public RabbitChannel OpenChannel(CancellationToken token)
{
lock (this.syncRoot)
{
while (true)
{
token.ThrowIfCancellationRequested();
if (this.connection == null || !this.connection.IsOpen)
{
this.Open(token);
}
try
{
var model = this.connection.CreateModel();
var channel = new RabbitChannel(this.Id, model, this.busContext);
return(channel);
}
catch (Exception ex)
{
this.logger.Error($"Failed to open a new channel due to: {ex.Message}; retrying...", ex);
}
}
}
}
/// <summary>
/// The resolve for.
/// </summary>
/// <param name="configuration">
/// The configuration.
/// </param>
/// <returns>
/// The <see cref="Listener"/>.
/// </returns>
public Listener ResolveFor(IReceiverConfiguration configuration)
{
using (RabbitChannel channel = this.bus.OpenChannel())
{
var topologyBuilder = new TopologyBuilder(channel);
var builder = new SubscriptionEndpointBuilder(this.bus.Endpoint, topologyBuilder, configuration);
Maybe <Func <ISubscriptionEndpointBuilder, ISubscriptionEndpoint> > endpointBuilder = configuration.Options.GetEndpointBuilder();
Assumes.True(endpointBuilder != null, "EndpointBuilder is null for [{0}].", configuration.Label);
ISubscriptionEndpoint endpoint = endpointBuilder.Value(builder);
lock (this.listeners)
{
Listener listener = this.listeners.FirstOrDefault(l => l.Endpoint.ListeningSource.Equals(endpoint.ListeningSource));
if (listener == null)
{
listener = new Listener(this.bus, endpoint, (RabbitReceiverOptions)configuration.Options, this.bus.Configuration.ValidatorRegistry);
this.listeners.Add(listener);
}
else
{
EnsureConfigurationIsCompatible(listener, configuration);
}
return(listener);
}
}
}
/// <summary>
/// Инициализирует новый экземпляр класса <see cref="RabbitDelivery"/>.
/// </summary>
/// <param name="channel">Канал поставки сообщения.</param>
/// <param name="args">Параметры поставки сообщения.</param>
/// <param name="requiresAccept">Верно, если требуется подтверждение доставки.</param>
public RabbitDelivery(RabbitChannel channel, BasicDeliverEventArgs args, bool requiresAccept)
{
this.Channel = channel;
this.Label = channel.Bus.MessageLabelHandler.Resolve(args);
this.Args = args;
this.requiresAccept = requiresAccept;
this.headers = new Lazy <IDictionary <string, object> >(
() => this.ExtractHeadersFrom(args));
}
/// <summary>
/// The open channel.
/// </summary>
/// <returns>
/// The <see cref="RabbitChannel"/>.
/// </returns>
/// <exception cref="InvalidOperationException">
/// </exception>
public virtual RabbitChannel OpenChannel()
{
if (this.Connection == null || !this.Connection.IsOpen)
{
throw new InvalidOperationException("RabbitMQ Connection is not open.");
}
try
{
var channel = new RabbitChannel(this, this.Connection.CreateModel());
channel.Failed += (ch, args) => this.HandleBusFailure(args.GetException());
return(channel);
}
catch (Exception ex)
{
this.HandleBusFailure(ex);
throw;
}
}
public RabbitChannel OpenChannel()
{
if (this.connection == null || !this.connection.IsOpen)
{
throw new InvalidOperationException("RabbitMQ connection is not open.");
}
try
{
var model = this.connection.CreateModel();
var channel = new RabbitChannel(model, this.busContext);
channel.Failed += (ch, args) => this.OnChannelFailed(ch, args.GetException());
return(channel);
}
catch (Exception ex)
{
this.logger.Error($"Failed to open a new channel in connection [{this}] due to: {ex.Message}", ex);
throw;
}
}
/// <summary>
/// The resolve for.
/// </summary>
/// <param name="configuration">
/// The configuration.
/// </param>
/// <returns>
/// The <see cref="Producer"/>.
