private void StartStream(object args)
{
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
using (HistorianClient client = new HistorianClient("127.0.0.1", 54996))
using (ClientDatabaseBase<HistorianKey, HistorianValue> database = client.GetDatabase<HistorianKey, HistorianValue>(string.Empty))
{
using (SortedTreeTable<HistorianKey, HistorianValue> file = SortedTreeFile.OpenFile(@"H:\OGE 2009.d2", isReadOnly: true).OpenOrCreateTable<HistorianKey, HistorianValue>(EncodingDefinition.FixedSizeCombinedEncoding))
{
using (SortedTreeTableReadSnapshot<HistorianKey, HistorianValue> read = file.BeginRead())
{
SortedTreeScannerBase<HistorianKey, HistorianValue> scan = read.GetTreeScanner();
scan.SeekToStart();
long count = 0;
while (scan.Read(key, value))
{
count++;
database.Write(key, value);
if ((count % 10) == 1)
Thread.Sleep(1);
}
}
}
}
}
public SnapDBClient(string hostAddress, int port, string instanceName, ulong startTime, ulong endTime, int frameRate, IEnumerable<ulong> pointIDs)
{
m_client = new HistorianClient(hostAddress, port);
m_database = m_client.GetDatabase<HistorianKey, HistorianValue>(instanceName);
m_key = new HistorianKey();
m_value = new HistorianValue();
SeekFilterBase<HistorianKey> timeFilter = TimestampSeekFilter.CreateFromRange<HistorianKey>(DataPoint.RoundTimestamp(startTime, frameRate), DataPoint.RoundTimestamp(endTime, frameRate));
MatchFilterBase<HistorianKey, HistorianValue> pointFilter = PointIdMatchFilter.CreateFromList<HistorianKey, HistorianValue>(pointIDs);
m_stream = m_database.Read(SortedTreeEngineReaderOptions.Default, timeFilter, pointFilter);
}
public void TestReadData()
{
var config1 = new HistorianServerDatabaseConfig("Scada", @"c:\temp\Scada\", true);
var config2 = new HistorianServerDatabaseConfig("Synchrophasor", @"c:\temp\Synchrophasor\", true);
using (HistorianServer server = new HistorianServer(12345))
{
server.AddDatabase(config1);
server.AddDatabase(config2);
using (var client = new HistorianClient("127.0.0.1", 12345))
{
var database = client.GetDatabase<HistorianKey, HistorianValue>("Scada");
TreeStream<HistorianKey, HistorianValue> stream = database.Read(0, 100);
stream.Dispose();
database.Dispose();
database = client.GetDatabase<HistorianKey, HistorianValue>("Synchrophasor");
stream = database.Read(0, 100);
stream.Dispose();
database.Dispose();
}
}
}
public void TestReadData()
{
var key = new HistorianKey();
var value = new HistorianValue();
var settings = new HistorianServerDatabaseConfig("DB", @"c:\temp\Scada\", true);
using (HistorianServer server = new HistorianServer(settings, 12345))
{
using (var client = new HistorianClient("127.0.0.1", 12345))
using (var database = client.GetDatabase<HistorianKey, HistorianValue>("DB"))
{
var stream = database.Read(0, 1000);
while (stream.Read(key, value))
Console.WriteLine(key.Timestamp);
}
}
}
public static void ReadAllPoints()
{
Stopwatch sw = new Stopwatch();
int pointCount = 0;
var settings = new HistorianServerDatabaseConfig("PPA", @"C:\Program Files\openHistorian\Archive\", true);
using (HistorianServer server = new HistorianServer(settings))
{
DateTime start = DateTime.FromBinary(Convert.ToDateTime("2/1/2014").Date.Ticks + Convert.ToDateTime("6:00:00PM").TimeOfDay.Ticks).ToUniversalTime();
using (var client = new HistorianClient("127.0.0.1", 12345))
using (var database = client.GetDatabase<HistorianKey, HistorianValue>(String.Empty))
{
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
sw.Start();
var scan = database.Read((ulong)start.Ticks, ulong.MaxValue);
while (scan.Read(key, value) && pointCount < 10000000)
pointCount++;
sw.Stop();
//sw.Start();
