/**
* 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 .
*
*/
package com.cloud.agent.manager;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.nio.channels.ClosedChannelException;
import java.util.ArrayList;
import java.util.Enumeration;
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.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
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.Listener;
import com.cloud.agent.StartupCommandProcessor;
import com.cloud.agent.api.AgentControlAnswer;
import com.cloud.agent.api.AgentControlCommand;
import com.cloud.agent.api.Answer;
import com.cloud.agent.api.CheckHealthCommand;
import com.cloud.agent.api.Command;
import com.cloud.agent.api.GetHostStatsAnswer;
import com.cloud.agent.api.GetHostStatsCommand;
import com.cloud.agent.api.MaintainAnswer;
import com.cloud.agent.api.MaintainCommand;
import com.cloud.agent.api.PingAnswer;
import com.cloud.agent.api.PingCommand;
import com.cloud.agent.api.PingRoutingCommand;
import com.cloud.agent.api.PoolEjectCommand;
import com.cloud.agent.api.ReadyAnswer;
import com.cloud.agent.api.ReadyCommand;
import com.cloud.agent.api.ShutdownCommand;
import com.cloud.agent.api.StartupAnswer;
import com.cloud.agent.api.StartupCommand;
import com.cloud.agent.api.StartupExternalDhcpCommand;
import com.cloud.agent.api.StartupExternalFirewallCommand;
import com.cloud.agent.api.StartupExternalLoadBalancerCommand;
import com.cloud.agent.api.StartupProxyCommand;
import com.cloud.agent.api.StartupPxeServerCommand;
import com.cloud.agent.api.StartupRoutingCommand;
import com.cloud.agent.api.StartupSecondaryStorageCommand;
import com.cloud.agent.api.StartupStorageCommand;
import com.cloud.agent.api.StartupTrafficMonitorCommand;
import com.cloud.agent.api.UnsupportedAnswer;
import com.cloud.agent.api.UpdateHostPasswordCommand;
import com.cloud.agent.manager.allocator.PodAllocator;
import com.cloud.agent.transport.Request;
import com.cloud.agent.transport.Response;
import com.cloud.alert.AlertManager;
import com.cloud.api.ApiConstants;
import com.cloud.api.commands.UpdateHostPasswordCmd;
import com.cloud.capacity.Capacity;
import com.cloud.capacity.CapacityVO;
import com.cloud.capacity.dao.CapacityDao;
import com.cloud.cluster.ManagementServerNode;
import com.cloud.cluster.StackMaid;
import com.cloud.configuration.Config;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.dc.ClusterDetailsDao;
import com.cloud.dc.ClusterDetailsVO;
import com.cloud.dc.ClusterVO;
import com.cloud.dc.DataCenterIpAddressVO;
import com.cloud.dc.DataCenterVO;
import com.cloud.dc.HostPodVO;
import com.cloud.dc.PodCluster;
import com.cloud.dc.dao.ClusterDao;
import com.cloud.dc.dao.DataCenterDao;
import com.cloud.dc.dao.DataCenterIpAddressDao;
import com.cloud.dc.dao.HostPodDao;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.ConnectionException;
import com.cloud.exception.InvalidParameterValueException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.exception.UnsupportedVersionException;
import com.cloud.ha.HighAvailabilityManager;
import com.cloud.ha.HighAvailabilityManager.WorkType;
import com.cloud.host.DetailVO;
import com.cloud.host.Host;
import com.cloud.host.Host.HostAllocationState;
import com.cloud.host.Host.Type;
import com.cloud.host.HostStats;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.host.Status.Event;
import com.cloud.host.dao.HostDao;
import com.cloud.host.dao.HostDetailsDao;
import com.cloud.host.dao.HostTagsDao;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.hypervisor.kvm.resource.KvmDummyResourceBase;
import com.cloud.network.IPAddressVO;
import com.cloud.network.dao.IPAddressDao;
import com.cloud.resource.ServerResource;
import com.cloud.service.ServiceOfferingVO;
import com.cloud.storage.Storage;
import com.cloud.storage.StorageManager;
import com.cloud.storage.StoragePool;
import com.cloud.storage.StoragePoolHostVO;
import com.cloud.storage.StoragePoolStatus;
import com.cloud.storage.StoragePoolVO;
import com.cloud.storage.StorageService;
import com.cloud.storage.dao.StoragePoolDao;
import com.cloud.storage.dao.StoragePoolHostDao;
import com.cloud.storage.dao.VolumeDao;
import com.cloud.storage.resource.DummySecondaryStorageResource;
import com.cloud.template.VirtualMachineTemplate;
import com.cloud.user.AccountManager;
import com.cloud.user.User;
import com.cloud.utils.ActionDelegate;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.Pair;
import com.cloud.utils.StringUtils;
import com.cloud.utils.component.Adapters;
import com.cloud.utils.component.ComponentLocator;
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.SearchCriteria;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.net.Ip;
import com.cloud.utils.net.NetUtils;
import com.cloud.utils.nio.HandlerFactory;
import com.cloud.utils.nio.Link;
import com.cloud.utils.nio.NioServer;
import com.cloud.utils.nio.Task;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine.State;
import com.cloud.vm.VirtualMachineManager;
import com.cloud.vm.dao.VMInstanceDao;
import edu.emory.mathcs.backport.java.util.Collections;
/**
* Implementation of the Agent Manager. This class controls the connection to the agents.
*
* @config {@table || Param Name | Description | Values | Default || || port | port to listen on for agent connection. | Integer
* | 8250 || || workers | # of worker threads | Integer | 5 || || router.template.id | default id for template | Integer
* | 1 || || router.ram.size | default ram for router vm in mb | Integer | 128 || || router.ip.address | ip address for
* the router | ip | 10.1.1.1 || || wait | Time to wait for control commands to return | seconds | 1800 || || domain |
* domain for domain routers| String | foo.com || || alert.wait | time to wait before alerting on a disconnected agent |
* seconds | 1800 || || update.wait | time to wait before alerting on a updating agent | seconds | 600 || ||
* ping.interval | ping interval in seconds | seconds | 60 || || instance.name | Name of the deployment String |
* required || || start.retry | Number of times to retry start | Number | 2 || || ping.timeout | multiplier to
* ping.interval before announcing an agent has timed out | float | 2.0x || || router.stats.interval | interval to
* report router statistics | seconds | 300s || * }
**/
@Local(value = { AgentManager.class })
public class AgentManagerImpl implements AgentManager, HandlerFactory, Manager {
private static final Logger s_logger = Logger.getLogger(AgentManagerImpl.class);
protected ConcurrentHashMap _agents = new ConcurrentHashMap(10007);
protected List> _hostMonitors = new ArrayList>(17);
protected List> _cmdMonitors = new ArrayList>(17);
protected List> _creationMonitors = new ArrayList>(17);
protected List _loadingAgents = new ArrayList();
protected int _monitorId = 0;
protected NioServer _connection;
@Inject
protected HostDao _hostDao = null;
@Inject
protected HostDetailsDao _detailsDao = null;
@Inject
protected DataCenterDao _dcDao = null;
@Inject
protected DataCenterIpAddressDao _privateIPAddressDao = null;
@Inject
protected IPAddressDao _publicIPAddressDao = null;
@Inject
protected HostPodDao _podDao = null;
@Inject(adapter = PodAllocator.class)
protected Adapters _podAllocators = null;
@Inject
protected VMInstanceDao _vmDao = null;
@Inject
protected CapacityDao _capacityDao = null;
@Inject
protected ConfigurationDao _configDao = null;
@Inject
protected StoragePoolDao _storagePoolDao = null;
@Inject
protected StoragePoolHostDao _storagePoolHostDao = null;
@Inject
protected HostDetailsDao _hostDetailsDao = null;
@Inject
protected ClusterDao _clusterDao = null;
@Inject
protected ClusterDetailsDao _clusterDetailsDao = null;
@Inject
protected HostTagsDao _hostTagsDao = null;
@Inject
protected VolumeDao _volumeDao = null;
protected int _port;
@Inject
protected HighAvailabilityManager _haMgr = null;
@Inject
protected AlertManager _alertMgr = null;
@Inject
protected AccountManager _accountMgr = null;
@Inject
protected VirtualMachineManager _vmMgr = null;
@Inject StorageService _storageSvr = null;
@Inject StorageManager _storageMgr = null;
protected int _retry = 2;
protected String _name;
protected String _instance;
protected int _wait;
protected int _updateWait;
protected int _alertWait;
protected long _nodeId = -1;
protected Random _rand = new Random(System.currentTimeMillis());
protected int _pingInterval;
protected long _pingTimeout;
protected AgentMonitor _monitor = null;
protected ExecutorService _executor;
@Override
public boolean configure(final String name, final Map params) throws ConfigurationException {
_name = name;
final ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
if (configDao == null) {
throw new ConfigurationException("Unable to get the configuration dao.");
}
final Map configs = configDao.getConfiguration("AgentManager", params);
_port = NumbersUtil.parseInt(configs.get("port"), 8250);
final int workers = NumbersUtil.parseInt(configs.get("workers"), 5);
String value = configs.get("ping.interval");
_pingInterval = NumbersUtil.parseInt(value, 60);
value = configs.get("wait");
_wait = NumbersUtil.parseInt(value, 1800) * 1000;
value = configs.get("alert.wait");
_alertWait = NumbersUtil.parseInt(value, 1800);
value = configs.get("update.wait");
_updateWait = NumbersUtil.parseInt(value, 600);
value = configs.get("ping.timeout");
final float multiplier = value != null ? Float.parseFloat(value) : 2.5f;
_pingTimeout = (long) (multiplier * _pingInterval);
s_logger.info("Ping Timeout is " + _pingTimeout);
value = configs.get(Config.DirectAgentLoadSize.key());
int threads = NumbersUtil.parseInt(value, 16);
_instance = configs.get("instance.name");
if (_instance == null) {
_instance = "DEFAULT";
}
_nodeId = ManagementServerNode.getManagementServerId();
_hostDao.markHostsAsDisconnected(_nodeId);
_monitor = ComponentLocator.inject(AgentMonitor.class, _nodeId, _hostDao, _vmDao, _dcDao, _podDao, this, _alertMgr, _pingTimeout);
registerForHostEvents(_monitor, true, true, false);
_executor = new ThreadPoolExecutor(threads, threads, 60l, TimeUnit.SECONDS, new LinkedBlockingQueue(), new NamedThreadFactory("AgentTaskPool"));
_connection = new NioServer("AgentManager", _port, workers + 10, this);
s_logger.info("Listening on " + _port + " with " + workers + " workers");
return true;
}
@Override
public boolean isHostNativeHAEnabled(long hostId) {
HostVO host = _hostDao.findById(hostId);
if (host.getClusterId() != null) {
ClusterDetailsVO detail = _clusterDetailsDao.findDetail(host.getClusterId(), "NativeHA");
return detail == null ? false : Boolean.parseBoolean(detail.getValue());
}
return false;
}
@Override
public Task create(Task.Type type, Link link, byte[] data) {
return new AgentHandler(type, link, data);
