static LogEvent ReadFromJObject(int lineNumber, JObject jObject)
{
var timestamp = GetRequiredTimestampField(lineNumber, jObject, ClefFields.Timestamp);
string messageTemplate;
if (TryGetOptionalField(lineNumber, jObject, ClefFields.MessageTemplate, out var mt))
{
messageTemplate = mt;
}
else if (TryGetOptionalField(lineNumber, jObject, ClefFields.Message, out var m))
{
messageTemplate = MessageTemplateSyntax.Escape(m);
}
else
{
messageTemplate = null;
}
var level = LogEventLevel.Information;
if (TryGetOptionalField(lineNumber, jObject, ClefFields.Level, out string l))
{
level = (LogEventLevel)Enum.Parse(typeof(LogEventLevel), l);
}
Exception exception = null;
if (TryGetOptionalField(lineNumber, jObject, ClefFields.Exception, out string ex))
{
exception = new TextException(ex);
}
var parsedTemplate = messageTemplate == null ?
new MessageTemplate(Enumerable.Empty <MessageTemplateToken>()) :
Parser.Parse(messageTemplate);
var renderings = NoRenderings;
if (jObject.TryGetValue(ClefFields.Renderings, out JToken r))
{
var renderedByIndex = r as JArray;
if (renderedByIndex == null)
{
throw new InvalidDataException($"The `{ClefFields.Renderings}` value on line {lineNumber} is not an array as expected.");
}
renderings = parsedTemplate.Tokens
.OfType <PropertyToken>()
.Where(t => t.Format != null)
.Zip(renderedByIndex, (t, rd) => new Rendering(t.PropertyName, t.Format, rd.Value <string>()))
.ToArray();
}
var properties = jObject
.Properties()
.Where(f => !ClefFields.All.Contains(f.Name))
.Select(f =>
{
var name = ClefFields.Unescape(f.Name);
var renderingsByFormat = renderings.Length != 0 ? renderings.Where(rd => rd.Name == name).ToArray() : NoRenderings;
return(PropertyFactory.CreateProperty(name, f.Value, renderingsByFormat));
})
.ToList();
// TODO: this should attempt to support numeric ids.
if (TryGetOptionalField(lineNumber, jObject, ClefFields.EventId, out var eventId))
{
properties.Add(new LogEventProperty("@i", new ScalarValue(eventId)));
}
return(new LogEvent(timestamp, level, exception, parsedTemplate, properties));
}