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cloudstack/server/src/com/cloud/vm/VirtualMachineManagerImpl.java

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/**
* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
*
* This software is licensed under the GNU General Public License v3 or later.
*
* It is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package com.cloud.vm;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
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.CheckVirtualMachineAnswer;
import com.cloud.agent.api.CheckVirtualMachineCommand;
import com.cloud.agent.api.Command;
import com.cloud.agent.api.MigrateAnswer;
import com.cloud.agent.api.MigrateCommand;
import com.cloud.agent.api.PrepareForMigrationAnswer;
import com.cloud.agent.api.PrepareForMigrationCommand;
import com.cloud.agent.api.RebootAnswer;
import com.cloud.agent.api.RebootCommand;
import com.cloud.agent.api.StartAnswer;
import com.cloud.agent.api.StartCommand;
import com.cloud.agent.api.StopAnswer;
import com.cloud.agent.api.StopCommand;
import com.cloud.agent.api.to.VirtualMachineTO;
import com.cloud.agent.manager.Commands;
import com.cloud.alert.AlertManager;
import com.cloud.capacity.CapacityManager;
import com.cloud.cluster.ClusterManager;
import com.cloud.configuration.Config;
import com.cloud.configuration.ConfigurationManager;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.consoleproxy.ConsoleProxyManager;
import com.cloud.dc.DataCenter;
import com.cloud.dc.HostPodVO;
import com.cloud.deploy.DataCenterDeployment;
import com.cloud.deploy.DeployDestination;
import com.cloud.deploy.DeploymentPlan;
import com.cloud.deploy.DeploymentPlanner;
import com.cloud.deploy.DeploymentPlanner.ExcludeList;
import com.cloud.domain.dao.DomainDao;
import com.cloud.event.EventTypes;
import com.cloud.event.UsageEventVO;
import com.cloud.event.dao.UsageEventDao;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.InsufficientServerCapacityException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.host.Host;
import com.cloud.host.dao.HostDao;
import com.cloud.hypervisor.HypervisorGuru;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.network.NetworkManager;
import com.cloud.network.NetworkVO;
import com.cloud.org.Cluster;
import com.cloud.service.ServiceOfferingVO;
import com.cloud.service.dao.ServiceOfferingDao;
import com.cloud.storage.DiskOfferingVO;
import com.cloud.storage.StorageManager;
import com.cloud.storage.VMTemplateVO;
import com.cloud.storage.Volume;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.Volume.VolumeType;
import com.cloud.storage.dao.GuestOSCategoryDao;
import com.cloud.storage.dao.GuestOSDao;
import com.cloud.storage.dao.VMTemplateDao;
import com.cloud.storage.dao.VolumeDao;
import com.cloud.user.Account;
import com.cloud.user.AccountManager;
import com.cloud.user.User;
import com.cloud.user.dao.AccountDao;
import com.cloud.user.dao.UserDao;
import com.cloud.utils.Journal;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.Pair;
import com.cloud.utils.Ternary;
import com.cloud.utils.component.Adapters;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.utils.component.Inject;
import com.cloud.utils.concurrency.NamedThreadFactory;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.fsm.StateListener;
import com.cloud.utils.fsm.StateMachine2;
import com.cloud.vm.ItWorkVO.Step;
import com.cloud.vm.VirtualMachine.Event;
import com.cloud.vm.VirtualMachine.State;
import com.cloud.vm.dao.ConsoleProxyDao;
import com.cloud.vm.dao.DomainRouterDao;
import com.cloud.vm.dao.NicDao;
import com.cloud.vm.dao.SecondaryStorageVmDao;
import com.cloud.vm.dao.UserVmDao;
import com.cloud.vm.dao.VMInstanceDao;
@Local(value=VirtualMachineManager.class)
public class VirtualMachineManagerImpl implements VirtualMachineManager, StateListener<State, VirtualMachine.Event, VirtualMachine> {
private static final Logger s_logger = Logger.getLogger(VirtualMachineManagerImpl.class);
String _name;
@Inject protected StorageManager _storageMgr;
@Inject protected NetworkManager _networkMgr;
@Inject protected AgentManager _agentMgr;
@Inject protected VMInstanceDao _vmDao;
@Inject protected ServiceOfferingDao _offeringDao;
@Inject protected VMTemplateDao _templateDao;
@Inject protected UserDao _userDao;
@Inject protected AccountDao _accountDao;
@Inject protected DomainDao _domainDao;
@Inject protected ClusterManager _clusterMgr;
@Inject protected ItWorkDao _workDao;
@Inject protected UserVmDao _userVmDao;
@Inject protected DomainRouterDao _routerDao;
@Inject protected ConsoleProxyDao _consoleDao;
@Inject protected SecondaryStorageVmDao _secondaryDao;
@Inject protected UsageEventDao _usageEventDao;
@Inject protected NicDao _nicsDao;
@Inject protected AccountManager _accountMgr;
@Inject protected HostDao _hostDao;
