public async Task ConnectAsync(string url)
{
_url = url;
while (!IsConnectionFinished())
{
// Wait until current connection ends.
_wrapperAdapter.TaskDelay(1000).Wait();
}
await ConnectAsync();
}
public void Start()
{
//Delay first execution until expected time has passed
_wrappedAdapter.TaskDelay(_interval * 1000).Wait();
var schedulerTask = PeriodicTaskFactory.Start(() => AddSegmentsToQueue(), intervalInMilliseconds: _interval * 1000, cancelToken: _cancelTokenSource.Token);
}
private async Task BuildJsonAndPost(List <Event> events, Util.SplitStopwatch clock)
{
var eventsJson = JsonConvert.SerializeObject(events, new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore
});
for (int i = 0; i < MaxAttempts; i++)
{
if (i > 0)
{
_wrapperAdapter.TaskDelay(500).Wait();
}
var response = await ExecutePost(EventsUrlTemplate, eventsJson);
RecordTelemetry(nameof(SendBulkEventsTask), (int)response.statusCode, response.content, ResourceEnum.EventSync, clock);
if (response.statusCode >= System.Net.HttpStatusCode.OK && response.statusCode < System.Net.HttpStatusCode.Ambiguous)
{
_log.Debug($"Post bulk events success in {i} attempts.");
return;
}
}
_log.Debug($"Post bulk events fail after {MaxAttempts} attempts.");
}
public void Start()
{
lock (_lock)
{
if (_running || _statusManager.IsDestroyed())
{
return;
}
_running = true;
_cancelTokenSource = new CancellationTokenSource();
_tasksManager.Start(() =>
{
//Delay first execution until expected time has passed
var intervalInMilliseconds = _interval * 1000;
_wrappedAdapter.TaskDelay(intervalInMilliseconds).Wait();
if (_running)
{
_tasksManager.Start(() => _worker.ExecuteTasks(_cancelTokenSource.Token), _cancelTokenSource, "Segments Fetcher Worker.");
_tasksManager.StartPeriodic(() => AddSegmentsToQueue(), intervalInMilliseconds, _cancelTokenSource, "Segmennnnts Fetcher Add to Queue.");
}
}, _cancelTokenSource, "Main Segments Fetcher.");
}
}
public void Start()
{
_wrapperAdapter
.TaskDelay(_firstPushWindow * 1000)
.ContinueWith((t) => {
SendBulkEvents();
PeriodicTaskFactory.Start(() => { SendBulkEvents(); }, _interval * 1000, _cancellationTokenSource.Token);
});
}
public void Start()
{
Task.Factory.StartNew(() =>
{
while (true)
{
if (_gates.IsSDKReady(0))
{
//Delay first execution until expected time has passed
var intervalInMilliseconds = _interval * 1000;
_wrappedAdapter.TaskDelay(intervalInMilliseconds).Wait();
PeriodicTaskFactory.Start(() => AddSegmentsToQueue(), intervalInMilliseconds, _cancelTokenSource.Token);
break;
}
_wrappedAdapter.TaskDelay(500).Wait();
}
});
}
private async Task <SyncResult> AttempSegmentSync(string name, long targetChangeNumber, FetchOptions fetchOptions, int maxRetries, int?retryDelayMs, bool withBackoff)
{
try
{
var remainingAttempts = maxRetries;
if (withBackoff)
{
_backOffSplits.Reset();
}
while (true)
{
remainingAttempts--;
await _segmentFetcher.Fetch(name, fetchOptions);
if (targetChangeNumber <= _segmentCache.GetChangeNumber(name))
{
return(new SyncResult(true, remainingAttempts));
}
else if (remainingAttempts <= 0)
{
return(new SyncResult(false, remainingAttempts));
}
var delay = withBackoff ? _backOffSplits.GetInterval(inMiliseconds: true) : retryDelayMs.Value;
_wrapperAdapter.TaskDelay((int)delay).Wait();
}
}
catch (Exception ex)
{
_log.Debug("Exception while AttempSplitsSync.", ex);
}
return(new SyncResult(false, 0));
}
public void Start()
{
lock (_lock)
{
if (_running)
{
return;
}
_running = true;
_tasksManager.Start(() =>
{
_wrapperAdapter.TaskDelay(_firstPushWindow * 1000).Wait();
_tasksManager.StartPeriodic(() => SendBulkEvents(), _interval * 1000, _cancellationTokenSource, "Send Bulk Events.");
}, new CancellationTokenSource(), "Main Events Log.");
}
}
private void ScheduleNextTokenRefresh(double time)
{
try
{
var sleepTime = Convert.ToInt32(time) * 1000;
_log.Debug($"ScheduleNextTokenRefresh sleep time : {sleepTime} miliseconds.");
_wrapperAdapter
.TaskDelay(sleepTime)
.ContinueWith((t) =>
{
_log.Debug("Starting ScheduleNextTokenRefresh ...");
StopSse();
StartSse();
});
}
catch (Exception ex)
{
_log.Error($"ScheduleNextTokenRefresh: {ex.Message}");
}
}
public void Start()
{
lock (_lock)
{
if (_running)
{
return;
}
_running = true;
_tasksManager.Start(() =>
{
//Delay first execution until expected time has passed
var intervalInMilliseconds = _configurationOptions.TelemetryRefreshRate * 1000;
_wrapperAdapter.TaskDelay(intervalInMilliseconds).Wait();
_tasksManager.StartPeriodic(() => RecordStats(), intervalInMilliseconds, _cancellationTokenSource, "Telemetry Stats.");
