dev: update serverless example

Author: KirillKurdyukov

examples/Ydb.Sdk.AdoNet.Yandex.Cloud.Serverless.Container/Program.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics;
+using Dapper;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;
@@ -18,18 +19,17 @@
 var stopwatch = Stopwatch.StartNew();
 stopwatch.Start();
 
-await using var dataSource = new YdbDataSource(
-    new YdbConnectionStringBuilder(connectionString)
-    {
-        CredentialsProvider = new MetadataProvider(loggerFactory: loggerFactory),
-        LoggerFactory = loggerFactory,
-        DisableDiscovery = true
-    }
-);
+await using var ydbDataSource = new YdbDataSource(new YdbConnectionStringBuilder(connectionString)
+{
+    CredentialsProvider = new MetadataProvider(loggerFactory: loggerFactory),
+    LoggerFactory = loggerFactory,
+    DisableDiscovery = true,
+    EnableImplicitSession = true
+});
 
-await using var ydbCommand = dataSource.CreateCommand();
-ydbCommand.CommandText = "SELECT 'Hello Serverless YDB from Yandex Cloud Serverless Container!'u";
-var scalar = await ydbCommand.ExecuteScalarAsync();
+await using var ydbConnection = await ydbDataSource.OpenRetryableConnectionAsync();
+var scalar = await ydbConnection.ExecuteScalarAsync<string>(
+    "SELECT 'Hello Serverless YDB from Yandex Cloud Serverless Container!'u");
 stopwatch.Stop();
 
 logger.LogInformation("Success request! [Ms: {Ms}], {Select}", stopwatch.ElapsedMilliseconds, scalar);

examples/Ydb.Sdk.AdoNet.Yandex.Cloud.Serverless.Container/README.md

@@ -6,23 +6,32 @@ to [Yandex Cloud Serverless Containers](https://yandex.cloud/en/docs/serverless-
 ## Getting started
 
 1. **Setup** [Yandex Container Registry](https://yandex.cloud/en/docs/container-registry/operations/registry/registry-create).
-2. **Build and Push Docker Image**
+2. **Configure YDB Connection String**. Update the `appsettings.json` file with your YDB connection details:
+   ```json
+   {
+     "ConnectionStrings": {
+       "ServerlessYDB": "UseTls=true;Host=<your-ydb-host>;Port=2135;Database=<your-database-path>"
+     }
+   }
+   ```
+   Replace `<your-ydb-host>` with your YDB endpoint host and `<your-database-path>` with your database path (e.g., `/ru-central1/b1g8ejbxxxxxxxx/etn8xxxxxxxx`).
+3. **Build and Push Docker Image**
    ```bash 
    docker build . -t cr.yandex/<container-registry-id>/ado-net-app:latest
    docker push cr.yandex/<container-registry-id>/ado-net-app:latest
    ```
    Replace <container-registry-id> with your actual Container Registry ID.
-3. **Grant Required Permissions**. To enable your Serverless Container to access both YDB and your container image in
+4. **Grant Required Permissions**. To enable your Serverless Container to access both YDB and your container image in
    the Container Registry, grant the following roles to your Service Account:
 
     - `ydb.editor` — access to YDB,
     - `container-registry.images.puller` — permission to pull images from Container Registry.
 
-4. **Create a new revision**. After pushing your image, create a new version of the Serverless Container as described in
+5. **Create a new revision**. After pushing your image, create a new version of the Serverless Container as described in
    the [official guide](https://yandex.cloud/en/docs/serverless-containers/quickstart/container#create-revision).
    Specify your image and the necessary environment variables and secrets.
 
-5. **Running the Yandex Serverless Container**.
+6. **Running the Yandex Serverless Container**.
    After the new revision has been rolled out, you can use your container (e.g., for a health check) by executing the
    following command:
    ```bash

examples/Ydb.Sdk.AdoNet.Yandex.Cloud.Serverless.Container/Ydb.Sdk.AdoNet.Yandex.Cloud.Serverless.Container.csproj

@@ -15,7 +15,8 @@
         <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0"/>
         <PackageReference Include="NLog.Extensions.Logging" Version="5.5.0"/>
         <PackageReference Include="Ydb.Sdk.Yc.Auth" Version="0.2.0"/>
-        <PackageReference Include="Ydb.Sdk" Version="0.18.0"/>
+        <PackageReference Include="Ydb.Sdk" Version="0.24.0"/>
+        <PackageReference Include="Dapper" Version="2.1.35"/>
 
         <None Update="appsettings.json">
             <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>