@Override public HandlerResult handle(ProcessState state, ProcessInstance process) { IpAddress ipAddress = (IpAddress) state.getResource(); Network network = objectManager.loadResource(Network.class, ipAddress.getNetworkId()); if (!networkService.shouldAssignIpAddress(network)) { return null; } String assignedIp = ipAddress.getAddress(); Long subnetId = ipAddress.getSubnetId(); IPAssignment assignment = allocateIp(ipAddress, network); if (assignment != null) { assignedIp = assignment.getIpAddress(); if (assignment.getSubnet() != null) { subnetId = assignment.getSubnet().getId(); } } return new HandlerResult( IP_ADDRESS.ADDRESS, assignedIp, IP_ADDRESS.SUBNET_ID, subnetId, IP_ADDRESS.NAME, StringUtils.isBlank(ipAddress.getName()) ? assignedIp : ipAddress.getName()); }