public override async Task ObserveAsync(CancellationToken token)
{
// If set, this observer will only run during the supplied interval.
// See Settings.xml, CertificateObserverConfiguration section, RunInterval parameter for an example.
if (RunInterval > TimeSpan.MinValue &&
DateTime.Now.Subtract(LastRunDateTime) < RunInterval)
{
return;
}
SetErrorWarningThresholds();
DriveInfo[] allDrives = DriveInfo.GetDrives();
if (ObserverManager.ObserverWebAppDeployed)
{
this.diskInfo = new StringBuilder();
}
foreach (var d in allDrives)
{
token.ThrowIfCancellationRequested();
if (!DiskUsage.ShouldCheckDrive(d))
{
continue;
}
// This section only needs to run if you have the FabricObserverWebApi app installed.
if (ObserverManager.ObserverWebAppDeployed)
{
_ = this.diskInfo.AppendFormat("\n\nDrive Name: {0}\n", d.Name);
// Logging.
_ = this.diskInfo.AppendFormat("Drive Type: {0}\n", d.DriveType);
_ = this.diskInfo.AppendFormat(" Volume Label : {0}\n", d.VolumeLabel);
_ = this.diskInfo.AppendFormat(" Filesystem : {0}\n", d.DriveFormat);
_ = this.diskInfo.AppendFormat(" Total Disk Size: {0} GB\n", d.TotalSize / 1024 / 1024 / 1024);
_ = this.diskInfo.AppendFormat(" Root Directory : {0}\n", d.RootDirectory);
_ = this.diskInfo.AppendFormat(" Free User : {0} GB\n", d.AvailableFreeSpace / 1024 / 1024 / 1024);
_ = this.diskInfo.AppendFormat(" Free Total: {0} GB\n", d.TotalFreeSpace / 1024 / 1024 / 1024);
_ = this.diskInfo.AppendFormat(" % Used : {0}%\n", DiskUsage.GetCurrentDiskSpaceUsedPercent(d.Name));
}
// Setup monitoring data structures.
string id = d.Name;
// Since these live across iterations, do not duplicate them in the containing list.
// Disk space %.
if (this.DiskSpaceUsagePercentageData.All(data => data.Id != id) && (this.DiskSpacePercentErrorThreshold > 0 || this.DiskSpacePercentWarningThreshold > 0))
{
this.DiskSpaceUsagePercentageData.Add(new FabricResourceUsageData <double>(ErrorWarningProperty.DiskSpaceUsagePercentage, id, DataCapacity));
}
// Current disk queue length.
if (this.DiskAverageQueueLengthData.All(data => data.Id != id) && (this.AverageQueueLengthErrorThreshold > 0 || this.AverageQueueLengthWarningThreshold > 0))
{
this.DiskAverageQueueLengthData.Add(new FabricResourceUsageData <float>(ErrorWarningProperty.DiskAverageQueueLength, id, DataCapacity));
}
// This data is just used for Telemetry today.
if (this.DiskSpaceAvailableMbData.All(data => data.Id != id))
{
this.DiskSpaceAvailableMbData.Add(new FabricResourceUsageData <double>(ErrorWarningProperty.DiskSpaceAvailableMb, id, DataCapacity));
}
// This data is just used for Telemetry today.
if (this.DiskSpaceTotalMbData.All(data => data.Id != id))
{
this.DiskSpaceTotalMbData.Add(new FabricResourceUsageData <double>(ErrorWarningProperty.DiskSpaceTotalMb, id, DataCapacity));
}
// It is important to check if code is running on Windows, since d.Name.Substring(0, 2) will fail on Linux for / (root) mount point.
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
if (this.AverageQueueLengthErrorThreshold > 0 || this.AverageQueueLengthWarningThreshold > 0)
{
// Warm up counter.
_ = DiskUsage.GetAverageDiskQueueLength(d.Name.Substring(0, 2));
this.DiskAverageQueueLengthData.Single(x => x.Id == id).Data.Add(DiskUsage.GetAverageDiskQueueLength(d.Name.Substring(0, 2)));
}
}
if (this.DiskSpacePercentErrorThreshold > 0 || this.DiskSpacePercentWarningThreshold > 0)
{
this.DiskSpaceUsagePercentageData.Single(x => x.Id == id).Data.Add(DiskUsage.GetCurrentDiskSpaceUsedPercent(id));
}
this.DiskSpaceAvailableMbData.Single(x => x.Id == id).Data.Add(DiskUsage.GetAvailableDiskSpace(id, SizeUnit.Megabytes));
this.DiskSpaceTotalMbData.Single(x => x.Id == id).Data.Add(DiskUsage.GetTotalDiskSpace(id, SizeUnit.Megabytes));
// This section only needs to run if you have the FabricObserverWebApi app installed.
if (ObserverManager.ObserverWebAppDeployed && RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
_ = this.diskInfo.AppendFormat(
"{0}",
GetWindowsPerfCounterDetailsText(
this.DiskAverageQueueLengthData.FirstOrDefault(
x => x.Id == d.Name.Substring(0, 1))
?.Data,
"Avg. Disk Queue Length"));
}
RunDuration = this.stopWatch.Elapsed;
}
await ReportAsync(token).ConfigureAwait(true);
LastRunDateTime = DateTime.Now;
}