获取 CloudWatch 指标数据图片 - Amazon CloudWatch
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获取 CloudWatch 指标数据图片

以下代码示例显示如何获取 Amazon CloudWatch 指标数据图片。

操作示例是大型程序的代码摘录,必须在上下文中运行。在以下代码示例中,您可以查看此操作的上下文:

.NET
Amazon SDK for .NET
注意

在 GitHub 上查看更多内容。在 Amazon 代码示例存储库中查找完整示例,了解如何进行设置和运行。

/// <summary> /// Get an image for a metric graphed over time. /// </summary> /// <param name="metricNamespace">The namespace of the metric.</param> /// <param name="metric">The name of the metric.</param> /// <param name="stat">The name of the stat to chart.</param> /// <param name="period">The period to use for the chart.</param> /// <returns>A memory stream for the chart image.</returns> public async Task<MemoryStream> GetTimeSeriesMetricImage(string metricNamespace, string metric, string stat, int period) { var metricImageWidget = new { title = "Example Metric Graph", view = "timeSeries", stacked = false, period = period, width = 1400, height = 600, metrics = new List<List<object>> { new() { metricNamespace, metric, new { stat } } } }; var metricImageWidgetString = JsonSerializer.Serialize(metricImageWidget); var imageResponse = await _amazonCloudWatch.GetMetricWidgetImageAsync( new GetMetricWidgetImageRequest() { MetricWidget = metricImageWidgetString }); return imageResponse.MetricWidgetImage; } /// <summary> /// Save a metric image to a file. /// </summary> /// <param name="memoryStream">The MemoryStream for the metric image.</param> /// <param name="metricName">The name of the metric.</param> /// <returns>The path to the file.</returns> public string SaveMetricImage(MemoryStream memoryStream, string metricName) { var metricFileName = $"{metricName}_{DateTime.Now.Ticks}.png"; using var sr = new StreamReader(memoryStream); // Writes the memory stream to a file. File.WriteAllBytes(metricFileName, memoryStream.ToArray()); var filePath = Path.Join(AppDomain.CurrentDomain.BaseDirectory, metricFileName); return filePath; }
  • 有关 API 详细信息,请参阅《Amazon SDK for .NET API 参考》中的 GetMetricWidgetImage

Java
SDK for Java 2.x
注意

查看 GitHub,了解更多信息。在 Amazon 代码示例存储库中查找完整示例,了解如何进行设置和运行。

public static void getAndOpenMetricImage(CloudWatchClient cw, String fileName) { System.out.println("Getting Image data for custom metric."); try { String myJSON = "{\n" + " \"title\": \"Example Metric Graph\",\n" + " \"view\": \"timeSeries\",\n" + " \"stacked \": false,\n" + " \"period\": 10,\n" + " \"width\": 1400,\n" + " \"height\": 600,\n" + " \"metrics\": [\n" + " [\n" + " \"AWS/Billing\",\n" + " \"EstimatedCharges\",\n" + " \"Currency\",\n" + " \"USD\"\n" + " ]\n" + " ]\n" + "}"; GetMetricWidgetImageRequest imageRequest = GetMetricWidgetImageRequest.builder() .metricWidget(myJSON) .build(); GetMetricWidgetImageResponse response = cw.getMetricWidgetImage(imageRequest); SdkBytes sdkBytes = response.metricWidgetImage(); byte[] bytes = sdkBytes.asByteArray(); File outputFile = new File(fileName); try (FileOutputStream outputStream = new FileOutputStream(outputFile)) { outputStream.write(bytes); } } catch (CloudWatchException | IOException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • 有关 API 详细信息,请参阅《Amazon SDK for Java 2.x API 参考》中的 GetMetricWidgetImage

Kotlin
适用于 Kotlin 的 SDK
注意

查看 GitHub,了解更多信息。在 Amazon 代码示例存储库中查找完整示例,了解如何进行设置和运行。

suspend fun getAndOpenMetricImage(fileName: String) { println("Getting Image data for custom metric.") val myJSON = """{ "title": "Example Metric Graph", "view": "timeSeries", "stacked ": false, "period": 10, "width": 1400, "height": 600, "metrics": [ [ "AWS/Billing", "EstimatedCharges", "Currency", "USD" ] ] }""" val imageRequest = GetMetricWidgetImageRequest { metricWidget = myJSON } CloudWatchClient { region = "us-east-1" }.use { cwClient -> val response = cwClient.getMetricWidgetImage(imageRequest) val bytes = response.metricWidgetImage if (bytes != null) { File(fileName).writeBytes(bytes) } } println("You have successfully written data to $fileName") }
  • 有关 API 详细信息,请参阅《Amazon SDK for Kotlin API 参考》中的 GetMetricWidgetImage

有关 Amazon SDK 开发人员指南和代码示例的完整列表,请参阅 将 CloudWatch 与 Amazon SDK 结合使用。本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。