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cloudstack/server/src/com/cloud/network/lb/ElasticLoadBalancerManagerImpl.java

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// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.network.lb;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.agent.AgentManager;
import com.cloud.agent.AgentManager.OnError;
import com.cloud.agent.api.Answer;
import com.cloud.agent.api.StopAnswer;
import com.cloud.agent.api.check.CheckSshAnswer;
import com.cloud.agent.api.check.CheckSshCommand;
import com.cloud.agent.api.routing.LoadBalancerConfigCommand;
import com.cloud.agent.api.routing.NetworkElementCommand;
import com.cloud.agent.api.to.LoadBalancerTO;
import com.cloud.agent.manager.Commands;
import com.cloud.api.commands.CreateLoadBalancerRuleCmd;
import com.cloud.configuration.Config;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.dc.DataCenter;
import com.cloud.dc.DataCenter.NetworkType;
import com.cloud.dc.DataCenterVO;
import com.cloud.dc.Pod;
import com.cloud.dc.PodVlanMapVO;
import com.cloud.dc.Vlan.VlanType;
import com.cloud.dc.dao.ClusterDao;
import com.cloud.dc.dao.DataCenterDao;
import com.cloud.dc.dao.HostPodDao;
import com.cloud.dc.dao.PodVlanMapDao;
import com.cloud.dc.dao.VlanDao;
import com.cloud.deploy.DataCenterDeployment;
import com.cloud.deploy.DeployDestination;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.InsufficientAddressCapacityException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.InvalidParameterValueException;
import com.cloud.exception.NetworkRuleConflictException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.exception.StorageUnavailableException;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.network.ElasticLbVmMapVO;
import com.cloud.network.IPAddressVO;
import com.cloud.network.LoadBalancerVO;
import com.cloud.network.Network;
import com.cloud.network.Network.Provider;
import com.cloud.network.Network.Service;
import com.cloud.network.NetworkManager;
import com.cloud.network.NetworkVO;
import com.cloud.network.Networks.TrafficType;
import com.cloud.network.PhysicalNetworkServiceProvider;
import com.cloud.network.VirtualRouterProvider;
import com.cloud.network.VirtualRouterProvider.VirtualRouterProviderType;
import com.cloud.network.addr.PublicIp;
import com.cloud.network.dao.IPAddressDao;
import com.cloud.network.dao.LoadBalancerDao;
import com.cloud.network.dao.NetworkDao;
import com.cloud.network.dao.PhysicalNetworkServiceProviderDao;
import com.cloud.network.dao.VirtualRouterProviderDao;
import com.cloud.network.lb.LoadBalancingRule.LbDestination;
import com.cloud.network.lb.LoadBalancingRule.LbStickinessPolicy;
import com.cloud.network.lb.dao.ElasticLbVmMapDao;
import com.cloud.network.router.VirtualNetworkApplianceManager;
import com.cloud.network.router.VirtualRouter;
import com.cloud.network.router.VirtualRouter.RedundantState;
import com.cloud.network.router.VirtualRouter.Role;
import com.cloud.network.rules.FirewallRule;
import com.cloud.network.rules.FirewallRule.Purpose;
import com.cloud.network.rules.LoadBalancer;
import com.cloud.offering.ServiceOffering;
import com.cloud.offerings.NetworkOfferingVO;
import com.cloud.offerings.dao.NetworkOfferingDao;
import com.cloud.service.ServiceOfferingVO;
import com.cloud.service.dao.ServiceOfferingDao;
import com.cloud.storage.VMTemplateVO;
import com.cloud.storage.dao.VMTemplateDao;
import com.cloud.user.Account;
import com.cloud.user.AccountService;
import com.cloud.user.User;
import com.cloud.user.UserContext;
import com.cloud.user.dao.AccountDao;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.Pair;
import com.cloud.utils.component.Inject;
import com.cloud.utils.component.Manager;
import com.cloud.utils.concurrency.NamedThreadFactory;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.vm.DomainRouterVO;
import com.cloud.vm.NicProfile;
import com.cloud.vm.ReservationContext;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.VirtualMachine.State;
import com.cloud.vm.VirtualMachineGuru;
import com.cloud.vm.VirtualMachineManager;
import com.cloud.vm.VirtualMachineName;
import com.cloud.vm.VirtualMachineProfile;
import com.cloud.vm.VirtualMachineProfile.Param;
import com.cloud.vm.dao.DomainRouterDao;
@Local(value = { ElasticLoadBalancerManager.class })
public class ElasticLoadBalancerManagerImpl implements
ElasticLoadBalancerManager, Manager, VirtualMachineGuru<DomainRouterVO> {
private static final Logger s_logger = Logger
.getLogger(ElasticLoadBalancerManagerImpl.class);
@Inject
