private void PollMethod()
{
while (true)
{
lock (dataLock)
{
if (NotifyFilter.HasFlag(GwNotifyFilter.EventState))
{
CheckEventChanges();
}
// any WvW
if ((notifyFilter & GwNotifyFilter.WvW) != 0)
{
CheckWvWMatchChanges();
CheckWvWDetailChanges();
}
}
if (DataReady != null)
{
DataReady(this);
}
Thread.Sleep(PollFrequency);
}
}
public ScenarioNotificationData(ScenarioData scenarioData, NotifyFilter filter)
{
Assert.IsNotNull(scenarioData, "scenarioData");
Assert.IsNotNull(filter, "filter");
this.ScenarioData = scenarioData;
this.Filter = filter;
}
/// <inheritdoc />
/// <remarks>
/// You can add the same routine again and we will call you once for each registered callback. Caller should handle that logic
/// </remarks>
public async Task RegisterCallbackAsync(NotifyFilter filter, Func <ScenarioData, Task> callbackRoutine, CancellationToken token)
{
Assert.IsNotNull(filter, "filter");
Assert.IsNotNull(callbackRoutine, "callbackRoutine");
this.Logger.LogMessage("RegisterCallbackAsync:: Registering callback with Filter '{0}'", filter);
if (!this.GetCallbackSupportedScenario().Contains(filter.TargetScenario))
{
throw new NotSupportedException(
string.Format(CultureInfo.InvariantCulture, "Scenario : '{0}' not supported for callback", filter.TargetScenario));
}
await this.singleAccessLock.WaitAsync(token).ConfigureAwait(false);
try
{
if (!this.callbackMap.ContainsKey(filter))
{
this.callbackMap[filter] = new List <Func <ScenarioData, Task> > {
callbackRoutine
};
}
else
{
this.callbackMap[filter].Add(callbackRoutine);
}
if (this.newEventSearcherTask == null)
{
this.Logger.LogMessage("RegisterCallbackAsync:: Kicking off Searcher Task");
// kick off tasks that continuously monitors for new signals.
this.newEventSearcherTask = this.taskRunner.Run(() => this.SearchForNewSignalsInClusterAsync(token), this.InternalTokenSource.Token);
}
if (this.eventDispatcherTask == null)
{
this.Logger.LogMessage("RegisterCallbackAsync:: Kicking off Dispatcher Task");
// kick off a task that continuously looks for new signals seen and invoke callbacks associated with them.
this.eventDispatcherTask = this.taskRunner.Run(() => this.DispatchSignalsAsync(token), this.InternalTokenSource.Token);
}
}
finally
{
this.singleAccessLock.Release();
}
}
/// <inheritdoc />
public async Task UnRegisterCallbackAsync(NotifyFilter filter, Func <ScenarioData, Task> callbackRoutine, CancellationToken token)
{
Assert.IsNotNull(filter, "filter");
Assert.IsNotNull(callbackRoutine, "callbackRoutine");
this.Logger.LogMessage("UnRegisterCallbackAsync:: UnRegistering callback with Filter '{0}'", filter);
if (!this.GetCallbackSupportedScenario().Contains(filter.TargetScenario))
{
throw new NotSupportedException(
string.Format(CultureInfo.InvariantCulture, "Scenario : '{0}' not supported for callback", filter.TargetScenario));
}
await this.singleAccessLock.WaitAsync(token).ConfigureAwait(false);
this.Logger.LogMessage("Remove : Got Lock");
try
{
if (!this.callbackMap.ContainsKey(filter))
{
throw new CallbackNotRegisteredException(string.Format(CultureInfo.InvariantCulture, "Callback for Filter: {0} not registered", filter));
}
if (!this.callbackMap[filter].Contains(callbackRoutine))
{
throw new CallbackNotRegisteredException(string.Format(CultureInfo.InvariantCulture, "Callback for Filter: {0} with Delegage: {1} not registered", filter, callbackRoutine));
}
this.Logger.LogMessage("Remove : Removing Now");
this.callbackMap[filter].Remove(callbackRoutine);
// if there are no callbacks for this filter, remove the entry from map.
