public async Task OpenAsync(string correlationId)
{
if (_opened == true)
{
return;
}
// Create filter if it doesn't exist
if (!Directory.Exists(_path))
{
Directory.CreateDirectory(_path);
}
// Restart cleanup process
if (_cleanupInterval != null)
{
_cleanupInterval.Stop();
}
_cleanupInterval = new FixedRateTimer(
() => { Cleanup(null); },
(int)_cleanupTimeout, (int)_cleanupTimeout
);
_cleanupInterval.Start();
_opened = true;
await Task.Delay(0);
}
public async virtual void PerformMonitorAsync()
{
// 1. Check lock - if it's locked, don't process tracking records
if (!_lock.TryAcquireLock(CorrelationId, $"ThroughputMonitor ({InternalCollectionNames})", TimerInterval))
{
_logger.Warn(CorrelationId, $"PerformMonitorAsync: Skip to monitor throughput of '{InternalCollectionNames}' collection(s) (monitoring is locked). The next monitoring is scheduled to {DateTime.UtcNow.AddMilliseconds(TimerInterval).ToString()} UTC.");
return;
}
// 2. Stop timer
_timer?.Stop();
_logger.Trace(CorrelationId, $"PerformMonitorAsync: Wake-up to monitor throughput of '{InternalCollectionNames}' collection(s).");
foreach (var collectionName in CollectionNames)
{
// 3. Get throughput metrics for each collection
var resourceUri = _metricsService.GetResourceUri(CorrelationId, ResourceGroup, AccountName, AccessKey, DatabaseName, collectionName);
var throughputMetrics = await _metricsService.GetResourceMetricsAsync(CorrelationId, resourceUri,
oDataQueryBuilder => oDataQueryBuilder
.AddTime(DateTime.UtcNow.Subtract(TimeSpan.FromMinutes(8)), DateTime.UtcNow.Subtract(TimeSpan.FromMinutes(4)), MetricInterval.PT1M)
.And()
.AddMetric(CosmosDBMetric.Max_RUs_Per_Second));
// 4. Update throughput if needed
await PerformUpdateThroughputAsync(CorrelationId, collectionName, throughputMetrics);
}
_logger.Trace(CorrelationId, $"PerformMonitorAsync: Completed to monitor throughput of '{InternalCollectionNames}' collection(s). The next monitoring is scheduled to {DateTime.UtcNow.AddMilliseconds(TimerInterval).ToString()} UTC.");
// 5. Restart timer
_timer?.Restart();
}
public Task CloseAsync(string correlationId)
{
_timer.Stop();
_logger.Trace(correlationId, "Dummy controller closed");
return(Task.Delay(0));
}
public Task CloseAsync(string correlationId)
{
if (_timer != null && _timer.IsStarted)
{
_timer.Stop();
}
return(Task.Delay(0));
}
/// <summary>
/// Closes component and frees used resources.
/// </summary>
/// <param name="correlationId">(optional) transaction id to trace execution through call chain.</param>
public async Task CloseAsync(string correlationId)
{
// Log all remaining messages before closing
Dump();
if (_timer != null)
{
_timer.Stop();
_timer = null;
}
_client = null;
await Task.Delay(0);
}