/// <summary>
/// Converts the input <see cref="SarUsageEvent"/> instance to a <see cref="SarEvaluationUsageEvent"/>
/// </summary>
private static SarEvaluationUsageEvent ToEvaluationUsageEvent(SarUsageEvent usageEvent)
{
return(new SarEvaluationUsageEvent
{
UserId = usageEvent.UserId.ToString(),
ItemId = usageEvent.ItemId.ToString()
});
}
/// <summary>
/// Parse a usage events file into usage events items.
/// Expected format is userId,itemId,timestamp[,event-type[,event-weight]
/// </summary>
private IEnumerable <SarUsageEvent> ParseUsageEventsFile(string usageFile, FileParsingReport parsingReport, DateTime defaultEventTimestamp)
{
using (var reader = new TextFieldParser(usageFile)
{
Delimiters = new[] { "," }
})
{
while (!reader.EndOfData)
{
string[] fields;
parsingReport.TotalLinesCount++;
try
{
fields = reader.ReadFields();
}
catch (MalformedLineException ex)
{
if (ShouldContinueAfterError(ParsingErrorReason.MalformedLine,
parsingReport, usageFile, ex.LineNumber))
{
continue;
}
yield break;
}
ParsingErrorReason?parsingError;
ParsingErrorReason?parsingWarning;
SarUsageEvent usageEvent = ParseUsageEvent(fields, defaultEventTimestamp, out parsingError, out parsingWarning);
if (parsingError.HasValue)
{
if (ShouldContinueAfterError(parsingError.Value,
parsingReport, usageFile, reader.LineNumber - 1))
{
continue;
}
yield break;
}
if (parsingWarning.HasValue)
{
parsingReport.Warnings.Add(new ParsingError(Path.GetFileName(usageFile), reader.LineNumber - 1,
parsingWarning.Value));
continue;
}
parsingReport.SuccessfulLinesCount++;
yield return(usageEvent);
}
}
}
private SarUsageEvent ConvertToSarUsageEvent(IUsageEvent usageEvent)
{
var sarUsageEvent = new SarUsageEvent();
uint itemId;
if (_itemIdReverseLookup.TryGetValue(usageEvent.ItemId.ToLowerInvariant(), out itemId))
{
sarUsageEvent.ItemId = itemId;
}
if (_properties.EnableUserAffinity)
{
sarUsageEvent.Timestamp = usageEvent.Timestamp ?? DateTime.UtcNow;
sarUsageEvent.Weight = usageEvent.EventType?.GetEventWeight() ?? 1;
// If weight is provided overwrite the value.
sarUsageEvent.Weight = usageEvent.Weight ?? sarUsageEvent.Weight;
}
return(sarUsageEvent);
}