//using (var frameReader = database.GetPointStream(DateTime.MinValue, DateTime.MaxValue))
//{
// while (frameReader.Read())
// ;
//}
//sw.Stop();
}
}
Console.WriteLine(pointCount);
Console.WriteLine(sw.Elapsed.TotalSeconds.ToString());
Console.WriteLine((pointCount / sw.Elapsed.TotalSeconds / 1000000).ToString());
}
public void CreateScadaDatabase()
{
Array.ForEach(Directory.GetFiles(@"c:\temp\Scada\", "*.d2", SearchOption.AllDirectories), File.Delete);
var key = new HistorianKey();
var value = new HistorianValue();
var settings = new HistorianServerDatabaseConfig("DB", @"c:\temp\Scada\", true);
using (var server = new HistorianServer(settings, 12345))
{
using (var client = new HistorianClient("127.0.0.1", 12345))
using (var database = client.GetDatabase<HistorianKey, HistorianValue>("DB"))
{
for (ulong x = 0; x < 1000; x++)
{
key.Timestamp = x;
database.Write(key, value);
}
database.HardCommit();
System.Threading.Thread.Sleep(1200);
}
}
}
public static IEnumerable GetHistorianDataSampled(SqlString historianServer, SqlString instanceName, DateTime startTime, DateTime stopTime, TimeSpan interval, [SqlFacet(MaxSize = -1)] SqlString measurementIDs)
{
const int DefaultHistorianPort = 38402;
if (historianServer.IsNull || string.IsNullOrEmpty(historianServer.Value))
throw new ArgumentNullException("historianServer", "Missing historian server parameter");
if (instanceName.IsNull || string.IsNullOrEmpty(instanceName.Value))
throw new ArgumentNullException("instanceName", "Missing historian instance name parameter");
if (startTime > stopTime)
throw new ArgumentException("Invalid time range specified", "startTime");
string[] parts = historianServer.Value.Split(':');
string hostName = parts[0];
int port;
if (parts.Length < 2 || !int.TryParse(parts[1], out port))
port = DefaultHistorianPort;
using (HistorianClient client = new HistorianClient(hostName, port))
using (ClientDatabaseBase<HistorianKey, HistorianValue> reader = client.GetDatabase<HistorianKey, HistorianValue>(instanceName.Value))
{
var timeFilter = interval.Ticks == 0 ? TimestampSeekFilter.CreateFromRange<HistorianKey>(startTime, stopTime) :
TimestampSeekFilter.CreateFromIntervalData<HistorianKey>(startTime, stopTime, interval, new TimeSpan(TimeSpan.TicksPerMillisecond));
MatchFilterBase<HistorianKey, HistorianValue> pointFilter = null;
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
if (!measurementIDs.IsNull && !string.IsNullOrEmpty(measurementIDs.Value))
pointFilter = PointIdMatchFilter.CreateFromList<HistorianKey, HistorianValue>(measurementIDs.Value.Split(',').Select(ulong.Parse));
// Start stream reader for the provided time window and selected points
using (TreeStream<HistorianKey, HistorianValue> stream = reader.Read(SortedTreeEngineReaderOptions.Default, timeFilter, pointFilter))
{
while (stream.Read(key, value))
yield return new Measurement(key.PointID, key.TimestampAsDate, value.AsSingle);
}
}
}
void ReaderThread()
{
int threadId = Interlocked.Increment(ref ThreadNumber);
try
{
DateTime start = DateTime.FromBinary(Convert.ToDateTime("2/1/2014").Date.Ticks + Convert.ToDateTime("6:00:00PM").TimeOfDay.Ticks).ToUniversalTime();
while (!StopReading)
{
int myId = Interlocked.Increment(ref ReaderNumber);
Stopwatch sw = new Stopwatch();
int pointCount = 0;
using (var client = new HistorianClient("127.0.0.1", 12345))
using (var database = client.GetDatabase<HistorianKey, HistorianValue>(String.Empty))
{
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
sw.Start();
var scan = database.Read((ulong)start.Ticks, ulong.MaxValue);//, new ulong[] { 65, 953, 5562 });
while (scan.Read(key, value) && pointCount < PointsToRead)