/// </returns>
public Producer ResolveFor(ISenderConfiguration configuration)
{
Producer producer = this.TryResolverFor(configuration.Label);
if (producer == null)
{
using (RabbitChannel channel = this._bus.OpenChannel())
{
var topologyBuilder = new TopologyBuilder(channel);
var builder = new RouteResolverBuilder(this._bus.Endpoint, topologyBuilder, configuration);
Maybe <Func <IRouteResolverBuilder, IRouteResolver> > routeResolverBuilder = configuration.Options.GetRouteResolverBuilder();
Assumes.True(routeResolverBuilder.HasValue, "RouteResolverBuilder must be set for [{0}]", configuration.Label);
IRouteResolver routeResolver = routeResolverBuilder.Value(builder);
producer = new Producer(this._bus, configuration.Label, routeResolver, configuration.Options.IsConfirmationRequired());
producer.Failed += p =>
{
{
// lock (_producers)
p.Dispose();
this._producers.Remove(p.Label);
}
};
// lock (_producers)
this._producers.Add(configuration.Label, producer);
}
if (configuration.RequiresCallback)
{
producer.UseCallbackListener(this._bus.ListenerRegistry.ResolveFor(configuration.CallbackConfiguration));
}
}
return(producer);
}
private CancellableQueueingConsumer InitializeConsumer(CancellationToken token, out RabbitChannel channel)
{
// Opening a new channel may lead to a new connection creation
channel = this.connection.OpenChannel(token);
channel.Shutdown += this.OnChannelShutdown;
this.channels.Add(channel);
if (this.ReceiverOptions.GetQoS().HasValue)
{
channel.SetQos(
this.ReceiverOptions.GetQoS().Value);
}
var consumer = channel.BuildCancellableConsumer(token);
var tag = channel.StartConsuming(
this.endpoint.ListeningSource,
this.ReceiverOptions.IsAcceptRequired(),
consumer);
this.logger.Trace(
$"A consumer tagged [{tag}] has been registered in listener of [{string.Join(",", this.AcceptedLabels)}]");
return(consumer);
}
/// <summary>
/// Создает входящее сообщение.
/// </summary>
/// <param name="deliveryChannel">
/// The delivery Channel.
/// </param>
/// <param name="args">
/// Аргументы, с которыми получено сообщение.
/// </param>
/// <returns>
/// Входящее сообщение.
/// </returns>
public RabbitDelivery BuildDeliveryFrom(RabbitChannel deliveryChannel, BasicDeliverEventArgs args)
{
return(new RabbitDelivery(this.busContext, deliveryChannel, args, this.ReceiverOptions.IsAcceptRequired()));
}
/// <summary>
/// The open channel.
/// </summary>
/// <returns>
/// The <see cref="RabbitChannel"/>.
/// </returns>
/// <exception cref="InvalidOperationException">
/// </exception>
public virtual RabbitChannel OpenChannel()
{
if (this.Connection == null || !this.Connection.IsOpen)
{
throw new InvalidOperationException("RabbitMQ Connection is not open.");
}
try
{
var channel = new RabbitChannel(this, this.Connection.CreateModel());
channel.Failed += (ch, args) => this.HandleBusFailure(args.GetException());
return channel;
}
catch (Exception ex)
{
this.HandleBusFailure(ex);
throw;
}
}
/// <summary>
/// Инициализирует новый экземпляр класса <see cref="DefaultPublishConfirmationTracker"/>.
/// </summary>
/// <param name="channel">
/// The channel.
/// </param>
public DefaultPublishConfirmationTracker(RabbitChannel channel)
{
this.channel = channel;
}
/// <summary>
/// Инициализирует новый экземпляр класса <see cref="TopologyBuilder"/>.
/// </summary>
/// <param name="channel">
/// Соединение с шиной сообщений, через которое настраивается топология.
/// </param>
public TopologyBuilder(IChannel channel)
{
// TODO: нужно работать с более общим типом IChannel.
this.rabbitChannel = (RabbitChannel)channel;
}
/// <summary>
/// Инициализирует новый экземпляр класса <see cref="RabbitClient"/>.
/// </summary>
/// <param name="channel">
/// The channel.
/// </param>
protected RabbitClient(RabbitChannel channel)
{
this.Channel = channel;
}
/// <summary>
/// Инициализирует новый экземпляр класса <see cref="RabbitClient"/>.
/// </summary>
/// <param name="channel">
/// The channel.
/// </param>
protected RabbitClient(RabbitChannel channel)
{
this.Channel = channel;
}
/// <summary>
/// Initializes a new instance of the <see cref="PublishConfirmationTracker"/> class.
/// </summary>
/// <param name="channel">
/// The channel.
/// </param>
public PublishConfirmationTracker(RabbitChannel channel)
{
this.logger = LogManager.GetLogger($"{this.GetType().FullName}({this.GetHashCode()})");
this.channel = channel;
this.channel.Shutdown += this.OnChannelShutdown;
}
/// <summary>
/// »нициализирует новый экземпл¤р класса <see cref="DefaultPublishConfirmationTracker"/>.
/// </summary>
/// <param name="channel">
/// The channel.
/// </param>
public DefaultPublishConfirmationTracker(RabbitChannel channel)
{
this.channel = channel;
}
