static void UpdateRoutingTable(XmlRoutingFileParser routingFileParser, XmlRoutingFileAccess routingFile, UnicastRoutingTable routingTable, UnicastSubscriberTable subscriberTable, bool nativeSends, bool nativePublishes)
{
try
{
var endpoints = routingFileParser.Parse(routingFile.Read());
var commandRoutes = new List <RouteTableEntry>();
var eventRoutes = new List <RouteTableEntry>();
foreach (var endpoint in endpoints)
{
var route = UnicastRoute.CreateFromEndpointName(endpoint.LogicalEndpointName);
foreach (var commandType in endpoint.Commands)
{
if (nativeSends)
{
log.Warn($"Selected transport uses native command routing. Route for {commandType.FullName} to {endpoint.LogicalEndpointName} configured in {routingFile.FileUri} will be ignored.");
}
commandRoutes.Add(new RouteTableEntry(commandType, route));
}
foreach (var eventType in endpoint.Events)
{
if (nativePublishes)
{
log.Warn($"Selected transport uses native event routing. Route for {eventType.FullName} to {endpoint.LogicalEndpointName} configured in {routingFile.FileUri} will be ignored.");
}
eventRoutes.Add(new RouteTableEntry(eventType, route));
}
}
routingTable.AddOrReplaceRoutes("FileBasedRouting", commandRoutes);
subscriberTable.AddOrReplaceRoutes("FileBasedRouting", eventRoutes);
log.Debug($"Updated routing information from {routingFile.FileUri}");
}
catch (Exception e)
{
log.Error($"Failed to update routing information from {routingFile.FileUri}. The last valid routing configuration will be used instead.", e);
throw;
}
}
protected override void Setup(FeatureConfigurationContext context)
{
var transportInfrastructure = context.Settings.Get <TransportInfrastructure>();
var unicastRoutingTable = context.Settings.Get <UnicastRoutingTable>();
var unicastSubscriberTable = context.Settings.Get <UnicastSubscriberTable>();
var routeFileUpdateInterval = context.Settings.Get <TimeSpan>(RouteFileUpdateInterval);
var routingFileUri = context.Settings.Get <Uri>(RoutingFilePathKey);
var routingFile = new XmlRoutingFileAccess(routingFileUri);
var routingFileParser = new XmlRoutingFileParser();
var nativeSends = transportInfrastructure.OutboundRoutingPolicy.Sends == OutboundRoutingType.Multicast;
var nativePublishes = transportInfrastructure.OutboundRoutingPolicy.Publishes == OutboundRoutingType.Multicast;
// ensure the routing file is valid and the routing table is populated before running FeatureStartupTasks
UpdateRoutingTable(routingFileParser, routingFile, unicastRoutingTable, unicastSubscriberTable, nativeSends, nativePublishes);
if (routeFileUpdateInterval > TimeSpan.Zero)
{
context.RegisterStartupTask(new UpdateRoutingTask(() => UpdateRoutingTable(routingFileParser, routingFile, unicastRoutingTable, unicastSubscriberTable, nativeSends, nativePublishes), routeFileUpdateInterval));
}
// if the transport provides native pub/sub support, don't plug in the FileBased pub/sub storage.
if (context.Settings.Get <TransportInfrastructure>().OutboundRoutingPolicy.Publishes == OutboundRoutingType.Unicast)
{
var routingConnector = new PublishRoutingConnector(
unicastSubscriberTable,
context.Settings.Get <EndpointInstances>(),
context.Settings.Get <DistributionPolicy>(),
instance => transportInfrastructure.ToTransportAddress(LogicalAddress.CreateRemoteAddress(instance)));
context.Pipeline.Replace("UnicastPublishRouterConnector", routingConnector);
context.Pipeline.Replace("MessageDrivenSubscribeTerminator", new SubscribeTerminator(), "handles subscribe operations");
context.Pipeline.Replace("MessageDrivenUnsubscribeTerminator", new UnsubscribeTerminator(), "handles ubsubscribe operations");
}
}