IPAddressDao _ipAddressDao;
@Inject
AgentManager _agentMgr;
@Inject
NetworkManager _networkMgr;
@Inject
LoadBalancerDao _loadBalancerDao = null;
@Inject
LoadBalancingRulesManager _lbMgr;
@Inject
VirtualNetworkApplianceManager _routerMgr;
@Inject
DomainRouterDao _routerDao = null;
@Inject
protected HostPodDao _podDao = null;
@Inject
protected ClusterDao _clusterDao;
@Inject
DataCenterDao _dcDao = null;
@Inject
protected NetworkDao _networkDao;
@Inject
protected NetworkOfferingDao _networkOfferingDao;
@Inject
VMTemplateDao _templateDao = null;
@Inject
VirtualMachineManager _itMgr;
@Inject
ConfigurationDao _configDao;
@Inject
ServiceOfferingDao _serviceOfferingDao = null;
@Inject
AccountService _accountService;
@Inject
LoadBalancerDao _lbDao;
@Inject
VlanDao _vlanDao;
@Inject
PodVlanMapDao _podVlanMapDao;
@Inject
ElasticLbVmMapDao _elbVmMapDao;
@Inject
NetworkDao _networksDao;
@Inject
AccountDao _accountDao;
@Inject
PhysicalNetworkServiceProviderDao _physicalProviderDao;
@Inject
VirtualRouterProviderDao _vrProviderDao;
String _name;
String _instance;
static final private String _elbVmNamePrefix = "l";
static final private String _systemVmType = "elbvm";
boolean _enabled;
TrafficType _frontendTrafficType = TrafficType.Guest;
Account _systemAcct;
ServiceOfferingVO _elasticLbVmOffering;
ScheduledExecutorService _gcThreadPool;
String _mgmtCidr;
String _mgmtHost;
Set<Long> _gcCandidateElbVmIds = Collections.newSetFromMap(new ConcurrentHashMap<Long,Boolean>());
int _elasticLbVmRamSize;
int _elasticLbvmCpuMHz;
int _elasticLbvmNumCpu;
private Long getPodIdForDirectIp(IPAddressVO ipAddr) {
PodVlanMapVO podVlanMaps = _podVlanMapDao.listPodVlanMapsByVlan(ipAddr.getVlanId());
if (podVlanMaps == null) {
return null;
} else {
return podVlanMaps.getPodId();
}
}
public DomainRouterVO deployLoadBalancerVM(Long networkId, IPAddressVO ipAddr, Long accountId) {
NetworkVO network = _networkDao.findById(networkId);
DataCenter dc = _dcDao.findById(network.getDataCenterId());
Long podId = getPodIdForDirectIp(ipAddr);
Pod pod = podId == null?null:_podDao.findById(podId);
Map<VirtualMachineProfile.Param, Object> params = new HashMap<VirtualMachineProfile.Param, Object>(
1);
params.put(VirtualMachineProfile.Param.ReProgramGuestNetworks, true);
Account owner = _accountService.getActiveAccountByName("system", new Long(1));
DeployDestination dest = new DeployDestination(dc, pod, null, null);
s_logger.debug("About to deploy ELB vm ");
try {
DomainRouterVO elbVm = deployELBVm(network, dest, owner, params);
if (elbVm == null) {
throw new InvalidParameterValueException("Could not deploy or find existing ELB VM");
}
s_logger.debug("Deployed ELB vm = " + elbVm);
return elbVm;
} catch (Throwable t) {
s_logger.warn("Error while deploying ELB VM: ", t);
return null;
}
}
private boolean sendCommandsToRouter(final DomainRouterVO elbVm,
Commands cmds) throws AgentUnavailableException {
Answer[] answers = null;
try {
answers = _agentMgr.send(elbVm.getHostId(), cmds);
} catch (OperationTimedoutException e) {
s_logger.warn("ELB: Timed Out", e);
throw new AgentUnavailableException(
"Unable to send commands to virtual elbVm ",
elbVm.getHostId(), e);
}
if (answers == null) {
return false;
}
if (answers.length != cmds.size()) {
return false;
}
// FIXME: Have to return state for individual command in the future
if (answers.length > 0) {
Answer ans = answers[0];
return ans.getResult();
}
return true;
}
private void createApplyLoadBalancingRulesCommands(
List<LoadBalancingRule> rules, DomainRouterVO elbVm, Commands cmds) {
LoadBalancerTO[] lbs = new LoadBalancerTO[rules.size()];
int i = 0;
for (LoadBalancingRule rule : rules) {
boolean revoked = (rule.getState()
.equals(FirewallRule.State.Revoke));
String protocol = rule.getProtocol();
String algorithm = rule.getAlgorithm();
String elbIp = _networkMgr.getIp(rule.getSourceIpAddressId()).getAddress()
.addr();
int srcPort = rule.getSourcePortStart();
List<LbDestination> destinations = rule.getDestinations();
LoadBalancerTO lb = new LoadBalancerTO(elbIp, srcPort, protocol, algorithm, revoked, false, destinations);
lbs[i++] = lb;
}
LoadBalancerConfigCommand cmd = new LoadBalancerConfigCommand(lbs,elbVm.getPublicIpAddress(),elbVm.getGuestIpAddress(),elbVm.getPrivateIpAddress());
cmd.setAccessDetail(NetworkElementCommand.ROUTER_IP,
elbVm.getPrivateIpAddress());
cmd.setAccessDetail(NetworkElementCommand.ROUTER_NAME,
elbVm.getInstanceName());
//FIXME: why are we setting attributes directly? Ick!! There should be accessors and
//the constructor should set defaults.