}
@Override
public int registerForHostEvents(final Listener listener, boolean connections, boolean commands, boolean priority) {
synchronized (_hostMonitors) {
_monitorId++;
if (connections) {
if (priority) {
_hostMonitors.add(0, new Pair(_monitorId, listener));
} else {
_hostMonitors.add(new Pair(_monitorId, listener));
}
}
if (commands) {
if (priority) {
_cmdMonitors.add(0, new Pair(_monitorId, listener));
} else {
_cmdMonitors.add(new Pair(_monitorId, listener));
}
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Registering listener " + listener.getClass().getSimpleName() + " with id " + _monitorId);
}
return _monitorId;
}
}
@Override
public int registerForInitialConnects(final StartupCommandProcessor creator,boolean priority) {
synchronized (_hostMonitors) {
_monitorId++;
if (priority) {
_creationMonitors.add(0, new Pair(
_monitorId, creator));
} else {
_creationMonitors.add(0, new Pair(
_monitorId, creator));
}
}
return _monitorId;
}
@Override
public void unregisterForHostEvents(final int id) {
s_logger.debug("Deregistering " + id);
_hostMonitors.remove(id);
}
private AgentControlAnswer handleControlCommand(AgentAttache attache, final AgentControlCommand cmd) {
AgentControlAnswer answer = null;
for (Pair listener : _cmdMonitors) {
answer = listener.second().processControlCommand(attache.getId(), cmd);
if (answer != null) {
return answer;
}
}
s_logger.warn("No handling of agent control command: " + cmd.toString() + " sent from " + attache.getId());
return new AgentControlAnswer(cmd);
}
public void handleCommands(AgentAttache attache, final long sequence, final Command[] cmds) {
for (Pair listener : _cmdMonitors) {
boolean processed = listener.second().processCommands(attache.getId(), sequence, cmds);
if (s_logger.isTraceEnabled()) {
s_logger.trace("SeqA " + attache.getId() + "-" + sequence + ": " + (processed ? "processed" : "not processed") + " by " + listener.getClass());
}
}
}
@Override
public void notifyAnswersToMonitors(long agentId, long seq, Answer[] answers) {
for (Pair listener : _cmdMonitors) {
listener.second().processAnswers(agentId, seq, answers);
}
}
public AgentAttache findAttache(long hostId) {
AgentAttache attache = null;
synchronized (_agents) {
attache = _agents.get(hostId);
}
return attache;
}
@Override
public Set getConnectedHosts() {
// make the returning set be safe for concurrent iteration
final HashSet result = new HashSet();
synchronized (_agents) {
final Set s = _agents.keySet();
for (final Long id : s) {
result.add(id);
}
}
return result;
}
@Override
public List listByDataCenter(long dcId) {
List pods = _podDao.listByDataCenterId(dcId);
ArrayList pcs = new ArrayList();
for (HostPodVO pod : pods) {
List clusters = _clusterDao.listByPodId(pod.getId());
if (clusters.size() == 0) {
pcs.add(new PodCluster(pod, null));
} else {
for (ClusterVO cluster : clusters) {
pcs.add(new PodCluster(pod, cluster));
}
}
}
return pcs;
}
@Override
public List listByPod(long podId) {
ArrayList pcs = new ArrayList();
HostPodVO pod = _podDao.findById(podId);
if (pod == null) {
return pcs;
}
List clusters = _clusterDao.listByPodId(pod.getId());
if (clusters.size() == 0) {
pcs.add(new PodCluster(pod, null));
} else {
for (ClusterVO cluster : clusters) {
pcs.add(new PodCluster(pod, cluster));
}
}
return pcs;
}
protected AgentAttache handleDirectConnect(ServerResource resource, StartupCommand[] startup, Map details, boolean old, List hostTags, String allocationState, boolean forRebalance)
throws ConnectionException {
if (startup == null) {
return null;
}
HostVO server = createHost(startup, resource, details, old, hostTags, allocationState);
if (server == null) {
return null;
}
long id = server.getId();
AgentAttache attache = createAttache(id, server, resource);
StartupAnswer[] answers = new StartupAnswer[startup.length];
for (int i = 0; i < answers.length; i++) {
answers[i] = new StartupAnswer(startup[i], attache.getId(), _pingInterval);
}
attache.process(answers);
attache = notifyMonitorsOfConnection(attache, startup, forRebalance);
return attache;
}
@Override
public Answer sendToSecStorage(HostVO ssHost, Command cmd) {
if( ssHost.getType() == Host.Type.LocalSecondaryStorage ) {
return easySend(ssHost.getId(), cmd);
} else if ( ssHost.getType() == Host.Type.SecondaryStorage) {
return sendToSSVM(ssHost.getDataCenterId(), cmd);
} else {
String msg = "do not support Secondary Storage type " + ssHost.getType();
s_logger.warn(msg);
return new Answer(cmd, false, msg);
}
}
@Override
public HostVO getSSAgent(HostVO ssHost) {
if( ssHost.getType() == Host.Type.LocalSecondaryStorage ) {
return ssHost;
} else if ( ssHost.getType() == Host.Type.SecondaryStorage) {
Long dcId = ssHost.getDataCenterId();
List ssAHosts = _hostDao.listSecondaryStorageVM(dcId);
if (ssAHosts == null || ssAHosts.isEmpty() ) {
return null;
}
Collections.shuffle(ssAHosts);
return ssAHosts.get(0);
}
return null;
}
@Override
public long sendToSecStorage(HostVO ssHost, Command cmd, Listener listener) {
if( ssHost.getType() == Host.Type.LocalSecondaryStorage ) {
return gatherStats(ssHost.getId(), cmd, listener);
} else if ( ssHost.getType() == Host.Type.SecondaryStorage) {
return sendToSSVM(ssHost.getDataCenterId(), cmd, listener);
} else {
s_logger.warn("do not support Secondary Storage type " + ssHost.getType());
}
return -1;
}
private long sendToSSVM(final long dcId, final Command cmd, final Listener listener) {
List ssAHosts = _hostDao.listSecondaryStorageVM(dcId);
if (ssAHosts == null || ssAHosts.isEmpty() ) {
return -1;
}
Collections.shuffle(ssAHosts);
HostVO ssAhost = ssAHosts.get(0);
try {
return send(ssAhost.getId(), new Commands(cmd), listener);
} catch (final AgentUnavailableException e) {
return -1;
}
}
private Answer sendToSSVM(final long dcId, final Command cmd) {
List ssAHosts = _hostDao.listSecondaryStorageVM(dcId);
if (ssAHosts == null || ssAHosts.isEmpty() ) {
return new Answer(cmd, false, "can not find secondary storage VM agent for data center " + dcId);
}
Collections.shuffle(ssAHosts);
HostVO ssAhost = ssAHosts.get(0);
return easySend(ssAhost.getId(), cmd);
}
@Override
public Answer sendTo(Long dcId, HypervisorType type, Command cmd) {
List clusters = _clusterDao.listByDcHyType(dcId, type.toString());
int retry = 0;
for (ClusterVO cluster : clusters) {
List hosts = _hostDao.listBy(Host.Type.Routing, cluster.getId(), null, dcId);
for (HostVO host : hosts) {
retry++;
if (retry > _retry) {
return null;
}
Answer answer = null;
try {
answer = easySend(host.getId(), cmd);
} catch (Exception e) {
}
if (answer != null) {
return answer;
}
}
}
return null;
}
@Override
@DB
public boolean deleteHost(long hostId, boolean isForced, boolean forceDestroy, User caller) {
// Check if the host exists
HostVO host = _hostDao.findById(hostId);
if (host == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Host: " + hostId + " does not even exist. Delete call is ignored.");
}
return true;
}
AgentAttache attache = findAttache(hostId);
// Get storage pool host mappings here because they can be removed as a part of handleDisconnect later
List pools = _storagePoolHostDao.listByHostIdIncludingRemoved(hostId);
try {
if (host.getType() == Type.Routing) {
// Check if host is ready for removal
Status currentState = host.getStatus();
Status nextState = currentState.getNextStatus(Status.Event.Remove);
if (nextState == null) {
s_logger.debug("There is no transition from state " + currentState.toString() + " to state " + Status.Event.Remove.toString());
return false;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Deleting Host: " + hostId + " Guid:" + host.getGuid());
}
if (forceDestroy) {
//put local storage into mainenance mode, will set all the VMs on this local storage into stopped state
StoragePool storagePool = _storageMgr.findLocalStorageOnHost(host.getId());
if (storagePool != null) {
if (storagePool.getStatus() == StoragePoolStatus.Up || storagePool.getStatus() == StoragePoolStatus.ErrorInMaintenance) {
try {
storagePool = _storageSvr.preparePrimaryStorageForMaintenance(storagePool.getId());
if (storagePool == null) {
s_logger.debug("Failed to set primary storage into maintenance mode");
return false;
}
} catch (Exception e) {
s_logger.debug("Failed to set primary storage into maintenance mode, due to: " + e.toString());
return false;
}
}
List vmsOnLocalStorage = _storageMgr.listByStoragePool(storagePool.getId());
for (VMInstanceVO vm : vmsOnLocalStorage) {
if(!_vmMgr.destroy(vm, caller, _accountMgr.getAccount(vm.getAccountId()))) {
String errorMsg = "There was an error Destory the vm: " + vm + " as a part of hostDelete id=" + hostId;
s_logger.warn(errorMsg);
throw new CloudRuntimeException(errorMsg);
}
}
}
} else {
// Check if there are vms running/starting/stopping on this host
List vms = _vmDao.listByHostId(hostId);
if (!vms.isEmpty()) {
if (isForced) {
// Stop HA disabled vms and HA enabled vms in Stopping state
// Restart HA enabled vms
for (VMInstanceVO vm : vms) {
if (!vm.isHaEnabled() || vm.getState() == State.Stopping) {
s_logger.debug("Stopping vm: " + vm + " as a part of deleteHost id=" + hostId);
if (!_vmMgr.advanceStop(vm, true, caller, _accountMgr.getAccount(vm.getAccountId()))) {
String errorMsg = "There was an error stopping the vm: " + vm + " as a part of hostDelete id=" + hostId;
s_logger.warn(errorMsg);
throw new CloudRuntimeException(errorMsg);
}
} else if (vm.isHaEnabled() && (vm.getState() == State.Running || vm.getState() == State.Starting)) {
s_logger.debug("Scheduling restart for vm: " + vm + " " + vm.getState() + " on the host id=" + hostId);
_haMgr.scheduleRestart(vm, false);
}
}
} else {
throw new CloudRuntimeException("Unable to delete the host as there are vms in " + vms.get(0).getState() + " state using this host and isForced=false specified");
}
}
}
if (host.getHypervisorType() == HypervisorType.XenServer) {
if (host.getClusterId() != null) {
List hosts = _hostDao.listBy(Type.Routing, host.getClusterId(), host.getPodId(), host.getDataCenterId());
hosts.add(host);
boolean success = true;
for (HostVO thost : hosts) {
long thostId = thost.getId();
PoolEjectCommand eject = new PoolEjectCommand(host.getGuid());
Answer answer = easySend(thostId, eject);
if (answer != null && answer.getResult()) {
s_logger.debug("Eject Host: " + hostId + " from " + thostId + " Succeed");
success = true;
break;
} else {
success = false;
s_logger.warn("Eject Host: " + hostId + " from " + thostId + " failed due to " + (answer != null ? answer.getDetails() : "no answer"));
}
}
if (!success) {
String msg = "Unable to eject host " + host.getGuid() + " due to there is no host up in this cluster, please execute xe pool-eject host-uuid=" + host.getGuid()
+ "in this host " + host.getPrivateIpAddress();
