public async Task <MessageRoute> RouteForDestination(Envelope envelope)
{
envelope.Destination = _lookup.Resolve(envelope.Destination);
var messageType = envelope.Message.GetType();
var routes = await Route(messageType);
var candidate = routes.FirstOrDefault(x => x.MatchesEnvelope(envelope));
if (candidate != null)
{
return(candidate);
}
var modelWriter = _serializers.WriterFor(messageType);
var contentType = envelope.ContentType ?? envelope.AcceptedContentTypes.Intersect(modelWriter.ContentTypes).FirstOrDefault()
?? "application/json";
var channel = _channels.GetOrBuildChannel(envelope.Destination);
return(new MessageRoute(
messageType,
modelWriter,
channel,
contentType));
}
public IChannel GetOrBuildChannel(Uri address)
{
var uri = _lookups == null ? address : _lookups.Resolve(address);
assertValidTransport(uri);
return(_channels.GetOrAdd(uri, u => new Lazy <IChannel>(() => buildChannel(u))).Value);
}
public async Task ApplyLookups(UriAliasLookup lookups)
{
var all = Subscriptions.Select(x => x.Destination).Where(x => x != null).Distinct().ToArray();
await lookups.ReadAliases(all);
foreach (var subscription in Subscriptions.Where(x => x.Destination != null))
{
subscription.Destination = lookups.Resolve(subscription.Destination);
}
}
public void ReadAlias(UriAliasLookup lookups)
{
var real = lookups.Resolve(Uri);
if (real != Uri)
{
Alias = Uri;
Uri = real;
}
}
public IChannel GetOrBuildChannel(Uri address)
{
var uri = _lookups == null ? address : _lookups.Resolve(address);
assertValidTransport(uri);
if (_channels.TryFind(uri, out var channel))
{
return(channel);
}
lock (_channelLock)
{
if (!_channels.TryFind(uri, out channel))
{
channel = buildChannel(address);
_channels = _channels.AddOrUpdate(address, channel);
}
return(channel);
}
}
public void ReadAlias(UriAliasLookup lookups)
{
Uri = lookups.Resolve(Uri);
}