/// <summary>
/// Run the history import, one chunk at a time if necessary
/// </summary>
private void RunHistoryImport()
{
using (ETCMDataContext context = new ETCMDataContext())
{
DateTime? lastImport = null;
DateTime now, historyStart, historyEnd;
do
{
now = DateTime.Now;
// Get the last import time
ETCMProperty lastImportProp = (from e in context.ETCMProperties
where e.PropertyName == LAST_IMPORT_PROPERTY
select e).SingleOrDefault();
if (lastImportProp != null)
lastImport = DateTime.Parse(lastImportProp.PropertyValue); ;
// Determine the start time of the history query
historyStart = lastImport ?? PTExporter.PT_CREATED_DATE;
// Determine the end time of the history query
historyEnd = now;
if (now - historyStart > PTExporter.MAX_HISTORY)
{
logger.Debug("The history from " + historyStart.ToString() + " to " + now + " is too long, limiting.");
historyEnd = historyStart.Add(PTExporter.MAX_HISTORY);
}
logger.Info("Importing history from timeframe (" + historyStart.ToString() + " - " + historyEnd.ToString() + ").");
// Run the export, and if there is history to export, import it
if (exporter.Run(historyStart, historyEnd))
importer.Run();
// Update the last import time
if (lastImportProp == null)
{
lastImportProp = new ETCMProperty();
context.ETCMProperties.InsertOnSubmit(lastImportProp);
}
lastImportProp.PropertyValue = historyEnd.ToString();
context.SubmitChanges();
} while (historyEnd < now);
}
}
/// <summary>
/// Import the given history changes into SQL.
/// </summary>
/// <param name="history"></param>
private void ImportHistory(DataTable history)
{
try
{
// Get a comma-delimited list of RPNs for log statement
List<string> prns = new List<string>();
foreach (DataRow row in history.Rows)
{
prns.Add(row["PRN"].ToString());
}
logger.Debug("Importing the following " + history.Rows.Count + " changed issues: " + string.Join(",", prns.ToArray()));
// Update and add issues
using (ETCMDataContext etcm = new ETCMDataContext())
{
Dictionary<int, Issue> newIssues = new Dictionary<int, Issue>();
// Loop through the changes
foreach (DataRow change in history.Rows)
{
int changedPRN = change.Field<int>("PRN");
Issue existingIssue = (from i in etcm.Issues
where i.PRN == changedPRN
select i).SingleOrDefault();
Issue issue = existingIssue;
if (existingIssue == null)
{
// This is a new issue, handle case of update(s) to new issue
if (!newIssues.TryGetValue(changedPRN, out issue))
{
issue = new Issue();
newIssues.Add(changedPRN, issue);
}
}
UpdateIssue(issue, change);
}
etcm.Issues.InsertAllOnSubmit(newIssues.Values);
etcm.SubmitChanges();
}
logger.Debug("Done importing changed issues");
}
catch (Exception e)
{
logger.Error("Error imported changes into ETCM database", e);
throw e;
}
}