pointCount++;
sw.Stop();
}
//Console.WriteLine("Thread: " + threadId.ToString() + " " + "Run Number: " + myId.ToString() + " " + (pointCount / sw.Elapsed.TotalSeconds / 1000000).ToString());
}
}
catch (Exception ex)
{
//Console.WriteLine(ex.ToString());
}
Console.WriteLine("Thread: " + threadId.ToString() + " Quit");
}
private void OpenArchives()
{
ClearArchives();
ArchiveIsOpen = true;
m_metadata = Metadata.Query().Select(row => new MetadataWrapper(row)).ToList();
FilterBySearchResults();
m_client = new HistorianClient(ConnectionDialog.ServerHost.Text, int.Parse(ConnectionDialog.HistorianPort.Text));
m_chartWindow.ArchiveReader = m_client.GetDatabase<HistorianKey, HistorianValue>(ConnectionDialog.InstanceName.Text);
TrySetChartInterval(null);
m_chartWindow.UpdateChart();
}
public void TestReadData()
{
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
var settings = new HistorianServerDatabaseConfig("PPA", @"c:\temp\Scada\", true);
using (HistorianServer server = new HistorianServer(settings))
{
double count = 0;
DebugStopwatch sw = new DebugStopwatch();
double time = sw.TimeEvent(() =>
{
count = 0;
using (HistorianClient client = new HistorianClient("127.0.0.1", 12345))
using (ClientDatabaseBase<HistorianKey, HistorianValue> database = client.GetDatabase<HistorianKey, HistorianValue>(String.Empty))
{
//IHistorianDatabase<HistorianKey, HistorianValue> database = server.GetDefaultDatabase();//.GetDatabase();
//TreeStream<HistorianKey, HistorianValue> stream = reader.Read(0, ulong.MaxValue, new ulong[] { 2 });
TreeStream<HistorianKey, HistorianValue> stream = database.Read(0, ulong.MaxValue);
while (stream.Read(key,value))
{
count++;
}
}
});
Console.WriteLine((count / 1000000 / time).ToString() + " Million PPS");
}
//Console.WriteLine("KeyMethodsBase calls");
//for (int x = 0; x < 23; x++)
//{
// Console.WriteLine(TreeKeyMethodsBase<HistorianKey>.CallMethods[x] + "\t" + ((TreeKeyMethodsBase<HistorianKey>.Method)(x)).ToString());
//}
//Console.WriteLine("ValueMethodsBase calls");
//for (int x = 0; x < 5; x++)
//{
// Console.WriteLine(TreeValueMethodsBase<HistorianValue>.CallMethods[x] + "\t" + ((TreeValueMethodsBase<HistorianValue>.Method)(x)).ToString());
//}
//for (int x = 0; x < 15; x++)
//{
// Console.WriteLine(BinaryStreamBase.CallMethods[x] + "\t" + ((BinaryStreamBase.Method)(x)).ToString());
//}
}
//private void BtnExport_Click(object sender, EventArgs e)
//{
// Settings.Default.Save();
// if (m_meta == null)
// {
// MessageBox.Show("Please download the metadata first.");
// return;
// }
// if (m_selectedMeasurements == null || m_selectedMeasurements.Count == 0)
// {
// MessageBox.Show("There are no measurements to extract");
// return;
// }
// DateTime startTime = dateStartTime.Value;
// DateTime stopTime = dateStopTime.Value;
// if (startTime > stopTime)
// {
// MessageBox.Show("Start and Stop times are invalid");
// return;
// }
// TimeSpan interval = Resolutions.GetInterval((string)cmbResolution.SelectedItem);
// HistorianClientOptions clientOptions = new HistorianClientOptions();
// clientOptions.DefaultDatabase = Settings.Default.HistorianInstanceName;
// clientOptions.NetworkPort = Settings.Default.HistorianStreamingPort;
// clientOptions.ServerNameOrIp = Settings.Default.ServerIP;
// using (HistorianClient client = new HistorianClient(clientOptions))
// {
// KeySeekFilterBase<HistorianKey> timeFilter;
// if (interval.Ticks != 0)
// timeFilter = TimestampFilter.CreateFromIntervalData<HistorianKey>(startTime, stopTime, interval, new TimeSpan(TimeSpan.TicksPerMillisecond));
// else
// timeFilter = TimestampFilter.CreateFromRange<HistorianKey>(startTime, stopTime);
