/// <summary>
/// Create a new instance of <see cref="LogEventId"/>.
/// </summary>
/// <param name="eventId"></param>
/// <param name="id"></param>
/// <param name="name"></param>
internal LogEventId(LogEventId eventId, string id, string name)
{
Id = id;
Name = name;
TraceId = eventId.TraceId;
Timestamp = Now();
_parentEventId = eventId;
}
/// <summary>
/// Create a new instance of <see cref="LogEventId"/>.
/// </summary>
/// <param name="id"></param>
/// <param name="name"></param>
/// <param name="traceId"></param>
internal LogEventId(string id, string name, string traceId)
{
Id = id;
Name = name;
TraceId = traceId;
Timestamp = Now();
_parentEventId = default;
}
public ManuallyLogEventDescriptor(LogEventId eventId, LogEventLevel level, Exception exception, string messageTemplate,
ILogCallerInfo callerInfo, LogEventContext context = null, params object[] messageTemplateParameters)
{
EventId = eventId;
Level = level;
Exception = exception;
MessageTemplate = messageTemplate;
CallerInfo = callerInfo;
Context = context;
MessageTemplateParameters = messageTemplateParameters;
}
private static LogEventId CreateOrUpdateCurrentEventId(string id, string name, string traceId)
{
/*
* 1、 当 LogEventId.Current 为空的时候（此时 NeedUpdateCurrentValue 为 true），将压入一个新的 LogEventId 实例作为 root，NeedUpdateCurrentValue 标记为 false，并返回
* 2、 当 LogEventId.Current 不为空，则取出 Current，并以之作为 Parent，生成一个新的 LogEventId 实例，不压如入 Current，返回
* 3、 当 BeginScope，则将 NeedUpdateCurrentValue 标记为 true;
* 在下一次 TouchCurrentEventId 时将第一个 eventId 压入，将原 current 作为 Parent
*/
name ??= string.Empty;
if (string.IsNullOrWhiteSpace(id))
{
id = Guid.NewGuid().ToString();
}
var eventIdMaybe = Optional.From(LogEventId.Current);
var realTraceId = MakeRealTraceId(Optional.From(eventIdMaybe.Value?.TraceId), traceId);
var businessTraceId = MakeBusinessTraceId(Optional.From(eventIdMaybe.Value?.BusinessTraceId), traceId, realTraceId);
LogEventId instance;
if (eventIdMaybe.HasValue)
{
instance = new LogEventId(eventIdMaybe.Value, id, name)
{
BusinessTraceId = businessTraceId
};
}
else
{
instance = new LogEventId(id, name, realTraceId)
{
BusinessTraceId = businessTraceId
};
}
if (LogEventId.NeedUpdateCurrentValue)
{
LogEventId.Current = instance;
LogEventId.NeedUpdateCurrentValue = false;
}
return(instance);
}