/// <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);
}
/// <summary>
/// Builds a set of producers constructing one producer for each URL in the connection string
/// </summary>
private void BuildProducers()
{
var reuseConnectionProperty = this.senderOptions.GetReuseConnection();
var reuseConnection = reuseConnectionProperty.HasValue && reuseConnectionProperty.Value;
this.logger.Trace(
$"Building producers of [{this.Configuration.Label}]:\r\n\t{string.Join("\r\n\t", this.senderOptions.RabbitConnectionString.Select(url => $"Producer({this.Configuration.Label}): URL\t=>\t{url}"))}");
foreach (var url in this.senderOptions.RabbitConnectionString)
{
var source = new CancellationTokenSource();
var connection = this.connectionPool.Get(url, reuseConnection, source.Token);
this.logger.Trace($"Using connection [{connection.Id}] at URL=[{url}] to resolve a producer");
var topologyBuilder = new TopologyBuilder(connection.OpenChannel());
var builder = new RouteResolverBuilder(this.bus.Endpoint, topologyBuilder, this.Configuration);
var routeResolverBuilder = this.Configuration.Options.GetRouteResolverBuilder();
Assumes.True(
routeResolverBuilder.HasValue,
"RouteResolverBuilder must be set for [{0}]",
this.Configuration.Label);
var routeResolver = routeResolverBuilder.Value(builder);
var producer = new Producer(
this.bus.Endpoint,
connection,
this.Configuration.Label,
routeResolver,
this.Configuration.Options.IsConfirmationRequired());
producer.Failed += p =>
{
// A failed producer will not be removed from the collection cause this failure should be treated as transient
this.logger.Error($"Producer [{producer}] has failed");
};
if (this.Configuration.RequiresCallback)
{
var callbackConfiguration = this.Configuration.CallbackConfiguration;
this.logger.Trace(
$"A sender of [{this.Configuration.Label}] requires a callback configuration; registering a receiver of [{callbackConfiguration.Label}] with connection string [{callbackConfiguration.Options.GetConnectionString()}]");
var receiver = this.bus.RegisterReceiver(this.Configuration.CallbackConfiguration);
this.logger.Trace(
$"A new callback receiver of [{callbackConfiguration.Label}] with connection string [{callbackConfiguration.Options.GetConnectionString()}] has been successfully registered, getting one of its listeners with URL=[{producer.BrokerUrl}]...");
var listener = receiver.GetListener(l => l.BrokerUrl == producer.BrokerUrl);
if (listener == null)
{
throw new BusConfigurationException(
$"Unable to find a suitable listener for receiver {receiver}");
}
this.logger.Trace(
$"A listener at URL=[{listener.BrokerUrl}] belonging to callback receiver of [{callbackConfiguration.Label}] acquired");
producer.UseCallbackListener(listener);
this.logger.Trace(
$"A producer of [{producer.Label}] at URL=[{producer.BrokerUrl}] has registered a callback listener successfully");
}
this.producers.Add(producer);
this.logger.Trace(
$"A producer of [{producer.Label}] at URL=[{producer.BrokerUrl}] has been added to the sender");
}
}
private Producer BuildProducer(string url)
{
var reuseConnectionProperty = this.senderOptions.GetReuseConnection();
var reuseConnection = reuseConnectionProperty.HasValue && reuseConnectionProperty.Value;
var source = new CancellationTokenSource();
var connection = this.connectionPool.Get(url, reuseConnection, source.Token);
this.logger.Trace($"Using connection [{connection.Id}] at URL=[{url}] to resolve a producer");
using (var topologyBuilder = new TopologyBuilder(connection))
{
var builder = new RouteResolverBuilder(this.bus.Endpoint, topologyBuilder, this.Configuration);
var routeResolverBuilderFunc = this.Configuration.Options.GetRouteResolverBuilder();
Assumes.True(
routeResolverBuilderFunc.HasValue,
"RouteResolverBuilder must be set for [{0}]",
this.Configuration.Label);
var routeResolver = routeResolverBuilderFunc.Value(builder);
var producer = new Producer(
this.bus.Endpoint,
connection,
this.Configuration.Label,
routeResolver,
this.Configuration.Options.IsConfirmationRequired());
if (this.Configuration.RequiresCallback)
{
var callbackConfiguration = this.CreateCallbackReceiverConfiguration(url);
var receiver = this.bus.RegisterReceiver(callbackConfiguration, true);
this.logger.Trace(
$"A sender of [{this.Configuration.Label}] requires a callback configuration; registering a receiver of [{callbackConfiguration.Label}] with connection string [{callbackConfiguration.Options.GetConnectionString()}]");
this.logger.Trace(
$"A new callback receiver of [{callbackConfiguration.Label}] with connection string [{callbackConfiguration.Options.GetConnectionString()}] has been successfully registered, getting one of its listeners with URL=[{producer.BrokerUrl}]...");
var listener = receiver.GetListener(l => l.BrokerUrl == producer.BrokerUrl);
if (listener == null)
{
throw new BusConfigurationException(
$"Unable to find a suitable listener for receiver {receiver}");
}
this.logger.Trace(
$"A listener at URL=[{listener.BrokerUrl}] belonging to callback receiver of [{callbackConfiguration.Label}] acquired");
listener.StopOnChannelShutdown = true;
producer.UseCallbackListener(listener);
this.logger.Trace(
$"A producer of [{producer.Label}] at URL=[{producer.BrokerUrl}] has registered a callback listener successfully");
}
producer.StopOnChannelShutdown = true;
producer.Stopped += (sender, args) =>
{
this.OnProducerStopped(url, sender, args);
};
return(producer);
}
}
