{"action":"created","comment":{"url":"https://api.github.com/repos/Particular/NServiceBus/pulls/comments/71336621","id":71336621,"diff_hunk":"@@ -82,15 +91,26 @@ public static class MessageDrivenSubscriptionsConfigExtensions\n         public static void RegisterPublisherForAssembly<T>(this RoutingSettings<T> routingSettings, Assembly eventAssembly, string eventNamespace, string publisherEndpoint) where T : TransportDefinition, IMessageDrivenSubscriptionTransport\n         {\n             Guard.AgainstNull(nameof(eventAssembly), eventAssembly);\n-            Guard.AgainstNull(nameof(eventNamespace), eventNamespace);\n             Guard.AgainstNullAndEmpty(nameof(publisherEndpoint), publisherEndpoint);\n \n             ThrowOnAddress(publisherEndpoint);\n \n-            routingSettings.Settings.GetOrCreate<Publishers>().Add(eventAssembly, eventNamespace, publisherEndpoint);\n-        }\n+            // empty namespace is null, not string.empty\n+            eventNamespace = eventNamespace == string.Empty ? null : eventNamespace;\n \n-        static void ThrowOnAddress(string publisherEndpoint)\n+            routingSettings.Settings.GetOrCreate<ConfiguredPublishers>().Add((publishers, knownMessageTypes) =>\n+            {\n+                foreach (var knownMessageType in knownMessageTypes)\n+                {\n+                    if (knownMessageType.Assembly == eventAssembly && knownMessageType.Namespace == eventNamespace)\n+                    {\n+                        publishers.Add(knownMessageType, publisherEndpoint);","path":"src/NServiceBus.Core/Routing/MessageDrivenSubscriptions/MessageDrivenSubscriptionsConfigExtensions.cs","position":60,"original_position":60,"commit_id":"71410030083a67fa411f69615d47787e56d8286c","original_commit_id":"71410030083a67fa411f69615d47787e56d8286c","user":{"login":"timbussmann","id":3524870,"avatar_url":"https://avatars.githubusercontent.com/u/3524870?v=3","gravatar_id":"","url":"https://api.github.com/users/timbussmann","html_url":"https://github.com/timbussmann","followers_url":"https://api.github.com/users/timbussmann/followers","following_url":"https://api.github.com/users/timbussmann/following{/other_user}","gists_url":"https://api.github.com/users/timbussmann/gists{/gist_id}","starred_url":"https://api.github.com/users/timbussmann/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timbussmann/subscriptions","organizations_url":"https://api.github.com/users/timbussmann/orgs","repos_url":"https://api.github.com/users/timbussmann/repos","events_url":"https://api.github.com/users/timbussmann/events{/privacy}","received_events_url":"https://api.github.com/users/timbussmann/received_events","type":"User","site_admin":false},"body":"@danielmarbach I think a shared code here would complicate things mainly because we add the `Publishers` or the `UnicastRoutingTable` which are two entirely different classes (which is something we should maybe review, but out of scope). I'd vote to go with the current proposal","created_at":"2016-07-19T13:24:33Z","updated_at":"2016-07-19T13:24:33Z","html_url":"https://github.com/Particular/NServiceBus/pull/3938#discussion_r71336621","pull_request_url":"https://api.github.com/repos/Particular/NServiceBus/pulls/3938","_links":{"self":{"href":"https://api.github.com/repos/Particular/NServiceBus/pulls/comments/71336621"},"html":{"href":"https://github.com/Particular/NServiceBus/pull/3938#discussion_r71336621"},"pull_request":{"href":"https://api.github.com/repos/Particular/NServiceBus/pulls/3938"}}},"pull_request":{"url":"https://api.github.com/repos/Particular/NServiceBus/pulls/3938","id":77448888,"html_url":"https://github.com/Particular/NServiceBus/pull/3938","diff_url":"https://github.com/Particular/NServiceBus/pull/3938.diff","patch_url":"https://github.com/Particular/NServiceBus/pull/3938.patch","issue_url":"https://api.github.com/repos/Particular/NServiceBus/issues/3938","number":3938,"state":"open","locked":false,"title":"Avoid assembly get types","user":{"login":"timbussmann","id":3524870,"avatar_url":"https://avatars.githubusercontent.com/u/3524870?v=3","gravatar_id":"","url":"https://api.github.com/users/timbussmann","html_url":"https://github.com/timbussmann","followers_url":"https://api.github.com/users/timbussmann/followers","following_url":"https://api.github.com/users/timbussmann/following{/other_user}","gists_url":"https://api.github.com/users/timbussmann/gists{/gist_id}","starred_url":"https://api.github.com/users/timbussmann/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timbussmann/subscriptions","organizations_url":"https://api.github.com/users/timbussmann/orgs","repos_url":"https://api.github.com/users/timbussmann/repos","events_url":"https://api.github.com/users/timbussmann/events{/privacy}","received_events_url":"https://api.github.com/users/timbussmann/received_events","type":"User","site_admin":false},"body":"Connects to Particular/V6Launch#68\r\n\r\nRemoves calls to `Assembly.GetTypes` and uses the known message types received from our message scanning process instead.