Update: SignalR 2.0.3 Migration; Noticeboards

Migrate all SignalR 1.x Persistent Connections to SignalR 2.x Hubs. Abstracts ScheduledTaskStatus with core interface and adds a Mock for optional status reporting. Noticeboards rewritten (with new theme) to be more resilient and accurate.
2014-06-01 23:27:07 +10:00
parent f6fae26bc7
commit 4cd57f4a90
116 changed files with 9874 additions and 6462 deletions
@@ -0,0 +1,86 @@
+using Disco.Data.Repository.Monitor;
+using Disco.Services.Authorization;
+using Disco.Services.Web.Signalling;
+using Microsoft.AspNet.SignalR;
+using Microsoft.AspNet.SignalR.Hubs;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Reactive.Linq;
+using Disco.Models.Repository;
+using Disco.Data.Repository;
+
+namespace Disco.Services.Devices
+{
+    [HubName("deviceUpdates"), DiscoHubAuthorizeAll(Claims.Device.Show, Claims.Device.ShowAttachments)]
+    public class DeviceUpdatesHub : Hub
+    {
+        private const string UserPrefix = "Device_";
+        public static IHubContext HubContext { get; private set; }
+
+        private static IDisposable RepositoryBeforeSubscription;
+        private static IDisposable RepositoryAfterSubscription;
+
+        static DeviceUpdatesHub()
+        {
+            HubContext = GlobalHost.ConnectionManager.GetHubContext<DeviceUpdatesHub>();
+
+            // Subscribe to Repository Monitor for Changes
+            RepositoryBeforeSubscription = RepositoryMonitor.StreamBeforeCommit
+                .Where(e => e.EntityType == typeof(DeviceAttachment) && e.EventType == RepositoryMonitorEventType.Deleted)
+                .Subscribe(RepositoryEventBefore);
+            RepositoryAfterSubscription = RepositoryMonitor.StreamAfterCommit
+                .Where(e => e.EntityType == typeof(DeviceAttachment) && e.EventType == RepositoryMonitorEventType.Added)
+                .Subscribe(RepositoryAfterEvent);
+        }
+
+        private static string GroupName(string DeviceSerialNumber)
+        {
+            return UserPrefix + DeviceSerialNumber;
+        }
+
+        public override Task OnConnected()
+        {
+            var deviceSerialNumber = Context.QueryString["DeviceSerialNumber"];
+
+            if (string.IsNullOrWhiteSpace(deviceSerialNumber))
+                throw new ArgumentNullException("DeviceSerialNumber");
+
+            Groups.Add(Context.ConnectionId, GroupName(deviceSerialNumber));
+
+            return base.OnConnected();
+        }
+
+        private static void RepositoryEventBefore(RepositoryMonitorEvent e)
+        {
+            if (e.EventType == RepositoryMonitorEventType.Deleted)
+            {
+                if (e.EntityType == typeof(DeviceAttachment))
+                {
+                    var repositoryAttachment = (DeviceAttachment)e.Entity;
+                    string attachmentDeviceSerialNumber;
+
+                    using (DiscoDataContext Database = new DiscoDataContext())
+                        attachmentDeviceSerialNumber = Database.DeviceAttachments.Where(a => a.Id == repositoryAttachment.Id).Select(a => a.DeviceSerialNumber).First();
+
+                    HubContext.Clients.Group(GroupName(attachmentDeviceSerialNumber)).removeAttachment(repositoryAttachment.Id);
+                }
+            }
+        }
+
+        private static void RepositoryAfterEvent(RepositoryMonitorEvent e)
+        {
+            if (e.EventType == RepositoryMonitorEventType.Added)
+            {
+                if (e.EntityType == typeof(DeviceAttachment))
+                {
+                    var a = (DeviceAttachment)e.Entity;
+
+                    HubContext.Clients.Group(GroupName(a.DeviceSerialNumber)).addAttachment(a.Id);
+                }
+            }
+        }
+    }
+}