C# 如何在ListMetrics函数中使用nextToken

我试图使用函数ListMetrics列出CloudWatch中存储的所有度量。 该函数返回大约500个度量和一个名为NextToken的字符串值，该值将在下一次调用中用于获取其余度量

  // creates the CloudWatch client
            var cw = Amazon.AWSClientFactory.CreateAmazonCloudWatchClient(Amazon.RegionEndpoint.EUWest1);
        // initialses the list metrics request
        ListMetricsRequest lmr = new ListMetricsRequest();
        ListMetricsResponse lmresponse = cw.ListMetrics(lmr);



        // loop that uses the token to get all the metrics available
        // not finished yet
        do
        {
            lmresponse = cw.ListMetrics(lmr);
            lmresponse.NextToken;

        } while (lmresponse.NextToken != null);

下面是我的代码，但我不知道如何使用NextToken获取其余的度量

  // creates the CloudWatch client
            var cw = Amazon.AWSClientFactory.CreateAmazonCloudWatchClient(Amazon.RegionEndpoint.EUWest1);
        // initialses the list metrics request
        ListMetricsRequest lmr = new ListMetricsRequest();
        ListMetricsResponse lmresponse = cw.ListMetrics(lmr);



        // loop that uses the token to get all the metrics available
        // not finished yet
        do
        {
            lmresponse = cw.ListMetrics(lmr);
            lmresponse.NextToken;

        } while (lmresponse.NextToken != null);

---

我想知道如何使用NextToken来获取其余指标。很遗憾，我在网上找不到任何例子

如果您只需要循环整个度量列表，我将使用

foreach

循环。代码如下所示：

        // creates the CloudWatch client
        var cw = Amazon.AWSClientFactory.CreateAmazonCloudWatchClient(Amazon.RegionEndpoint.EUWest1);
        // initialses the list metrics request
        ListMetricsRequest lmr = new ListMetricsRequest();
        ListMetricsResponse lmresponse = cw.ListMetrics(lmr);

        foreach (Metric metric in lmresponse.Metrics)
        {
            // do something with
            // metric.MetricName;
            // metric.Dimensions;
            // etc
        }

---

如果响应中有NextToken，您可以在下一个请求中使用它：

// creates the CloudWatch client
var cw =  Amazon.AWSClientFactory.CreateAmazonCloudWatchClient(Amazon.RegionEndpoint.EUWest1);
// initialses the list metrics request
ListMetricsRequest lmr = new ListMetricsRequest();
ListMetricsResponse lmresponse = cw.ListMetrics(lmr);

while (lmresponse.NextToken != null);
{
    // set request token 
    lmr.NextToken = lmresponse.NextToken;
    lmresponse = cw.ListMetrics(lmr);

    // Process metrics found in lmresponse.Metrics
} 

---

将其置于do while循环中可确保ListMetrics函数不断被调用，并列出所有指标，只要nextToken不为null

private string nextToken;

do
{
  lmrequest.NextToken = nextToken;
  lmresponse = cloudwatch.ListMetrics(lmrequest);
  nextToken = lmresponse.NextToken;
} while (nextToken != null);

---

感谢你的帮助，但这并不是我真正想要的。我需要的帮助是如何使用nextToken值获取剩余的度量值。注意，如果按字面理解，这将跳过处理第一页。您还必须在while循环之前进行处理，因此可能在这两个位置都有注释或函数调用ProcessMetrics（lmresponse）@BigMan的回复将确保所有内容都得到处理，并且更加简洁，但是如果超过30页，您也可能会遇到限制问题。