AWS Route 53 DNS manipulation with Gradle.

gistfile1.txt

	/**
	 * Updates the IP addresses 
	 */
	void assignInstancesToURL(url) {
		initInstancesFromReservationId()
		
		// all the changes to make
		def changes = new ArrayList<com.amazonaws.services.route53.model.Change>()
		
		def existingDNS = listRecordSets()
		
		log.info "Existing DNS: \n $existingDNS"
		
		// delete
		def aRecordRemove = existingDNS.findResult { "${url}." == it.name && it.type == "A" ? it : null }
		if (aRecordRemove) {
			changes.add(new com.amazonaws.services.route53.model.Change("DELETE", aRecordRemove))
		} else {
			log.info "no existing dns for $url"
		}
		
		//add new
		def aRecord = new com.amazonaws.services.route53.model.ResourceRecordSet(url, "A")
		aRecord.TTL = 1		
		aRecord.resourceRecords = instances.collect { new com.amazonaws.services.route53.model.ResourceRecord(it.publicIpAddress) }
		changes.add(new com.amazonaws.services.route53.model.Change("CREATE", aRecord))
		log.info "New IP addresses: \n" + instances.collect { it.publicIpAddress + "\n" }
		
		def changeBatch = new com.amazonaws.services.route53.model.ChangeBatch(changes);
		def changeRequest = new com.amazonaws.services.route53.model.ChangeResourceRecordSetsRequest(hostedZoneId, changeBatch);
		
		// send the request
		def result = route53Client.changeResourceRecordSets(changeRequest)
		System.out.println(result.toString())

	}
	/**
	 * Lists the record set for the specified hosted zone
	 */
	List listRecordSets() {
		def listRequest = new com.amazonaws.services.route53.model.ListResourceRecordSetsRequest();
		
		listRequest.setHostedZoneId(hostedZoneId);
		def result = route53Client.listResourceRecordSets(listRequest);
		
		return result.getResourceRecordSets();
	}