@Inject protected AlertManager _alertMgr;
@Inject protected GuestOSCategoryDao _guestOsCategoryDao;
@Inject protected GuestOSDao _guestOsDao;
@Inject protected VolumeDao _volsDao;
@Inject protected ConsoleProxyManager _consoleProxyMgr;
@Inject protected ConfigurationManager _configMgr;
@Inject protected CapacityManager _capacityMgr;
@Inject(adapter=DeploymentPlanner.class)
protected Adapters<DeploymentPlanner> _planners;
Map<VirtualMachine.Type, VirtualMachineGuru<? extends VMInstanceVO>> _vmGurus = new HashMap<VirtualMachine.Type, VirtualMachineGuru<? extends VMInstanceVO>>();
Map<HypervisorType, HypervisorGuru> _hvGurus = new HashMap<HypervisorType, HypervisorGuru>();
protected StateMachine2<State, VirtualMachine.Event, VirtualMachine> _stateMachine;
ScheduledExecutorService _executor = null;
protected int _retry;
protected long _nodeId;
protected long _cleanupWait;
protected long _cleanupInterval;
protected long _cancelWait;
protected long _opWaitInterval;
protected int _lockStateRetry;
@Override
public <T extends VMInstanceVO> void registerGuru(VirtualMachine.Type type, VirtualMachineGuru<T> guru) {
synchronized(_vmGurus) {
_vmGurus.put(type, guru);
}
}
@Override @DB
public <T extends VMInstanceVO> T allocate(T vm,
VMTemplateVO template,
ServiceOfferingVO serviceOffering,
Pair<? extends DiskOfferingVO, Long> rootDiskOffering,
List<Pair<DiskOfferingVO, Long>> dataDiskOfferings,
List<Pair<NetworkVO, NicProfile>> networks,
Map<VirtualMachineProfile.Param, Object> params,
DeploymentPlan plan,
HypervisorType hyperType,
Account owner) throws InsufficientCapacityException {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocating entries for VM: " + vm);
}
VirtualMachineProfileImpl<T> vmProfile = new VirtualMachineProfileImpl<T>(vm, template, serviceOffering, owner, params);
vm.setDataCenterId(plan.getDataCenterId());
if (plan.getPodId() != null) {
vm.setPodId(plan.getPodId());
}
assert (plan.getClusterId() == null && plan.getPoolId() == null) : "We currently don't support cluster and pool preset yet";
@SuppressWarnings("unchecked")
VirtualMachineGuru<T> guru = (VirtualMachineGuru<T>)_vmGurus.get(vm.getType());
Transaction txn = Transaction.currentTxn();
txn.start();
vm = guru.persist(vm);
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocating nics for " + vm);
}
try {
_networkMgr.allocate(vmProfile, networks);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Concurrent operation while trying to allocate resources for the VM", e);
}
if (dataDiskOfferings == null) {
dataDiskOfferings = new ArrayList<Pair<DiskOfferingVO, Long>>(0);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocaing disks for " + vm);
}
if (template.getFormat() == ImageFormat.ISO) {
_storageMgr.allocateRawVolume(VolumeType.ROOT, "ROOT-" + vm.getId(), rootDiskOffering.first(), rootDiskOffering.second(), vm, owner);
} else {
_storageMgr.allocateTemplatedVolume(VolumeType.ROOT, "ROOT-" + vm.getId(), rootDiskOffering.first(), template, vm, owner);
}
for (Pair<DiskOfferingVO, Long> offering : dataDiskOfferings) {
_storageMgr.allocateRawVolume(VolumeType.DATADISK, "DATA-" + vm.getId(), offering.first(), offering.second(), vm, owner);
}
txn.commit();
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocation completed for VM: " + vm);
}
return vm;
}
protected void reserveNics(VirtualMachineProfile<? extends VMInstanceVO> vmProfile, DeployDestination dest, ReservationContext context) throws InsufficientCapacityException, ConcurrentOperationException, ResourceUnavailableException {
// List<NicVO> nics = _nicsDao.listBy(vmProfile.getId());
// for (NicVO nic : nics) {
// Pair<NetworkGuru, NetworkVO> implemented = _networkMgr.implementNetwork(nic.getNetworkId(), dest, context);
// NetworkGuru concierge = implemented.first();
// NetworkVO network = implemented.second();
// NicProfile profile = null;
// if (nic.getReservationStrategy() == ReservationStrategy.Start) {
// nic.setState(Resource.State.Reserving);
// nic.setReservationId(context.getReservationId());
// _nicsDao.update(nic.getId(), nic);
// URI broadcastUri = nic.getBroadcastUri();
// if (broadcastUri == null) {
// network.getBroadcastUri();
// }
//
// URI isolationUri = nic.getIsolationUri();
//
// profile = new NicProfile(nic, network, broadcastUri, isolationUri);
// concierge.reserve(profile, network, vmProfile, dest, context);
// nic.setIp4Address(profile.getIp4Address());
// nic.setIp6Address(profile.getIp6Address());
// nic.setMacAddress(profile.getMacAddress());
// nic.setIsolationUri(profile.getIsolationUri());
// nic.setBroadcastUri(profile.getBroadCastUri());
// nic.setReserver(concierge.getName());
// nic.setState(Resource.State.Reserved);
// nic.setNetmask(profile.getNetmask());
// nic.setGateway(profile.getGateway());
// nic.setAddressFormat(profile.getFormat());
