/// <summary>
/// Returns volumes based on a given name or index.
/// </summary>
/// <param name="nameOrIndex">Name or index of the volume to return.</param>
/// <returns>Either all volumes or a volume based on the given option</returns>
public List <Volume> GetVolumesForOption(string nameOrIndex = "all")
{
List <Volume> result = new List <Volume>();
if (nameOrIndex == Constants.AllVolumes)
{
result = Volumes;
}
else
{
Volume volume = null;
if (int.TryParse(nameOrIndex, out int index) == true)
{
volume = Volumes.Find(v => v.Index == index);
if (volume != null)
{
result.Add(volume);
}
}
else
{
volume = Volumes.Find(v => v.Name == nameOrIndex);
if (volume != null)
{
result.Add(volume);
}
}
}
return(result);
}
private async Task PollVolumePerformanceUtilizationAsync()
{
const string query = @"
SELECT Name,
Timestamp_Sys100NS,
DiskReadBytesPersec,
DiskWriteBytesPersec
FROM Win32_PerfRawData_PerfDisk_LogicalDisk";
var queryTime = DateTime.UtcNow.ToEpochTime();
var combinedUtil = new Volume.VolumePerformanceUtilization
{
DateEpoch = queryTime,
ReadAvgBps = 0,
WriteAvgBps = 0
};
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var perfData = new PerfRawData(this, data);
var name = perfData.Identifier;
var iface = Volumes.Find(i => name == GetCounterName(i.Name));
if (iface == null)
{
continue;
}
iface.ReadBps = (float)perfData.GetCalculatedValue("DiskReadBytesPersec", 10000000);
iface.WriteBps = (float)perfData.GetCalculatedValue("DiskWriteBytesPersec", 10000000);
var util = new Volume.VolumePerformanceUtilization
{
DateEpoch = queryTime,
ReadAvgBps = iface.ReadBps,
WriteAvgBps = iface.WriteBps
};
var netData = VolumePerformanceHistory.GetOrAdd(iface.Name, k => new List <Volume.VolumePerformanceUtilization>(1024));
UpdateHistoryStorage(netData, util);
//if (PrimaryInterfaces.Contains(iface))
{
combinedUtil.ReadAvgBps += util.ReadAvgBps;
combinedUtil.WriteAvgBps += util.WriteAvgBps;
}
}
}
UpdateHistoryStorage(CombinedVolumePerformanceHistory, combinedUtil);
}
internal List <Volume.VolumePerformanceUtilization> GetVolumePerformanceUtilizationHistory(Volume iface)
{
if (iface != null &&
Volumes.Find(x => x == iface) != null &&
VolumePerformanceHistory.ContainsKey(iface.Name))
{
return(VolumePerformanceHistory[iface.Name]);
}
else
{
return(new List <Volume.VolumePerformanceUtilization>(0));
}
}
private async Task GetAllVolumesAsync()
{
const string query = @"
SELECT Caption,
DeviceID,
Description,
FreeSpace,
Name,
Size,
VolumeSerialNumber
FROM Win32_LogicalDisk
WHERE DriveType = 3"; //fixed disks
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var disk in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var id = $"{disk.DeviceID}";
var v = Volumes.Find(x => x.Id == id) ?? new Volume();
v.Id = $"{disk.DeviceID}";
v.Available = disk.FreeSpace;
v.Caption = disk.VolumeSerialNumber;
v.Description = disk.Name + " - " + disk.Description;
v.Name = disk.Name;
v.NodeId = Id;
v.Size = disk.Size;
v.Type = "Fixed Disk";
v.Status = NodeStatus.Active;
v.Used = v.Size - v.Available;
if (v.Size > 0)
{
v.PercentUsed = 100 * v.Used / v.Size;
}
if (v.Node == null)
{
v.Node = this;
Volumes.Add(v);
}
}
}
}