private static void DisplayRabbitSettings(QueueConfig config)
{
Console.WriteLine("*********************");
Console.WriteLine("Host: {0}", config.HostName);
Console.WriteLine("Username: {0}", config.UserName);
Console.WriteLine("Password: {0}", config.Password);
Console.WriteLine("QueueName: {0}", config.QueueName);
Console.WriteLine("*********************");
Console.WriteLine();
}
public QueueProcessor(QueueConfig config)
{
_config = config;
_connectionFactory = new ConnectionFactory
{
HostName = config.HostName,
UserName = config.UserName,
Password = config.Password
};
_connection = _connectionFactory.CreateConnection();
_model = _connection.CreateModel();
_model.BasicQos(0, 1, false);
_model.QueueDeclare(config.QueueName, false, false, true, null);
_dataStore = new DataStore();
}
public static void Main(string[] args)
{
var configuration = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json")
.Build();
var rabbitSettings = configuration.GetSection("rabbitmq-settings");
var config = new QueueConfig
{
HostName = rabbitSettings["hostName"],
UserName = rabbitSettings["userName"],
Password = rabbitSettings["password"],
QueueName = rabbitSettings["sendQueue"]
};
DisplayRabbitSettings(config);
Console.WriteLine("Starting School Service Queue Processor....");
Console.WriteLine();
// Rabbitmq startup is slow. Add retry w/ backoff
var policy = Policy.Handle <BrokerUnreachableException>()
.WaitAndRetry(3,
attempt => TimeSpan.FromSeconds(attempt * 3),
(exp, timeSpan) =>
{
Console.WriteLine($"Retrying {nameof(queue_service)}");
}
);
policy.Execute(() =>
{
var processor = new QueueProcessor(config);
processor.Start();
});
}