cmd.lbStatsVisibility = _configDao.getValue(Config.NetworkLBHaproxyStatsVisbility.key());
cmd.lbStatsUri = _configDao.getValue(Config.NetworkLBHaproxyStatsUri.key());
cmd.lbStatsAuth = _configDao.getValue(Config.NetworkLBHaproxyStatsAuth.key());
cmd.lbStatsPort = _configDao.getValue(Config.NetworkLBHaproxyStatsPort.key());
cmds.addCommand(cmd);
}
protected boolean applyLBRules(DomainRouterVO elbVm,
List<LoadBalancingRule> rules) throws ResourceUnavailableException {
Commands cmds = new Commands(OnError.Continue);
createApplyLoadBalancingRulesCommands(rules, elbVm, cmds);
// Send commands to elbVm
return sendCommandsToRouter(elbVm, cmds);
}
protected DomainRouterVO findElbVmForLb(FirewallRule lb) {//TODO: use a table to lookup
ElasticLbVmMapVO map = _elbVmMapDao.findOneByIp(lb.getSourceIpAddressId());
if (map == null) {
return null;
}
DomainRouterVO elbVm = _routerDao.findById(map.getElbVmId());
return elbVm;
}
public boolean applyLoadBalancerRules(Network network,
List<? extends FirewallRule> rules)
throws ResourceUnavailableException {
if (rules == null || rules.isEmpty()) {
return true;
}
if (rules.get(0).getPurpose() != Purpose.LoadBalancing) {
s_logger.warn("ELB: Not handling non-LB firewall rules");
return false;
}
DomainRouterVO elbVm = findElbVmForLb(rules.get(0));
if (elbVm == null) {
s_logger.warn("Unable to apply lb rules, ELB vm doesn't exist in the network "
+ network.getId());
throw new ResourceUnavailableException("Unable to apply lb rules",
DataCenter.class, network.getDataCenterId());
}
if (elbVm.getState() == State.Running) {
//resend all rules for the public ip
List<LoadBalancerVO> lbs = _lbDao.listByIpAddress(rules.get(0).getSourceIpAddressId());
List<LoadBalancingRule> lbRules = new ArrayList<LoadBalancingRule>();
for (LoadBalancerVO lb : lbs) {
List<LbDestination> dstList = _lbMgr.getExistingDestinations(lb.getId());
List<LbStickinessPolicy> policyList = _lbMgr.getStickinessPolicies(lb.getId());
LoadBalancingRule loadBalancing = new LoadBalancingRule(
lb, dstList, policyList);
lbRules.add(loadBalancing);
}
return applyLBRules(elbVm, lbRules);
} else if (elbVm.getState() == State.Stopped
|| elbVm.getState() == State.Stopping) {
s_logger.debug("ELB VM is in "
+ elbVm.getState()
+ ", so not sending apply LoadBalancing rules commands to the backend");
return true;
} else {
s_logger.warn("Unable to apply loadbalancing rules, ELB VM is not in the right state "
+ elbVm.getState());
throw new ResourceUnavailableException(
"Unable to apply loadbalancing rules, ELB VM is not in the right state",
VirtualRouter.class, elbVm.getId());
}
}
@Override
public boolean configure(String name, Map<String, Object> params)
throws ConfigurationException {
_name = name;
final Map<String, String> configs = _configDao.getConfiguration("AgentManager", params);
_systemAcct = _accountService.getSystemAccount();
_instance = configs.get("instance.name");
if (_instance == null) {
_instance = "VM";
}
_mgmtCidr = _configDao.getValue(Config.ManagementNetwork.key());
_mgmtHost = _configDao.getValue(Config.ManagementHostIPAdr.key());
boolean useLocalStorage = Boolean.parseBoolean(configs.get(Config.SystemVMUseLocalStorage.key()));
_elasticLbVmRamSize = NumbersUtil.parseInt(configs.get(Config.ElasticLoadBalancerVmMemory.key()), DEFAULT_ELB_VM_RAMSIZE);
_elasticLbvmCpuMHz = NumbersUtil.parseInt(configs.get(Config.ElasticLoadBalancerVmCpuMhz.key()), DEFAULT_ELB_VM_CPU_MHZ);
_elasticLbvmNumCpu = NumbersUtil.parseInt(configs.get(Config.ElasticLoadBalancerVmNumVcpu.key()), 1);
_elasticLbVmOffering = new ServiceOfferingVO("System Offering For Elastic LB VM", _elasticLbvmNumCpu,
_elasticLbVmRamSize, _elasticLbvmCpuMHz, 0, 0, true, null, useLocalStorage,
true, null, true, VirtualMachine.Type.ElasticLoadBalancerVm, true);
_elasticLbVmOffering.setUniqueName(ServiceOffering.elbVmDefaultOffUniqueName);
_elasticLbVmOffering = _serviceOfferingDao.persistSystemServiceOffering(_elasticLbVmOffering);
String enabled = _configDao.getValue(Config.ElasticLoadBalancerEnabled.key());
