public async Task Initialise(CancellationToken cancellationToken)
{
var handledMessageTypeNames = new List <string>();
foreach (var serviceDescriptor in registeredServices)
{
AddMessageTypesHandledBy(
serviceDescriptor.ServiceType,
handledMessageTypeNames);
}
// TODO unit test case
if (!handledMessageTypeNames.Any())
{
throw new InvalidOperationException(
"Cannot initialise the incoming message pipeline because no message handlers were configured - there is nothing to listen for.");
}
await messageSource
.EnsureSubscribed(
new SubscriptionDescription(
endpointName,
handledMessageTypeNames.Distinct()),
cancellationToken)
.ConfigureAwait(false);
}