public void EscapesCommasInKeys()
{
var target = new byte[9];
var tags = new Dictionary <string, string> {
["f,o"] = "abc"
};
ActivityWriter.TryWriteTags(target.AsSpan(), tags, out int written);
Assert.Equal(9, written);
Assert.Equal(@",f\,o=abc", Encoding.UTF8.GetString(target));
}
public void WritesTwoKeyValuePairs()
{
var target = new byte[16];
var tags = new Dictionary <string, string> {
["foo"] = "bar", ["wib"] = "qux"
};
ActivityWriter.TryWriteTags(target.AsSpan(), tags, out int written);
Assert.Equal(16, written);
Assert.Equal(",foo=bar,wib=qux", Encoding.UTF8.GetString(target));
}
public void EscapesEqualSignsInValues()
{
var target = new byte[9];
var tags = new Dictionary <string, string> {
["foo"] = "a=b"
};
ActivityWriter.TryWriteTags(target.AsSpan(), tags, out int written);
Assert.Equal(9, written);
Assert.Equal(@",foo=a\=b", Encoding.UTF8.GetString(target));
}
public void WritesSimpleKeyValuePair()
{
var target = new byte[8];
var tags = new Dictionary <string, string> {
["foo"] = "bar"
};
ActivityWriter.TryWriteTags(target.AsSpan(), tags, out int written);
Assert.Equal(8, written);
Assert.Equal(",foo=bar", Encoding.UTF8.GetString(target));
}
public bool Write(object?args, Activity?activity, Span <byte> span, out int bytesWritten)
{
if (span.Length == 0)
{
goto fail;
}
bytesWritten = 0;
for (int i = 0; i < _tagCount; i++)
{
if (span.Length == 0)
{
goto fail;
}
if (!_tagFormatters[i].TryWrite(args !, span, true, out int tagWritten))
{
goto fail;
}
span = span.Slice(tagWritten);
bytesWritten += tagWritten;
}
if (activity != null)
{
if (!ActivityWriter.TryWriteTags(span, activity.Tags, out int tagsWritten))
{
goto fail;
}
bytesWritten += tagsWritten;
}
span[0] = Space;
span = span.Slice(1);
bytesWritten++;
bool comma = false;
for (int i = 0; i < _fieldCount; i++)
{
if (span.Length == 0)
{
goto fail;
}
if (!_fieldFormatters[i].TryWrite(args !, span, comma, out int fieldWritten))
{
goto fail;
}
span = span.Slice(fieldWritten);
bytesWritten += fieldWritten;
comma = comma || fieldWritten > 0;
}
if (activity != null && activity.Duration.Ticks > 0L)
{
if (!ActivityWriter.TryWriteDuration(span, activity.Duration, comma, out int durationWritten))
{
goto fail;
}
bytesWritten += durationWritten;
}
return(true);
fail:
bytesWritten = 0;
return(false);
}