// _nicsDao.update(nic.getId(), nic);
// } else {
// profile = new NicProfile(nic, network, nic.getBroadcastUri(), nic.getIsolationUri());
// }
//
// for (NetworkElement element : _networkElements) {
// if (s_logger.isDebugEnabled()) {
// s_logger.debug("Asking " + element.getName() + " to prepare for " + nic);
// }
// element.prepare(network, profile, vmProfile, dest, context);
// }
//
// vmProfile.addNic(profile);
// _networksDao.changeActiveNicsBy(network.getId(), 1);
// }
}
protected void prepareNics(VirtualMachineProfile<? extends VMInstanceVO> vmProfile, DeployDestination dest, ReservationContext context) {
}
@Override
public <T extends VMInstanceVO> T allocate(T vm,
VMTemplateVO template,
ServiceOfferingVO serviceOffering,
Long rootSize,
Pair<DiskOfferingVO, Long> dataDiskOffering,
List<Pair<NetworkVO, NicProfile>> networks,
DeploymentPlan plan,
HypervisorType hyperType,
Account owner) throws InsufficientCapacityException {
List<Pair<DiskOfferingVO, Long>> diskOfferings = new ArrayList<Pair<DiskOfferingVO, Long>>(1);
if (dataDiskOffering != null) {
diskOfferings.add(dataDiskOffering);
}
return allocate(vm, template, serviceOffering, new Pair<DiskOfferingVO, Long>(serviceOffering, rootSize), diskOfferings, networks, null, plan, hyperType, owner);
}
@Override
public <T extends VMInstanceVO> T allocate(T vm,
VMTemplateVO template,
ServiceOfferingVO serviceOffering,
List<Pair<NetworkVO, NicProfile>> networks,
DeploymentPlan plan,
HypervisorType hyperType,
Account owner) throws InsufficientCapacityException {
return allocate(vm, template, serviceOffering, new Pair<DiskOfferingVO, Long>(serviceOffering, null), null, networks, null, plan, hyperType, owner);
}
@SuppressWarnings("unchecked")
private <T extends VMInstanceVO> VirtualMachineGuru<T> getVmGuru(T vm) {
return (VirtualMachineGuru<T>)_vmGurus.get(vm.getType());
}
@Override
public <T extends VMInstanceVO> boolean expunge(T vm, User caller, Account account) throws ResourceUnavailableException {
try {
if (advanceExpunge(vm, caller, account)) {
//Mark vms as removed
remove(vm, _accountMgr.getSystemUser(), account);
return true;
} else {
s_logger.info("Did not expunge " + vm);
return false;
}
} catch (OperationTimedoutException e) {
throw new CloudRuntimeException("Operation timed out", e);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Concurrent operation ", e);
}
}
@Override
public <T extends VMInstanceVO> boolean advanceExpunge(T vm, User caller, Account account) throws ResourceUnavailableException, OperationTimedoutException, ConcurrentOperationException {
if (vm == null || vm.getRemoved() != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find vm or vm is destroyed: " + vm);
}
return true;
}
if (!this.advanceStop(vm, false, caller, account)) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to stop the VM so we can't expunge it.");
}
}
if (!stateTransitTo(vm, VirtualMachine.Event.ExpungeOperation, vm.getHostId())) {
s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm.toString());
return false;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Destroying vm " + vm);
}
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
_networkMgr.cleanupNics(profile);
//Clean up volumes based on the vm's instance id
_storageMgr.cleanupVolumes(vm.getId());
VirtualMachineGuru<T> guru = (VirtualMachineGuru<T>)_vmGurus.get(vm.getType());
guru.finalizeExpunge(vm);
if (s_logger.isDebugEnabled()) {
s_logger.debug("Expunged " + vm);
}
UsageEventVO usageEvent = new UsageEventVO(EventTypes.EVENT_VM_DESTROY, vm.getAccountId(), vm.getDataCenterId(), vm.getId(), vm.getName(), vm.getServiceOfferingId(), vm.getTemplateId(), null);
_usageEventDao.persist(usageEvent);
return true;
}
@Override
public boolean start() {
_executor.scheduleAtFixedRate(new CleanupTask(), _cleanupInterval, _cleanupInterval, TimeUnit.SECONDS);
return true;
}
@Override
public boolean stop() {
return true;
}
@Override
public boolean configure(String name, Map<String, Object> xmlParams) throws ConfigurationException {
_name = name;
ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
Map<String, String> params = configDao.getConfiguration(xmlParams);
_retry = NumbersUtil.parseInt(params.get(Config.StartRetry.key()), 10);
ReservationContextImpl.setComponents(_userDao, _domainDao, _accountDao);
VirtualMachineProfileImpl.setComponents(_offeringDao, _templateDao, _accountDao);
Adapters<HypervisorGuru> hvGurus = locator.getAdapters(HypervisorGuru.class);
for (HypervisorGuru guru : hvGurus) {
_hvGurus.put(guru.getHypervisorType(), guru);
}
_cancelWait = NumbersUtil.parseLong(params.get(Config.VmOpCancelInterval.key()), 3600);
_cleanupWait = NumbersUtil.parseLong(params.get(Config.VmOpCleanupWait.key()), 3600);
_cleanupInterval = NumbersUtil.parseLong(params.get(Config.VmOpCleanupInterval.key()), 86400) * 1000;
