/// <summary>
/// See <see cref="Feature.Setup" />.
/// </summary>
protected internal override void Setup(FeatureConfigurationContext context)
{
// The MessageDrivenSubscriptions feature needs to be activated when using the subscription migration mode as some persister packages check this feature before enabling the subscription storage.
if (SubscriptionMigrationMode.IsMigrationModeEnabled(context.Settings))
{
return;
}
if (!PersistenceStartup.HasSupportFor <StorageType.Subscriptions>(context.Settings))
{
throw new Exception("The selected persistence doesn't have support for subscription storage. Select another persistence or disable the message-driven subscriptions feature using endpointConfiguration.DisableFeature<MessageDrivenSubscriptions>()");
}
var transportInfrastructure = context.Settings.Get <TransportInfrastructure>();
var canReceive = !context.Settings.GetOrDefault <bool>("Endpoint.SendOnly");
var conventions = context.Settings.Get <Conventions>();
var enforceBestPractices = context.Routing.EnforceBestPractices;
var distributionPolicy = context.Routing.DistributionPolicy;
var endpointInstances = context.Routing.EndpointInstances;
var publishers = context.Routing.Publishers;
var configuredPublishers = context.Settings.Get <ConfiguredPublishers>();
configuredPublishers.Apply(publishers, conventions, enforceBestPractices);
context.Pipeline.Register(b =>
{
var unicastPublishRouter = new UnicastPublishRouter(b.Build <MessageMetadataRegistry>(), i => transportInfrastructure.ToTransportAddress(LogicalAddress.CreateRemoteAddress(i)), b.Build <ISubscriptionStorage>());
return(new UnicastPublishRouterConnector(unicastPublishRouter, distributionPolicy));
}, "Determines how the published messages should be routed");
if (canReceive)
{
var subscriberAddress = context.Receiving.LocalAddress;
var subscriptionRouter = new SubscriptionRouter(publishers, endpointInstances, i => transportInfrastructure.ToTransportAddress(LogicalAddress.CreateRemoteAddress(i)));
context.Pipeline.Register(b => new MessageDrivenSubscribeTerminator(subscriptionRouter, subscriberAddress, context.Settings.EndpointName(), b.Build <IDispatchMessages>()), "Sends subscription requests when message driven subscriptions is in use");
context.Pipeline.Register(b => new MessageDrivenUnsubscribeTerminator(subscriptionRouter, subscriberAddress, context.Settings.EndpointName(), b.Build <IDispatchMessages>()), "Sends requests to unsubscribe when message driven subscriptions is in use");
var authorizer = context.Settings.GetSubscriptionAuthorizer();
if (authorizer == null)
{
authorizer = _ => true;
}
context.Container.RegisterSingleton(authorizer);
context.Pipeline.Register <SubscriptionReceiverBehavior.Registration>();
}
}
/// <summary>
/// See <see cref="Feature.Setup" />.
/// </summary>
protected internal override void Setup(FeatureConfigurationContext context)
{
// The MessageDrivenSubscriptions feature needs to be activated when using the subscription migration mode as some persister packages check this feature before enabling the subscription storage.
