protected void reconfigureService()

in software/webapp/src/main/java/org/apache/brooklyn/entity/dns/geoscaling/GeoscalingDnsServiceImpl.java [160:202]
38 lines of code
7 McCabe index (conditional complexity)

    protected void reconfigureService(Collection<HostGeoInfo> targetHosts) {
        if (!isConfigured) {
            this.rememberedTargetHosts = MutableSet.copyOf(targetHosts);
            return;
        }
        
        webClient.login(username, password);
        Domain primaryDomain = webClient.getPrimaryDomain(primaryDomainName);
        if (primaryDomain==null) 
            throw new NullPointerException(this+" got null from web client for primary domain "+primaryDomainName);
        SmartSubdomain smartSubdomain = primaryDomain.getSmartSubdomain(smartSubdomainName);
        
        if (smartSubdomain == null) {
            log.info("GeoScaling {} smart subdomain '{}.{}' does not exist, creating it now", new Object[] {this, smartSubdomainName, primaryDomainName});
            // TODO use WithMutexes to ensure this is single-entrant
            primaryDomain.createSmartSubdomain(smartSubdomainName);
            smartSubdomain = primaryDomain.getSmartSubdomain(smartSubdomainName);
        }
        
        if (smartSubdomain != null) {
            log.debug("GeoScaling {} being reconfigured to use {}", this, targetHosts);
            String script = GeoscalingScriptGenerator.generateScriptString(targetHosts);
            smartSubdomain.configure(PROVIDE_CITY_INFO, script);
            if (targetHosts.isEmpty()) {
                setServiceState(Lifecycle.CREATED);
                sensors().set(ROOT_URL, null);
                sensors().set(MAIN_URI, null);
            } else {
                setServiceState(Lifecycle.RUNNING);
                String domain = getAttribute(MANAGED_DOMAIN);
                if (!Strings.isEmpty(domain)) {
                    sensors().set(ROOT_URL, "http://"+domain+"/");
                    sensors().set(MAIN_URI, URI.create("http://"+domain+"/"));
                }
            }
        } else {
            log.warn("Failed to retrieve or create GeoScaling smart subdomain '"+smartSubdomainName+"."+primaryDomainName+
                    "', aborting attempt to configure service");
            setServiceState(Lifecycle.ON_FIRE);
        }
        
        webClient.logout();
    }