_opWaitInterval = NumbersUtil.parseLong(params.get(Config.VmOpWaitInterval.key()), 120) * 1000;
_lockStateRetry = NumbersUtil.parseInt(params.get(Config.VmOpLockStateRetry.key()), 5);
_executor = Executors.newScheduledThreadPool(1, new NamedThreadFactory("Vm-Operations-Cleanup"));
_nodeId = _clusterMgr.getId();
_stateMachine.registerListener(this);
return true;
}
@Override
public String getName() {
return _name;
}
protected VirtualMachineManagerImpl() {
setStateMachine();
}
@Override
public <T extends VMInstanceVO> T start(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ResourceUnavailableException {
try {
return advanceStart(vm, params, caller, account);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to start a VM due to concurrent operation", e);
}
}
protected boolean checkWorkItems(VMInstanceVO vm, State state) throws ConcurrentOperationException {
while (true) {
ItWorkVO vo = _workDao.findByOutstandingWork(vm.getId(), state);
if (vo == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find work for " + vm);
}
return true;
}
if (vo.getStep() == Step.Done) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Work for " + vm + " is " + vo.getStep());
}
return true;
}
if (vo.getSecondsTaskIsInactive() > _cancelWait) {
s_logger.warn("The task item for vm " + vm + " has been inactive for " + vo.getSecondsTaskIsInactive());
return false;
}
try {
Thread.sleep(_opWaitInterval);
} catch (InterruptedException e) {
s_logger.info("Waiting for " + vm + " but is interrupted");
throw new ConcurrentOperationException("Waiting for " + vm + " but is interrupted");
}
s_logger.debug("Waiting some more to make sure there's no activity on " + vm);
}
}
@DB
protected <T extends VMInstanceVO> Ternary<T, ReservationContext, ItWorkVO> changeToStartState(VirtualMachineGuru<T> vmGuru, T vm, User caller, Account account) throws ConcurrentOperationException {
long vmId = vm.getId();
ItWorkVO work = new ItWorkVO(UUID.randomUUID().toString(), _nodeId, State.Starting, vm.getId());
int retry = _lockStateRetry;
while (retry-- != 0) {
Transaction txn = Transaction.currentTxn();
txn.start();
try {
if (stateTransitTo(vm, Event.StartRequested, null, work.getId())) {
Journal journal = new Journal.LogJournal("Creating " + vm, s_logger);
work = _workDao.persist(work);
ReservationContextImpl context = new ReservationContextImpl(work.getId(), journal, caller, account);
if (s_logger.isDebugEnabled()) {
s_logger.debug("Successfully transitioned to start state for " + vm + " reservation id = " + work.getId());
}
return new Ternary<T, ReservationContext, ItWorkVO>(vmGuru.findById(vmId), context, work);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Determining why we're unable to update the state to Starting for " + vm);
}
VMInstanceVO instance = _vmDao.lockRow(vmId, true);
if (instance == null) {
throw new ConcurrentOperationException("Unable to acquire lock on " + vm);
}
State state = instance.getState();
if (state == State.Running) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM is already started: " + vm);
}
return null;
}
if (state.isTransitional()) {
if (!checkWorkItems(vm, state)) {
throw new ConcurrentOperationException("There are concurrent operations on the VM " + vm);
} else {
continue;
}
}
if (state != State.Stopped) {
s_logger.debug("VM " + vm + " is not in a state to be started: " + state);
return null;
}
} finally {
txn.commit();
}
}
throw new ConcurrentOperationException("Unable to change the state of " + vm);
}
@DB
protected <T extends VMInstanceVO> boolean changeState(T vm, Event event, Long hostId, ItWorkVO work, Step step) {
Transaction txn = Transaction.currentTxn();
txn.start();
if (!stateTransitTo(vm, event, hostId)) {
return false;
}
_workDao.updateStep(work, step);
txn.commit();
return true;
}
@Override
public <T extends VMInstanceVO> T advanceStart(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ConcurrentOperationException, ResourceUnavailableException {
long vmId = vm.getId();
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
Ternary<T, ReservationContext, ItWorkVO> start = changeToStartState(vmGuru, vm, caller, account);
if (start == null) {
return vmGuru.findById(vmId);
}
vm = start.first();
ReservationContext ctx = start.second();
ItWorkVO work = start.third();
T startedVm = null;
ServiceOfferingVO offering = _offeringDao.findById(vm.getServiceOfferingId());
VMTemplateVO template = _templateDao.findById(vm.getTemplateId());
DataCenterDeployment plan = new DataCenterDeployment(vm.getDataCenterId(), vm.getPodId(), null, null);
HypervisorGuru hvGuru = _hvGurus.get(vm.getHypervisorType());
try {
Journal journal = start.second().getJournal();
ExcludeList avoids = new ExcludeList();
int retry = _retry;
while (retry-- != 0) { // It's != so that it can match -1.