s_logger.warn(msg);
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, host.getDataCenterId(), host.getPodId(), "Unable to eject host " + host.getGuid(), msg);
}
}
} else if (host.getHypervisorType() == HypervisorType.KVM) {
try {
ShutdownCommand cmd = new ShutdownCommand(ShutdownCommand.DeleteHost, null);
send(host.getId(), cmd);
} catch (AgentUnavailableException e) {
s_logger.warn("Sending ShutdownCommand failed: ", e);
} catch (OperationTimedoutException e) {
s_logger.warn("Sending ShutdownCommand failed: ", e);
}
} else if (host.getHypervisorType() == HypervisorType.BareMetal) {
List deadVms = _vmDao.listByLastHostId(hostId);
for (VMInstanceVO vm : deadVms) {
if (vm.getState() == State.Running || vm.getHostId() != null) {
throw new CloudRuntimeException("VM " + vm.getId() + "is still running on host " + hostId);
}
_vmDao.remove(vm.getId());
}
}
}
Transaction txn = Transaction.currentTxn();
txn.start();
_dcDao.releasePrivateIpAddress(host.getPrivateIpAddress(), host.getDataCenterId(), null);
if (attache != null) {
handleDisconnect(attache, Status.Event.Remove, false);
}
// delete host details
_hostDetailsDao.deleteDetails(hostId);
host.setGuid(null);
Long clusterId = host.getClusterId();
host.setClusterId(null);
_hostDao.update(host.getId(), host);
_hostDao.remove(hostId);
if (clusterId != null) {
List hosts = _hostDao.listByCluster(clusterId);
if (hosts.size() == 0) {
ClusterVO cluster = _clusterDao.findById(clusterId);
cluster.setGuid(null);
_clusterDao.update(clusterId, cluster);
}
}
// Delete the associated entries in host ref table
_storagePoolHostDao.deletePrimaryRecordsForHost(hostId);
// For pool ids you got, delete local storage host entries in pool table where
for (StoragePoolHostVO pool : pools) {
Long poolId = pool.getPoolId();
StoragePoolVO storagePool = _storagePoolDao.findById(poolId);
if (storagePool.isLocal() && forceDestroy) {
storagePool.setUuid(null);
storagePool.setClusterId(null);
_storagePoolDao.update(poolId, storagePool);
_storagePoolDao.remove(poolId);
s_logger.debug("Local storage id=" + poolId + " is removed as a part of host removal id=" + hostId);
}
}
// delete the op_host_capacity entry
Object[] capacityTypes = { Capacity.CAPACITY_TYPE_CPU, Capacity.CAPACITY_TYPE_MEMORY };
SearchCriteria hostCapacitySC = _capacityDao.createSearchCriteria();
hostCapacitySC.addAnd("hostOrPoolId", SearchCriteria.Op.EQ, hostId);
hostCapacitySC.addAnd("capacityType", SearchCriteria.Op.IN, capacityTypes);
_capacityDao.remove(hostCapacitySC);
txn.commit();
return true;
} catch (Throwable t) {
s_logger.error("Unable to delete host: " + hostId, t);
return false;
}
}
@Override
public boolean updateHostPassword(UpdateHostPasswordCmd upasscmd) {
if (upasscmd.getClusterId() == null) {
//update agent attache password
AgentAttache agent = this.findAttache(upasscmd.getHostId());
if (!(agent instanceof DirectAgentAttache)) {
return false;
}
UpdateHostPasswordCommand cmd = new UpdateHostPasswordCommand(upasscmd.getUsername(), upasscmd.getPassword());
agent.updatePassword(cmd);
}
else {
// get agents for the cluster
List hosts = _hostDao.listByCluster(upasscmd.getClusterId());
for (HostVO h : hosts) {
AgentAttache agent = this.findAttache(h.getId());
if (!(agent instanceof DirectAgentAttache)) {
continue;
}
UpdateHostPasswordCommand cmd = new UpdateHostPasswordCommand(upasscmd.getUsername(), upasscmd.getPassword());
agent.updatePassword(cmd);
}
}
return true;
}
protected int getPingInterval() {
return _pingInterval;
}
@Override
public Answer send(Long hostId, Command cmd, int timeout) throws AgentUnavailableException, OperationTimedoutException {
Commands cmds = new Commands(OnError.Stop);
cmds.addCommand(cmd);
send(hostId, cmds, timeout);
Answer[] answers = cmds.getAnswers();
if (answers != null && !(answers[0] instanceof UnsupportedAnswer)) {
return answers[0];
}
if (answers != null && (answers[0] instanceof UnsupportedAnswer)) {
s_logger.warn("Unsupported Command: " + answers[0].getDetails());
return answers[0];
}
return null;
}
@DB
protected boolean noDbTxn() {
Transaction txn = Transaction.currentTxn();
return !txn.dbTxnStarted();
}
@Override
public Answer[] send(Long hostId, Commands commands, int timeout) throws AgentUnavailableException, OperationTimedoutException {
assert hostId != null : "Who's not checking the agent id before sending? ... (finger wagging)";
if (hostId == null) {
throw new AgentUnavailableException(-1);
}
assert noDbTxn() : "I know, I know. Why are we so strict as to not allow txn across an agent call? ... Why are we so cruel ... Why are we such a dictator .... Too bad... Sorry...but NO AGENT COMMANDS WRAPPED WITHIN DB TRANSACTIONS!";
Command[] cmds = commands.toCommands();
assert cmds.length > 0 : "Ask yourself this about a hundred times. Why am I sending zero length commands?";
if (cmds.length == 0) {
commands.setAnswers(new Answer[0]);
}
final AgentAttache agent = getAttache(hostId);
if (agent == null || agent.isClosed()) {
throw new AgentUnavailableException("agent not logged into this management server", hostId);
}
Request req = new Request(hostId, _nodeId, cmds, commands.stopOnError(), true);
req.setSequence(agent.getNextSequence());
Answer[] answers = agent.send(req, timeout);
notifyAnswersToMonitors(hostId, req.getSequence(), answers);
commands.setAnswers(answers);
return answers;
}
protected Status investigate(AgentAttache agent) {
Long hostId = agent.getId();
if (s_logger.isDebugEnabled()) {
s_logger.debug("checking if agent (" + hostId + ") is alive");
}
try {
Request req = new Request(hostId, _nodeId, new CheckHealthCommand(), true);
req.setSequence(agent.getNextSequence());
Answer[] answers = agent.send(req, 50 * 1000);
if (answers != null && answers[0] != null && answers[0].getResult()) {
Status status = Status.Up;
if (s_logger.isDebugEnabled()) {
s_logger.debug("agent (" + hostId + ") responded to checkHeathCommand, reporting that agent is " + status);
}
return status;
}
} catch (AgentUnavailableException e) {
s_logger.debug("Agent is unavailable so we move on.");
} catch (OperationTimedoutException e) {
s_logger.debug("Timed Out " + e.getMessage());
}
return _haMgr.investigate(hostId);
}
protected AgentAttache getAttache(final Long hostId) throws AgentUnavailableException {
assert (hostId != null) : "Who didn't check their id value?";
if (hostId == null) {
return null;
}
AgentAttache agent = findAttache(hostId);
if (agent == null) {
s_logger.debug("Unable to find agent for " + hostId);
throw new AgentUnavailableException("Unable to find agent ", hostId);
}
return agent;
}
@Override
public long send(Long hostId, Commands commands, Listener listener) throws AgentUnavailableException {
final AgentAttache agent = getAttache(hostId);
if (agent.isClosed()) {
return -1;
}
Command[] cmds = commands.toCommands();
assert cmds.length > 0 : "Why are you sending zero length commands?";
if (cmds.length == 0) {
return -1;
}
Request req = new Request(hostId, _nodeId, cmds, commands.stopOnError(), true);
req.setSequence(agent.getNextSequence());
agent.send(req, listener);
return req.getSequence();
}
@Override
public long gatherStats(Long hostId, Command cmd, Listener listener) {
try {
return send(hostId, new Commands(cmd), listener);
} catch (final AgentUnavailableException e) {
return -1;
}
}
public void removeAgent(AgentAttache attache, Status nextState) {
if (attache == null) {
return;
}
long hostId = attache.getId();
if (s_logger.isDebugEnabled()) {
s_logger.debug("Remove Agent : " + hostId);
}
AgentAttache removed = null;
boolean conflict = false;
synchronized (_agents) {
removed = _agents.remove(hostId);
if (removed != null && removed != attache) {
conflict = true;
_agents.put(hostId, removed);
removed = attache;
}
}
if (conflict) {
s_logger.debug("Agent for host " + hostId + " is created when it is being disconnected");
}
if (removed != null) {
removed.disconnect(nextState);
}
}
@Override
public void disconnect(final long hostId, final Status.Event event, final boolean investigate) {
AgentAttache attache = findAttache(hostId);
if (attache != null) {
disconnect(attache, event, investigate);
} else {
synchronized (_loadingAgents) {
if (_loadingAgents.contains(hostId)) {
s_logger.info("Host " + hostId + " is being loaded so no disconnects needed.");
return;
}
}
HostVO host = _hostDao.findById(hostId);
if (host != null && host.getRemoved() == null) {
if (event != null && event.equals(Event.Remove)) {
host.setGuid(null);
host.setClusterId(null);
}
_hostDao.updateStatus(host, event, _nodeId);
}
}
}
@Override
public void updateStatus(HostVO host, Status.Event event) {
_hostDao.updateStatus(host, event, _nodeId);
}
public void disconnect(AgentAttache attache, final Status.Event event, final boolean investigate) {
_executor.submit(new DisconnectTask(attache, event, investigate));
}
protected boolean handleDisconnect(AgentAttache attache, Status.Event event, boolean investigate) {
if (attache == null) {
return true;
}
long hostId = attache.getId();
s_logger.info("Host " + hostId + " is disconnecting with event " + event.toString());
HostVO host = _hostDao.findById(hostId);
if (host == null) {
s_logger.warn("Can't find host with " + hostId);
removeAgent(attache, Status.Removed);
return true;
}
final Status currentState = host.getStatus();
if (currentState == Status.Down || currentState == Status.Alert || currentState == Status.Removed) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Host " + hostId + " is already " + currentState.toString());
}
if (currentState != Status.PrepareForMaintenance) {
removeAgent(attache, currentState);
}
return true;
}
Status nextState = currentState.getNextStatus(event);
if (nextState == null) {
if (!(attache instanceof DirectAgentAttache)) {
return false;
}
s_logger.debug("There is no transition from state " + currentState.toString() + " and event " + event.toString());
assert false : "How did we get here. Look at the FSM";
return false;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("The next state is " + nextState.toString() + ", current state is " + currentState);
}
// Now we go and correctly diagnose what the actual situation is
if (nextState == Status.Alert && investigate) {
s_logger.info("Investigating why host " + hostId + " has disconnected with event " + event.toString());
final Status determinedState = investigate(attache);
s_logger.info("The state determined is " + (determinedState != null ? determinedState.toString() : "undeterminable"));
if (determinedState == null || determinedState == Status.Down) {
s_logger.error("Host is down: " + host.getId() + "-" + host.getName() + ". Starting HA on the VMs");
event = Event.HostDown;
} else if (determinedState == Status.Up) {
// we effectively pinged from the server here.
