};
private MappingNic getLoadBalancingIpNic(DataCenterVO zone, Network network, long sourceIpId, boolean revoked, String existedGuestIp)
throws ResourceUnavailableException {
String srcIp = _networkModel.getIp(sourceIpId).getAddress().addr();
InlineLoadBalancerNicMapVO mapping = _inlineLoadBalancerNicMapDao.findByPublicIpAddress(srcIp);
Nic loadBalancingIpNic = null;
MappingNic nic = new MappingNic();
nic.setState(MappingState.Unchanged);
if (!revoked) {
if (mapping == null) {
// Acquire a new guest IP address and save it as the load balancing IP address
String loadBalancingIpAddress = existedGuestIp;
if (loadBalancingIpAddress == null) {
if (network.getGuestType() == Network.GuestType.Isolated) {
loadBalancingIpAddress = _ipAddrMgr.acquireGuestIpAddress(network, null);
} else if (network.getGuestType() == Network.GuestType.Shared) {
try {
PublicIp directIp =
_ipAddrMgr.assignPublicIpAddress(network.getDataCenterId(), null, _accountDao.findById(network.getAccountId()), VlanType.DirectAttached,
network.getId(), null, true);
loadBalancingIpAddress = directIp.getAddress().addr();
} catch (InsufficientCapacityException capException) {
String msg = "Ran out of guest IP addresses from the shared network.";
s_logger.error(msg);
throw new ResourceUnavailableException(msg, DataCenter.class, network.getDataCenterId());
}
}
}
if (loadBalancingIpAddress == null) {
String msg = "Ran out of guest IP addresses.";
s_logger.error(msg);
throw new ResourceUnavailableException(msg, DataCenter.class, network.getDataCenterId());
}
// If a NIC doesn't exist for the load balancing IP address, create one
loadBalancingIpNic = _nicDao.findByIp4AddressAndNetworkId(loadBalancingIpAddress, network.getId());
if (loadBalancingIpNic == null) {
loadBalancingIpNic = _networkMgr.savePlaceholderNic(network, loadBalancingIpAddress, null, null);
}
// Save a mapping between the source IP address and the load balancing IP address NIC
mapping = new InlineLoadBalancerNicMapVO(srcIp, loadBalancingIpNic.getId());
_inlineLoadBalancerNicMapDao.persist(mapping);
// On the firewall provider for the network, create a static NAT rule between the source IP
// address and the load balancing IP address
try {
applyStaticNatRuleForInlineLBRule(zone, network, revoked, srcIp, loadBalancingIpNic.getIp4Address());
} catch (ResourceUnavailableException ex) {
// Rollback db operation
_inlineLoadBalancerNicMapDao.expunge(mapping.getId());
_nicDao.expunge(loadBalancingIpNic.getId());
throw ex;
}
s_logger.debug("Created static nat rule for inline load balancer");
nic.setState(MappingState.Create);
} else {
loadBalancingIpNic = _nicDao.findById(mapping.getNicId());
}
} else {
if (mapping != null) {
// Find the NIC that the mapping refers to
loadBalancingIpNic = _nicDao.findById(mapping.getNicId());
int count = _ipAddrMgr.getRuleCountForIp(sourceIpId, Purpose.LoadBalancing, FirewallRule.State.Active);
if (count == 0) {
// On the firewall provider for the network, delete the static NAT rule between the source IP
// address and the load balancing IP address
applyStaticNatRuleForInlineLBRule(zone, network, revoked, srcIp, loadBalancingIpNic.getIp4Address());
// Delete the mapping between the source IP address and the load balancing IP address
_inlineLoadBalancerNicMapDao.expunge(mapping.getId());
// Delete the NIC
_nicDao.expunge(loadBalancingIpNic.getId());
s_logger.debug("Revoked static nat rule for inline load balancer");