VirtualMachineProfileImpl<T> vmProfile = new VirtualMachineProfileImpl<T>(vm, template, offering, null, params);
DeployDestination dest = null;
for (DeploymentPlanner planner : _planners) {
dest = planner.plan(vmProfile, plan, avoids);
if (dest != null) {
avoids.addHost(dest.getHost().getId());
journal.record("Deployment found ", vmProfile, dest);
break;
}
}
if (dest == null) {
throw new InsufficientServerCapacityException("Unable to create a deployment for " + vmProfile, DataCenter.class, plan.getDataCenterId());
}
long destHostId = dest.getHost().getId();
if (!changeState(vm, Event.OperationRetry, destHostId, work, Step.Prepare)) {
throw new ConcurrentOperationException("Unable to update the state of the Virtual Machine");
}
try {
_storageMgr.prepare(vmProfile, dest);
_networkMgr.prepare(vmProfile, dest, ctx);
vmGuru.finalizeVirtualMachineProfile(vmProfile, dest, ctx);
VirtualMachineTO vmTO = hvGuru.implement(vmProfile);
Commands cmds = new Commands(OnError.Revert);
cmds.addCommand(new StartCommand(vmTO));
vmGuru.finalizeDeployment(cmds, vmProfile, dest, ctx);
vm.setPodId(dest.getPod().getId());
work = _workDao.findById(work.getId());
if (work == null || work.getStep() != Step.Prepare) {
throw new ConcurrentOperationException("Work steps have been changed: " + work);
}
_workDao.updateStep(work, Step.Start);
_agentMgr.send(destHostId, cmds);
_workDao.updateStep(work, Step.Started);
Answer startAnswer = cmds.getAnswer(StartAnswer.class);
if (startAnswer != null && startAnswer.getResult()) {
if (vmGuru.finalizeStart(vmProfile, destHostId, cmds, ctx)) {
if (!changeState(vm, Event.OperationSucceeded, destHostId, work, Step.Done)) {
throw new ConcurrentOperationException("Unable to transition to a new state.");
}
startedVm = vm;
if (s_logger.isDebugEnabled()) {
s_logger.debug("Creation complete for VM " + vm);
}
return startedVm;
}
}
s_logger.info("Unable to start VM on " + dest.getHost() + " due to " + (startAnswer == null ? " no start answer" : startAnswer.getDetails()));
} catch (OperationTimedoutException e) {
s_logger.debug("Unable to send the start command to host " + dest.getHost());
if (e.isActive()) {
//TODO: This one is different as we're not sure if the VM is actually started.
}
avoids.addHost(destHostId);
continue;
} catch (ResourceUnavailableException e) {
if (!avoids.add(e)) {
if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
throw e;
} else {
throw new CloudRuntimeException("Resource is not available to start the VM.", e);
}
}
s_logger.info("Unable to contact resource.", e);
continue;
} catch (InsufficientCapacityException e) {
if (!avoids.add(e)) {
if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
throw e;
} else {
throw new CloudRuntimeException("Insufficient capacity to start the VM.", e);
}
}
s_logger.info("Insufficient capacity ", e);
continue;
} catch (RuntimeException e) {
s_logger.warn("Failed to start instance " + vm, e);
throw new CloudRuntimeException("Failed to start " + vm, e);
} finally {
if (startedVm == null) {
_workDao.updateStep(work, Step.Release);
cleanup(vmGuru, vmProfile, work, false, caller, account);
}
}
}
} finally {
if (startedVm == null) {
changeState(vm, Event.OperationFailed, null, work, Step.Done);
}
}
return startedVm;
}
@Override
public <T extends VMInstanceVO> boolean stop(T vm, User user, Account account) throws ResourceUnavailableException {
try {
return advanceStop(vm, false, user, account);
} catch (OperationTimedoutException e) {
throw new AgentUnavailableException("Unable to stop vm because the operation to stop timed out", vm.getHostId(), e);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to stop vm because of a concurrent operation", e);
}
}
protected <T extends VMInstanceVO> boolean sendStop(VirtualMachineGuru<T> guru, VirtualMachineProfile<T> profile, boolean force) {
VMInstanceVO vm = profile.getVirtualMachine();
StopCommand stop = new StopCommand(vm, vm.getInstanceName(), null);
try {
StopAnswer answer = (StopAnswer)_agentMgr.send(vm.getHostId(), stop);
if (!answer.getResult()) {
s_logger.debug("Unable to stop VM due to " + answer.getDetails());
return false;
}
guru.finalizeStop(profile, answer);
} catch (AgentUnavailableException e) {
if (!force) {
return false;
}
} catch (OperationTimedoutException e) {
if (!force) {
return false;
}
}
return true;
}
protected <T extends VMInstanceVO> boolean cleanup(VirtualMachineGuru<T> guru, VirtualMachineProfile<T> profile, ItWorkVO work, boolean force, User user, Account account) {
T vm = profile.getVirtualMachine();
State state = vm.getState();
if (state == State.Starting) {
Step step = work.getStep();
if (step == Step.Start && !force) {
return false;
}
if (step == Step.Started || step == Step.Start) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
return false;
}
}
}
if (step != Step.Release && step != Step.Prepare && step != Step.Started && step != Step.Start) {
return true;
}
