取得量度 CloudWatch

列出指標

若要列出CloudWatch量度，請建立ListMetricsRequest並呼叫 CloudWatchClient的listMetrics方法。您可以使用 ListMetricsRequest 來根據命名空間、指標名稱或維度，篩選傳回的指標。

注意

您可以在Amazon CloudWatch使用者指南的「量度和維度參考」中找到由AWS服務公佈的Amazon CloudWatch量度和維度清單。

匯入

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsRequest;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsResponse;
import software.amazon.awssdk.services.cloudwatch.model.Metric;

Code

    public static void listMets( CloudWatchClient cw, String namespace) {

        boolean done = false;
        String nextToken = null;

        try {
            while(!done) {

                ListMetricsResponse response;

                if (nextToken == null) {
                   ListMetricsRequest request = ListMetricsRequest.builder()
                        .namespace(namespace)
                        .build();

                 response = cw.listMetrics(request);
                } else {
                  ListMetricsRequest request = ListMetricsRequest.builder()
                        .namespace(namespace)
                        .nextToken(nextToken)
                        .build();

                response = cw.listMetrics(request);
            }

            for (Metric metric : response.metrics()) {
                System.out.printf(
                        "Retrieved metric %s", metric.metricName());
                System.out.println();
            }

            if(response.nextToken() == null) {
                done = true;
            } else {
                nextToken = response.nextToken();
            }
        }

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

ListMetricsResponse通過調用其getMetrics方法返回度量。

結果可能會分頁。若要擷取下一批次結果，請在回應物件上呼叫 nextToken，並使用字符值來建置新的請求物件。然後以新的請求再次呼叫 listMetrics 方法。

請參閱（詳見）的完整實例 GitHub。

其他資訊

• ListMetrics在 Amazon CloudWatch API 參考資料中