Get a CloudWatch metric data image - Amazon CloudWatch

Get a CloudWatch metric data image

The following code examples show how to get an Amazon CloudWatch metric data image.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:

.NET
AWS SDK for .NET
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

/// <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; }
Java
SDK for Java 2.x
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

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); } }
Kotlin
SDK for Kotlin
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

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") }

For a complete list of AWS SDK developer guides and code examples, see Using CloudWatch with an AWS SDK. This topic also includes information about getting started and details about previous SDK versions.