封装多种trace协议

_ https://github.com/toniz/trace/zipkin

improt tracelog "github.com/toniz/trace"

err := tracelog.SetGrpcExport(ctx, "trace_config.json", "OrderService", "v0.3.10")

http.Handle("/hello", tracelog.NewHandler(http.HandlerFunc(helloHandler), "Hello"))

// 追踪的函数需要带上context来传递上下文信息。
func call_level_3(ctx context.Context) {
    // 继承函数调用的context, 创建子的span
    ctxc, _ := tracelog.NewSpan(ctx, "call_level_3", tracelog.OtelSpanKindProducer)

    // 添加关键属性:可选
    tracelog.AddSpanAttribute(ctxc, map[string]string{"user_id": "1000098"})

    // 添加关键事件:可选
    tracelog.AddSpanEvent(ctxc, "UPDATE", map[string]string{"a":"1", "b":"2", "c":"3"})

    // 设置span状态, 错误就调用 tracelog.SetSpanError(ctxc, err)
    tracelog.SetSpanOK(ctxc, "Successssssss.")
    // 标记该子span结束
    tracelog.EndSpan(ctxc)

    return
}