feat: add mongodb configuration overloads

src/HealthChecks.MongoDb/DependencyInjection/MongoDbHealthCheckBuilderExtensions.cs

@@ -190,4 +190,64 @@ public static IHealthChecksBuilder AddMongoDb(
             tags,
             timeout));
     }
+
+    /// <summary>
+    /// Add a health check for MongoDb that list all databases from specified <paramref name="mongoClientFactory"/>.
+    /// </summary>
+    /// <param name="builder">The <see cref="IHealthChecksBuilder"/>.</param>
+    /// <param name="mongoClientFactory">A factory to build MongoClient to be used.</param>
+    /// <param name="name">The health check name. Optional. If <c>null</c> the type name 'mongodb' will be used for the name.</param>
+    /// <param name="failureStatus">
+    /// The <see cref="HealthStatus"/> that should be reported when the health check fails. Optional. If <c>null</c> then
+    /// the default status of <see cref="HealthStatus.Unhealthy"/> will be reported.
+    /// </param>
+    /// <param name="tags">A list of tags that can be used to filter sets of health checks. Optional.</param>
+    /// <param name="timeout">An optional <see cref="TimeSpan"/> representing the timeout of the check.</param>
+    /// <returns>The specified <paramref name="builder"/>.</returns>
+    public static IHealthChecksBuilder AddMongoDb(
+        this IHealthChecksBuilder builder,
+        Func<IServiceProvider, IMongoClient> mongoClientFactory,
+        string? name = default,
+        HealthStatus? failureStatus = default,
+        IEnumerable<string>? tags = default,
+        TimeSpan? timeout = default)
+    {
+        return builder.Add(new HealthCheckRegistration(
+            name ?? NAME,
+            sp => new MongoDbHealthCheck(mongoClientFactory(sp)),
+            failureStatus,
+            tags,
+            timeout));
+    }
+
+    /// <summary>
+    /// Add a health check for MongoDb database that list all collections from specified database on <paramref name="mongoDatabaseName"/>.
+    /// </summary>
+    /// <param name="builder">The <see cref="IHealthChecksBuilder"/>.</param>
+    /// <param name="mongoClientFactory">A factory to build MongoClient to be used.</param>
+    /// <param name="mongoDatabaseName">The name of the database to check.</param>
+    /// <param name="name">The health check name. Optional. If <c>null</c> the type name 'mongodb' will be used for the name.</param>
+    /// <param name="failureStatus">
+    /// The <see cref="HealthStatus"/> that should be reported when the health check fails. Optional. If <c>null</c> then
+    /// the default status of <see cref="HealthStatus.Unhealthy"/> will be reported.
+    /// </param>
+    /// <param name="tags">A list of tags that can be used to filter sets of health checks. Optional.</param>
+    /// <param name="timeout">An optional <see cref="TimeSpan"/> representing the timeout of the check.</param>
+    /// <returns>The specified <paramref name="builder"/>.</returns>
+    public static IHealthChecksBuilder AddMongoDb(
+        this IHealthChecksBuilder builder,
+        Func<IServiceProvider, IMongoClient> mongoClientFactory,
+        string mongoDatabaseName,
+        string? name = default,
+        HealthStatus? failureStatus = default,
+        IEnumerable<string>? tags = default,
+        TimeSpan? timeout = default)
+    {
+        return builder.Add(new HealthCheckRegistration(
+            name ?? NAME,
+            sp => new MongoDbHealthCheck(mongoClientFactory(sp), mongoDatabaseName),
+            failureStatus,
+            tags,
+            timeout));
+    }
 }

src/HealthChecks.MongoDb/MongoDbHealthCheck.cs

@@ -8,7 +8,7 @@ namespace HealthChecks.MongoDb;
 public class MongoDbHealthCheck : IHealthCheck
 {
     private static readonly BsonDocumentCommand<BsonDocument> _command = new(BsonDocument.Parse("{ping:1}"));
-    private static readonly ConcurrentDictionary<string, MongoClient> _mongoClient = new();
+    private static readonly ConcurrentDictionary<string, IMongoClient> _mongoClient = new();
     private readonly MongoClientSettings _mongoClientSettings;
     private readonly string? _specifiedDatabase;
 
@@ -21,6 +21,12 @@ public MongoDbHealthCheck(string connectionString, string? databaseName = defaul
         }
     }
 
