@DB
public LoadBalancer createLoadBalancer(CreateLoadBalancerRuleCmd lb, boolean openFirewall)
throws NetworkRuleConflictException {
long ipId = lb.getSourceIpAddressId();
UserContext caller = UserContext.current();
int srcPortStart = lb.getSourcePortStart();
int defPortStart = lb.getDefaultPortStart();
int srcPortEnd = lb.getSourcePortEnd();
IPAddressVO ipAddr = _ipAddressDao.findById(lb.getSourceIpAddressId());
Long networkId = ipAddr.getSourceNetworkId();
// make sure ip address exists
if (ipAddr == null || !ipAddr.readyToUse()) {
throw new InvalidParameterValueException(
"Unable to create load balancer rule, invalid IP address id" + ipId);
}
_firewallMgr.validateFirewallRule(
caller.getCaller(),
ipAddr,
srcPortStart,
srcPortEnd,
lb.getProtocol(),
Purpose.LoadBalancing);
networkId = ipAddr.getAssociatedWithNetworkId();
if (networkId == null) {
throw new InvalidParameterValueException(
"Unable to create load balancer rule ; ip id="
+ ipId
+ " is not associated with any network");
}
NetworkVO network = _networkDao.findById(networkId);
_accountMgr.checkAccess(caller.getCaller(), null, ipAddr);
// verify that lb service is supported by the network
if (!_networkMgr.isServiceSupported(network.getNetworkOfferingId(), Service.Lb)) {
throw new InvalidParameterValueException(
"LB service is not supported in network id= " + networkId);
}
Transaction txn = Transaction.currentTxn();
txn.start();
LoadBalancerVO newRule =
new LoadBalancerVO(
lb.getXid(),
lb.getName(),
lb.getDescription(),
lb.getSourceIpAddressId(),
lb.getSourcePortEnd(),
lb.getDefaultPortStart(),
lb.getAlgorithm(),
network.getId(),
ipAddr.getAccountId(),
ipAddr.getDomainId());
newRule = _lbDao.persist(newRule);
if (openFirewall) {
_firewallMgr.createRuleForAllCidrs(
ipId,
caller.getCaller(),
lb.getSourcePortStart(),
lb.getSourcePortEnd(),
lb.getProtocol(),
null,
null,
newRule.getId());
}
boolean success = true;
try {
_firewallMgr.detectRulesConflict(newRule, ipAddr);
if (!_firewallDao.setStateToAdd(newRule)) {
throw new CloudRuntimeException("Unable to update the state to add for " + newRule);
}
s_logger.debug(
"Load balancer "
+ newRule.getId()
+ " for Ip address id="
+ ipId
+ ", public port "
+ srcPortStart
+ ", private port "
+ defPortStart
+ " is added successfully.");
UserContext.current().setEventDetails("Load balancer Id: " + newRule.getId());
UsageEventVO usageEvent =
new UsageEventVO(
EventTypes.EVENT_LOAD_BALANCER_CREATE,
ipAddr.getAllocatedToAccountId(),
ipAddr.getDataCenterId(),
newRule.getId(),
null);
_usageEventDao.persist(usageEvent);
txn.commit();
return newRule;
} catch (Exception e) {
success = false;
if (e instanceof NetworkRuleConflictException) {
throw (NetworkRuleConflictException) e;
}
throw new CloudRuntimeException(
"Unable to add rule for ip address id=" + newRule.getSourceIpAddressId(), e);
} finally {
if (!success && newRule != null) {
txn.start();
_firewallMgr.revokeRelatedFirewallRule(newRule.getId(), false);
_lbDao.remove(newRule.getId());
txn.commit();
}
}
}
@DB
public boolean deleteLoadBalancerRule(
long loadBalancerId, boolean apply, Account caller, long callerUserId) {
LoadBalancerVO lb = _lbDao.findById(loadBalancerId);
Transaction txn = Transaction.currentTxn();
boolean generateUsageEvent = false;
boolean success = true;
txn.start();
if (lb.getState() == FirewallRule.State.Staged) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Found a rule that is still in stage state so just removing it: " + lb);
}
generateUsageEvent = true;
} else if (lb.getState() == FirewallRule.State.Add
|| lb.getState() == FirewallRule.State.Active) {
lb.setState(FirewallRule.State.Revoke);
_lbDao.persist(lb);
generateUsageEvent = true;
}
List<LoadBalancerVMMapVO> maps = _lb2VmMapDao.listByLoadBalancerId(loadBalancerId);
if (maps != null) {
for (LoadBalancerVMMapVO map : maps) {
map.setRevoke(true);
_lb2VmMapDao.persist(map);
s_logger.debug(
"Set load balancer rule for revoke: rule id "
+ loadBalancerId
+ ", vmId "
+ map.getInstanceId());
}
}
if (generateUsageEvent) {
// Generate usage event right after all rules were marked for revoke
UsageEventVO usageEvent =
new UsageEventVO(
EventTypes.EVENT_LOAD_BALANCER_DELETE, lb.getAccountId(), 0, lb.getId(), null);
_usageEventDao.persist(usageEvent);
}
txn.commit();
if (apply) {
try {
if (!applyLoadBalancerConfig(loadBalancerId)) {
s_logger.warn("Unable to apply the load balancer config");
return false;
}
} catch (ResourceUnavailableException e) {
s_logger.warn(
"Unable to apply the load balancer config because resource is unavaliable.", e);
return false;
}
}
FirewallRuleVO relatedRule = _firewallDao.findByRelatedId(lb.getId());
if (relatedRule != null) {
s_logger.warn(
"Unable to remove firewall rule id="
+ lb.getId()
+ " as it has related firewall rule id="
+ relatedRule.getId()
+ "; leaving it in Revoke state");
success = false;
} else {
_firewallDao.remove(lb.getId());
}
_elbMgr.handleDeleteLoadBalancerRule(lb, callerUserId, caller);
if (success) {
s_logger.debug("Load balancer with id " + lb.getId() + " is removed successfully");
}
return success;
}