s_logger.info("Agent is determined to be up and running");
_hostDao.updateStatus(host, Event.Ping, _nodeId);
return false;
} else if (determinedState == Status.Disconnected) {
s_logger.warn("Agent is disconnected but the host is still up: " + host.getId() + "-" + host.getName());
if (currentState == Status.Disconnected) {
if (((System.currentTimeMillis() >> 10) - host.getLastPinged()) > _alertWait) {
s_logger.warn("Host " + host.getId() + " has been disconnected pass the time it should be disconnected.");
event = Event.WaitedTooLong;
} else {
s_logger.debug("Host has been determined to be disconnected but it hasn't passed the wait time yet.");
return false;
}
} else if (currentState == Status.Updating) {
if (((System.currentTimeMillis() >> 10) - host.getLastPinged()) > _updateWait) {
s_logger.warn("Host " + host.getId() + " has been updating for too long");
event = Event.WaitedTooLong;
} else {
s_logger.debug("Host has been determined to be disconnected but it hasn't passed the wait time yet.");
return false;
}
} else if (currentState == Status.Up) {
DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
HostPodVO podVO = _podDao.findById(host.getPodId());
String hostDesc = "name: " + host.getName() + " (id:" + host.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + podVO.getName();
if ((host.getType() != Host.Type.SecondaryStorage) && (host.getType() != Host.Type.ConsoleProxy)) {
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, host.getDataCenterId(), host.getPodId(), "Host disconnected, " + hostDesc, "If the agent for host [" + hostDesc
+ "] is not restarted within " + _alertWait + " seconds, HA will begin on the VMs");
}
event = Event.AgentDisconnected;
}
} else {
// if we end up here we are in alert state, send an alert
DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
HostPodVO podVO = _podDao.findById(host.getPodId());
String hostDesc = "name: " + host.getName() + " (id:" + host.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + podVO.getName();
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, host.getDataCenterId(), host.getPodId(), "Host in ALERT state, " + hostDesc, "In availability zone " + host.getDataCenterId()
+ ", host is in alert state: " + host.getId() + "-" + host.getName());
}
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Deregistering link for " + hostId + " with state " + nextState);
}
removeAgent(attache, nextState);
_hostDao.disconnect(host, event, _nodeId);
host = _hostDao.findById(host.getId());
if (host.getStatus() == Status.Alert || host.getStatus() == Status.Down) {
_haMgr.scheduleRestartForVmsOnHost(host, investigate);
}
for (Pair monitor : _hostMonitors) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Sending Disconnect to listener: " + monitor.second().getClass().getName());
}
monitor.second().processDisconnect(hostId, nextState);
}
return true;
}
protected AgentAttache notifyMonitorsOfConnection(AgentAttache attache, final StartupCommand[] cmd, boolean forRebalance) throws ConnectionException {
long hostId = attache.getId();
HostVO host = _hostDao.findById(hostId);
for (Pair monitor : _hostMonitors) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Sending Connect to listener: " + monitor.second().getClass().getSimpleName());
}
for (int i = 0; i < cmd.length; i++) {
try {
monitor.second().processConnect(host, cmd[i], forRebalance);
} catch (Exception e) {
if (e instanceof ConnectionException) {
ConnectionException ce = (ConnectionException)e;
if (ce.isSetupError()) {
s_logger.warn("Monitor " + monitor.second().getClass().getSimpleName() + " says there is an error in the connect process for " + hostId + " due to " + e.getMessage());
handleDisconnect(attache, Event.AgentDisconnected, false);
throw ce;
} else {
s_logger.info("Monitor " + monitor.second().getClass().getSimpleName() + " says not to continue the connect process for " + hostId + " due to " + e.getMessage());
handleDisconnect(attache, Event.ShutdownRequested, false);
return attache;
}
} else {
s_logger.error("Monitor " + monitor.second().getClass().getSimpleName() + " says there is an error in the connect process for " + hostId + " due to " + e.getMessage(), e);
handleDisconnect(attache, Event.AgentDisconnected, false);
throw new CloudRuntimeException("Unable to connect " + attache.getId(), e);
}
}
}
}
Long dcId = host.getDataCenterId();
ReadyCommand ready = new ReadyCommand(dcId);
Answer answer = easySend(hostId, ready);
if (answer == null || !answer.getResult()) {
// this is tricky part for secondary storage
// make it as disconnected, wait for secondary storage VM to be up
// return the attache instead of null, even it is disconnectede
handleDisconnect(attache, Event.AgentDisconnected, false);
}
_hostDao.updateStatus(host, Event.Ready, _nodeId);
attache.ready();
return attache;
}
protected boolean notifyCreatorsOfConnection(StartupCommand[] cmd) throws ConnectionException {
boolean handled = false;
for (Pair monitor : _creationMonitors) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Sending Connect to creator: "
+ monitor.second().getClass().getSimpleName());
}
handled = monitor.second().processInitialConnect(cmd);
if (handled) {
break;
}
}
return handled;
}
@Override
public boolean start() {
startDirectlyConnectedHosts();
if (_monitor != null) {
_monitor.start();
}
if (_connection != null) {
_connection.start();
}
return true;
}
public void startDirectlyConnectedHosts() {
List hosts = _hostDao.findDirectlyConnectedHosts();
for (HostVO host : hosts) {
loadDirectlyConnectedHost(host, false);
}
}
@SuppressWarnings("rawtypes")
protected boolean loadDirectlyConnectedHost(HostVO host, boolean forRebalance) {
String resourceName = host.getResource();
ServerResource resource = null;
try {
Class clazz = Class.forName(resourceName);
Constructor constructor = clazz.getConstructor();
resource = (ServerResource) constructor.newInstance();
} catch (ClassNotFoundException e) {
s_logger.warn("Unable to find class " + host.getResource(), e);
return false;
} catch (InstantiationException e) {
s_logger.warn("Unablet to instantiate class " + host.getResource(), e);
return false;
} catch (IllegalAccessException e) {
s_logger.warn("Illegal access " + host.getResource(), e);
return false;
} catch (SecurityException e) {
s_logger.warn("Security error on " + host.getResource(), e);
return false;
} catch (NoSuchMethodException e) {
s_logger.warn("NoSuchMethodException error on " + host.getResource(), e);
return false;
} catch (IllegalArgumentException e) {
s_logger.warn("IllegalArgumentException error on " + host.getResource(), e);
return false;
} catch (InvocationTargetException e) {
s_logger.warn("InvocationTargetException error on " + host.getResource(), e);
return false;
}
_hostDao.loadDetails(host);
HashMap params = new HashMap(host.getDetails().size() + 5);
params.putAll(host.getDetails());
params.put("guid", host.getGuid());
params.put("zone", Long.toString(host.getDataCenterId()));
if (host.getPodId() != null) {
params.put("pod", Long.toString(host.getPodId()));
}
if (host.getClusterId() != null) {
params.put("cluster", Long.toString(host.getClusterId()));
String guid = null;
ClusterVO cluster = _clusterDao.findById(host.getClusterId());
if (cluster.getGuid() == null) {
guid = host.getDetail("pool");
} else {
guid = cluster.getGuid();
}
if (guid != null && !guid.isEmpty()) {
params.put("pool", guid);
}
}
params.put("ipaddress", host.getPrivateIpAddress());
params.put("secondary.storage.vm", "false");
params.put("max.template.iso.size", _configDao.getValue("max.template.iso.size"));
try {
resource.configure(host.getName(), params);
} catch (ConfigurationException e) {
e.printStackTrace();
s_logger.warn("Unable to configure resource due to ", e);
return false;
}
if (!resource.start()) {
s_logger.warn("Unable to start the resource");
return false;
}
if (forRebalance) {
AgentAttache attache = simulateStart(host.getId(), resource, host.getDetails(), false, null, null, true);
if (attache == null) {
return false;
} else {
return true;
}
} else {
_executor.execute(new SimulateStartTask(host.getId(), resource, host.getDetails(), null));
return true;
}
}
@Override
public AgentAttache simulateStart(Long id, ServerResource resource, Map details, boolean old, List hostTags, String allocationState, boolean forRebalance) throws IllegalArgumentException {
HostVO host = null;
if (id != null) {
synchronized (_loadingAgents) {
s_logger.debug("Adding to loading agents " + id);
_loadingAgents.add(id);
}
}
AgentAttache attache = null;
StartupCommand[] cmds = null;
try {
if (id != null) {
host = _hostDao.findById(id);
if (!_hostDao.directConnect(host, _nodeId)) {
s_logger.info("MS " + host.getManagementServerId() + " is loading " + host);
return null;
}
}
cmds = resource.initialize();
if (cmds == null) {
s_logger.info("Unable to fully initialize the agent because no StartupCommands are returned");