} else if (state == State.Stopping) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
return false;
}
}
} else if (state == State.Migrating) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
return false;
}
}
if (vm.getLastHostId() != null) {
if (!sendStop(guru, profile, force)) {
return false;
}
}
} else if (state == State.Running) {
if (!sendStop(guru, profile, force)) {
return false;
}
}
_networkMgr.release(profile, force);
_storageMgr.release(profile);
return true;
}
@Override
public <T extends VMInstanceVO> boolean advanceStop(T vm, boolean forced, User user, Account account) throws AgentUnavailableException, OperationTimedoutException, ConcurrentOperationException {
long vmId = vm.getId();
State state = vm.getState();
if (state == State.Stopped) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM is already stopped: " + vm);
}
return true;
}
if (state == State.Destroyed || state == State.Expunging || state == State.Error) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Stopped called on " + vm + " but the state is " + state);
}
return true;
}
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
if (!stateTransitTo(vm, Event.StopRequested, vm.getHostId())) {
if (!forced) {
throw new ConcurrentOperationException("VM is being operated on by someone else.");
}
vm = vmGuru.findById(vmId);
if (vm == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find VM " + vmId);
}
return true;
}
}
if ((vm.getState() == State.Starting || vm.getState() == State.Stopping || vm.getState() == State.Migrating) && forced) {
ItWorkVO work = _workDao.findByOutstandingWork(vm.getId(), vm.getState());
if (work != null) {
if (cleanup(vmGuru, new VirtualMachineProfileImpl<T>(vm), work, forced, user, account)) {
return stateTransitTo(vm, Event.AgentReportStopped, null);
}
}
}
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
if (vm.getHostId() != null) {
StopCommand stop = new StopCommand(vm, vm.getInstanceName(), null);
boolean stopped = false;
StopAnswer answer = null;
try {
answer = (StopAnswer)_agentMgr.send(vm.getHostId(), stop);
stopped = answer.getResult();
if (!stopped) {
throw new CloudRuntimeException("Unable to stop the virtual machine due to " + answer.getDetails());
} else {
if(vm.getType() == VirtualMachine.Type.User){
UsageEventVO usageEvent = new UsageEventVO(EventTypes.EVENT_VM_STOP, vm.getAccountId(), vm.getDataCenterId(), vm.getId(), vm.getName(), vm.getServiceOfferingId(), vm.getTemplateId(), null);
_usageEventDao.persist(usageEvent);
}
}
vmGuru.finalizeStop(profile, answer);
} catch (AgentUnavailableException e) {
} catch (OperationTimedoutException e) {
} finally {
if (!stopped) {
if (!forced) {
stateTransitTo(vm, Event.OperationFailed, vm.getHostId());
} else {
s_logger.warn("Unable to actually stop " + vm + " but continue with release because it's a force stop");
}
}
}
}
if (s_logger.isDebugEnabled()) {
s_logger.debug(vm + " is stopped on the host. Proceeding to release resource held.");
}
try {
_networkMgr.release(profile, forced);
s_logger.debug("Successfully released network resources for the vm " + vm);
} catch (Exception e) {
s_logger.warn("Unable to release some network resources.", e);
}
try {
_storageMgr.release(profile);
s_logger.debug("Successfully released storage resources for the vm " + vm);
} catch (Exception e) {
s_logger.warn("Unable to release storage resources.", e);
}
vm.setReservationId(null);
return stateTransitTo(vm, Event.OperationSucceeded, null);
}
private void setStateMachine() {
_stateMachine = VirtualMachine.State.getStateMachine();
}
protected boolean stateTransitTo(VMInstanceVO vm, VirtualMachine.Event e, Long hostId, String reservationId) {
vm.setReservationId(reservationId);
return _stateMachine.transitTo(vm, e, hostId, _vmDao);
}
@Override
public boolean stateTransitTo(VMInstanceVO vm, VirtualMachine.Event e, Long hostId) {
return _stateMachine.transitTo(vm, e, hostId, _vmDao);
}
@Override
public <T extends VMInstanceVO> boolean remove(T vm, User user, Account caller) {
//expunge the corresponding nics
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
_networkMgr.expungeNics(profile);
s_logger.trace("Nics of the vm " + vm + " are expunged successfully");
return _vmDao.remove(vm.getId());
}
@Override
public <T extends VMInstanceVO> boolean destroy(T vm, User user, Account caller) throws AgentUnavailableException, OperationTimedoutException, ConcurrentOperationException {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Destroying vm " + vm.toString());
}
if (vm == null || vm.getState() == State.Destroyed || vm.getState() == State.Expunging || vm.getRemoved() != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find vm or vm is destroyed: " + vm);
}
return true;
}
if (!advanceStop(vm, false, user, caller)) {
s_logger.debug("Unable to stop " + vm);
return false;
}
if (!stateTransitTo(vm, VirtualMachine.Event.DestroyRequested, vm.getHostId())) {
