public static void Execute()
{
var id = new Random().Next(0, 1000).ToString(CultureInfo.InvariantCulture);
using (var scope = new TransactionScope())
{
// cross app domain call
using (var client = new HttpClient())
{
using (var request = new HttpRequestMessage(HttpMethod.Post, String.Format(ConfigurationManager.AppSettings["urlPost"], id)))
{
// forward transaction token
request.AddTransactionPropagationToken();
var response = client.SendAsync(request).Result;
response.EnsureSuccessStatusCode();
}
}
// insert data in local database
using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["connectionStringClient"].ConnectionString))
{
connection.Open();
using (var command = new SqlCommand(String.Format("INSERT INTO [Table_A] ([Name], [CreatedOn]) VALUES ('{0}', GETDATE())", id), connection))
{
command.ExecuteNonQuery();
}
}
// Commit client and server operation
scope.Complete();
}
}
static void Main(string[] args)
{
while (true)
{
Console.WriteLine("Press a Key to start the Transaction");
Console.ReadLine();
using (var scope = new TransactionScope())
{
bool commit = true;
try
{
for (int i = 0; i < 2; i++)
{
// database operation done in an external app domain
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(@"http://*****:*****@"http://localhost:5000"); .Net core(not working... for now...)
//https://github.com/dotnet/runtime/issues/715
using (var request = new HttpRequestMessage(HttpMethod.Post, "work/dojob"))
{
request.Content = new StringContent("\"client\"", System.Text.Encoding.UTF8, "application/json");
//Uncomment to simulate an error!
//request.Content = new StringContent("\"error\"", System.Text.Encoding.UTF8, "application/json");
// forward transaction token
var token = request.AddTransactionPropagationToken();
Console.WriteLine($"{token}::>>{i}...");
var response = client.SendAsync(request).Result;
response.EnsureSuccessStatusCode();
Console.WriteLine($"{i}:OK!");
}
}
Console.WriteLine($"5 sec delay...");
System.Threading.Thread.Sleep(5000);
}
}
catch (Exception ex)
{
commit = false;
Console.WriteLine(ex.ToString());
}
if (commit)
{
Console.WriteLine("Press Enter to Commit! (You might use the transaciton IT to make request from another client such as postman)");
Console.ReadLine();
// Commit local and cross domain operations
scope.Complete();
Console.WriteLine("C O M M I T E D");
}
else
{
Console.WriteLine("Rolling Back!!!!!");
}
}
}
}
public static void Execute()
{
using (var scope = new TransactionScope())
{
var id = new Random().Next(0, 1000).ToString(CultureInfo.InvariantCulture);
// cross app domain call
using (var client = new HttpClient())
{
using (var request = new HttpRequestMessage(HttpMethod.Post, String.Format(ConfigurationManager.AppSettings["urlPost"], id)))
{
// forward transaction token
request.AddTransactionPropagationToken();
var response = client.SendAsync(request).Result;
response.EnsureSuccessStatusCode();
}
// Here we are sending the same Id. Because this field is a unique primary key, the DB throw an exception
// Using the HttpResponseMessage.EnsureSuccessStatusCode() we check if the HTTP response status code is 200.
// If is not, the EnsureSuccessStatusCode() method thor an exception, forcing the execution to get out from the using
// scope without invoking the Complete() method ending up with a server and client rollback.
using (var request = new HttpRequestMessage(HttpMethod.Post, String.Format(ConfigurationManager.AppSettings["urlPost"], id)))
{
// forward transaction token
request.AddTransactionPropagationToken();
var response = client.SendAsync(request).Result;
response.EnsureSuccessStatusCode();
}
}
// insert data in local database
using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["connectionStringClient"].ConnectionString))
{
connection.Open();
using (var command = new SqlCommand(String.Format("INSERT INTO [Table_A] ([Name], [CreatedOn]) VALUES ('{0}', GETDATE())", id), connection))
{
command.ExecuteNonQuery();
}
}
scope.Complete();
}
}
