void Write(JsonWriter writer, Span span)
{
writer.WriteStartObject();
writer.WritePropertyName("traceId");
writer.WriteValue(span.Context.TraceId.ToString());
writer.WritePropertyName("name");
writer.WriteValue(span.Name);
writer.WritePropertyName("id");
writer.WriteValue(span.Context.SpanId.ToString("x16"));
//set parent id if specified
writer.WritePropertyName("parentId");
writer.WriteValue(span.Context.ParentId?.ToString("x16"));
//set span id if specified
Write(writer, span.Kind);
writer.WritePropertyName("timestamp");
writer.WriteValue(ZipkinUtil.UnixStartMs(span));
writer.WritePropertyName("duration");
writer.WriteValue(ZipkinUtil.DurationMs(span));
writer.WritePropertyName("debug");
writer.WriteValue(span.Context.Debug);
writer.WritePropertyName("shared");
writer.WriteValue(span.Context.Shared);
//remote endpoint obj
Write(writer, "localEndpoint", span.LocalEndpoint);
Write(writer, "remoteEndpoint", span.RemoteEndpoint);
Write(writer, span.Annotations);
Write(writer, span.Tags);
writer.WriteEndObject();
}
void Write(JsonWriter writer, IReadOnlyList <Annotation> annotations)
{
writer.WritePropertyName("annotations");
writer.WriteStartArray();
if (annotations.Count > 0)
{
foreach (var annotation in annotations)
{
writer.WriteStartObject();
writer.WritePropertyName("timestamp");
writer.WriteValue(ZipkinUtil.ToUnixMs(annotation.TimeStamp));
writer.WritePropertyName("value");
writer.WriteValue(annotation.Value);
writer.WriteEndObject();
}
}
writer.WriteEndArray();
}