s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm.toString());
return false;
}
return true;
}
@Override
public <T extends VMInstanceVO> T migrate(T vm, long srcHostId, DeployDestination dest) throws ResourceUnavailableException {
s_logger.info("Migrating " + vm + " to " + dest);
long dstHostId = dest.getHost().getId();
Host fromHost = _hostDao.findById(srcHostId);
if (fromHost == null) {
s_logger.info("Unable to find the host to migrate from: " + srcHostId);
return null;
}
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
vm = vmGuru.findById(vm.getId());
if (vm == null || vm.getRemoved() != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find the vm " + vm);
}
return null;
}
short alertType = AlertManager.ALERT_TYPE_USERVM_MIGRATE;
if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_DOMAIN_ROUTER_MIGRATE;
} else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_CONSOLE_PROXY_MIGRATE;
}
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
_networkMgr.prepareNicForMigration(profile, dest);
_storageMgr.prepareForMigration(profile, dest);
HypervisorGuru hvGuru = _hvGurus.get(vm.getHypervisorType());
VirtualMachineTO to = hvGuru.implement(profile);
PrepareForMigrationCommand pfmc = new PrepareForMigrationCommand(to);
PrepareForMigrationAnswer pfma;
try {
pfma = (PrepareForMigrationAnswer)_agentMgr.send(dstHostId, pfmc);
} catch (OperationTimedoutException e1) {
throw new AgentUnavailableException("Operation timed out", dstHostId);
}
if (!pfma.getResult()) {
throw new AgentUnavailableException(pfma.getDetails(), dstHostId);
}
boolean migrated = false;
try {
vm.setLastHostId(srcHostId);
if (vm == null || vm.getRemoved() != null || vm.getHostId() == null || vm.getHostId() != srcHostId || !stateTransitTo(vm, Event.MigrationRequested, dstHostId)) {
s_logger.info("Migration cancelled because state has changed: " + vm);
return null;
}
boolean isWindows = _guestOsCategoryDao.findById(_guestOsDao.findById(vm.getGuestOSId()).getCategoryId()).getName().equalsIgnoreCase("Windows");
MigrateCommand mc = new MigrateCommand(vm.getInstanceName(), dest.getHost().getPrivateIpAddress(), isWindows);
MigrateAnswer ma = (MigrateAnswer)_agentMgr.send(vm.getLastHostId(), mc);
if (!ma.getResult()) {
return null;
}
Commands cmds = new Commands(OnError.Revert);
CheckVirtualMachineCommand cvm = new CheckVirtualMachineCommand(vm.getInstanceName());
cmds.addCommand(cvm);
_agentMgr.send(dstHostId, cmds);
CheckVirtualMachineAnswer answer = cmds.getAnswer(CheckVirtualMachineAnswer.class);
if (!answer.getResult()) {
s_logger.debug("Unable to complete migration for " + vm.toString());
stateTransitTo(vm, VirtualMachine.Event.AgentReportStopped, null);
return null;
}
State state = answer.getState();
if (state == State.Stopped) {
s_logger.warn("Unable to complete migration as we can not detect it on " + dest.getHost());
stateTransitTo(vm, VirtualMachine.Event.AgentReportStopped, null);
return null;
}
stateTransitTo(vm, VirtualMachine.Event.OperationSucceeded, dstHostId);
migrated = true;
return vm;
} catch (final OperationTimedoutException e) {
s_logger.debug("operation timed out");
if (e.isActive()) {
// FIXME: scheduleRestart(vm, true);
}
throw new AgentUnavailableException("Operation timed out: ", dstHostId);
} finally {
if (!migrated) {
s_logger.info("Migration was unsuccessful. Cleaning up: " + vm.toString());
_alertMgr.sendAlert(alertType, fromHost.getDataCenterId(), fromHost.getPodId(), "Unable to migrate vm " + vm.getName() + " from host " + fromHost.getName() + " in zone " + dest.getDataCenter().getName() + " and pod " + dest.getPod().getName(), "Migrate Command failed. Please check logs.");
stateTransitTo(vm, Event.MigrationFailedOnSource, srcHostId);
Command cleanup = vmGuru.cleanup(vm, null);
_agentMgr.easySend(dstHostId, cleanup);
}
}
}
@Override
public boolean migrateAway(VirtualMachine.Type vmType, long vmId, long srcHostId) throws InsufficientServerCapacityException {
VirtualMachineGuru<? extends VMInstanceVO> vmGuru = _vmGurus.get(vmType);
VMInstanceVO vm = vmGuru.findById(vmId);
if (vm == null) {
s_logger.debug("Unable to find a VM for " + vmId);
return true;
}
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
Long hostId = vm.getHostId();
if (hostId == null) {
s_logger.debug("Unable to migrate because the VM doesn't have a host id: " + vm);
return true;
}
Host host = _hostDao.findById(hostId);
DataCenterDeployment plan = new DataCenterDeployment(host.getDataCenterId(), host.getPodId(), host.getClusterId(), null);
ExcludeList excludes = new ExcludeList();
excludes.addHost(hostId);
DeployDestination dest = null;
while (true) {
for (DeploymentPlanner planner : _planners) {
dest = planner.plan(profile, plan, excludes);
if (dest != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Planner " + planner + " found " + dest + " for migrating to.");
}
break;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Planner " + planner + " was unable to find anything.");
