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From seb...@apache.org
Subject [6/9] Squashed commits
Date Mon, 12 May 2014 07:16:40 GMT
http://git-wip-us.apache.org/repos/asf/cloudstack/blob/aded3037/plugins/hypervisors/xen/src/com/cloud/hypervisor/xen/resource/CitrixResourceBase.java
----------------------------------------------------------------------
diff --git a/plugins/hypervisors/xen/src/com/cloud/hypervisor/xen/resource/CitrixResourceBase.java b/plugins/hypervisors/xen/src/com/cloud/hypervisor/xen/resource/CitrixResourceBase.java
deleted file mode 100644
index 626a219..0000000
--- a/plugins/hypervisors/xen/src/com/cloud/hypervisor/xen/resource/CitrixResourceBase.java
+++ /dev/null
@@ -1,7579 +0,0 @@
-// Licensed to the Apache Software Foundation (ASF) under one
-// or more contributor license agreements.  See the NOTICE file
-// distributed with this work for additional information
-// regarding copyright ownership.  The ASF licenses this file
-// to you under the Apache License, Version 2.0 (the
-// "License"); you may not use this file except in compliance
-// with the License.  You may obtain a copy of the License at
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing,
-// software distributed under the License is distributed on an
-// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.  See the License for the
-// specific language governing permissions and limitations
-// under the License.
-package com.cloud.hypervisor.xen.resource;
-
-import com.cloud.agent.IAgentControl;
-import com.cloud.agent.api.Answer;
-import com.cloud.agent.api.AttachIsoCommand;
-import com.cloud.agent.api.AttachVolumeAnswer;
-import com.cloud.agent.api.AttachVolumeCommand;
-import com.cloud.agent.api.CheckHealthAnswer;
-import com.cloud.agent.api.CheckHealthCommand;
-import com.cloud.agent.api.CheckNetworkAnswer;
-import com.cloud.agent.api.CheckNetworkCommand;
-import com.cloud.agent.api.CheckOnHostAnswer;
-import com.cloud.agent.api.CheckOnHostCommand;
-import com.cloud.agent.api.CheckVirtualMachineAnswer;
-import com.cloud.agent.api.CheckVirtualMachineCommand;
-import com.cloud.agent.api.CleanupNetworkRulesCmd;
-import com.cloud.agent.api.ClusterSyncAnswer;
-import com.cloud.agent.api.ClusterSyncCommand;
-import com.cloud.agent.api.ClusterVMMetaDataSyncAnswer;
-import com.cloud.agent.api.ClusterVMMetaDataSyncCommand;
-import com.cloud.agent.api.Command;
-import com.cloud.agent.api.CreateStoragePoolCommand;
-import com.cloud.agent.api.CreateVMSnapshotAnswer;
-import com.cloud.agent.api.CreateVMSnapshotCommand;
-import com.cloud.agent.api.DeleteStoragePoolCommand;
-import com.cloud.agent.api.DeleteVMSnapshotAnswer;
-import com.cloud.agent.api.DeleteVMSnapshotCommand;
-import com.cloud.agent.api.GetHostStatsAnswer;
-import com.cloud.agent.api.GetHostStatsCommand;
-import com.cloud.agent.api.GetStorageStatsAnswer;
-import com.cloud.agent.api.GetStorageStatsCommand;
-import com.cloud.agent.api.GetVmDiskStatsAnswer;
-import com.cloud.agent.api.GetVmDiskStatsCommand;
-import com.cloud.agent.api.GetVmStatsAnswer;
-import com.cloud.agent.api.GetVmStatsCommand;
-import com.cloud.agent.api.GetVncPortAnswer;
-import com.cloud.agent.api.GetVncPortCommand;
-import com.cloud.agent.api.HostStatsEntry;
-import com.cloud.agent.api.HostVmStateReportEntry;
-import com.cloud.agent.api.MaintainAnswer;
-import com.cloud.agent.api.MaintainCommand;
-import com.cloud.agent.api.MigrateAnswer;
-import com.cloud.agent.api.MigrateCommand;
-import com.cloud.agent.api.ModifySshKeysCommand;
-import com.cloud.agent.api.ModifyStoragePoolAnswer;
-import com.cloud.agent.api.ModifyStoragePoolCommand;
-import com.cloud.agent.api.NetworkRulesSystemVmCommand;
-import com.cloud.agent.api.NetworkRulesVmSecondaryIpCommand;
-import com.cloud.agent.api.OvsCreateGreTunnelAnswer;
-import com.cloud.agent.api.OvsCreateGreTunnelCommand;
