public static LogEvent WithParameters(this LogEvent @event, object[] parameters)
{
if (parameters == null || parameters.Length == 0)
{
return(@event);
}
return(@event.MutateProperties(
properties =>
{
var templatePropertyNames = TemplatePropertiesExtractor.ExtractPropertyNames(@event.MessageTemplate);
if (ShouldInferNamesForPositionalParameters(templatePropertyNames))
{
// (iloktionov): Name positional parameters with corresponding placeholder names from template:
for (var i = 0; i < Math.Min(parameters.Length, templatePropertyNames.Length); i++)
{
properties = properties.Set(templatePropertyNames[i], parameters[i]);
}
if (parameters.Length > templatePropertyNames.Length)
{
for (var i = templatePropertyNames.Length; i < parameters.Length; i++)
{
properties = properties.Set(i.ToString(), parameters[i]);
}
}
}
else
{
// (iloktionov): Name positional parameters with their indices:
for (var i = 0; i < parameters.Length; i++)
{
properties = properties.Set(i.ToString(), parameters[i]);
}
}
return properties;
}));
}
public void Should_extract_correct_property_names_from_given_template(string template, params string[] expectedNames)
{
TemplatePropertiesExtractor.ExtractPropertyNames(template).Should().Equal(expectedNames);
}
