使用Java检索AWS EC2s CPUUtilization

我试图获得特定区域中EC2的所有平均CPU使用率。我尝试了以下方法：

• 每个请求请求一个实例统计信息，虽然工作很慢
• 我试图从请求中删除维度，但得到的响应为空，尽管cli返回所有可用实例（）
• 我尝试为每个请求设置10个维度，但遇到以下异常：

  2016-01-24 23:13:30.925 java[20057:31669898] GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT java.lang.RuntimeException: Requested texture dimensions (62206x154) require dimensions (0x154) that exceed maximum texture size (16384)
   at com.sun.prism.es2.ES2RTTexture.create(ES2RTTexture.java:220)
   at com.sun.prism.es2.ES2ResourceFactory.createRTTexture(ES2ResourceFactory.java:158)
   at com.sun.prism.es2.ES2SwapChain.createGraphics(ES2SwapChain.java:210)
   at com.sun.prism.es2.ES2SwapChain.createGraphics(ES2SwapChain.java:40)
   at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:87)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
   at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125)
   at java.lang.Thread.run(Thread.java:745)
  

代码：

私有列表监视实例（AmazonCloudWatchClient cloudWatchClient，列表维度）{
List datapoints=new ArrayList（）；
试一试{
int-dimensionsLastIndex=0；
对于（int-dimensionsIndex=0；dimensionsIndex private List<Datapoint> monitorInstance(AmazonCloudWatchClient cloudWatchClient, List<Dimension> dimensions) {
     List<Datapoint> datapoints = new ArrayList<>();
     try {
         int dimensionsLastIndex = 0;
         for (int dimensionsIndex = 0; dimensionsIndex < dimensions.size(); dimensionsIndex = dimensionsLastIndex + 1) {
             dimensionsLastIndex = (dimensionsIndex + 10) <= dimensions.size() ? dimensionsIndex + 9 : dimensions.size() - 1;

             long offsetInMilliseconds = 1000 * 60 * 60 * 24;
             GetMetricStatisticsRequest request = new GetMetricStatisticsRequest()
                     .withStartTime(new Date(new Date().getTime() - offsetInMilliseconds))
                     .withNamespace("AWS/EC2")
                     .withPeriod(60 * 60)
                     .withDimensions(dimensions.subList(dimensionsIndex, dimensionsLastIndex))
                     .withMetricName("CPUUtilization")
                     .withStatistics("Average")
                     .withEndTime(new Date());
             GetMetricStatisticsResult getMetricStatisticsResult = cloudWatchClient.getMetricStatistics(request);

             datapoints.addAll(getMetricStatisticsResult.getDatapoints());
         }
         return datapoints;
     } catch (AmazonServiceException e) {
         error(e.getMessage(), stackTraceToString(e));

     }
     return new ArrayList<>();
 }