使用 Golang opentelemetry (otel) 覆盖跨度的开始时间和结束时间

Overwrite the StartTime and EndTime of a span with Golang opentelemetry (otel)

我正在为收集的数据生成跟踪 在我进行跟踪之前。这意味着跨度创建时间与实际开始时间不匹配。

我过去曾使用 opentracing:

做到这一点
span := tracer.StartSpan(
    name,
    opentracing.StartTime(startTime),
)

我一直无法在 golang otel 库中找到等效项。我的印象是应该可以 based on this quote from the spec:

Start timestamp, default to current time. This argument SHOULD only be set when span creation time has already passed. If API is called at a moment of a Span logical start, API user MUST NOT explicitly set this argument.

“默认”一词意味着应该可以在跨度创建后更改此时间戳。

我试过使用 span.SetAttributes:

span.SetAttributes(attribute.Int64("StartTime", 0))

但这(不出所料)设置了一个属性:

{
        // ...
        "StartTime": "2022-04-09T12:28:57.271375+10:00",
        "EndTime": "2022-04-09T12:28:57.271417375+10:00",
        "Attributes": [
                {
                        "Key": "StartTime",
                        "Value": {
                                "Type": "INT64",
                                "Value": 0
                        }
                },
         // ...
}

您需要使用WithTimestamp

startTime := time.Now()
ctx, span := tracer.Start(ctx, "foo", trace.WithTimestamp(startTime))

// do your work

span.End(trace.WithTimestamp(time.Now()))