return null;
}
if (host != null) {
if (!_hostDao.directConnect(host, _nodeId)) {
host = _hostDao.findById(id);
s_logger.info("MS " + host.getManagementServerId() + " is loading " + host + " after it has been initialized.");
return null;
}
}
if (s_logger.isDebugEnabled()) {
new Request(-1l, -1l, cmds, true, false).logD("Startup request from directly connected host: ", true);
}
try {
attache = handleDirectConnect(resource, cmds, details, old, hostTags, allocationState, forRebalance);
} catch (IllegalArgumentException ex) {
s_logger.warn("Unable to connect due to ", ex);
throw ex;
} catch (Exception e) {
s_logger.warn("Unable to connect due to ", e);
}
} finally {
if (id != null) {
synchronized (_loadingAgents) {
_loadingAgents.remove(id);
}
}
if (attache == null) {
if (cmds != null) {
resource.disconnected();
}
if (host != null) {
_hostDao.updateStatus(host, Event.AgentDisconnected, _nodeId);
}
}
}
return attache;
}
@Override
public boolean stop() {
if (_monitor != null) {
_monitor.signalStop();
}
if (_connection != null) {
_connection.stop();
}
s_logger.info("Disconnecting agents: " + _agents.size());
synchronized (_agents) {
for (final AgentAttache agent : _agents.values()) {
final HostVO host = _hostDao.findById(agent.getId());
if (host == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cant not find host " + agent.getId());
}
} else {
_hostDao.updateStatus(host, Event.ManagementServerDown, _nodeId);
}
}
}
return true;
}
@Override
public Pair findPod(final VirtualMachineTemplate template, ServiceOfferingVO offering, final DataCenterVO dc, final long accountId, Set avoids) {
final Enumeration en = _podAllocators.enumeration();
while (en.hasMoreElements()) {
final PodAllocator allocator = (PodAllocator) en.nextElement();
final Pair pod = allocator.allocateTo(template, offering, dc, accountId, avoids);
if (pod != null) {
return pod;
}
}
return null;
}
@Override
public HostStats getHostStatistics(long hostId) {
Answer answer = easySend(hostId, new GetHostStatsCommand(_hostDao.findById(hostId).getGuid(), _hostDao.findById(hostId).getName(), hostId));
if (answer != null && (answer instanceof UnsupportedAnswer)) {
return null;
}
if (answer == null || !answer.getResult()) {
String msg = "Unable to obtain host " + hostId + " statistics. ";
s_logger.warn(msg);
return null;
} else {
// now construct the result object
if (answer instanceof GetHostStatsAnswer) {
return ((GetHostStatsAnswer) answer).getHostStats();
}
}
return null;
}
@Override
public Long getGuestOSCategoryId(long hostId) {
HostVO host = _hostDao.findById(hostId);
if (host == null) {
return null;
} else {
_hostDao.loadDetails(host);
DetailVO detail = _hostDetailsDao.findDetail(hostId, "guest.os.category.id");
if (detail == null) {
return null;
} else {
return Long.parseLong(detail.getValue());
}
}
}
@Override
public String getHostTags(long hostId) {
List hostTags = _hostTagsDao.gethostTags(hostId);
if (hostTags == null) {
return null;
} else {
return StringUtils.listToCsvTags(hostTags);
}
}
@Override
public String getName() {
return _name;
}
protected class DisconnectTask implements Runnable {
AgentAttache _attache;
Status.Event _event;
boolean _investigate;
DisconnectTask(final AgentAttache attache, final Status.Event event, final boolean investigate) {
_attache = attache;
_event = event;
_investigate = investigate;
}
@Override
public void run() {
try {
handleDisconnect(_attache, _event, _investigate);
} catch (final Exception e) {
s_logger.error("Exception caught while handling disconnect: ", e);
} finally {
StackMaid.current().exitCleanup();
}
}
}
@Override
public Answer easySend(final Long hostId, final Command cmd) {
return easySend(hostId, cmd, _wait);
}
@Override
public Answer easySend(final Long hostId, final Command cmd, int timeout) {
try {
Host h = _hostDao.findById(hostId);
if (h == null || h.getRemoved() != null) {
s_logger.debug("Host with id " + hostId.toString() + " doesn't exist");
return null;
}
Status status = h.getStatus();
if (!status.equals(Status.Up) && !status.equals(Status.Connecting)) {
return null;
}
final Answer answer = send(hostId, cmd, timeout);
if (answer == null) {
s_logger.warn("send returns null answer");
return null;
}
if (s_logger.isDebugEnabled() && answer.getDetails() != null) {
s_logger.debug("Details from executing " + cmd.getClass().toString() + ": " + answer.getDetails());
}
return answer;
} catch (final AgentUnavailableException e) {
s_logger.warn(e.getMessage());
return null;
} catch (final OperationTimedoutException e) {
s_logger.warn("Operation timed out: " + e.getMessage());
return null;
} catch (final Exception e) {
s_logger.warn("Exception while sending", e);
return null;
}
}
@Override
public Answer send(final Long hostId, final Command cmd) throws AgentUnavailableException, OperationTimedoutException {
return send(hostId, cmd, _wait);
}
@Override
public Answer[] send(final Long hostId, Commands cmds) throws AgentUnavailableException, OperationTimedoutException {
return send(hostId, cmds, _wait);
}
@Override
public boolean reconnect(final long hostId) throws AgentUnavailableException {
HostVO host;
host = _hostDao.findById(hostId);
if (host == null || host.getRemoved() != null) {
s_logger.warn("Unable to find host " + hostId);
return false;
}
if (host.getStatus() != Status.Up && host.getStatus() != Status.Alert) {
s_logger.info("Unable to disconnect host because it is not in the correct state: host=" + hostId + "; Status=" + host.getStatus());
return false;
}
AgentAttache attache = findAttache(hostId);
if (attache == null) {
s_logger.info("Unable to disconnect host because it is not connected to this server: " + hostId);
return false;
}
disconnect(attache, Event.ShutdownRequested, false);
return true;
}
@Override
public boolean cancelMaintenance(final long hostId) {
HostVO host;
host = _hostDao.findById(hostId);
if (host == null || host.getRemoved() != null) {
s_logger.warn("Unable to find host " + hostId);
return true;
}
if (host.getStatus() != Status.PrepareForMaintenance && host.getStatus() != Status.Maintenance && host.getStatus() != Status.ErrorInMaintenance) {
return true;
}
_haMgr.cancelScheduledMigrations(host);
List vms = _haMgr.findTakenMigrationWork();
for (VMInstanceVO vm : vms) {
if (vm.getHostId() != null && vm.getHostId() == hostId) {
s_logger.info("Unable to cancel migration because the vm is being migrated: " + vm.toString());
return false;
}
}
disconnect(hostId, Event.ResetRequested, false);
return true;
}
@Override
public boolean executeUserRequest(long hostId, Event event) throws AgentUnavailableException {
if (event == Event.MaintenanceRequested) {
return maintain(hostId);
} else if (event == Event.ResetRequested) {
return cancelMaintenance(hostId);
} else if (event == Event.Remove) {
User caller = _accountMgr.getActiveUser(User.UID_SYSTEM);
return deleteHost(hostId, false, false, caller);
} else if (event == Event.AgentDisconnected) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Received agent disconnect event for host " + hostId);
}
AgentAttache attache = null;
attache = findAttache(hostId);
if (attache != null) {
handleDisconnect(attache, Event.AgentDisconnected, false);
}
return true;
} else if (event == Event.ShutdownRequested) {
return reconnect(hostId);
}
else if (event == Event.UpdatePassword) {
AgentAttache attache = findAttache(hostId);
if (attache != null) {
DetailVO nv = _detailsDao.findDetail(hostId, ApiConstants.USERNAME);
String username = nv.getValue();
nv = _detailsDao.findDetail(hostId, ApiConstants.PASSWORD);
String password = nv.getValue();
UpdateHostPasswordCommand cmd = new UpdateHostPasswordCommand(username, password);
attache.updatePassword(cmd);
return true;
}
}
return false;
}
@Override
public boolean maintain(final long hostId) throws AgentUnavailableException {
HostVO host = _hostDao.findById(hostId);
Status state;
MaintainAnswer answer = (MaintainAnswer) easySend(hostId, new MaintainCommand());
if (answer == null || !answer.getResult()) {
s_logger.warn("Unable to put host in maintainance mode: " + hostId);
return false;
}
// Let's put this guy in maintenance state
do {
host = _hostDao.findById(hostId);
if (host == null) {
s_logger.debug("Unable to find host " + hostId);
return false;
}
state = host.getStatus();
if (state == Status.Disconnected || state == Status.Updating) {
s_logger.debug("Unable to put host " + hostId + " in matinenance mode because it is currently in " + state.toString());
throw new AgentUnavailableException("Agent is in " + state.toString() + " state. Please wait for it to become Alert state try again.", hostId);
}
} while (!_hostDao.updateStatus(host, Event.MaintenanceRequested, _nodeId));
AgentAttache attache = findAttache(hostId);
if (attache != null) {
attache.setMaintenanceMode(true);
}
if (attache != null) {
// Now cancel all of the commands except for the active one.