if (SubscriptionMigrationMode.IsMigrationModeEnabled(context.Settings))
{
return;
}
var transportDefinition = context.Settings.Get <TransportDefinition>();
var conventions = context.Settings.Get <Conventions>();
var enforceBestPractices = context.Routing.EnforceBestPractices;
var distributionPolicy = context.Routing.DistributionPolicy;
var endpointInstances = context.Routing.EndpointInstances;
var publishers = context.Routing.Publishers;
var configuredPublishers = context.Settings.Get <ConfiguredPublishers>();
configuredPublishers.Apply(publishers, conventions, enforceBestPractices);
var publishingEnabled = context.Settings.Get <bool>(EnablePublishingSettingsKey);
if (publishingEnabled)
{
if (!PersistenceStartup.HasSupportFor <StorageType.Subscriptions>(context.Settings))
{
throw new Exception("The selected persistence doesn't have support for subscription storage. Select another persistence or disable the publish functionality using transportConfiguration.DisablePublishing()");
}
context.Pipeline.Register("UnicastPublishRouterConnector", b =>
{
var unicastPublishRouter = new UnicastPublishRouter(b.GetRequiredService <MessageMetadataRegistry>(), i => transportDefinition.ToTransportAddress(new QueueAddress(i.Endpoint, i.Discriminator, i.Properties, null)), b.GetRequiredService <ISubscriptionStorage>());
return(new UnicastPublishConnector(unicastPublishRouter, distributionPolicy));
}, "Determines how the published messages should be routed");
var authorizer = context.Settings.GetSubscriptionAuthorizer();
if (authorizer == null)
{
authorizer = _ => true;
}
context.Container.AddSingleton(authorizer);
context.Pipeline.Register(typeof(SubscriptionReceiverBehavior), "Check for subscription messages and execute the requested behavior to subscribe or unsubscribe.");
}
else
{
context.Pipeline.Register(typeof(DisabledPublishingTerminator), "Throws an exception when trying to publish with publishing disabled");
}
var canReceive = !context.Settings.GetOrDefault <bool>("Endpoint.SendOnly");
if (canReceive)
{
var subscriberAddress = context.Receiving.LocalAddress;
var subscriptionRouter = new SubscriptionRouter(publishers, endpointInstances, i => transportDefinition.ToTransportAddress(new QueueAddress(i.Endpoint, i.Discriminator, i.Properties, null)));
context.Pipeline.Register(b => new MessageDrivenSubscribeTerminator(subscriptionRouter, subscriberAddress, context.Settings.EndpointName(), b.GetRequiredService <IMessageDispatcher>()), "Sends subscription requests when message driven subscriptions is in use");
context.Pipeline.Register(b => new MessageDrivenUnsubscribeTerminator(subscriptionRouter, subscriberAddress, context.Settings.EndpointName(), b.GetRequiredService <IMessageDispatcher>()), "Sends requests to unsubscribe when message driven subscriptions is in use");
}
else
{
context.Pipeline.Register(new SendOnlySubscribeTerminator(), "Throws an exception when trying to subscribe from a send-only endpoint");
context.Pipeline.Register(new SendOnlyUnsubscribeTerminator(), "Throws an exception when trying to unsubscribe from a send-only endpoint");
}
// implementations of IInitializableSubscriptionStorage are optional and can be provided by persisters.
context.RegisterStartupTask(b => new InitializableSubscriptionStorage(b.GetService <IInitializableSubscriptionStorage>()));
}
internal MessageDrivenSubscriptions()
{
EnableByDefault();
Defaults(s =>
{
// s.SetDefault<Publishers>(new Publishers()); currently setup by RoutingFeature
s.SetDefault(new ConfiguredPublishers());
s.SetDefault(EnablePublishingSettingsKey, true);
});
Prerequisite(c => c.Settings.Get <TransportDefinition>().SupportsPublishSubscribe == false || SubscriptionMigrationMode.IsMigrationModeEnabled(c.Settings), "The transport supports native pub sub");
}
public NativePublishSubscribeFeature()
{
EnableByDefault();
Prerequisite(c => c.Settings.Get <TransportDefinition>().SupportsPublishSubscribe, "The transport does not support native pub sub");
Prerequisite(c => SubscriptionMigrationMode.IsMigrationModeEnabled(c.Settings) == false, "The transport has enabled subscription migration mode");
}
internal MessageDrivenSubscriptions()
{
EnableByDefault();
Defaults(s =>
{
// s.SetDefault<Publishers>(new Publishers()); currently setup by RoutingFeature
s.SetDefault(new ConfiguredPublishers());
s.SetDefault(EnablePublishingSettingsKey, true);
});
Prerequisite(c => c.Settings.Get <TransportInfrastructure>().OutboundRoutingPolicy.Publishes == OutboundRoutingType.Unicast || SubscriptionMigrationMode.IsMigrationModeEnabled(c.Settings), "The transport supports native pub sub");
}
public NativePublishSubscribeFeature()
{
EnableByDefault();
Prerequisite(c => c.Settings.Get <TransportInfrastructure>().OutboundRoutingPolicy.Publishes == OutboundRoutingType.Multicast, "The transport does not support native pub sub");
Prerequisite(c => SubscriptionMigrationMode.IsMigrationModeEnabled(c.Settings) == false, "The transport has enabled subscription migration mode");
}