83 lines
2.7 KiB
C#
83 lines
2.7 KiB
C#
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using RabbitMQ.Client;
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using RabbitMQ.Client.Events;
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using System.Text;
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namespace ConsumerSimple
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{
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public class Receiver : IDisposable
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{
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private readonly ConnectionFactory _connectionFactory;
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private readonly IConnection _connection;
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private readonly IModel _channel;
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public Dictionary<string, HashSet<string>> Queues { get; private set; } = new();
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public Receiver(string brockerHost, string brockerUsername, string brockerPassword)
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{
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_connectionFactory = new ConnectionFactory() { HostName = brockerHost, UserName = brockerUsername, Password = brockerPassword };
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_connection = _connectionFactory.CreateConnection();
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_channel = _connection.CreateModel();
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}
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public bool SubscribeTo(string exchange, Action<string> handler, string? queueName = null)
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{
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try
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{
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if (!Queues.ContainsKey(exchange))
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{
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_channel.ExchangeDeclare(exchange: "logs", type: ExchangeType.Fanout);
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Queues.Add(exchange, new HashSet<string>());
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}
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if (queueName != null)
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_channel.QueueDeclare(queue: queueName,
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durable: true,
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exclusive: false,
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autoDelete: false,
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arguments: null);
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queueName = queueName ?? _channel.QueueDeclare().QueueName;
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_channel.QueueBind(queue: queueName,
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exchange: exchange,
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routingKey: string.Empty);
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var consumer = new EventingBasicConsumer(_channel);
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consumer.Received += (model, ea) =>
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{
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try
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{
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var message = Encoding.UTF8.GetString(ea.Body.ToArray());
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handler(message);
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_channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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}
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};
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_channel.BasicConsume(queue: queueName,
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autoAck: false,
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consumer: consumer);
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Queues[exchange].Add(queueName);
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return true;
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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}
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return false;
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}
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~Receiver() => Dispose();
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public void Dispose()
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{
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_connection.Dispose();
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_channel.Dispose();
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}
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}
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}
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