static (IDictionary <string, object>, string) ExtractValues(string pattern, string candidate)
{
var parsed = ExtractionPatternParser.Parse(pattern);
var extractor = ExtractionPatternInterpreter.CreateNameValueExtractor(parsed);
return(extractor.ExtractValues(candidate));
}
public void ARegularStringIsASingleTextLiteral()
{
var pattern = ExtractionPatternParser.Parse("Hello!");
Assert.Single(pattern.Elements);
var tt = Assert.IsType <LiteralTextPatternExpression>(pattern.Elements.Single());
Assert.Equal("Hello!", tt.Text);
}
public void CaptureNameAndTypeAreParsed()
{
var pattern = ExtractionPatternParser.Parse("{abc:def}");
Assert.Single(pattern.Elements);
var ct = Assert.IsType <CapturePatternExpression>(pattern.Elements.Single());
Assert.Equal("abc", ct.Name);
Assert.Equal("def", ((MatchTypeContentExpression)ct.Content).Type);
}
public void OnlyValidPatternsAreAccepted(string attempt, bool isValid)
{
if (isValid)
{
ExtractionPatternParser.Parse(attempt);
}
else
{
Assert.Throws <ParseException>(() => ExtractionPatternParser.Parse(attempt));
}
}
public void TheTrailingIndentPatternDoesNotMatchLinesStartingWithWhitespace()
{
var multilineMessageExtractor =
ExtractionPatternInterpreter.CreateNameValueExtractor(
ExtractionPatternParser.Parse("{@m:trailingindent}"));
var frame = " world";
var(properties, remainder) = multilineMessageExtractor.ExtractValues(frame);
Assert.Empty(properties);
Assert.Equal(frame, remainder);
}
public void TheTrailingIndentPatternMatchesMultilineMessages()
{
var multilineMessageExtractor =
ExtractionPatternInterpreter.CreateNameValueExtractor(
ExtractionPatternParser.Parse("{@m:trailingindent}"));
var frame = $"Hello,{Environment.NewLine} world!";
var(properties, remainder) = multilineMessageExtractor.ExtractValues(frame);
Assert.Null(remainder);
Assert.Single(properties, p => p.Key == ReifiedProperties.Message &&
((TextSpan)p.Value).ToStringValue() == frame);
}
public PlainTextLogEventReader(TextReader input, string extractionPattern)
{
if (extractionPattern == null)
{
throw new ArgumentNullException(nameof(extractionPattern));
}
_nameValueExtractor = ExtractionPatternInterpreter.CreateNameValueExtractor(ExtractionPatternParser.Parse(extractionPattern));
_reader = new FrameReader(input, SpanEx.MatchedBy(_nameValueExtractor.StartMarker), TrailingLineArrivalDeadline);
}