attache.cancelAllCommands(Status.PrepareForMaintenance, false);
}
final Host.Type type = host.getType();
if (type == Host.Type.Routing) {
final List vms = _vmDao.listByHostId(hostId);
if (vms.size() == 0) {
return true;
}
List hosts = _hostDao.listBy(host.getClusterId(), host.getPodId(), host.getDataCenterId());
for (final VMInstanceVO vm : vms) {
if (hosts == null || hosts.size() <= 1 || !answer.getMigrate()) {
// for the last host in this cluster, stop all the VMs
_haMgr.scheduleStop(vm, hostId, WorkType.ForceStop);
} else {
_haMgr.scheduleMigration(vm);
}
}
}
return true;
}
public boolean checkCIDR(Host.Type type, HostPodVO pod, String serverPrivateIP, String serverPrivateNetmask) {
if (serverPrivateIP == null) {
return true;
}
// Get the CIDR address and CIDR size
String cidrAddress = pod.getCidrAddress();
long cidrSize = pod.getCidrSize();
// If the server's private IP address is not in the same subnet as the
// pod's CIDR, return false
String cidrSubnet = NetUtils.getCidrSubNet(cidrAddress, cidrSize);
String serverSubnet = NetUtils.getSubNet(serverPrivateIP, serverPrivateNetmask);
if (!cidrSubnet.equals(serverSubnet)) {
return false;
}
// If the server's private netmask is less inclusive than the pod's CIDR
// netmask, return false
String cidrNetmask = NetUtils.getCidrSubNet("255.255.255.255", cidrSize);
long cidrNetmaskNumeric = NetUtils.ip2Long(cidrNetmask);
long serverNetmaskNumeric = NetUtils.ip2Long(serverPrivateNetmask);
if (serverNetmaskNumeric > cidrNetmaskNumeric) {
return false;
}
return true;
}
protected void checkCIDR(Host.Type type, HostPodVO pod, DataCenterVO dc, String serverPrivateIP, String serverPrivateNetmask) throws IllegalArgumentException {
// Skip this check for Storage Agents and Console Proxies
if (type == Host.Type.Storage || type == Host.Type.ConsoleProxy) {
return;
}
if (serverPrivateIP == null) {
return;
}
// Get the CIDR address and CIDR size
String cidrAddress = pod.getCidrAddress();
long cidrSize = pod.getCidrSize();
// If the server's private IP address is not in the same subnet as the
// pod's CIDR, return false
String cidrSubnet = NetUtils.getCidrSubNet(cidrAddress, cidrSize);
String serverSubnet = NetUtils.getSubNet(serverPrivateIP, serverPrivateNetmask);
if (!cidrSubnet.equals(serverSubnet)) {
s_logger.warn("The private ip address of the server (" + serverPrivateIP + ") is not compatible with the CIDR of pod: " + pod.getName() + " and zone: " + dc.getName());
throw new IllegalArgumentException("The private ip address of the server (" + serverPrivateIP + ") is not compatible with the CIDR of pod: " + pod.getName() + " and zone: " + dc.getName());
}
// If the server's private netmask is less inclusive than the pod's CIDR
// netmask, return false
String cidrNetmask = NetUtils.getCidrSubNet("255.255.255.255", cidrSize);
long cidrNetmaskNumeric = NetUtils.ip2Long(cidrNetmask);
long serverNetmaskNumeric = NetUtils.ip2Long(serverPrivateNetmask);
if (serverNetmaskNumeric > cidrNetmaskNumeric) {
throw new IllegalArgumentException("The private ip address of the server (" + serverPrivateIP + ") is not compatible with the CIDR of pod: " + pod.getName() + " and zone: " + dc.getName());
}
}
public void checkIPConflicts(Host.Type type, HostPodVO pod, DataCenterVO dc, String serverPrivateIP, String serverPrivateNetmask, String serverPublicIP, String serverPublicNetmask) {
// If the server's private IP is the same as is public IP, this host has
// a host-only private network. Don't check for conflicts with the
// private IP address table.
if (serverPrivateIP != serverPublicIP) {
if (!_privateIPAddressDao.mark(dc.getId(), pod.getId(), serverPrivateIP)) {
// If the server's private IP address is already in the
// database, return false
List existingPrivateIPs = _privateIPAddressDao.listByPodIdDcIdIpAddress(pod.getId(), dc.getId(), serverPrivateIP);
assert existingPrivateIPs.size() <= 1 : " How can we get more than one ip address with " + serverPrivateIP;
if (existingPrivateIPs.size() > 1) {
throw new IllegalArgumentException("The private ip address of the server (" + serverPrivateIP + ") is already in use in pod: " + pod.getName() + " and zone: " + dc.getName());
}
if (existingPrivateIPs.size() == 1) {
DataCenterIpAddressVO vo = existingPrivateIPs.get(0);
if (vo.getInstanceId() != null) {
throw new IllegalArgumentException("The private ip address of the server (" + serverPrivateIP + ") is already in use in pod: " + pod.getName() + " and zone: " + dc.getName());
}
}
}
}
if (serverPublicIP != null && !_publicIPAddressDao.mark(dc.getId(), new Ip(serverPublicIP))) {
// If the server's public IP address is already in the database,
// return false
List existingPublicIPs = _publicIPAddressDao.listByDcIdIpAddress(dc.getId(), serverPublicIP);
if (existingPublicIPs.size() > 0) {
throw new IllegalArgumentException("The public ip address of the server (" + serverPublicIP + ") is already in use in zone: " + dc.getName());
}
}
}
@Override
public Host addHost(long zoneId, ServerResource resource, Type hostType, Map hostDetails) {
// Check if the zone exists in the system
if (_dcDao.findById(zoneId) == null) {
throw new InvalidParameterValueException("Can't find zone with id " + zoneId);
}
Map details = hostDetails;
String guid = details.get("guid");
List currentHosts = _hostDao.listBy(hostType, zoneId);
for (HostVO currentHost : currentHosts) {
if (currentHost.getGuid().equals(guid)) {
return currentHost;
}
}
AgentAttache attache = simulateStart(null, resource, hostDetails, true, null, null, false);
return _hostDao.findById(attache.getId());
}
public HostVO createHost(final StartupCommand startup, ServerResource resource, Map details, boolean directFirst, List hostTags, String allocationState)
throws IllegalArgumentException {
Host.Type type = null;
if (startup instanceof StartupStorageCommand) {
StartupStorageCommand ssCmd = ((StartupStorageCommand) startup);
if (ssCmd.getHostType() == Host.Type.SecondaryStorageCmdExecutor) {
type = ssCmd.getHostType();
} else {
if (ssCmd.getResourceType() == Storage.StorageResourceType.SECONDARY_STORAGE) {
type = Host.Type.SecondaryStorage;
if (resource != null && resource instanceof DummySecondaryStorageResource) {
resource = null;
}
}else if (ssCmd.getResourceType() == Storage.StorageResourceType.LOCAL_SECONDARY_STORAGE) {
type = Host.Type.LocalSecondaryStorage;
} else {
type = Host.Type.Storage;
}
final Map hostDetails = ssCmd.getHostDetails();
if (hostDetails != null) {
if (details != null) {
details.putAll(hostDetails);
} else {
details = hostDetails;
}
}
}
} else if (startup instanceof StartupRoutingCommand) {
StartupRoutingCommand ssCmd = ((StartupRoutingCommand) startup);
type = Host.Type.Routing;
final Map hostDetails = ssCmd.getHostDetails();
if (hostDetails != null) {
if (details != null) {
details.putAll(hostDetails);
} else {
details = hostDetails;
}
}
} else if (startup instanceof StartupSecondaryStorageCommand) {
type = Host.Type.SecondaryStorageVM;
} else if (startup instanceof StartupProxyCommand) {
type = Host.Type.ConsoleProxy;
} else if (startup instanceof StartupExternalFirewallCommand) {
type = Host.Type.ExternalFirewall;
} else if (startup instanceof StartupExternalLoadBalancerCommand) {
type = Host.Type.ExternalLoadBalancer;
} else if (startup instanceof StartupPxeServerCommand) {
type = Host.Type.PxeServer;
} else if (startup instanceof StartupExternalDhcpCommand) {
type = Host.Type.ExternalDhcp;
} else if (startup instanceof StartupTrafficMonitorCommand) {
type = Host.Type.TrafficMonitor;
} else {
assert false : "Did someone add a new Startup command?";
}
Long id = null;
HostVO server = _hostDao.findByGuid(startup.getGuid());
if (server == null) {
server = _hostDao.findByGuid(startup.getGuidWithoutResource());
}
if (server != null && server.getRemoved() == null) {
id = server.getId();
if (s_logger.isDebugEnabled()) {
s_logger.debug("Found the host " + id + " by guid: " + startup.getGuid());
}
if (directFirst) {
s_logger.debug("Old host reconnected as new");
return null;
}
} else {
server = new HostVO(startup.getGuid());
}
server.setDetails(details);
server.setHostTags(hostTags);
if (allocationState != null) {
try {
HostAllocationState hostAllocationState = Host.HostAllocationState.valueOf(allocationState);
if (hostAllocationState != null) {
server.setHostAllocationState(hostAllocationState);
}
} catch (IllegalArgumentException ex) {
s_logger.error("Unable to resolve " + allocationState + " to a valid supported host allocation State, defaulting to 'Enabled'");
server.setHostAllocationState(Host.HostAllocationState.Enabled);
}
} else {
server.setHostAllocationState(Host.HostAllocationState.Enabled);
}
updateHost(server, startup, type, _nodeId);
if (resource != null) {
server.setResource(resource.getClass().getName());
}
if (id == null) {
/*
* // ignore integrity check for agent-simulator if(!"0.0.0.0".equals(startup.getPrivateIpAddress()) &&
* !"0.0.0.0".equals(startup.getStorageIpAddress())) { if (_hostDao.findByPrivateIpAddressInDataCenter
* (server.getDataCenterId(), startup.getPrivateIpAddress()) != null) { throw newIllegalArgumentException(
* "The private ip address is already in used: " + startup.getPrivateIpAddress()); }
*
* if (_hostDao.findByPrivateIpAddressInDataCenter(server.getDataCenterId (), startup.getStorageIpAddress()) !=
* null) { throw new IllegalArgumentException ("The private ip address is already in used: " +
* startup.getStorageIpAddress()); } }
*/
if (startup instanceof StartupProxyCommand) {
server.setProxyPort(((StartupProxyCommand) startup).getProxyPort());
}
server = _hostDao.persist(server);
id = server.getId();
s_logger.info("New " + server.getType().toString() + " host connected w/ guid " + startup.getGuid() + " and id is " + id);
} else {
if (!_hostDao.connect(server, _nodeId)) {
throw new CloudRuntimeException("Agent cannot connect because the current state is " + server.getStatus().toString());
