                .AddMongoDb(mongoDbConfig.ConnectionString, 
+                name: "mongodb", 
+                timeout: TimeSpan.FromSeconds(3),
+                tags: new[] { "ready" });
+
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
@@ -73,6 +81,14 @@ namespace weddingapi
             app.UseEndpoints(endpoints =>
             {
                 endpoints.MapControllers();
+
+                endpoints.MapHealthChecks("/health/ready", new HealthCheckOptions {
+                    Predicate = (check) => check.Tags.Contains("ready")
+                });
+
+                endpoints.MapHealthChecks("/health/live", new HealthCheckOptions {
+                    Predicate = (_) => false
+                });
             });
         }
     }