How to configure AWS CloudWatch metrics w/ Spring Boot

CloudWatchMetricCollector.java

// Modeled after {@link org.springframework.cloud.netflix.servo.ServoMetricCollector}
// employed explicitly for publication of AWS CloudWatch metrics
public class CloudWatchMetricCollector {

    private final Logger log = LoggerFactory.getLogger(getClass());

    @Value("${spring.aws.cloudwatch.metrics.polling.timeUnit:SECONDS}")
    private String timeUnit;

    @Value("${spring.aws.cloudwatch.metrics.polling.interval:5}")
    private int pollingInterval;

    @Value("${spring.application.name}")
    private String  applicationName;

    @Autowired
    private AWSCredentials awsCredentials;

    public CloudWatchMetricCollector() {
        List<MetricObserver> observers = new ArrayList<MetricObserver>();
        observers.add(new CloudWatchMetricObserver(applicationName, "servo.cloudwatch", new AmazonCloudWatchAsyncClient(awsCredentials)));
        PollRunnable task = new PollRunnable(new MonitorRegistryMetricPoller(),
                BasicMetricFilter.MATCH_ALL, true, observers);

        if (!PollScheduler.getInstance().isStarted()) {
            try {
                PollScheduler.getInstance().start();
            }
            catch (Exception e) {
                // Can fail due to race condition with evil singletons (if more than one
                // app in same JVM)
                log.error("Could not start AWS CloudWatch metrics poller", e);
                return;
            }
        }
        PollScheduler.getInstance().addPoller(task, pollingInterval, TimeUnit.valueOf(timeUnit));
    }

    @PreDestroy
    public void destroy() throws Exception {
        log.info("Stopping Servo PollScheduler");
        if (PollScheduler.getInstance().isStarted()) {
            try {
                PollScheduler.getInstance().stop();
            }
            catch (Exception e) {
                log.error("Could not stop servo metrics poller", e);
            }
        }
    }

}

CloudWatchMetricsConfig.java

@Configuration
@ConditionalOnAwsCloudEnvironment
@EnableContextCredentials
public class CloudWatchMetricsConfig {

    @Bean
    public CloudWatchMetricCollector cloudWatchMetricCollector() {
        return new CloudWatchMetricCollector();
    }
}

And an alternate way is: https://gist.github.com/fastnsilver/ed6948e0f2e464b52d5f