-import com.cloud.agent.api.OvsCreateTunnelAnswer;
-import com.cloud.agent.api.OvsCreateTunnelCommand;
-import com.cloud.agent.api.OvsDeleteFlowCommand;
-import com.cloud.agent.api.OvsDestroyBridgeCommand;
-import com.cloud.agent.api.OvsDestroyTunnelCommand;
-import com.cloud.agent.api.OvsFetchInterfaceAnswer;
-import com.cloud.agent.api.OvsFetchInterfaceCommand;
-import com.cloud.agent.api.OvsSetTagAndFlowAnswer;
-import com.cloud.agent.api.OvsSetTagAndFlowCommand;
-import com.cloud.agent.api.OvsSetupBridgeCommand;
-import com.cloud.agent.api.OvsVpcPhysicalTopologyConfigCommand;
-import com.cloud.agent.api.OvsVpcRoutingPolicyConfigCommand;
-import com.cloud.agent.api.PerformanceMonitorAnswer;
-import com.cloud.agent.api.PerformanceMonitorCommand;
-import com.cloud.agent.api.PingCommand;
-import com.cloud.agent.api.PingRoutingCommand;
-import com.cloud.agent.api.PingRoutingWithNwGroupsCommand;
-import com.cloud.agent.api.PingRoutingWithOvsCommand;
-import com.cloud.agent.api.PingTestCommand;
-import com.cloud.agent.api.PlugNicAnswer;
-import com.cloud.agent.api.PlugNicCommand;
-import com.cloud.agent.api.PrepareForMigrationAnswer;
-import com.cloud.agent.api.PrepareForMigrationCommand;
-import com.cloud.agent.api.PvlanSetupCommand;
-import com.cloud.agent.api.ReadyAnswer;
-import com.cloud.agent.api.ReadyCommand;
-import com.cloud.agent.api.RebootAnswer;
-import com.cloud.agent.api.RebootCommand;
-import com.cloud.agent.api.RebootRouterCommand;
-import com.cloud.agent.api.RevertToVMSnapshotAnswer;
-import com.cloud.agent.api.RevertToVMSnapshotCommand;
-import com.cloud.agent.api.ScaleVmAnswer;
-import com.cloud.agent.api.ScaleVmCommand;
-import com.cloud.agent.api.SecurityGroupRuleAnswer;
-import com.cloud.agent.api.SecurityGroupRulesCmd;
-import com.cloud.agent.api.SetupAnswer;
-import com.cloud.agent.api.SetupCommand;
-import com.cloud.agent.api.SetupGuestNetworkCommand;
-import com.cloud.agent.api.StartAnswer;
-import com.cloud.agent.api.StartCommand;
-import com.cloud.agent.api.StartupCommand;
-import com.cloud.agent.api.StartupRoutingCommand;
-import com.cloud.agent.api.StartupStorageCommand;
-import com.cloud.agent.api.StopAnswer;
-import com.cloud.agent.api.StopCommand;
-import com.cloud.agent.api.StoragePoolInfo;
-import com.cloud.agent.api.UnPlugNicAnswer;
-import com.cloud.agent.api.UnPlugNicCommand;
-import com.cloud.agent.api.UpdateHostPasswordCommand;
-import com.cloud.agent.api.UpgradeSnapshotCommand;
-import com.cloud.agent.api.VgpuTypesInfo;
-import com.cloud.agent.api.VmStatsEntry;
-import com.cloud.agent.api.check.CheckSshAnswer;
-import com.cloud.agent.api.check.CheckSshCommand;
-import com.cloud.agent.api.proxy.CheckConsoleProxyLoadCommand;
-import com.cloud.agent.api.proxy.ConsoleProxyLoadAnswer;
-import com.cloud.agent.api.proxy.WatchConsoleProxyLoadCommand;
-import com.cloud.agent.api.routing.IpAssocCommand;
-import com.cloud.agent.api.routing.IpAssocVpcCommand;
-import com.cloud.agent.api.routing.NetworkElementCommand;
-import com.cloud.agent.api.routing.SetNetworkACLCommand;
-import com.cloud.agent.api.routing.SetSourceNatCommand;
-import com.cloud.agent.api.storage.CreateAnswer;
-import com.cloud.agent.api.storage.CreateCommand;
-import com.cloud.agent.api.storage.DestroyCommand;
-import com.cloud.agent.api.storage.PrimaryStorageDownloadAnswer;
-import com.cloud.agent.api.storage.PrimaryStorageDownloadCommand;
-import com.cloud.agent.api.storage.ResizeVolumeAnswer;
-import com.cloud.agent.api.storage.ResizeVolumeCommand;
-import com.cloud.agent.api.to.DataStoreTO;
-import com.cloud.agent.api.to.DataTO;
-import com.cloud.agent.api.to.DiskTO;
-import com.cloud.agent.api.to.GPUDeviceTO;
-import com.cloud.agent.api.to.IpAddressTO;
-import com.cloud.agent.api.to.NfsTO;
-import com.cloud.agent.api.to.NicTO;
-import com.cloud.agent.api.to.StorageFilerTO;
-import com.cloud.agent.api.to.VirtualMachineTO;