}, _cancellationTokenSource, "Main Telemetry.");
}
}
public void Start()
{
_tasksManager.Start(() =>
{
try
{
while (!_synchronizer.SyncAll(_shutdownCancellationTokenSource, asynchronous: false))
{
_wrapperAdapter.TaskDelay(500).Wait();
}
_statusManager.SetReady();
_telemetrySyncTask.RecordConfigInit();
_synchronizer.StartPeriodicDataRecording();
if (_streamingEnabled)
{
_log.Debug("Starting streaming mode...");
var connected = _pushManager.StartSse().Result;
if (connected)
{
return;
}
}
_log.Debug("Starting polling mode ...");
_synchronizer.StartPeriodicFetching();
_telemetryRuntimeProducer.RecordStreamingEvent(new StreamingEvent(EventTypeEnum.SyncMode, (int)SyncModeEnum.Polling));
}
catch (Exception ex)
{
_log.Debug("Exception initialization SDK.", ex);
}
}, _shutdownCancellationTokenSource, "SDK Initialization");
}
private async Task BuildJsonAndPost(List <KeyImpression> impressions, Util.SplitStopwatch clock)
{
var impressionsJson = ConvertToJson(impressions);
for (int i = 0; i < MaxAttempts; i++)
{
if (i > 0)
{
_wrapperAdapter.TaskDelay(500).Wait();
}
var response = await ExecutePost(TestImpressionsUrlTemplate, impressionsJson);
RecordTelemetry(nameof(SendBulkImpressions), (int)response.statusCode, response.content, ResourceEnum.ImpressionSync, clock);
if (response.statusCode >= System.Net.HttpStatusCode.OK && response.statusCode < System.Net.HttpStatusCode.Ambiguous)
{
_log.Debug($"Post bulk impressions success in {i} attempts.");
return;
}
}
_log.Debug($"Post bulk impressions fail after {MaxAttempts} attempts.");
}
private void ScheduleNextTokenRefresh(double time)
{
try
{
ForceCancellationToken();
_cancellationTokenSourceRefreshToken = new CancellationTokenSource();
var sleepTime = Convert.ToInt32(time) * 1000;
_log.Debug($"ScheduleNextTokenRefresh sleep time : {sleepTime} miliseconds.");
_refreshTokenTask = _wrapperAdapter
.TaskDelay(sleepTime)
.ContinueWith((t) =>
{
_log.Debug("Starting ScheduleNextTokenRefresh ...");
StopSse();
StartSse();
}, _cancellationTokenSourceRefreshToken.Token);
}
catch (Exception ex)
{
_log.Error($"ScheduleNextTokenRefresh: {ex.Message}");
}
}
private async Task ReadStreamAsync(Stream stream, CancellationToken cancellationToken)
{
_log.Debug($"Reading stream ....");
try
{
while (!cancellationToken.IsCancellationRequested && (IsConnected() || _firstEvent))
{
if (stream.CanRead && (IsConnected() || _firstEvent))
{
Array.Clear(_buffer, 0, BufferSize);
var timeoutToken = new CancellationTokenSource();
var timeoutTask = _wrapperAdapter.TaskDelay(ReadTimeoutMs, timeoutToken.Token);
var streamReadTask = stream.ReadAsync(_buffer, 0, BufferSize, cancellationToken);
// Creates a task that will complete when any of the supplied tasks have completed.
// Returns: A task that represents the completion of one of the supplied tasks. The return task's Result is the task that completed.
var finishedTask = await _wrapperAdapter.WhenAny(streamReadTask, timeoutTask);
try
{
if (finishedTask == timeoutTask)
{
throw new ReadStreamException(SSEClientActions.RETRYABLE_ERROR, $"Streaming read time out after {ReadTimeoutMs} seconds.");
}
int len = streamReadTask.Result;
if (len == 0)
{
throw new ReadStreamException(SSEClientActions.RETRYABLE_ERROR, "Streaming end of the file.");
}
var notificationString = _encoder.GetString(_buffer, 0, len);
_log.Debug($"Read stream encoder buffer: {notificationString}");
if (_firstEvent)
{
ProcessFirtsEvent(notificationString);
}
if (notificationString != KeepAliveResponse && IsConnected())
{
var lines = notificationString.Split(_notificationSplitArray, StringSplitOptions.None);
foreach (var line in lines)
{
if (!string.IsNullOrEmpty(line))
{
var eventData = _notificationParser.Parse(line);
if (eventData != null)
{
if (eventData.Type == NotificationType.ERROR)
{
var notificationError = (NotificationError)eventData;
ProcessErrorNotification(notificationError);
}
else
{
DispatchEvent(eventData);
}
}
}
}
}
}
finally
{
_log.Debug("Disposing Stream Read Task...");
timeoutToken.Cancel();
timeoutToken.Dispose();
_wrapperAdapter.TaskWaitAndDispose(timeoutTask, streamReadTask, finishedTask);
}
}
}
}
catch (ReadStreamException ex)
{
_log.Debug("ReadStreamException", ex);
throw ex;
}
catch (Exception ex)
{
if (!cancellationToken.IsCancellationRequested)
{
_log.Debug("Stream ended abruptly, proceeding to reconnect.", ex);
throw new ReadStreamException(SSEClientActions.RETRYABLE_ERROR, ex.Message);
}
_log.Debug("Stream Token cancelled.", ex);
}
finally
{
_log.Debug($"Stop read stream");
}
}