\r\n\r\nThis means we need to delay registrations until the assembly scanning took place, that's why registrations are just added to a list and then executed later at feature setup time.\r\n\r\n@danielmarbach I know you were not very happy about the Action approach, looking at the PR, do you think it's worth adding some additional classes instead?\r\n\r\n@Particular/nservicebus-maintainers @DavidBoike @SzymonPobiega please review","created_at":"2016-07-14T12:37:37Z","updated_at":"2016-07-19T13:24:33Z","closed_at":null,"merged_at":null,"merge_commit_sha":"08fd541f3e448e09fc2ac23d3fa9d3d97f31a1c9","assignee":{"login":"danielmarbach","id":174258,"avatar_url":"https://avatars.githubusercontent.com/u/174258?v=3","gravatar_id":"","url":"https://api.github.com/users/danielmarbach","html_url":"https://github.com/danielmarbach","followers_url":"https://api.github.com/users/danielmarbach/followers","following_url":"https://api.github.com/users/danielmarbach/following{/other_user}","gists_url":"https://api.github.com/users/danielmarbach/gists{/gist_id}","starred_url":"https://api.github.com/users/danielmarbach/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/danielmarbach/subscriptions","organizations_url":"https://api.github.com/users/danielmarbach/orgs","repos_url":"https://api.github.com/users/danielmarbach/repos","events_url":"https://api.github.com/users/danielmarbach/events{/privacy}","received_events_url":"https://api.github.com/users/danielmarbach/received_events","type":"User","site_admin":false},"assignees":[{"login":"danielmarbach","id":174258,"avatar_url":"https://avatars.githubusercontent.com/u/174258?v=3","gravatar_id":"","url":"https://api.github.com/users/danielmarbach","html_url":"https://github.com/danielmarbach","followers_url":"https://api.github.com/users/danielmarbach/followers","following_url":"https://api.github.com/users/danielmarbach/following{/other_user}","gists_url":"https://api.github.com/users/danielmarbach/gists{/gist_id}","starred_url":"https://api.github.com/users/danielmarbach/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/danielmarbach/subscriptions","organizations_url":"https://api.github.com/users/danielmarbach/orgs","repos_url":"https://api.github.com/users/danielmarbach/repos","events_url":"https://api.github.com/users/danielmarbach/events{/privacy}","received_events_url":"https://api.github.com/users/danielmarbach/received_events","type":"User","site_admin":false}],"milestone":null,"commits_url":"https://api.github.com/repos/Particular/NServiceBus/pulls/3938/commits","review_comments_url":"https://api.github.com/repos/Particular/NServiceBus/pulls/3938/comments","review_comment_url":"https://api.github.com/repos/Particular/NServiceBus/pulls/comments{/number}","comments_url":"https://api.github.com/repos/Particular/NServiceBus/issues/3938/comments","statuses_url":"https://api.github.com/repos/Particular/NServiceBus/statuses/71410030083a67fa411f69615d47787e56d8286c","head":{"label":"Particular:avoid-assembly-get-types","ref":"avoid-assembly-get-types","sha":"71410030083a67fa411f69615d47787e56d8286c","user":{"login":"Particular","id":5038441,"avatar_url":"https://avatars.githubusercontent.com/u/5038441?v=3","gravatar_id":"","url":"https://api.github.com/users/Particular","html_url":"https://github.com/Particular","followers_url":"https://api.github.com/users/Particular/followers","following_url":"https://api.github.com/users/Particular/following{/other_user}","gists_url":"https://api.github.com/users/Particular/gists{/gist_id}","starred_url":"https://api.github.com/users/Particular/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Particular/subscriptions","organizations_url":"https://api.github.com/users/Particular/orgs","repos_url":"https://api.github.com/users/Particular/repos","events_url":"https://api.github.com/users/Particular/events{/privacy}","received_events_url":"https://api.github.com/users/Particular/received_events","type":"Organization","site_admin":false},"repo":{"id":1056713,"name":"NServiceBus","full_name":"Particular/NServiceBus","owner":{"login":"Particular","id":5038441,"avatar_url":"https://avatars.githubusercontent.com/u/5038441?v=3","gravatar_id":"","url":"https://api.github.com/users/Particular","html_url":"https://github.com/Particular","followers_url":"https://api.github.com/users/Particular/followers","following_url":"https://api.github.com/users/Particular/following{/other_user}","gists_url":"https://api.github.com/users/Particular/gists{/gist_id}","starred_url":"https://api.github.com/users/Particular/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Particular/subscriptions","organizations_url":"https://api.github.com/users/Particular/orgs","repos_url":"https://api.github.com/users/Particular/repos","events_url":"https://api.github.com/users/Particular/events{/privacy}","received_events_url":"https://api.github.com/users/Particular/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/Particular/NServiceBus","description":"The 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