_enabled = (enabled == null) ? false: Boolean.parseBoolean(enabled);
s_logger.info("Elastic Load balancer enabled: " + _enabled);
if (_enabled) {
String traffType = _configDao.getValue(Config.ElasticLoadBalancerNetwork.key());
if ("guest".equalsIgnoreCase(traffType)) {
_frontendTrafficType = TrafficType.Guest;
} else if ("public".equalsIgnoreCase(traffType)){
_frontendTrafficType = TrafficType.Public;
} else
throw new ConfigurationException("ELB: Traffic type for front end of load balancer has to be guest or public; found : " + traffType);
s_logger.info("ELB: Elastic Load Balancer: will balance on " + traffType );
int gcIntervalMinutes = NumbersUtil.parseInt(configs.get(Config.ElasticLoadBalancerVmGcInterval.key()), 5);
if (gcIntervalMinutes < 5)
gcIntervalMinutes = 5;
s_logger.info("ELB: Elastic Load Balancer: scheduling GC to run every " + gcIntervalMinutes + " minutes" );
_gcThreadPool = Executors.newScheduledThreadPool(1, new NamedThreadFactory("ELBVM-GC"));
_gcThreadPool.scheduleAtFixedRate(new CleanupThread(), gcIntervalMinutes, gcIntervalMinutes, TimeUnit.MINUTES);
_itMgr.registerGuru(VirtualMachine.Type.ElasticLoadBalancerVm, this);
}
return true;
}
@Override
public boolean start() {
return true;
}
@Override
public boolean stop() {
return true;
}
@Override
public String getName() {
return _name;
}
private DomainRouterVO findELBVmWithCapacity(Network guestNetwork, IPAddressVO ipAddr) {
List<DomainRouterVO> unusedElbVms = _elbVmMapDao.listUnusedElbVms();
if (unusedElbVms.size() > 0) {
List<DomainRouterVO> candidateVms = new ArrayList<DomainRouterVO>();
for (DomainRouterVO candidateVm: unusedElbVms) {
if (candidateVm.getPodIdToDeployIn() == getPodIdForDirectIp(ipAddr))
candidateVms.add(candidateVm);
}
return candidateVms.size()==0?null:candidateVms.get(new Random().nextInt(candidateVms.size()));
}
return null;
}
public DomainRouterVO deployELBVm(Network guestNetwork, DeployDestination dest, Account owner, Map<Param, Object> params) throws
ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
long dcId = dest.getDataCenter().getId();
// lock guest network
Long guestNetworkId = guestNetwork.getId();
guestNetwork = _networkDao.acquireInLockTable(guestNetworkId);
if (guestNetwork == null) {
throw new ConcurrentOperationException("Unable to acquire network lock: " + guestNetworkId);
}
try {
if (_networkMgr.isNetworkSystem(guestNetwork) || guestNetwork.getGuestType() == Network.GuestType.Shared) {
owner = _accountService.getSystemAccount();
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Starting a ELB vm for network configurations: " + guestNetwork + " in " + dest);
}
assert guestNetwork.getState() == Network.State.Implemented
|| guestNetwork.getState() == Network.State.Setup
|| guestNetwork.getState() == Network.State.Implementing
: "Network is not yet fully implemented: "+ guestNetwork;
DataCenterDeployment plan = null;
DomainRouterVO elbVm = null;
plan = new DataCenterDeployment(dcId, dest.getPod().getId(), null, null, null, null);
if (elbVm == null) {
long id = _routerDao.getNextInSequence(Long.class, "id");
if (s_logger.isDebugEnabled()) {
s_logger.debug("Creating the ELB vm " + id);
}
List<NetworkOfferingVO> offerings = _networkMgr.getSystemAccountNetworkOfferings(NetworkOfferingVO.SystemControlNetwork);
NetworkOfferingVO controlOffering = offerings.get(0);
NetworkVO controlConfig = _networkMgr.setupNetwork(_systemAcct, controlOffering, plan, null, null, false).get(0);
List<Pair<NetworkVO, NicProfile>> networks = new ArrayList<Pair<NetworkVO, NicProfile>>(2);
NicProfile guestNic = new NicProfile();
guestNic.setDefaultNic(true);
networks.add(new Pair<NetworkVO, NicProfile>((NetworkVO) guestNetwork, guestNic));
networks.add(new Pair<NetworkVO, NicProfile>(controlConfig, null));
VMTemplateVO template = _templateDao.findSystemVMTemplate(dcId);
String typeString = "ElasticLoadBalancerVm";
Long physicalNetworkId = _networkMgr.getPhysicalNetworkId(guestNetwork);
PhysicalNetworkServiceProvider provider = _physicalProviderDao.findByServiceProvider(physicalNetworkId, typeString);
