aws xray和golang http调用

Question

我正在尝试在我的go应用程序上使用awx，该应用程序对服务进行http调用。我只是简单地看了一下，不确定是不是漏掉了什么，https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-go-httpclients.html

我像这样调用http：

payloadStr, _ := json.Marshal(dxPayload)

fmt.Println("size: ", int(unsafe.Sizeof(bytes.NewBuffer(payloadStr))))

clambda = &http.Client{}

//-------ADDED XRAY HERE-------//
xray.Client(clambda)

reqLambda, errReq := http.NewRequest("POST", lambdaurl, bytes.NewBuffer(payloadStr))
if errReq != nil {
    log.Fatal("Request Error: ", errReq)
    return
}

reqLambda.Header.Add("accept", "application/json;v=1")
reqLambda.Header.Add("cach-control", "no-cache")
reqLambda.Header.Add("content-type", "application/json")
reqLambda.Header.Add("authorization", "Bearer " + devexToken.AccessToken)

respLambda, errResp := clambda.Do(reqLambda)
if errResp != nil {
    log.Fatal("Status Response Error ", errResp)
    return
} else {

}

在我的main.go文件中，我在func init()中有以下内容

func init() {

    pConfig = createpConfig()

    //aws xray config
    ss, err := sampling.NewLocalizedStrategyFromFilePath("xray.json")

    if err != nil {
        panic(err)
    }
    xray.Configure(xray.Config{
        SamplingStrategy: ss,
    })
}

我的xray.json配置如下所示：

{
  "version": 1,
  "rules": [
    {
      "description": "ehb",
      "service_name": "ehb-kafka-push",
      "http_method": "*",
      "url_path": "/private/api/calllambda/*",
      "fixed_target": 0,
      "rate": 0.85
    }
  ],
  "default": {
    "fixed_target": 1,
    "rate": 0.1
  }
}

现在，当我开始我的AWS应用程序接口调用时，我在AWS xray和我本地的xray守护进程中没有看到任何东西，我只在日志中看到了以下内容：

2018-08-26T18:45:04-07:00 [Info] Initializing AWS X-Ray daemon 2.1.3
2018-08-26T18:45:04-07:00 [Debug] Listening on UDP 127.0.0.1:2000
2018-08-26T18:45:04-07:00 [Info] Using buffer memory limit of 163 MB
2018-08-26T18:45:04-07:00 [Info] 2608 segment buffers allocated
2018-08-26T18:45:04-07:00 [Debug] Fetch region us-east-1 from commandline argument
2018-08-26T18:45:04-07:00 [Info] Using region: us-east-1
2018-08-26T18:45:04-07:00 [Debug] ARN of the AWS resource running the daemon: 
2018-08-26T18:45:04-07:00 [Debug] No Metadata set for telemetry records
2018-08-26T18:45:04-07:00 [Debug] Using Endpoint: https://xray.us-east-1.amazonaws.com
2018-08-26T18:45:04-07:00 [Debug] Telemetry initiated
2018-08-26T18:45:04-07:00 [Debug] Using Endpoint: https://xray.us-east-1.amazonaws.com
2018-08-26T18:45:04-07:00 [Debug] Batch size: 50
2018-08-26T18:46:04-07:00 [Debug] Skipped telemetry data as no segments found
2018-08-26T18:47:04-07:00 [Debug] Skipped telemetry data as no segments found
2018-08-26T18:48:04-07:00 [Debug] Skipped telemetry data as no segments found

这里我漏掉了什么？除了Xray部分，一切似乎都正常，为什么我得不到任何数据或错误？

Answer 1

在Lambda方案中，Lambda负责创建细分市场，而AWS X-Ray Golang SDK仅创建子细分市场，然后发射它们。根据您的代码片段，您没有找到使用X-Ray Go SDK API检测应用程序以在Lambda函数中生成子段的代码。在这里，我附加了一个链接，您可以在该链接中了解如何检测应用程序：lambdadocs