if (!this.callbackMap[filter].Any())
{
this.callbackMap[filter] = null;
this.callbackMap.Remove(filter);
this.Logger.LogMessage("Remove : Emptying Nulling");
}
}
finally
{
this.Logger.LogMessage("Remove : Releasing Lock");
this.singleAccessLock.Release();
}
}
void Register()
{
if (_key == null)
{
return;
}
var watchSubTree = NotifyFilter.Has(RegistryNotifyFilter.WatchSubTree);
var notifyFilter = NotifyFilter & ~RegistryNotifyFilter.WatchSubTree;
var result = NativeMethods.AdvApi32.RegNotifyChangeKeyValue(_key.Handle, watchSubTree, notifyFilter, _waitEvent.SafeWaitHandle, true);
if (NativeUtils.Failed(result))
{
throw new Win32Exception(result);
}
_registeredWaitHandle = ThreadPool.RegisterWaitForSingleObject(_waitEvent, _callback, null, -1, true);
}
void INotifySource2.SetNotifyFilter(NotifyFilter in_NotifyFilter, UserThread in_pUserThreadFilter)
{
notifyFilter = in_NotifyFilter;
userThread = in_pUserThreadFilter;
}
void INotifySource2.SetNotifyFilter(NotifyFilter in_NotifyFilter, UserThread in_pUserThreadFilter) {
notifyFilter = in_NotifyFilter;
userThread = in_pUserThreadFilter;
}
private async Task <IList <Func <ScenarioData, Task> > > GetCallbacksForFilterAsync(NotifyFilter filter, CancellationToken token)
{
await this.singleAccessLock.WaitAsync(token).ConfigureAwait(false);
try
{
return(this.callbackMap[filter]);
}
catch (KeyNotFoundException)
{
this.Logger.LogWarning("GetCallbacksForFilterAsync:: Key {0} not found", filter);
throw;
}
finally
{
this.singleAccessLock.Release();
}
}
/// <summary>
/// Get new signals from store that matches the given filter
/// </summary>
/// <param name="filter"></param>
/// <param name="token"></param>
/// <returns></returns>
private async Task <IEnumerable <ScenarioData> > GetNewSignalsMatchingGivenFilterAsync(NotifyFilter filter, CancellationToken token)
{
var allSignalsSeen = await this.GetSignalsForScenarioAsync(
filter.TargetScenario,
await this.GetDurationToLookForNewSignalsForScenarioAsync(filter.TargetScenario, token).ConfigureAwait(false),
token).ConfigureAwait(false);
var newSignalsMatchingFilter = new List <ScenarioData>();
foreach (var oneSignal in allSignalsSeen.OrderBy(signal => signal.OriginTime))
{
// Encapsulate the new information into a shareable abstraction. We mark the event seen time as current time
// which may not be completely accurate but it's close enough for all purposes.
var scenarioData = new ScenarioData(filter.TargetScenario, oneSignal, DateTime.UtcNow);
if (DateTime.UtcNow - oneSignal.OriginTime > filter.SignalAvailableForAtLeastDuration)
{
if (!filter.NotifyOnlyForUnique || !await this.IsSignalAlreadyReportedAsync(scenarioData, token).ConfigureAwait(false))
{
newSignalsMatchingFilter.Add(scenarioData);
}
}
}
return(newSignalsMatchingFilter);
}
private IService GetService(ParameterValue[] parameterValues, bool watchForCreate, bool watchForChanges, bool watchForRename, bool watchForDelete, NotifyFilter notifyFilter = null)
{
var designer = tester.CreateDesigner();
designer.Properties[DirectoryWatchShared.WatchForChangesPropertyName].Value = watchForChanges;
designer.Properties[DirectoryWatchShared.WatchForCreationPropertyName].Value = watchForCreate;
designer.Properties[DirectoryWatchShared.WatchForDeletionsPropertyName].Value = watchForDelete;
designer.Properties[DirectoryWatchShared.WatchForRenamingPropertyName].Value = watchForRename;
if (notifyFilter != null)
{
designer.Properties[DirectoryWatchShared.NotifyFilterPropertyName].Value = notifyFilter;
}
return(tester.Compile(designer).Execute(parameterValues));
}
private IService GetService(string path, bool watchForCreate, bool watchForChanges, bool watchForRename, bool watchForDelete, NotifyFilter notifyFilter = null, string filter = null, bool includeSubdirectories = false)
{
return(GetService(GetParameterValues(path, filter, includeSubdirectories), watchForCreate, watchForChanges, watchForRename, watchForDelete, notifyFilter));
}
public static extern bool ReadDirectoryChangesW(IntPtr hDirectory, IntPtr lpBuffer, int nBufferLength, [MarshalAs(UnmanagedType.Bool)] bool bWatchSubtree, NotifyFilter dwNotifyFilter, ref int lpBytesReturned, IntPtr lpOverlapped, IntPtr lpCompletionRoutine);
public static extern IntPtr FindFirstChangeNotification(string lpPathName, bool bWatchSubtree, NotifyFilter dwNotifyFilter);