if (provider == null) {
throw new CloudRuntimeException("Cannot find service provider " + typeString + " in physical network " + physicalNetworkId);
}
VirtualRouterProvider vrProvider = _vrProviderDao.findByNspIdAndType(provider.getId(), VirtualRouterProviderType.ElasticLoadBalancerVm);
if (vrProvider == null) {
throw new CloudRuntimeException("Cannot find virtual router provider " + typeString + " as service provider " + provider.getId());
}
elbVm = new DomainRouterVO(id, _elasticLbVmOffering.getId(), vrProvider.getId(), VirtualMachineName.getSystemVmName(id, _instance, _elbVmNamePrefix), template.getId(), template.getHypervisorType(),
template.getGuestOSId(), owner.getDomainId(), owner.getId(), false, 0, false, RedundantState.UNKNOWN, _elasticLbVmOffering.getOfferHA(), false, VirtualMachine.Type.ElasticLoadBalancerVm);
elbVm.setRole(Role.LB);
elbVm = _itMgr.allocate(elbVm, template, _elasticLbVmOffering, networks, plan, null, owner);
//TODO: create usage stats
}
State state = elbVm.getState();
if (state != State.Running) {
elbVm = this.start(elbVm, _accountService.getSystemUser(), _accountService.getSystemAccount(), params);
}
return elbVm;
} finally {
_networkDao.releaseFromLockTable(guestNetworkId);
}
}
private DomainRouterVO start(DomainRouterVO elbVm, User user, Account caller, Map<Param, Object> params) throws StorageUnavailableException, InsufficientCapacityException,
ConcurrentOperationException, ResourceUnavailableException {
s_logger.debug("Starting ELB VM " + elbVm);
if (_itMgr.start(elbVm, params, user, caller) != null) {
return _routerDao.findById(elbVm.getId());
} else {
return null;
}
}
private DomainRouterVO stop(DomainRouterVO elbVm, boolean forced, User user, Account caller) throws ConcurrentOperationException, ResourceUnavailableException {
s_logger.debug("Stopping ELB vm " + elbVm);
try {
if (_itMgr.advanceStop( elbVm, forced, user, caller)) {
return _routerDao.findById(elbVm.getId());
} else {
return null;
}
} catch (OperationTimedoutException e) {
throw new CloudRuntimeException("Unable to stop " + elbVm, e);
}
}
protected List<LoadBalancerVO> findExistingLoadBalancers(String lbName, Long ipId, Long accountId, Long domainId, Integer publicPort) {
SearchBuilder<LoadBalancerVO> sb = _lbDao.createSearchBuilder();
sb.and("name", sb.entity().getName(), SearchCriteria.Op.EQ);
sb.and("accountId", sb.entity().getAccountId(), SearchCriteria.Op.EQ);
sb.and("publicPort", sb.entity().getSourcePortStart(), SearchCriteria.Op.EQ);
if (ipId != null) {
sb.and("sourceIpAddress", sb.entity().getSourceIpAddressId(), SearchCriteria.Op.EQ);
}
if (domainId != null) {
sb.and("domainId", sb.entity().getDomainId(), SearchCriteria.Op.EQ);
}
if (publicPort != null) {
sb.and("publicPort", sb.entity().getSourcePortStart(), SearchCriteria.Op.EQ);
}
SearchCriteria<LoadBalancerVO> sc = sb.create();
sc.setParameters("name", lbName);
sc.setParameters("accountId", accountId);
if (ipId != null) {
sc.setParameters("sourceIpAddress", ipId);
}
if (domainId != null) {
sc.setParameters("domainId",domainId);
}
if (publicPort != null) {
sc.setParameters("publicPort", publicPort);
}
List<LoadBalancerVO> lbs = _lbDao.search(sc, null);
return lbs == null || lbs.size()==0 ? null: lbs;
}
@DB
public PublicIp allocDirectIp(Account account, long guestNetworkId) throws InsufficientAddressCapacityException {
Network frontEndNetwork = _networkMgr.getNetwork(guestNetworkId);
Transaction txn = Transaction.currentTxn();
txn.start();
PublicIp ip = _networkMgr.assignPublicIpAddress(frontEndNetwork.getDataCenterId(), null, account, VlanType.DirectAttached, frontEndNetwork.getId(), null, true);
IPAddressVO ipvo = _ipAddressDao.findById(ip.getId());
ipvo.setAssociatedWithNetworkId(frontEndNetwork.getId());
_ipAddressDao.update(ipvo.getId(), ipvo);
txn.commit();
s_logger.info("Acquired frontend IP for ELB " + ip);
return ip;
}
public void releaseIp(long ipId, long userId, Account caller) {
s_logger.info("ELB: Release public IP for loadbalancing " + ipId);
IPAddressVO ipvo = _ipAddressDao.findById(ipId);