// var points = m_selectedMeasurements.Select((x) => (ulong)x.PointID).ToArray();
// var pointFilter = PointIDFilter.CreateFromList<HistorianKey>(points);
// var database = client.GetDefaultDatabase();
// var frames = database.GetFrames(timeFilter, pointFilter).RoundToTolerance(1);
// using (var csvStream = new StreamWriter("C:\\temp\\file.csv"))
// {
// //csvStream.AutoFlush = false;
// csvStream.Write("Timestamp,");
// foreach (var signal in m_selectedMeasurements)
// {
// csvStream.Write(signal.Description);
// csvStream.Write(',');
// }
// csvStream.WriteLine();
// foreach (var frame in frames)
// {
// csvStream.Write(frame.Key.ToString("MM/dd/yyyy hh:mm:ss.fffffff"));
// csvStream.Write(',');
// foreach (var signal in m_selectedMeasurements)
// {
// HistorianValueStruct value;
// if (frame.Value.Points.TryGetValue((ulong)signal.PointID, out value))
// {
// csvStream.Write(value.AsSingle);
// }
// csvStream.Write(',');
// }
// csvStream.WriteLine();
// }
// csvStream.Flush();
// }
// database.Disconnect();
// }
//}
//private void BtnExport_Click(object sender, EventArgs e)
//{
// Settings.Default.Save();
// if (m_meta == null)
// {
// MessageBox.Show("Please download the metadata first.");
// return;
// }
// if (m_selectedMeasurements == null || m_selectedMeasurements.Count == 0)
// {
// MessageBox.Show("There are no measurements to extract");
// return;
// }
// DateTime startTime = dateStartTime.Value;
// DateTime stopTime = dateStopTime.Value;
// if (startTime > stopTime)
// {
// MessageBox.Show("Start and Stop times are invalid");
// return;
// }
// TimeSpan interval = Resolutions.GetInterval((string)cmbResolution.SelectedItem);
// HistorianClientOptions clientOptions = new HistorianClientOptions();
// clientOptions.DefaultDatabase = Settings.Default.HistorianInstanceName;
// clientOptions.NetworkPort = Settings.Default.HistorianStreamingPort;
// clientOptions.ServerNameOrIp = Settings.Default.ServerIP;
// using (HistorianClient client = new HistorianClient(clientOptions))
// {
// KeySeekFilterBase<HistorianKey> timeFilter;
// if (interval.Ticks != 0)
// timeFilter = TimestampFilter.CreateFromIntervalData<HistorianKey>(startTime, stopTime, interval, new TimeSpan(TimeSpan.TicksPerMillisecond));
// else
// timeFilter = TimestampFilter.CreateFromRange<HistorianKey>(startTime, stopTime);
// var points = m_selectedMeasurements.Select((x) => (ulong)x.PointID).ToArray();
// var pointFilter = PointIDFilter.CreateFromList<HistorianKey>(points);
// var database = client.GetDefaultDatabase();
// using (var frameReader = database.GetPointStream(timeFilter, pointFilter).GetFrameReader())
// using (var csvStream = new StreamWriter("C:\\temp\\file.csv"))
// {
// var ultraStream = new UltraStreamWriter(csvStream);
// //csvStream.AutoFlush = false;
// csvStream.Write("Timestamp,");
// foreach (var signal in m_selectedMeasurements)
// {
// csvStream.Write(signal.Description);
// csvStream.Write(',');
// }
// csvStream.WriteLine();
// while (frameReader.Read())
// {
// csvStream.Write(frameReader.FrameTime.ToString("MM/dd/yyyy hh:mm:ss.fffffff"));
// csvStream.Write(',');
// foreach (var signal in m_selectedMeasurements)
// {
// HistorianValueStruct value;
// if (frameReader.Frame.TryGetValue((ulong)signal.PointID, out value))
// {
// ultraStream.Write(value.AsSingle);
// //csvStream.Write(value.AsSingle);
// }
// //csvStream.Write(',');
// ultraStream.Write(',');
// }
// ultraStream.Flush();
// csvStream.WriteLine();
// }
// csvStream.Flush();
// }
// database.Disconnect();
// }
//}
//private void BtnExport_Click(object sender, EventArgs e)
