Automate deployment from CloudBees / Jenkins to Amazon Beanstalk

In my latest post about Amazon Beanstalk I explained how to deploy to Amazon Beanstalk in 3 simple steps. Of  course this a manual activity. We often deploy new versions of apps to Amazon Beanstalk, so it is a ‘must have’ to automate this proces.

Amazon delivers the AWS SDK for Java API to access Amazon Beanstalk. Lets investigate what we need.

We use the AWSCredentials interface from the com.amazonaws.auth package, to login with the AWS credentials.

To access the Amazon S3 we use the AmazonS3 interface and the AmazonS3Client class from the com.amazonaws.services.s3 package.

We use the AWSElasticBeanstalk interface and the AWSElasticBeanstalkClient class from the com.amazonaws.services.elasticbeanstalk package, to use the following methods:

• deleteApplicationVersion – Deletes the specified version from the specified application.
• createStorageLocation – Creates the Amazon S3 storage location for the account, to upload the WAR.
• createApplicationVersion – Creates an application version for the specified application.
• updateEnvironment – Updates the environment description, deploys a new application version, updates the configuration settings to an entirely new configuration template, or updates select configuration option values in the running environment.

From the com.amazonaws.services.elasticbeanstalk.model package we use the following methods in combination with AWSElasticBeanstalkClient

• DeleteApplicationVersionRequest – Deletes the specified version from the specified application.
• S3Location – A specification of a location in Amazon S3.
• CreateApplicationVersionRequest – Creates an application version for the specified application.
• UpdateEnvironmentRequest – Updates the environment description, deploys a new application version, updates the configuration settings to an entirely new configuration template, or updates select configuration option values in the running environment.
• DescribeEnvironmentsRequest – Returns descriptions for existing environments.
• DescribeApplicationVersionsRequest – Returns descriptions for existing application versions.

Lets make a script using the Groovy language:

import com.amazonaws.auth.*
import com.amazonaws.services.s3.*
import com.amazonaws.services.elasticbeanstalk.*
import com.amazonaws.services.elasticbeanstalk.model.*

target(deployBeanstalk: 'Deploy to AWS Beanstalk') {
 // Check existing version and check if environment is production
 depends(checkExistingAppVersion, prodEnviroment, war)

 // Log on to AWS with your credentials
 def credentials = credentials
 AmazonS3 s3 = new AmazonS3Client(credentials)
 AWSElasticBeanstalk elasticBeanstalk = new AWSElasticBeanstalkClient(credentials)

 // Delete existing application
 if (applicationVersionAlreadyExists(elasticBeanstalk)) {
 println "Delete existing application version"
 def deleteRequest = new DeleteApplicationVersionRequest(applicationName:     applicationName,
 versionLabel: versionLabel, deleteSourceBundle: true)
 elasticBeanstalk.deleteApplicationVersion(deleteRequest)
 }

 // Upload a WAR file to Amazon S3
 println "Uploading application to Amazon S3"
 def warFile = projectWarFilename
 String bucketName = elasticBeanstalk.createStorageLocation().getS3Bucket()
 String key = URLEncoder.encode(warFile.name, 'UTF-8')
 def s3Result = s3.putObject(bucketName, key, warFile)
 println "Uploaded application $s3Result.versionId"

 // Register a new application version
 println "Create application version with uploaded application"
 def createApplicationRequest = new CreateApplicationVersionRequest(
 applicationName: applicationName, versionLabel: versionLabel,
 description: description,
 autoCreateApplication: true, sourceBundle: new S3Location(bucketName, key)
 )
 def createApplicationVersionResult = elasticBeanstalk.createApplicationVersion(createApplicationRequest)
 println "Registered application version $createApplicationVersionResult"

 // Deploy the new version to an existing environment
 // If you don't have any AWS Elastic Beanstalk environments yet, you
 // can easily create one with with:
 // The AWS Management Console - http://console.aws.amazon.com/elasticbeanstalk
 // The AWS Toolkit for Eclipse - http://aws.amazon.com/eclipse
 // The Elastic Beanstalk CLI - http://aws.amazon.com/elasticbeanstalk
 println "Update environment with uploaded application version"
 def updateEnviromentRequest = new UpdateEnvironmentRequest(environmentName:  environmentName, versionLabel: versionLabel)
 def updateEnviromentResult = elasticBeanstalk.updateEnvironment(updateEnviromentRequest)
 println "Updated environment $updateEnviromentResult"
}

From CloudBees / Jenkins we make a separate build job ‘Deployment_Amazon’ where we can easily put the Grails command line to execute the above script.

So we have seen in this post that we can easy setup a Build environment using CloudBees / Jenkins and Deploy automatically via the ‘AWS SDK for Java API’ to Amazon Beanstalk. Lets enjoy Develop, Build and Deploy in the Cloud!

*** Update ***

Hereby the complete script with the private functions. Just add this script right after the above script. Fill in own credentials(access- and secretkey, application- and environmentname. Succes.

 

setDefaultTarget(deployBeanstalk)

private boolean applicationVersionIsDeployed(elasticBeanstalk) {
    def search = new DescribeEnvironmentsRequest(applicationName: applicationName, versionLabel: versionLabel)
    def result = elasticBeanstalk.describeEnvironments(search)
    !result.environments.empty
}

private boolean applicationVersionAlreadyExists(elasticBeanstalk) {
    def search = new DescribeApplicationVersionsRequest(applicationName: applicationName, versionLabels: [versionLabel])
    def result = elasticBeanstalk.describeApplicationVersions(search)
    !result.applicationVersions.empty
}

private AWSCredentials getCredentials() {
    def accessKey = '@@@@@@@@@@@@@@@'
    def secretKey = '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
    def credentials = new BasicAWSCredentials(accessKey, secretKey)
    credentials
}

private String getApplicationName() {
    '@@@@@@@@'
}

private String getEnvironmentName() {
    '@@@@@@@@'
}

private String getDescription() {
    applicationName + " via 'grails deploy-beanstalk' build on ${new Date().format('yyyy-MM-dd')}"
}

private String getVersionLabel() {
    def applicationVersion = metadata.getApplicationVersion()
    applicationVersion + '-production'
}

private File getProjectWarFilename() {
    new File(basedir, 'target/scs-' + versionLabel + '.war')
}