ipvo.setAssociatedWithNetworkId(null);
_ipAddressDao.update(ipvo.getId(), ipvo);
_networkMgr.releasePublicIpAddress(ipId, userId, caller);
_ipAddressDao.unassignIpAddress(ipId);
}
@Override
@DB
public LoadBalancer handleCreateLoadBalancerRule(CreateLoadBalancerRuleCmd lb, Account account, long networkId) throws InsufficientAddressCapacityException, NetworkRuleConflictException {
//this part of code is executed when the LB provider is Elastic Load Balancer vm
if (!_networkMgr.isProviderSupportServiceInNetwork(lb.getNetworkId(), Service.Lb, Provider.ElasticLoadBalancerVm)) {
return null;
}
Long ipId = lb.getSourceIpAddressId();
if (ipId != null) {
return null;
}
boolean newIp = false;
account = _accountDao.acquireInLockTable(account.getId());
if (account == null) {
s_logger.warn("ELB: CreateLoadBalancer: Failed to acquire lock on account");
throw new CloudRuntimeException("Failed to acquire lock on account");
}
try {
List<LoadBalancerVO> existingLbs = findExistingLoadBalancers(lb.getName(), lb.getSourceIpAddressId(), lb.getAccountId(), lb.getDomainId(), lb.getSourcePortStart());
if (existingLbs == null ){
existingLbs = findExistingLoadBalancers(lb.getName(), lb.getSourceIpAddressId(), lb.getAccountId(), lb.getDomainId(), null);
if (existingLbs == null) {
if (lb.getSourceIpAddressId() != null) {
existingLbs = findExistingLoadBalancers(lb.getName(), null, lb.getAccountId(), lb.getDomainId(), null);
if (existingLbs != null) {
throw new InvalidParameterValueException("Supplied LB name " + lb.getName() + " is not associated with IP " + lb.getSourceIpAddressId() );
}
} else {
s_logger.debug("Could not find any existing frontend ips for this account for this LB rule, acquiring a new frontent IP for ELB");
PublicIp ip = allocDirectIp(account, networkId);
ipId = ip.getId();
newIp = true;
}
} else {
ipId = existingLbs.get(0).getSourceIpAddressId();
s_logger.debug("ELB: Found existing frontend ip for this account for this LB rule " + ipId);
}
} else {
s_logger.warn("ELB: Found existing load balancers matching requested new LB");
throw new NetworkRuleConflictException("ELB: Found existing load balancers matching requested new LB");
}
Network network = _networkMgr.getNetwork(networkId);
IPAddressVO ipAddr = _ipAddressDao.findById(ipId);
LoadBalancer result = null;
try {
lb.setSourceIpAddressId(ipId);
result = _lbMgr.createLoadBalancer(lb, false);
} catch (NetworkRuleConflictException e) {
s_logger.warn("Failed to create LB rule, not continuing with ELB deployment");
if (newIp) {
releaseIp(ipId, UserContext.current().getCallerUserId(), account);
}
throw e;
}
DomainRouterVO elbVm = null;
if (existingLbs == null) {
elbVm = findELBVmWithCapacity(network, ipAddr);
if (elbVm == null) {
elbVm = deployLoadBalancerVM(networkId, ipAddr, account.getId());
if (elbVm == null) {
s_logger.warn("Failed to deploy a new ELB vm for ip " + ipAddr + " in network " + network + "lb name=" + lb.getName());
if (newIp)
releaseIp(ipId, UserContext.current().getCallerUserId(), account);
}
}
} else {
ElasticLbVmMapVO elbVmMap = _elbVmMapDao.findOneByIp(ipId);
if (elbVmMap != null) {
elbVm = _routerDao.findById(elbVmMap.getElbVmId());
}
}
if (elbVm == null) {
s_logger.warn("No ELB VM can be found or deployed");
s_logger.warn("Deleting LB since we failed to deploy ELB VM");
_lbDao.remove(result.getId());
return null;
}
ElasticLbVmMapVO mapping = new ElasticLbVmMapVO(ipId, elbVm.getId(), result.getId());
_elbVmMapDao.persist(mapping);
return result;
} finally {
if (account != null) {
_accountDao.releaseFromLockTable(account.getId());
}
}
}
void garbageCollectUnusedElbVms() {
List<DomainRouterVO> unusedElbVms = _elbVmMapDao.listUnusedElbVms();
if (unusedElbVms != null && unusedElbVms.size() > 0)
s_logger.info("Found " + unusedElbVms.size() + " unused ELB vms");
Set<Long> currentGcCandidates = new HashSet<Long>();
for (DomainRouterVO elbVm: unusedElbVms) {
currentGcCandidates.add(elbVm.getId());
}
_gcCandidateElbVmIds.retainAll(currentGcCandidates);
currentGcCandidates.removeAll(_gcCandidateElbVmIds);
