Publishing custom metric data to CloudWatch - AWS SDK for Java 2.x

Publishing custom metric data to CloudWatch

A number of AWS services publish their own metrics in namespaces beginning with " AWS " You can also publish custom metric data using your own namespace (as long as it doesn’t begin with " AWS ").

Publish custom metric data

To publish your own metric data, call the CloudWatchClient’s putMetricData method with a PutMetricDataRequest. The PutMetricDataRequest must include the custom namespace to use for the data, and information about the data point itself in a MetricDatum object.


You cannot specify a namespace that begins with " AWS ". Namespaces that begin with " AWS " are reserved for use by Amazon Web Services products.


import; import; import; import; import; import; import; import java.time.Instant; import java.time.ZoneOffset; import java.time.ZonedDateTime; import java.time.format.DateTimeFormatter;


public static void putMetData(CloudWatchClient cw, Double dataPoint ) { try { Dimension dimension = Dimension.builder() .name("UNIQUE_PAGES") .value("URLS") .build(); // Set an Instant object String time = ZoneOffset.UTC ).format( DateTimeFormatter.ISO_INSTANT ); Instant instant = Instant.parse(time); MetricDatum datum = MetricDatum.builder() .metricName("PAGES_VISITED") .unit(StandardUnit.NONE) .value(dataPoint) .timestamp(instant) .dimensions(dimension).build(); PutMetricDataRequest request = PutMetricDataRequest.builder() .namespace("SITE/TRAFFIC") .metricData(datum).build(); cw.putMetricData(request); } catch (CloudWatchException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } System.out.printf("Successfully put data point %f", dataPoint); }

See the complete example on GitHub.

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