}
s_logger.info("Old " + server.getType().toString() + " host reconnected w/ id =" + id);
}
return server;
}
public HostVO createHost(final StartupCommand[] startup, ServerResource resource, Map details, boolean directFirst, List hostTags, String allocationState)
throws IllegalArgumentException {
StartupCommand firstCmd = startup[0];
HostVO result = createHost(firstCmd, resource, details, directFirst, hostTags, allocationState);
if (result == null) {
return null;
}
return result;
}
public AgentAttache handleConnect(final Link link,
final StartupCommand[] startup) throws IllegalArgumentException,
ConnectionException {
HostVO server = null;
boolean handled = notifyCreatorsOfConnection(startup);
if (!handled) {
server = createHost(startup, null, null, false, null, null);
} else {
server = _hostDao.findByGuid(startup[0].getGuid());
}
if (server == null) {
return null;
}
long id = server.getId();
AgentAttache attache = createAttache(id, server, link);
attache = notifyMonitorsOfConnection(attache, startup, false);
return attache;
}
protected AgentAttache createAttache(long id, HostVO server, Link link) {
s_logger.debug("create ConnectedAgentAttache for " + id);
final AgentAttache attache = new ConnectedAgentAttache(this, id, link, server.getStatus() == Status.Maintenance || server.getStatus() == Status.ErrorInMaintenance
|| server.getStatus() == Status.PrepareForMaintenance);
link.attach(attache);
AgentAttache old = null;
synchronized (_agents) {
old = _agents.put(id, attache);
}
if (old != null) {
old.disconnect(Status.Removed);
}
return attache;
}
protected AgentAttache createAttache(long id, HostVO server, ServerResource resource) {
if (resource instanceof DummySecondaryStorageResource || resource instanceof KvmDummyResourceBase) {
return new DummyAttache(this, id, false);
}
s_logger.debug("create DirectAgentAttache for " + id);
final DirectAgentAttache attache = new DirectAgentAttache(this, id, resource, server.getStatus() == Status.Maintenance || server.getStatus() == Status.ErrorInMaintenance
|| server.getStatus() == Status.PrepareForMaintenance, this);
AgentAttache old = null;
synchronized (_agents) {
old = _agents.put(id, attache);
}
if (old != null) {
old.disconnect(Status.Removed);
}
return attache;
}
@Override
public boolean maintenanceFailed(long hostId) {
HostVO host = _hostDao.findById(hostId);
if (host == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cant not find host " + hostId);
}
return false;
} else {
return _hostDao.updateStatus(host, Event.UnableToMigrate, _nodeId);
}
}
protected void updateHost(final HostVO host, final StartupCommand startup, final Host.Type type, final long msId) throws IllegalArgumentException {
s_logger.debug("updateHost() called");
String dataCenter = startup.getDataCenter();
String pod = startup.getPod();
String cluster = startup.getCluster();
if (pod != null && dataCenter != null && pod.equalsIgnoreCase("default") && dataCenter.equalsIgnoreCase("default")) {
List pods = _podDao.listAllIncludingRemoved();
for (HostPodVO hpv : pods) {
if (checkCIDR(type, hpv, startup.getPrivateIpAddress(), startup.getPrivateNetmask())) {
pod = hpv.getName();
dataCenter = _dcDao.findById(hpv.getDataCenterId()).getName();
break;
}
}
}
long dcId = -1;
DataCenterVO dc = _dcDao.findByName(dataCenter);
if (dc == null) {
try {
dcId = Long.parseLong(dataCenter);
dc = _dcDao.findById(dcId);
} catch (final NumberFormatException e) {
}
}
if (dc == null) {
throw new IllegalArgumentException("Host " + startup.getPrivateIpAddress() + " sent incorrect data center: " + dataCenter);
}
dcId = dc.getId();
HostPodVO p = _podDao.findByName(pod, dcId);
if (p == null) {
try {
final long podId = Long.parseLong(pod);
p = _podDao.findById(podId);
} catch (final NumberFormatException e) {
}
}
Long podId = null;
if (p == null) {
if (type != Host.Type.SecondaryStorage && type != Host.Type.ExternalFirewall && type != Host.Type.ExternalLoadBalancer && type != Host.Type.TrafficMonitor) {
/*
* s_logger.info("Unable to find the pod so we are creating one." ); p = createPod(pod, dcId,
* startup.getPrivateIpAddress(), NetUtils.getCidrSize(startup.getPrivateNetmask())); podId = p.getId();
*/
s_logger.error("Host " + startup.getPrivateIpAddress() + " sent incorrect pod: " + pod + " in " + dataCenter);
throw new IllegalArgumentException("Host " + startup.getPrivateIpAddress() + " sent incorrect pod: " + pod + " in " + dataCenter);
}
} else {
podId = p.getId();
}
Long clusterId = null;
if (cluster != null) {
try {
clusterId = Long.valueOf(cluster);
} catch (NumberFormatException e) {
ClusterVO c = _clusterDao.findBy(cluster, podId);
if (c == null) {
c = new ClusterVO(dcId, podId, cluster);
c = _clusterDao.persist(c);
}
clusterId = c.getId();
}
}
if (type == Host.Type.Routing) {
StartupRoutingCommand scc = (StartupRoutingCommand) startup;
HypervisorType hypervisorType = scc.getHypervisorType();
boolean doCidrCheck = true;
ClusterVO clusterVO = _clusterDao.findById(clusterId);
if (clusterVO.getHypervisorType() != scc.getHypervisorType()) {
throw new IllegalArgumentException("Can't add host whose hypervisor type is: " + scc.getHypervisorType() + " into cluster: " + clusterId + " whose hypervisor type is: "
+ clusterVO.getHypervisorType());
}
/*
* KVM:Enforcement that all the hosts in the cluster have the same os type, for migration
*/
if (scc.getHypervisorType() == HypervisorType.KVM) {
List hostsInCluster = _hostDao.listByCluster(clusterId);
if (!hostsInCluster.isEmpty()) {
HostVO oneHost = hostsInCluster.get(0);
_hostDao.loadDetails(oneHost);
String hostOsInCluster = oneHost.getDetail("Host.OS");
String hostOs = scc.getHostDetails().get("Host.OS");
if (!hostOsInCluster.equalsIgnoreCase(hostOs)) {
throw new IllegalArgumentException("Can't add host: " + startup.getPrivateIpAddress() + " with hostOS: " + hostOs + " into a cluster," + "in which there are "
+ hostOsInCluster + " hosts added");
}
}
}
// If this command is from the agent simulator, don't do the CIDR
// check
if (scc.getAgentTag() != null && startup.getAgentTag().equalsIgnoreCase("vmops-simulator")) {
doCidrCheck = false;
}
// If this command is from a KVM agent, or from an agent that has a
// null hypervisor type, don't do the CIDR check
if (hypervisorType == null || hypervisorType == HypervisorType.KVM || hypervisorType == HypervisorType.VMware || hypervisorType == HypervisorType.BareMetal
|| hypervisorType == HypervisorType.Simulator) {
doCidrCheck = false;
}
if (doCidrCheck) {
s_logger.info("Host: " + host.getName() + " connected with hypervisor type: " + hypervisorType + ". Checking CIDR...");
} else {
s_logger.info("Host: " + host.getName() + " connected with hypervisor type: " + hypervisorType + ". Skipping CIDR check...");
}
if (doCidrCheck) {
checkCIDR(type, p, dc, scc.getPrivateIpAddress(), scc.getPrivateNetmask());
}
// Check if the private/public IPs of the server are already in the
// private/public IP address tables
checkIPConflicts(type, p, dc, scc.getPrivateIpAddress(), scc.getPublicIpAddress(), scc.getPublicIpAddress(), scc.getPublicNetmask());
}
host.setDataCenterId(dc.getId());
host.setPodId(podId);
host.setClusterId(clusterId);
host.setPrivateIpAddress(startup.getPrivateIpAddress());
host.setPrivateNetmask(startup.getPrivateNetmask());
host.setPrivateMacAddress(startup.getPrivateMacAddress());
host.setPublicIpAddress(startup.getPublicIpAddress());
host.setPublicMacAddress(startup.getPublicMacAddress());
host.setPublicNetmask(startup.getPublicNetmask());
host.setStorageIpAddress(startup.getStorageIpAddress());
host.setStorageMacAddress(startup.getStorageMacAddress());
host.setStorageNetmask(startup.getStorageNetmask());
host.setVersion(startup.getVersion());
host.setName(startup.getName());
host.setType(type);
host.setManagementServerId(msId);
host.setStorageUrl(startup.getIqn());
host.setLastPinged(System.currentTimeMillis() >> 10);
if (startup instanceof StartupRoutingCommand) {
final StartupRoutingCommand scc = (StartupRoutingCommand) startup;
host.setCaps(scc.getCapabilities());
host.setCpus(scc.getCpus());
host.setTotalMemory(scc.getMemory());
host.setSpeed(scc.getSpeed());
HypervisorType hyType = scc.getHypervisorType();
host.setHypervisorType(hyType);
} else if (startup instanceof StartupStorageCommand) {
final StartupStorageCommand ssc = (StartupStorageCommand) startup;
host.setParent(ssc.getParent());
host.setTotalSize(ssc.getTotalSize());
host.setHypervisorType(HypervisorType.None);
if (ssc.getNfsShare() != null) {
host.setStorageUrl(ssc.getNfsShare());
}
}
if (startup.getStorageIpAddressDeux() != null) {
host.setStorageIpAddressDeux(startup.getStorageIpAddressDeux());
host.setStorageMacAddressDeux(startup.getStorageMacAddressDeux());
host.setStorageNetmaskDeux(startup.getStorageNetmaskDeux());
}
}
// protected void upgradeAgent(final Link link, final byte[] request, final
// String reason) {
//
// if (reason == UnsupportedVersionException.IncompatibleVersion) {
// final UpgradeResponse response = new UpgradeResponse(request,
// _upgradeMgr.getAgentUrl());
// try {
// s_logger.info("Asking for the agent to update due to incompatible version: "
// + response.toString());
// link.send(response.toBytes());
// } catch (final ClosedChannelException e) {
// s_logger.warn("Unable to send response due to connection closed: " +
// response.toString());
// }
// return;
// }
//
// assert (reason == UnsupportedVersionException.UnknownVersion) :
// "Unknown reason: " + reason;
// final UpgradeResponse response = new UpgradeResponse(request,
// _upgradeMgr.getAgentUrl());
// try {
// s_logger.info("Asking for the agent to update due to unknown version: " +
// response.toString());
// link.send(response.toBytes());
// } catch (final ClosedChannelException e) {
// s_logger.warn("Unable to send response due to connection closed: " +