User user = _accountService.getSystemUser();
for (Long elbVmId : _gcCandidateElbVmIds) {
DomainRouterVO elbVm = _routerDao.findById(elbVmId);
boolean gceed = false;
try {
s_logger.info("Attempting to stop ELB VM: " + elbVm);
stop(elbVm, true, user, _systemAcct);
gceed = true;
} catch (ConcurrentOperationException e) {
s_logger.warn("Unable to stop unused ELB vm " + elbVm + " due to ", e);
} catch (ResourceUnavailableException e) {
s_logger.warn("Unable to stop unused ELB vm " + elbVm + " due to ", e);
continue;
}
if (gceed) {
try {
s_logger.info("Attempting to destroy ELB VM: " + elbVm);
_itMgr.expunge(elbVm, user, _systemAcct);
} catch (ResourceUnavailableException e) {
s_logger.warn("Unable to destroy unused ELB vm " + elbVm + " due to ", e);
gceed = false;
}
}
if (!gceed) {
currentGcCandidates.add(elbVm.getId());
}
}
_gcCandidateElbVmIds = currentGcCandidates;
}
public class CleanupThread implements Runnable {
@Override
public void run() {
garbageCollectUnusedElbVms();
}
CleanupThread() {
}
}
@Override
public void handleDeleteLoadBalancerRule(LoadBalancer lb, long userId, Account caller) {
if (!_enabled) {
return;
}
List<LoadBalancerVO> remainingLbs = _loadBalancerDao.listByIpAddress(lb.getSourceIpAddressId());
if (remainingLbs.size() == 0) {
s_logger.debug("ELB mgr: releasing ip " + lb.getSourceIpAddressId() + " since no LB rules remain for this ip address");
releaseIp(lb.getSourceIpAddressId(), userId, caller);
}
}
@Override
public DomainRouterVO findByName(String name) {
if (!VirtualMachineName.isValidSystemVmName(name, _instance, _elbVmNamePrefix)) {
return null;
}
return _routerDao.findById(VirtualMachineName.getSystemVmId(name));
}
@Override
public DomainRouterVO findById(long id) {
return _routerDao.findById(id);
}
@Override
public DomainRouterVO persist(DomainRouterVO elbVm) {
return _routerDao.persist(elbVm);
}
@Override
public boolean finalizeVirtualMachineProfile(VirtualMachineProfile<DomainRouterVO> profile, DeployDestination dest, ReservationContext context) {
DomainRouterVO elbVm = profile.getVirtualMachine();
List<NicProfile> elbNics = profile.getNics();
Long guestNtwkId = null;
for (NicProfile routerNic : elbNics) {
if (routerNic.getTrafficType() == TrafficType.Guest) {
guestNtwkId = routerNic.getNetworkId();
break;
}
}
NetworkVO guestNetwork = _networkDao.findById(guestNtwkId);
DataCenter dc = dest.getDataCenter();
StringBuilder buf = profile.getBootArgsBuilder();
buf.append(" template=domP type=" + _systemVmType);
buf.append(" name=").append(profile.getHostName());
NicProfile controlNic = null;
String defaultDns1 = null;
String defaultDns2 = null;
for (NicProfile nic : profile.getNics()) {
int deviceId = nic.getDeviceId();
buf.append(" eth").append(deviceId).append("ip=").append(nic.getIp4Address());
buf.append(" eth").append(deviceId).append("mask=").append(nic.getNetmask());
if (nic.isDefaultNic()) {
buf.append(" gateway=").append(nic.getGateway());
defaultDns1 = nic.getDns1();
defaultDns2 = nic.getDns2();
}
if (nic.getTrafficType() == TrafficType.Management) {
buf.append(" localgw=").append(dest.getPod().getGateway());
} else if (nic.getTrafficType() == TrafficType.Control) {
// control command is sent over management network in VMware
if (dest.getHost().getHypervisorType() == HypervisorType.VMware) {
if (s_logger.isInfoEnabled()) {
s_logger.info("Check if we need to add management server explicit route to ELB vm. pod cidr: " + dest.getPod().getCidrAddress() + "/" + dest.getPod().getCidrSize()
+ ", pod gateway: " + dest.getPod().getGateway() + ", management host: " + _mgmtHost);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Added management server explicit route to ELB vm.");
}
// always add management explicit route, for basic networking setup
buf.append(" mgmtcidr=").append(_mgmtCidr);
buf.append(" localgw=").append(dest.getPod().getGateway());
if (dc.getNetworkType() == NetworkType.Basic) {
// ask elb vm to setup SSH on guest network
buf.append(" sshonguest=true");
}
}
controlNic = nic;
}
}
String domain = guestNetwork.getNetworkDomain();
