public ISpanContext Extract <TCarrier>(IFormat <TCarrier> format, TCarrier carrier)
{
VerifySupportedFormat(format);
ITextMap implCarrier = GetRealCarrier(carrier);
Trace trace = null;
if (!_traceExtractor.TryExtract(implCarrier, (c, key) => c.Where(x => x.Key == key).Select(x => x.Value).FirstOrDefault(), out trace))
{
return(null);
}
return(new OtSpanContext(trace));
}
/// <summary>
/// 通过<paramref name="dic"/>构建本地跟踪通过<see cref="ServerTrace"/>,<see cref="LocalTrace"/>使用
/// </summary>
/// <param name="dic">字典对象</param>
public void Create(IDictionary <string, string> dic = null)
{
if (dic == null)
{
Unity.Get();
}
else
{
tracing.Trace trace;
if (!_extractor.TryExtract(dic, (c, key) =>
{
string value;
c.TryGetValue(key, out value);
return(value);
}, out trace))
{
Unity.Get();
}
else
{
Unity.Set(trace);
}
}
}