/// <summary>
/// Constructor
/// </summary>
/// <param name="aSessionId">
/// The unique identifier of the session that the tab is in.
/// </param>
/// <param name="aTabKey">
/// An identifier for this tab, unique within its session.
/// </param>
/// <param name="aListener">
/// A listener that will be notified about changes to the state of the
/// event queue. Used to implement the "server health" app.
/// Important: The event-handler will be invoked while some app-state
/// locks are held. To avoid deadlock, it's a good idea to use
/// TabStatusQueue to transfer the events to another thread.
/// </param>
/// <param name="aClock">
/// Provides access to the current UTC time. Production code should
/// likely use ()=>DateTime.UtcNow, testing code will want more direct
/// control over the perceived time.
/// </param>
/// <param name="aTimeoutPolicy">
/// Policy on how long to keep long polls alive and how long to
/// keep a tab alive with no outstanding long poll.
/// </param>
/// <param name="aTimerThread">
/// Timer for scheduling maintenance work, such as checking for
/// expired tabs and long polls.
/// </param>
/// <param name="aAppsStateThread">
/// The soft thread for scheduling all asynchronous work. When we
/// get invoked from the timer thread, we dispatch back to this
/// thread before touching any of our mutable state.
/// </param>
/// <param name="aSession">
/// Something that wants to know when a tab should expire due to
/// inactivity.
/// </param>
/// <param name="aAppRecord">
/// AppRecord associated with the tab.
/// </param>
public ServerTab(
string aSessionId,
string aTabKey,
ITabStatusListener aListener,
Func<DateTime> aClock,
ServerTabTimeoutPolicy aTimeoutPolicy,
ITimerThread aTimerThread,
IStrand aAppsStateThread,
ISession aSession,
AppRecord aAppRecord)
{
SessionId = aSessionId;
iListener = aListener;
iAppsStateThread = aAppsStateThread;
iSession = aSession;
iTimerThread = aTimerThread;
iClock = aClock;
iTimeoutPolicy = aTimeoutPolicy;
TabKey = aTabKey;
AppRecord = aAppRecord;
iEventQueue = new JsonEventQueue(12000);// aEventQueue;
iLastRead = iClock();
iTimerCallback = iTimerThread.RegisterCallback(
()=>iAppsStateThread.ScheduleExclusive(DoMaintenance));
RescheduleMaintenance();
}
public AppSessionRecord(AppRecord aAppRecord)
{
AppRecord = aAppRecord;
}
public ServerTab CreateServerTab(string aSessionId, string aTabId, SessionRecord aSessionRecord, AppRecord aAppRecord)
{
return new ServerTab(aSessionId, aTabId, iTabStatusQueue, iClock, iTimeoutPolicy, iTimerThread, iAppsStateThread, aSessionRecord, aAppRecord);
}
//public
public ServerTab CreateTab(AppRecord aApp, string aUserId)
{
SwitchUser(aUserId);
ServerTab newServerTab;
iCounter += 1;
string tabKey = iCounter.ToString();
iListener.NewTab(Key, tabKey, iUserId, aApp.Id);
BrowserTabProxy browserTabProxy = new BrowserTabProxy();
browserTabProxy.ServerTab = newServerTab = Tabs[tabKey] = iAppsStateFactory.CreateServerTab(Key, tabKey, this, aApp);
User user;
if (iUserId==null || !iUserList.TryGetUserById(iUserId, out user))
{
user = null;
}
var serverTab = aApp.App.CreateTab(browserTabProxy, user);
newServerTab.AppTab = new AppThreadScheduler(serverTab, aApp.Strand);
return newServerTab;
}
public AppRecord AddApp(string aName, IRawXapp aApp)
{
return Apps[aName] = new AppRecord(aApp, aName, new Strand());
}