+    public MongoDbHealthCheck(IMongoClient client, string? databaseName = default)
+        : this(client.Settings, databaseName)
+    {
+        _mongoClient[_mongoClientSettings.ToString()] = client;
+    }
+
     public MongoDbHealthCheck(MongoClientSettings clientSettings, string? databaseName = default)
     {
         _specifiedDatabase = databaseName;

test/HealthChecks.MongoDb.Tests/DependencyInjection/RegistrationTests.cs

@@ -37,6 +37,26 @@ public void add_health_check_when_properly_configured_mongoClientSettings()
         check.ShouldBeOfType<MongoDbHealthCheck>();
     }
     [Fact]
+    public void add_health_check_when_properly_configured_mongoClientFactory()
+    {
+        var services = new ServiceCollection();
+
+        services
+            .AddSingleton(MongoClientSettings.FromUrl(MongoUrl.Create("mongodb://connectionstring")))
+            .AddSingleton(sp => new MongoClient(sp.GetRequiredService<MongoClientSettings>()))
+            .AddHealthChecks()
+            .AddMongoDb(sp => sp.GetRequiredService<MongoClient>());
+
+        using var serviceProvider = services.BuildServiceProvider();
+        var options = serviceProvider.GetRequiredService<IOptions<HealthCheckServiceOptions>>();
+
+        var registration = options.Value.Registrations.First();
+        var check = registration.Factory(serviceProvider);
+
+        registration.Name.ShouldBe("mongodb");
+        check.ShouldBeOfType<MongoDbHealthCheck>();
+    }
+    [Fact]
     public void add_named_health_check_when_properly_configured_connectionString()
     {
         var services = new ServiceCollection();
@@ -56,7 +76,9 @@ public void add_named_health_check_when_properly_configured_connectionString()
     public void add_named_health_check_when_properly_configured_mongoClientSettings()
     {
         var services = new ServiceCollection();
-        services.AddHealthChecks()
+
+        services
+            .AddHealthChecks()
             .AddMongoDb(MongoClientSettings.FromUrl(MongoUrl.Create("mongodb://connectionstring")), name: "my-mongodb-group");
 
         using var serviceProvider = services.BuildServiceProvider();
@@ -65,6 +87,26 @@ public void add_named_health_check_when_properly_configured_mongoClientSettings(
         var registration = options.Value.Registrations.First();
         var check = registration.Factory(serviceProvider);
 
+        registration.Name.ShouldBe("my-mongodb-group");
+        check.ShouldBeOfType<MongoDbHealthCheck>();
+    }
+    [Fact]
+    public void add_named_health_check_when_properly_configured_mongoClientFactory()
+    {
+        var services = new ServiceCollection();
+
+        services
+            .AddSingleton(MongoClientSettings.FromUrl(MongoUrl.Create("mongodb://connectionstring")))
+            .AddSingleton(sp => new MongoClient(sp.GetRequiredService<MongoClientSettings>()))
+            .AddHealthChecks()
+            .AddMongoDb(sp => sp.GetRequiredService<MongoClient>(), name: "my-mongodb-group");
+
+        using var serviceProvider = services.BuildServiceProvider();
+        var options = serviceProvider.GetRequiredService<IOptions<HealthCheckServiceOptions>>();
+
+        var registration = options.Value.Registrations.First();
+        var check = registration.Factory(serviceProvider);
+
         registration.Name.ShouldBe("my-mongodb-group");
         check.ShouldBeOfType<MongoDbHealthCheck>();
     }

test/HealthChecks.MongoDb.Tests/HealthChecks.MongoDb.approved.txt

@@ -2,6 +2,7 @@ namespace HealthChecks.MongoDb
 {
     public class MongoDbHealthCheck : Microsoft.Extensions.Diagnostics.HealthChecks.IHealthCheck
     {
+        public MongoDbHealthCheck(MongoDB.Driver.IMongoClient client, string? databaseName = null) { }
         public MongoDbHealthCheck(MongoDB.Driver.MongoClientSettings clientSettings, string? databaseName = null) { }
         public MongoDbHealthCheck(string connectionString, string? databaseName = null) { }
         public System.Threading.Tasks.Task<Microsoft.Extensions.Diagnostics.HealthChecks.HealthCheckResult> CheckHealthAsync(Microsoft.Extensions.Diagnostics.HealthChecks.HealthCheckContext context, System.Threading.CancellationToken cancellationToken = default) { }
@@ -12,9 +13,11 @@ namespace Microsoft.Extensions.DependencyInjection
     public static class MongoDbHealthCheckBuilderExtensions
     {
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, MongoDB.Driver.MongoClientSettings mongoClientSettings, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
+        public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, System.Func<System.IServiceProvider, MongoDB.Driver.IMongoClient> mongoClientFactory, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, System.Func<System.IServiceProvider, string> mongodbConnectionStringFactory, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, string mongodbConnectionString, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, MongoDB.Driver.MongoClientSettings mongoClientSettings, string mongoDatabaseName, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
+        public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, System.Func<System.IServiceProvider, MongoDB.Driver.IMongoClient> mongoClientFactory, string mongoDatabaseName, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, System.Func<System.IServiceProvider, string> mongodbConnectionStringFactory, string mongoDatabaseName, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
         public static Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder AddMongoDb(this Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder builder, string mongodbConnectionString, string mongoDatabaseName, string? name = null, Microsoft.Extensions.Diagnostics.HealthChecks.HealthStatus? failureStatus = default, System.Collections.Generic.IEnumerable<string>? tags = null, System.TimeSpan? timeout = default) { }
     }