public async Task DeclareAsync()
{
bool exists = await _bunny.ExchangeExistsAsync(Name);
if (exists)
{
return;
}
IModel channel = null;
try
{
channel = _bunny.Channel(newOne: true);
await Task.Run(() =>
{
channel.ExchangeDeclare(Name, ExchangeType, Durable, AutoDelete, _args);
});
}
catch (System.Exception exc)
{
throw DeclarationException.DeclareFailed(exc, "exchange-declare failed!");
}
finally
{
channel.Close();
}
}
internal static async Task <bool> ExchangeExistsAsync(this IBunny bunny, string name)
{
try
{
var channel = bunny.Channel(newOne: true);
await Task.Run(() => channel.ExchangeDeclarePassive(name));
return(true);
}
catch (RabbitMQ.Client.Exceptions.OperationInterruptedException)
{
return(false);
}
catch (Exception ex)
{
throw DeclarationException.DeclareFailed(ex);
}
}
internal static async Task <bool> QueueExistsAsync(this IBunny bunny, string name)
{
try
{
var channel = bunny.Channel(newOne: true);
var result = await new TaskFactory().StartNew <QueueDeclareOk>(() => channel.QueueDeclarePassive(name));
return(true);
}
catch (RabbitMQ.Client.Exceptions.OperationInterruptedException)
{
return(false);
}
catch (Exception ex)
{
throw DeclarationException.DeclareFailed(ex);
}
}