class EurekaLoadBalancerClientConfiguration {

	private static final Log LOG = LogFactory.getLog(EurekaLoadBalancerClientConfiguration.class);

	private final EurekaClientConfig clientConfig;

	private final EurekaInstanceConfig eurekaConfig;

	private final LoadBalancerZoneConfig zoneConfig;

	private final EurekaLoadBalancerProperties eurekaLoadBalancerProperties;

	public EurekaLoadBalancerClientConfiguration(@Autowired(required = false) EurekaClientConfig clientConfig,
			@Autowired(required = false) EurekaInstanceConfig eurekaInstanceConfig, LoadBalancerZoneConfig zoneConfig,
			EurekaLoadBalancerProperties eurekaLoadBalancerProperties) {
		this.clientConfig = clientConfig;
		this.eurekaConfig = eurekaInstanceConfig;
		this.zoneConfig = zoneConfig;
		this.eurekaLoadBalancerProperties = eurekaLoadBalancerProperties;
	}

	@PostConstruct
	public void postprocess() {
		if (StringUtils.hasText(zoneConfig.getZone())) {
			return;
		}
		String zone = getZoneFromEureka();
		if (StringUtils.hasText(zone)) {
			if (LOG.isDebugEnabled()) {
				LOG.debug("Setting the value of '" + LOADBALANCER_ZONE + "' to " + zone);
			}
			zoneConfig.setZone(zone);
		}
	}

	private String getZoneFromEureka() {<FILL_FUNCTION_BODY>}

}

		String zone;
		boolean approximateZoneFromHostname = eurekaLoadBalancerProperties.isApproximateZoneFromHostname();
		if (approximateZoneFromHostname && eurekaConfig != null) {
			return ZoneUtils.extractApproximateZone(this.eurekaConfig.getHostName(false));
		}
		else {
			zone = eurekaConfig == null ? null : eurekaConfig.getMetadataMap().get("zone");
			if (!StringUtils.hasText(zone) && clientConfig != null) {
				String[] zones = clientConfig.getAvailabilityZones(clientConfig.getRegion());
				// Pick the first one from the regions we want to connect to
				zone = zones != null && zones.length > 0 ? zones[0] : null;
			}
			return zone;
		}
	
<no_super_class>