if (domain != null) {
buf.append(" domain=" + domain);
}
buf.append(" dns1=").append(defaultDns1);
if (defaultDns2 != null) {
buf.append(" dns2=").append(defaultDns2);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Boot Args for " + profile + ": " + buf.toString());
}
if (controlNic == null) {
throw new CloudRuntimeException("Didn't start a control port");
}
return true;
}
@Override
public boolean finalizeDeployment(Commands cmds, VirtualMachineProfile<DomainRouterVO> profile, DeployDestination dest, ReservationContext context) throws ResourceUnavailableException {
DomainRouterVO elbVm = profile.getVirtualMachine();
List<NicProfile> nics = profile.getNics();
for (NicProfile nic : nics) {
if (nic.getTrafficType() == TrafficType.Public) {
elbVm.setPublicIpAddress(nic.getIp4Address());
elbVm.setPublicNetmask(nic.getNetmask());
elbVm.setPublicMacAddress(nic.getMacAddress());
} else if (nic.getTrafficType() == TrafficType.Guest) {
elbVm.setGuestIpAddress(nic.getIp4Address());
} else if (nic.getTrafficType() == TrafficType.Control) {
elbVm.setPrivateIpAddress(nic.getIp4Address());
elbVm.setPrivateMacAddress(nic.getMacAddress());
}
}
_routerDao.update(elbVm.getId(), elbVm);
finalizeCommandsOnStart(cmds, profile);
return true;
}
@Override
public boolean finalizeStart(VirtualMachineProfile<DomainRouterVO> profile, long hostId, Commands cmds, ReservationContext context) {
CheckSshAnswer answer = (CheckSshAnswer) cmds.getAnswer("checkSsh");
if (answer == null || !answer.getResult()) {
s_logger.warn("Unable to ssh to the ELB VM: " + answer.getDetails());
return false;
}
return true;
}
@Override
public boolean finalizeCommandsOnStart(Commands cmds, VirtualMachineProfile<DomainRouterVO> profile) {
DomainRouterVO elbVm = profile.getVirtualMachine();
DataCenterVO dcVo = _dcDao.findById(elbVm.getDataCenterIdToDeployIn());
NicProfile controlNic = null;
if(profile.getHypervisorType() == HypervisorType.VMware && dcVo.getNetworkType() == NetworkType.Basic) {
// TODO this is a ugly to test hypervisor type here
// for basic network mode, we will use the guest NIC for control NIC
for (NicProfile nic : profile.getNics()) {
if (nic.getTrafficType() == TrafficType.Guest && nic.getIp4Address() != null) {
controlNic = nic;
}
}
} else {
for (NicProfile nic : profile.getNics()) {
if (nic.getTrafficType() == TrafficType.Control && nic.getIp4Address() != null) {
controlNic = nic;
}
}
}
if (controlNic == null) {
s_logger.error("Control network doesn't exist for the ELB vm " + elbVm);
return false;
}
cmds.addCommand("checkSsh", new CheckSshCommand(profile.getInstanceName(), controlNic.getIp4Address(), 3922));
// Re-apply load balancing rules
List<LoadBalancerVO> lbs = _elbVmMapDao.listLbsForElbVm(elbVm.getId());
List<LoadBalancingRule> lbRules = new ArrayList<LoadBalancingRule>();
for (LoadBalancerVO lb : lbs) {
List<LbDestination> dstList = _lbMgr.getExistingDestinations(lb.getId());
List<LbStickinessPolicy> policyList = _lbMgr.getStickinessPolicies(lb.getId());
LoadBalancingRule loadBalancing = new LoadBalancingRule(lb, dstList, policyList);
lbRules.add(loadBalancing);
}
s_logger.debug("Found " + lbRules.size() + " load balancing rule(s) to apply as a part of ELB vm " + elbVm + " start.");
if (!lbRules.isEmpty()) {
createApplyLoadBalancingRulesCommands(lbRules, elbVm, cmds);
}
return true;
}
@Override
public void finalizeStop(VirtualMachineProfile<DomainRouterVO> profile, StopAnswer answer) {
if (answer != null) {
VMInstanceVO vm = profile.getVirtualMachine();
DomainRouterVO elbVm = _routerDao.findById(vm.getId());
processStopOrRebootAnswer(elbVm, answer);
}
}
public void processStopOrRebootAnswer(final DomainRouterVO elbVm, Answer answer) {
//TODO: process network usage stats
}
@Override
public void finalizeExpunge(DomainRouterVO vm) {
// no-op
}
@Override
public Long convertToId(String vmName) {
if (!VirtualMachineName.isValidSystemVmName(vmName, _instance, _elbVmNamePrefix)) {
return null;
}
return VirtualMachineName.getSystemVmId(vmName);
}
}
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