Introduction

The purpose of this library is to send your spring actuator metrics available using /metrics endpoint generally to AWS cloudwatch with minimal effort from your side.

How do I use this library

You can see a sample usage on the com.kajjoy.spring.devops.cloudwatchmetrics.CloudwatchMetricsApplication file. However here is the quickstart:

1. Define a Client configuration bean for AWS Cloudwatch, for example:

@Bean
    public ClientConfiguration clientConfiguration(){
        ClientConfiguration config = new ClientConfiguration();
        config.setProxyHost(proxyHost);
        config.setProxyPort(proxyPort);
        return config;
    }

2.) Define an AWS Credential Provider bean:

   @Bean
    public AWSCredentialsProvider credentialsProvider(){
        return new CredentialProviderChain();
    }

Note: Both of these have to be spring beans, since they will be searched by the library.

3.) Define few configurable properties for the library:

spring.operational.metrics.cloudwatch.publish.cron=*/10 * * * * *
aws.cloudwatch.region=us-west-2
actuator.metrics.to.publish=mem.free,heap.used,threads.totalStarted
actuator.metrics.units=Kilobytes,Kilobytes,Count
cloudwatch.namespace=spring-actuator-cloudwatch

Note: Number of metrics_to_publish values should be same as number of metrics_units.

4.) Add Two Beans in to your Component Scan, If you are using spring boot, then do something like this:

@SpringBootApplication(scanBasePackageClasses = { CloudWatchPublisher.class, CloudWatchService.class})
public class SpringBootApp {

	 public static void main(String[] args) throws Exception {
		SpringApplication.run(SpringBootApp.class);
	}
}

And that's about it. What do the configurable properties let you do:

a.) Set at what interval the spring actuator metrics should be published to cloudwatch.

b.) Region of your AWS account.

c.) If you want to publish only selective metrics instead of all metrics.

d.) Units that you want to use for these metrics. Allowed metrics are:

Valid Values: Seconds | Microseconds | Milliseconds | Bytes | Kilobytes | Megabytes | Gigabytes | Terabytes | Bits | Kilobits | Megabits | Gigabits | Terabits | Percent | Count | Bytes/Second | Kilobytes/Second | Megabytes/Second | Gigabytes/Second | Terabytes/Second | Bits/Second | Kilobits/Second | Megabits/Second | Gigabits/Second | Terabits/Second | Count/Second | None

e.) Custom cloudwatch namespace that you would want to use for these metrics.

How do I get this library

<dependency>
  <groupId>com.kajjoy.spring.devops</groupId>
  <artifactId>cloudwatch-metrics</artifactId>
  <version>1.1</version>
</dependency>