//{
// Settings.Default.Save();
// if (m_meta == null)
// {
// MessageBox.Show("Please download the metadata first.");
// return;
// }
// if (m_selectedMeasurements == null || m_selectedMeasurements.Count == 0)
// {
// MessageBox.Show("There are no measurements to extract");
// return;
// }
// DateTime startTime = dateStartTime.Value;
// DateTime stopTime = dateStopTime.Value;
// if (startTime > stopTime)
// {
// MessageBox.Show("Start and Stop times are invalid");
// return;
// }
// TimeSpan interval = Resolutions.GetInterval((string)cmbResolution.SelectedItem);
// HistorianClientOptions clientOptions = new HistorianClientOptions();
// clientOptions.DefaultDatabase = Settings.Default.HistorianInstanceName;
// clientOptions.NetworkPort = Settings.Default.HistorianStreamingPort;
// clientOptions.ServerNameOrIp = Settings.Default.ServerIP;
// using (HistorianClient client = new HistorianClient(clientOptions))
// {
// m_readIndex = 0;
// m_fillMeasurements.Clear();
// m_measurementsInOrder.Clear();
// foreach (var signal in m_selectedMeasurements)
// {
// var m = new Measurements();
// m_fillMeasurements.Add((ulong)signal.PointID, m);
// m_measurementsInOrder.Add(m);
// }
// KeySeekFilterBase<HistorianKey> timeFilter;
// if (interval.Ticks != 0)
// timeFilter = TimestampFilter.CreateFromIntervalData<HistorianKey>(startTime, stopTime, interval, new TimeSpan(TimeSpan.TicksPerMillisecond));
// else
// timeFilter = TimestampFilter.CreateFromRange<HistorianKey>(startTime, stopTime);
// var points = m_selectedMeasurements.Select((x) => (ulong)x.PointID).ToArray();
// var pointFilter = PointIDFilter.CreateFromList<HistorianKey>(points);
// var database = client.GetDefaultDatabase();
// using (var fillAdapter = database.GetPointStream(timeFilter, pointFilter).GetFillAdapter())
// using (var csvStream = new StreamWriter("C:\\temp\\file.csv"))
// {
// var ultraStream = new UltraStreamWriter(csvStream);
// //csvStream.AutoFlush = false;
// csvStream.Write("Timestamp,");
// foreach (var signal in m_selectedMeasurements)
// {
// csvStream.Write(signal.Description);
// csvStream.Write(',');
// }
// csvStream.WriteLine();
// m_readIndex++;
// while (fillAdapter.Fill(FillData))
// {
// csvStream.Write(fillAdapter.FrameTime.ToString("MM/dd/yyyy hh:mm:ss.fffffff"));
// csvStream.Write(',');
// foreach (var signal in m_measurementsInOrder)
// {
// if (signal.ReadNumber == m_readIndex)
// {
// ultraStream.Write(signal.Value);
// }
// ultraStream.Write(',');
// }
// ultraStream.Flush();
// csvStream.WriteLine();
// m_readIndex++;
// }
// csvStream.Flush();
// }
// database.Disconnect();
// }
//}
private void BtnExport_Click(object sender, EventArgs e)
{
Settings.Default.Save();
if (m_meta == null)
{
MessageBox.Show("Please download the metadata first.");
return;
}
if (m_selectedMeasurements == null || m_selectedMeasurements.Count == 0)
{
MessageBox.Show("There are no measurements to extract");
return;
}
DateTime startTime = dateStartTime.Value;
DateTime stopTime = dateStopTime.Value;
if (startTime > stopTime)
{
MessageBox.Show("Start and Stop times are invalid");
return;
}
BtnExport.Tag = BtnExport.Text;
BtnExport.Text = "Exporting...";
BtnExport.Enabled = false;
Cursor.Current = Cursors.WaitCursor;
Application.DoEvents();
TimeSpan interval = Resolutions.GetInterval((string)cmbResolution.SelectedItem);
Thread workerThread = new Thread(start =>
{
long processingStartTime = DateTime.UtcNow.Ticks;
using (HistorianClient client = new HistorianClient(TxtServerIP.Text,int.Parse(TxtHistorianPort.Text)))
{
m_readIndex = 0;
m_fillMeasurements.Clear();
m_measurementsInOrder.Clear();
