public GSFHistorianStream(MigrationUtility parent, string sourceFileName, string instanceName, StreamWriter duplicateDataOutput = null)
{
m_file = OpenArchiveFile(sourceFileName, ref instanceName);
m_instanceName = instanceName;
m_duplicateDataOutput = duplicateDataOutput;
// Find maximum point ID
int maxPointID = FindMaximumPointID(m_file.MetadataFile);
// Create new time-sorted data point scanner to read points in this file in sorted order
TimeSortedArchiveFileScanner scanner = new TimeSortedArchiveFileScanner();
// Get start and end times from file data and validate
TimeTag startTime, endTime;
startTime = m_file.Fat.FileStartTime;
if (startTime == TimeTag.MaxValue)
{
startTime = TimeTag.MinValue;
}
endTime = m_file.Fat.FileEndTime;
if (endTime == TimeTag.MinValue)
{
endTime = TimeTag.MaxValue;
}
scanner.FileAllocationTable = m_file.Fat;
scanner.HistorianIDs = Enumerable.Range(1, maxPointID);
scanner.StartTime = startTime;
scanner.EndTime = endTime;
scanner.ResumeFrom = null;
scanner.DataReadExceptionHandler = (sender, e) => parent.ShowUpdateMessage("[GSFHistorian] Exception encountered during data read: {0}", e.Argument.Message);
m_enumerator = scanner.Read().GetEnumerator();
m_value = new HistorianValue();
m_key = new HistorianKey();
m_lastKey = new HistorianKey();
}
public SnapDBEngine(MigrationUtility parent, string instanceName, string destinationFilesLocation, string targetFileSize, string directoryNamingMethod, bool readOnly = false)
{
m_parent = parent;
m_logSubscriber = Logger.CreateSubscriber(VerboseLevel.High);
m_logSubscriber.NewLogMessage += m_logSubscriber_Log;
if (string.IsNullOrEmpty(instanceName))
{
instanceName = "PPA";
}
else
{
instanceName = instanceName.Trim();
}
// Establish archive information for this historian instance
HistorianServerDatabaseConfig archiveInfo = new HistorianServerDatabaseConfig(instanceName, destinationFilesLocation, !readOnly);
double targetSize;
if (!double.TryParse(targetFileSize, out targetSize))
{
targetSize = 1.5D;
}
archiveInfo.TargetFileSize = (long)(targetSize * SI.Giga);
int methodIndex;
if (!int.TryParse(directoryNamingMethod, out methodIndex) || !Enum.IsDefined(typeof(ArchiveDirectoryMethod), methodIndex))
{
methodIndex = (int)ArchiveDirectoryMethod.YearThenMonth;
}
archiveInfo.DirectoryMethod = (ArchiveDirectoryMethod)methodIndex;
m_server = new HistorianServer(archiveInfo);
m_parent.ShowUpdateMessage("[SnapDB] Engine initialized");
}
