PR To support DbDataSource for Postgresql

src/HealthChecks.NpgSql/DependencyInjection/NpgSqlHealthCheckBuilderExtensions.cs

@@ -65,15 +65,28 @@ public static IHealthChecksBuilder AddNpgSql(
         IEnumerable<string>? tags = default,
         TimeSpan? timeout = default)
     {
-        Guard.ThrowIfNull(connectionStringFactory);
+        return builder.AddNpgSql(e => new NpgsqlDataSourceBuilder(connectionStringFactory(e)).Build(), healthQuery, configure, name, failureStatus, tags, timeout);
+    }
+
+    public static IHealthChecksBuilder AddNpgSql(
+        this IHealthChecksBuilder builder,
+        Func<IServiceProvider, NpgsqlDataSource> dbDataSourceFactory,
+        string healthQuery = HEALTH_QUERY,
+        Action<NpgsqlConnection>? configure = null,
+        string? name = default,
+        HealthStatus? failureStatus = default,
+        IEnumerable<string>? tags = default,
+        TimeSpan? timeout = default)
+    {
+        Guard.ThrowIfNull(dbDataSourceFactory);
 
         return builder.Add(new HealthCheckRegistration(
             name ?? NAME,
             sp =>
             {
                 var options = new NpgSqlHealthCheckOptions
                 {
-                    ConnectionString = connectionStringFactory(sp),
+                    DataSource = dbDataSourceFactory(sp),
                     CommandText = healthQuery,
                     Configure = configure,
                 };

src/HealthChecks.NpgSql/NpgSqlHealthCheck.cs

@@ -1,5 +1,4 @@
 using Microsoft.Extensions.Diagnostics.HealthChecks;
-using Npgsql;
 
 namespace HealthChecks.NpgSql;
 
@@ -12,7 +11,7 @@ public class NpgSqlHealthCheck : IHealthCheck
 
     public NpgSqlHealthCheck(NpgSqlHealthCheckOptions options)
     {
-        Guard.ThrowIfNull(options.ConnectionString, true);
+        Guard.ThrowIfNull(options.DataSource, true);
         Guard.ThrowIfNull(options.CommandText, true);
         _options = options;
     }
@@ -22,7 +21,7 @@ public async Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context
     {
         try
         {
-            using var connection = new NpgsqlConnection(_options.ConnectionString);
+            await using var connection = _options.DataSource.CreateConnection();
 
             _options.Configure?.Invoke(connection);
             await connection.OpenAsync(cancellationToken).ConfigureAwait(false);

src/HealthChecks.NpgSql/NpgSqlHealthCheckOptions.cs

@@ -10,9 +10,9 @@ namespace HealthChecks.NpgSql;
 public class NpgSqlHealthCheckOptions
 {
     /// <summary>
-    /// The Postgres connection string to be used.
+    /// The Postgres data source to be used.
     /// </summary>
-    public string ConnectionString { get; set; } = null!;
+    public NpgsqlDataSource DataSource { get; set; } = null!;
 
     /// <summary>
     /// The query to be executed.