foreach (var signal in m_selectedMeasurements)
{
var m = new Measurements();
m_fillMeasurements.Add((ulong)signal.PointID, m);
m_measurementsInOrder.Add(m);
}
SeekFilterBase<HistorianKey> timeFilter;
if (interval.Ticks != 0)
timeFilter = TimestampSeekFilter.CreateFromIntervalData<HistorianKey>(startTime, stopTime, interval, new TimeSpan(TimeSpan.TicksPerMillisecond));
else
timeFilter = TimestampSeekFilter.CreateFromRange<HistorianKey>(startTime, stopTime);
var points = m_selectedMeasurements.Select((x) => (ulong)x.PointID).ToArray();
var pointFilter = PointIdMatchFilter.CreateFromList<HistorianKey, HistorianValue>(points);
using (var database = client.GetDatabase<HistorianKey, HistorianValue>(TxtHistorianInstance.Text))
{
string fileName = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), "Export.csv");
using (var fillAdapter = database.GetPointStream(timeFilter, pointFilter).GetFillAdapter())
using (var csvStream = new StreamWriter(fileName))
{
var ultraStream = new UltraStreamWriter(csvStream);
//csvStream.AutoFlush = false;
csvStream.Write("Timestamp,");
foreach (var signal in m_selectedMeasurements)
{
csvStream.Write(signal.Description);
csvStream.Write(',');
}
csvStream.WriteLine();
m_readIndex++;
while (fillAdapter.Fill(FillData))
{
csvStream.Write(fillAdapter.FrameTime.ToString("MM/dd/yyyy hh:mm:ss.fffffff"));
csvStream.Write(',');
foreach (var signal in m_measurementsInOrder)
{
if (signal.ReadNumber == m_readIndex)
{
ultraStream.Write(signal.Value);
}
ultraStream.Write(',');
}
ultraStream.Flush();
csvStream.WriteLine();
m_readIndex++;
}
csvStream.Flush();
}
}
}
Ticks runtime = DateTime.UtcNow.Ticks - processingStartTime;
BeginInvoke(new Action<Ticks>(r => MessageBox.Show(r.ToElapsedTimeString(2), "Processing Time", MessageBoxButtons.OK, MessageBoxIcon.Information)), runtime);
BeginInvoke(new Action(RestoreExportButton));
});
workerThread.Start();
}
public static void TestReadPoints2()
{
int pointCount = 0;
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
var settings = new HistorianServerDatabaseConfig("PPA", @"C:\Program Files\openHistorian\Archive\", true);
using (HistorianServer server = new HistorianServer(settings))
{
Stopwatch sw = new Stopwatch();
sw.Start();
using (var client = new HistorianClient("127.0.0.1", 12345))
using (var database = client.GetDatabase<HistorianKey, HistorianValue>(String.Empty))
{
var stream = database.Read(0, (ulong)DateTime.MaxValue.Ticks, new ulong[] { 65, 953, 5562 });
while (stream.Read(key, value))
pointCount++;
}
sw.Stop();
//MessageBox.Show(sw.Elapsed.TotalSeconds.ToString());
}
}
private void OpenArchives()
{
ArchiveIsOpen = true;
List<Metadata> measurements = new List<Metadata>();
string connectionString = "server=" + serverHost + ":" + GEPPort + "; interface=0.0.0.0";
DataSet metadata = MetadataRetriever.GetMetadata(connectionString, 30000);
// Reference meta-data tables
DataTable measurementTable = metadata.Tables["MeasurementDetail"];
foreach (DataRow measurement in measurementTable.Select("SignalAcronym <> 'STAT' and SignalAcronym <> 'DIGI'"))
{
measurements.Add(new Metadata(measurement));
}
m_client = new HistorianClient(serverHost, int.Parse(historianPort));
ArchiveReader = m_client.GetDatabase<HistorianKey, HistorianValue>(instanceName);
StreamWriter sw = new StreamWriter("measurementList.txt");
sw.WriteLine("Last opened at {0}", DateTime.Now);
sw.WriteLine("Historian Instance: {0}, Port: {1}\n", instanceName, historianPort);
foreach (var item in measurements)
{
sw.WriteLine("PointID: {0}, SignalReference: {1}, Description: {2}", item.PointID, item.SignalReference, item.Description);
}
sw.Close();
}