public ObjectFormatter(Type type, DiagnosticListenerOptions options)
{
var(fieldFormatters, tagFormatters) = CreateFormatters(type, options);
_fieldFormatters = fieldFormatters.ToArray();
_fieldCount = _fieldFormatters.Length;
_tagFormatters = tagFormatters.ToArray();
_tagCount = _tagFormatters.Length;
}
public void AddsDefaultTags()
{
var options = new DiagnosticListenerOptions();
options.AddDefaultTag("foo", "one");
options.AddDefaultTag("bar", "two");
var text = Encoding.UTF8.GetString(options.DefaultTags);
Assert.Equal(",foo=one,bar=two", text);
}
public void FormatsCustomField()
{
var args = new { custom = new CustomObject {
Value = 42, Thing = "foo"
} };
var options = new DiagnosticListenerOptions();
options.AddCustomFieldFormatter("custom", typeof(CustomObject), p => new CustomObjectFieldFormatter(p));
var objectFormatter = new ObjectFormatter(args.GetType(), options);
var buffer = new byte[128];
var span = buffer.AsSpan();
Assert.True(objectFormatter.Write(args, null, span, out int written));
var text = Encoding.UTF8.GetString(buffer, 0, written);
Assert.Equal(" v=42", text);
}
public void WritesDefaultTags()
{
var now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
var expected = $"test,foo=bar,tag=foo foo=42i {now}\n";
var options = new DiagnosticListenerOptions();
options.AddDefaultTag("foo", "bar");
var obj = new { tag = "foo", foo = 42 };
var formatter = new InfluxLineWriter("test", obj.GetType(), options);
var memory = ArrayPool <byte> .Shared.Rent(1024);
var span = memory.AsSpan();
formatter.TryWrite(span, obj, null, now, out int written);
var str = Encoding.UTF8.GetString(memory, 0, written);
Assert.Equal(expected, str);
ArrayPool <byte> .Shared.Return(memory);
}
public void WritesTagsAndFields_WithFormattedNames()
{
var now = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
var expected = $"test,TAG=foo FOO=42i {now}\n";
var options = new DiagnosticListenerOptions();
options.TagNameFormatter = n => n.ToUpperInvariant();
options.FieldNameFormatter = n => n.ToUpperInvariant();
var obj = new { tag = "foo", foo = 42 };
var formatter = new InfluxLineWriter("test", obj.GetType(), options);
var memory = ArrayPool <byte> .Shared.Rent(1024);
var span = memory.AsSpan();
formatter.TryWrite(span, obj, null, now, out int written);
var str = Encoding.UTF8.GetString(memory, 0, written);
Assert.Equal(expected, str);
ArrayPool <byte> .Shared.Return(memory);
}
public void WritesTagsAndFields_WithFormattedNames()
{
const string expected = ",TAG=foo FOO=42i";
var options = new DiagnosticListenerOptions();
options.TagNameFormatter = n => n.ToUpperInvariant();
options.FieldNameFormatter = n => n.ToUpperInvariant();
var obj = new { tag = "foo", foo = 42 };
var formatter = new ObjectFormatter(obj.GetType(), options);
var memory = ArrayPool <byte> .Shared.Rent(1024);
var span = memory.AsSpan();
formatter.Write(obj, null, span, out int written);
var str = Encoding.UTF8.GetString(memory, 0, written);
Assert.Equal(expected.Length, written);
Assert.Equal(expected, str);
ArrayPool <byte> .Shared.Return(memory);
}
private static (List <IFormatter> fieldFormatters, List <IFormatter> tagFormatters) CreateFormatters(Type type,
DiagnosticListenerOptions options)
{
var fieldFormatters = new List <IFormatter>();
var tagFormatters = new List <IFormatter>();
foreach (var property in type.GetProperties().Where(p => p.CanRead))
{
if (CheckCustomFormatters(options.CustomFieldFormatters, options.CustomTagFormatters, property, fieldFormatters, tagFormatters))
{
continue;
}
if (FieldFormatter.IsFieldType(property.PropertyType))
{
var formatter = FieldFormatter.TryCreate(property, options.FieldNameFormatter ?? NameFixer.Identity);
if (formatter != null)
{
fieldFormatters.Add(formatter);
}
}
else if (TagFormatter.IsTagType(property.PropertyType))
{
var tagFormatter = TagFormatter.TryCreate(property, options.TagNameFormatter ?? NameFixer.Identity);
if (tagFormatter != null)
{
tagFormatters.Add(tagFormatter);
}
}
}
return(fieldFormatters, tagFormatters);
}