}
}
if (dest == null) {
throw new InsufficientServerCapacityException("Unable to find a server to migrate to.", host.getClusterId());
}
excludes.addHost(dest.getHost().getId());
try {
vm = migrate(vm, srcHostId, dest);
} catch (ResourceUnavailableException e) {
s_logger.debug("Unable to migrate to unavailable " + dest);
}
if (vm != null) {
return true;
}
}
}
protected class CleanupTask implements Runnable {
@Override
public void run() {
s_logger.trace("VM Operation Thread Running");
try {
_workDao.cleanup(_cleanupWait);
} catch (Exception e) {
s_logger.error("VM Operations failed due to ", e);
}
}
}
@Override
public <T extends VMInstanceVO> T reboot(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ResourceUnavailableException {
try {
return advanceReboot(vm, params, caller, account);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to reboot a VM due to concurrent operation", e);
}
}
@Override
public <T extends VMInstanceVO> T advanceReboot(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ConcurrentOperationException, ResourceUnavailableException {
T rebootedVm = null;
DataCenter dc = _configMgr.getZone(vm.getDataCenterId());
HostPodVO pod = _configMgr.getPod(vm.getPodId());
Host host = _hostDao.findById(vm.getHostId());
Cluster cluster = null;
if (host != null) {
cluster = _configMgr.getCluster(host.getClusterId());
}
DeployDestination dest = new DeployDestination(dc, pod, cluster, host);
ReservationContext ctx = new ReservationContextImpl(null, null, caller, account);
VirtualMachineProfile<VMInstanceVO> vmProfile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
try {
//prepare all network elements (start domR/dhcp if needed)
_networkMgr.prepare(vmProfile, dest, ctx);
Commands cmds = new Commands(OnError.Revert);
cmds.addCommand(new RebootCommand(vm.getName()));
_agentMgr.send(host.getId(), cmds);
Answer rebootAnswer = cmds.getAnswer(RebootAnswer.class);
if (rebootAnswer != null && rebootAnswer.getResult()) {
rebootedVm = vm;
return rebootedVm;
}
s_logger.info("Unable to reboot VM " + vm + " on " + dest.getHost() + " due to " + (rebootAnswer == null ? " no reboot answer" : rebootAnswer.getDetails()));
} catch (OperationTimedoutException e) {
s_logger.warn("Unable to send the reboot command to host " + dest.getHost() + " for the vm " + vm + " due to operation timeout", e);
throw new CloudRuntimeException("Failed to reboot the vm on host " + dest.getHost());
}
return rebootedVm;
}
@Override
public boolean preStateTransitionEvent(State oldState,
Event event, State newState, VirtualMachine vm, boolean transitionStatus, Long id) {
s_logger.debug("VM state transitted from :" + oldState + " to " + newState + " with event: " + event +
"vm's original host id: " + vm.getHostId() + " new host id: " + id);
if (!transitionStatus) {
return false;
}
if (oldState == State.Starting) {
if (event == Event.OperationSucceeded) {
if (vm.getLastHostId() != null && vm.getLastHostId() != id) {
/*need to release the reserved capacity on lasthost*/
_capacityMgr.releaseVmCapacity(vm, true, false, vm.getLastHostId());
}
vm.setLastHostId(id);
} else if (event == Event.OperationFailed) {
_capacityMgr.releaseVmCapacity(vm, false, false, vm.getHostId());
} else if (event == Event.OperationRetry) {
_capacityMgr.releaseVmCapacity(vm, false, false, vm.getHostId());
} else if (event == Event.AgentReportStopped) {
_capacityMgr.releaseVmCapacity(vm, false, true, vm.getHostId());
}
} else if (oldState == State.Running) {
if (event == Event.AgentReportStopped) {
_capacityMgr.releaseVmCapacity(vm, false, true, vm.getHostId());
}
} else if (oldState == State.Migrating) {
if (event == Event.AgentReportStopped) {
/*Release capacity from original host*/
_capacityMgr.releaseVmCapacity(vm, false, true, vm.getHostId());
} else if (event == Event.MigrationFailedOnSource) {
/*release capacity from dest host*/
_capacityMgr.releaseVmCapacity(vm, false, false, id);
id = vm.getHostId();
} else if (event == Event.MigrationFailedOnDest) {
/*release capacify from original host*/
_capacityMgr.releaseVmCapacity(vm, false, false, vm.getHostId());
} else if (event == Event.OperationSucceeded) {
_capacityMgr.releaseVmCapacity(vm, false, false, vm.getHostId());
/*set lasthost id to migration destination host id*/
vm.setLastHostId(id);
}
} else if (oldState == State.Stopping) {
if (event == Event.AgentReportStopped || event == Event.OperationSucceeded) {
_capacityMgr.releaseVmCapacity(vm, false, true, vm.getHostId());
}
} else if (oldState == State.Stopped) {
if (event == Event.DestroyRequested) {
_capacityMgr.releaseVmCapacity(vm, true, false, vm.getLastHostId());
vm.setLastHostId(null);
}
}
return transitionStatus;
}
@Override
public boolean postStateTransitionEvent(State oldState, Event event, State newState, VirtualMachine vo, boolean status) {
return true;
}
}
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