// response.toString());
// }
// }
protected class SimulateStartTask implements Runnable {
ServerResource resource;
Map details;
long id;
ActionDelegate actionDelegate;
public SimulateStartTask(long id, ServerResource resource, Map details, ActionDelegate actionDelegate) {
this.id = id;
this.resource = resource;
this.details = details;
this.actionDelegate = actionDelegate;
}
@Override
public void run() {
try {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Simulating start for resource " + resource.getName() + " id " + id);
}
simulateStart(id, resource, details, false, null, null, false);
} catch (Exception e) {
s_logger.warn("Unable to simulate start on resource " + id + " name " + resource.getName(), e);
} finally {
if (actionDelegate != null) {
actionDelegate.action(new Long(id));
}
StackMaid.current().exitCleanup();
}
}
}
public class AgentHandler extends Task {
public AgentHandler(Task.Type type, Link link, byte[] data) {
super(type, link, data);
}
protected void processRequest(final Link link, final Request request) {
AgentAttache attache = (AgentAttache) link.attachment();
final Command[] cmds = request.getCommands();
Command cmd = cmds[0];
boolean logD = true;
Response response = null;
if (attache == null) {
request.logD("Processing the first command ");
if (!(cmd instanceof StartupCommand)) {
s_logger.warn("Throwing away a request because it came through as the first command on a connect: " + request.toString());
return;
}
StartupCommand startup = (StartupCommand) cmd;
// if ((_upgradeMgr.registerForUpgrade(-1, startup.getVersion())
// == UpgradeManager.State.RequiresUpdate) &&
// (_upgradeMgr.getAgentUrl() != null)) {
// final UpgradeCommand upgrade = new
// UpgradeCommand(_upgradeMgr.getAgentUrl());
// final Request req = new Request(1, -1, -1, new Command[] {
// upgrade }, true, true);
// s_logger.info("Agent requires upgrade: " + req.toString());
// try {
// link.send(req.toBytes());
// } catch (ClosedChannelException e) {
// s_logger.warn("Unable to tell agent it should update.");
// }
// return;
// }
try {
StartupCommand[] startups = new StartupCommand[cmds.length];
for (int i = 0; i < cmds.length; i++) {
startups[i] = (StartupCommand) cmds[i];
}
attache = handleConnect(link, startups);
} catch (final IllegalArgumentException e) {
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, 0, new Long(0), "Agent from " + startup.getPrivateIpAddress() + " is unable to connect due to " + e.getMessage(), "Agent from "
+ startup.getPrivateIpAddress() + " is unable to connect with " + request.toString() + " because of " + e.getMessage());
s_logger.warn("Unable to create attache for agent: " + request.toString(), e);
response = new Response(request, new StartupAnswer((StartupCommand) cmd, e.getMessage()), _nodeId, -1);
} catch (ConnectionException e) {
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, 0, new Long(0), "Agent from " + startup.getPrivateIpAddress() + " is unable to connect due to " + e.getMessage(), "Agent from "
+ startup.getPrivateIpAddress() + " is unable to connect with " + request.toString() + " because of " + e.getMessage());
s_logger.warn("Unable to create attache for agent: " + request.toString(), e);
response = new Response(request, new StartupAnswer((StartupCommand) cmd, e.getMessage()), _nodeId, -1);
} catch (final CloudRuntimeException e) {
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_HOST, 0, new Long(0), "Agent from " + startup.getPrivateIpAddress() + " is unable to connect due to " + e.getMessage(), "Agent from "
+ startup.getPrivateIpAddress() + " is unable to connect with " + request.toString() + " because of " + e.getMessage());
s_logger.warn("Unable to create attache for agent: " + request.toString(), e);
}
if (attache == null) {
if (response == null) {
s_logger.warn("Unable to create attache for agent: " + request.toString());
response = new Response(request, new StartupAnswer((StartupCommand) request.getCommand(), "Unable to register this agent"), _nodeId, -1);
}
try {
link.send(response.toBytes(), true);
} catch (final ClosedChannelException e) {
s_logger.warn("Response was not sent: " + response.toString());
}
return;
}
}
final long hostId = attache.getId();
if (s_logger.isDebugEnabled()) {
if (cmd instanceof PingRoutingCommand) {
final PingRoutingCommand ping = (PingRoutingCommand) cmd;
if (ping.getNewStates().size() > 0) {
s_logger.debug("SeqA " + hostId + "-" + request.getSequence() + ": Processing " + request.toString());
} else {
logD = false;
s_logger.debug("Ping from " + hostId);
s_logger.trace("SeqA " + hostId + "-" + request.getSequence() + ": Processing " + request.toString());
}
} else if (cmd instanceof PingCommand) {
logD = false;
s_logger.debug("Ping from " + hostId);
s_logger.trace("SeqA " + attache.getId() + "-" + request.getSequence() + ": Processing " + request.toString());
} else {
s_logger.debug("SeqA " + attache.getId() + "-" + request.getSequence() + ": Processing " + request.toString());
}
}
final Answer[] answers = new Answer[cmds.length];
for (int i = 0; i < cmds.length; i++) {
cmd = cmds[i];
Answer answer = null;
try {
if (cmd instanceof StartupRoutingCommand) {
final StartupRoutingCommand startup = (StartupRoutingCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupProxyCommand) {
final StartupProxyCommand startup = (StartupProxyCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupSecondaryStorageCommand) {
final StartupSecondaryStorageCommand startup = (StartupSecondaryStorageCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupStorageCommand) {
final StartupStorageCommand startup = (StartupStorageCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof ShutdownCommand) {
final ShutdownCommand shutdown = (ShutdownCommand) cmd;
final String reason = shutdown.getReason();
s_logger.info("Host " + attache.getId() + " has informed us that it is shutting down with reason " + reason + " and detail " + shutdown.getDetail());
if (reason.equals(ShutdownCommand.Update)) {
disconnect(attache, Event.UpdateNeeded, false);
} else if (reason.equals(ShutdownCommand.Requested)) {
disconnect(attache, Event.ShutdownRequested, false);
}
return;
} else if (cmd instanceof AgentControlCommand) {
answer = handleControlCommand(attache, (AgentControlCommand) cmd);
} else {
handleCommands(attache, request.getSequence(), new Command[] { cmd });
if (cmd instanceof PingCommand) {
long cmdHostId = ((PingCommand) cmd).getHostId();
// if the router is sending a ping, verify the
// gateway was pingable
if (cmd instanceof PingRoutingCommand) {
boolean gatewayAccessible = ((PingRoutingCommand) cmd).isGatewayAccessible();
HostVO host = _hostDao.findById(Long.valueOf(cmdHostId));
if (!gatewayAccessible) {
// alert that host lost connection to
// gateway (cannot ping the default route)
DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
HostPodVO podVO = _podDao.findById(host.getPodId());
String hostDesc = "name: " + host.getName() + " (id:" + host.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + podVO.getName();
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_ROUTING, host.getDataCenterId(), host.getPodId(), "Host lost connection to gateway, " + hostDesc, "Host [" + hostDesc
+ "] lost connection to gateway (default route) and is possibly having network connection issues.");
} else {
_alertMgr.clearAlert(AlertManager.ALERT_TYPE_ROUTING, host.getDataCenterId(), host.getPodId());
}
}
answer = new PingAnswer((PingCommand) cmd);
} else if (cmd instanceof ReadyAnswer) {
HostVO host = _hostDao.findById(attache.getId());
if (host == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cant not find host " + attache.getId());
}
}
answer = new Answer(cmd);
} else {
answer = new Answer(cmd);
}
}
} catch (final Throwable th) {
s_logger.warn("Caught: ", th);
answer = new Answer(cmd, false, th.getMessage());
}
answers[i] = answer;
}
response = new Response(request, answers, _nodeId, attache.getId());
if (s_logger.isDebugEnabled()) {
if (logD) {
s_logger.debug("SeqA " + attache.getId() + "-" + response.getSequence() + ": Sending " + response.toString());
} else {
s_logger.trace("SeqA " + attache.getId() + "-" + response.getSequence() + ": Sending " + response.toString());
}
}
try {
link.send(response.toBytes());
} catch (final ClosedChannelException e) {
s_logger.warn("Unable to send response because connection is closed: " + response.toString());
}
}
protected void processResponse(final Link link, final Response response) {
final AgentAttache attache = (AgentAttache) link.attachment();
if (attache == null) {
s_logger.warn("Unable to process: " + response.toString());
}
if (!attache.processAnswers(response.getSequence(), response)) {
s_logger.info("Host " + attache.getId() + " - Seq " + response.getSequence() + ": Response is not processed: " + response.toString());
}
}
@Override
protected void doTask(final Task task) throws Exception {
Transaction txn = Transaction.open(Transaction.CLOUD_DB);
try {
final Type type = task.getType();
if (type == Task.Type.DATA) {
final byte[] data = task.getData();
try {
final Request event = Request.parse(data);
if (event instanceof Response) {
processResponse(task.getLink(), (Response) event);
} else {
processRequest(task.getLink(), event);
}
} catch (final UnsupportedVersionException e) {
s_logger.warn(e.getMessage());
// upgradeAgent(task.getLink(), data, e.getReason());
}
} else if (type == Task.Type.CONNECT) {
} else if (type == Task.Type.DISCONNECT) {
final Link link = task.getLink();
final AgentAttache attache = (AgentAttache) link.attachment();
if (attache != null) {
disconnect(attache, Event.AgentDisconnected, true);
} else {
s_logger.info("Connection from " + link.getIpAddress() + " closed but no cleanup was done.");
link.close();
link.terminated();
}
}
} finally {
StackMaid.current().exitCleanup();
txn.close();
}
}
}
protected AgentManagerImpl() {
}
}