-import com.cloud.agent.api.to.VolumeTO;
-import com.cloud.agent.resource.virtualnetwork.VirtualRouterDeployer;
-import com.cloud.agent.resource.virtualnetwork.VirtualRoutingResource;
-import com.cloud.exception.InternalErrorException;
-import com.cloud.host.Host.Type;
-import com.cloud.hypervisor.Hypervisor.HypervisorType;
-import com.cloud.network.Networks;
-import com.cloud.network.Networks.BroadcastDomainType;
-import com.cloud.network.Networks.IsolationType;
-import com.cloud.network.Networks.TrafficType;
-import com.cloud.network.PhysicalNetworkSetupInfo;
-import com.cloud.resource.ServerResource;
-import com.cloud.resource.hypervisor.HypervisorResource;
-import com.cloud.storage.Storage;
-import com.cloud.storage.Storage.StoragePoolType;
-import com.cloud.storage.Volume;
-import com.cloud.storage.VolumeVO;
-import com.cloud.storage.resource.StorageSubsystemCommandHandler;
-import com.cloud.storage.resource.StorageSubsystemCommandHandlerBase;
-import com.cloud.storage.template.TemplateProp;
-import com.cloud.template.VirtualMachineTemplate.BootloaderType;
-import com.cloud.utils.ExecutionResult;
-import com.cloud.utils.NumbersUtil;
-import com.cloud.utils.Pair;
-import com.cloud.utils.StringUtils;
-import com.cloud.utils.Ternary;
-import com.cloud.utils.exception.CloudRuntimeException;
-import com.cloud.utils.net.NetUtils;
-import com.cloud.utils.ssh.SSHCmdHelper;
-import com.cloud.utils.ssh.SshHelper;
-import com.cloud.vm.DiskProfile;
-import com.cloud.vm.VirtualMachine;
-import com.cloud.vm.VirtualMachine.PowerState;
-import com.cloud.vm.VirtualMachine.State;
-import com.cloud.vm.snapshot.VMSnapshot;
-import com.trilead.ssh2.SCPClient;
-import com.xensource.xenapi.Bond;
-import com.xensource.xenapi.Connection;
-import com.xensource.xenapi.Console;
-import com.xensource.xenapi.Host;
-import com.xensource.xenapi.HostCpu;
-import com.xensource.xenapi.HostMetrics;
-import com.xensource.xenapi.Network;
-import com.xensource.xenapi.PBD;
-import com.xensource.xenapi.PIF;
-import com.xensource.xenapi.Pool;
-import com.xensource.xenapi.SR;
-import com.xensource.xenapi.Session;
-import com.xensource.xenapi.Task;
-import com.xensource.xenapi.Types;
-import com.xensource.xenapi.Types.BadServerResponse;
-import com.xensource.xenapi.Types.VmPowerState;
-import com.xensource.xenapi.Types.XenAPIException;
-import com.xensource.xenapi.VBD;
-import com.xensource.xenapi.VBDMetrics;
-import com.xensource.xenapi.VDI;
-import com.xensource.xenapi.VGPU;
-import com.xensource.xenapi.VIF;
-import com.xensource.xenapi.VLAN;
-import com.xensource.xenapi.VM;
-import com.xensource.xenapi.VMGuestMetrics;
-import com.xensource.xenapi.XenAPIObject;
-import org.apache.cloudstack.storage.command.StorageSubSystemCommand;
-import org.apache.cloudstack.storage.to.TemplateObjectTO;
-import org.apache.cloudstack.storage.to.VolumeObjectTO;
-import org.apache.log4j.Logger;
-import org.apache.xmlrpc.XmlRpcException;
-import org.w3c.dom.Document;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-
-import javax.ejb.Local;
-import javax.naming.ConfigurationException;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.MalformedURLException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.net.URLConnection;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import java.util.Queue;
-import java.util.Random;
-import java.util.Set;
-import java.util.UUID;
-
-/**
- * CitrixResourceBase encapsulates the calls to the XenServer Xapi process
- * to perform the required functionalities for CloudStack.
- *
- * ==============>  READ THIS  <==============
- * Because the XenServer objects can expire when the session expires, we cannot
- * keep any of the actual XenServer objects in this class.  The only
- * thing that is constant is the UUID of the XenServer objects but not the
- * objects themselves!  This is very important before you do any changes in
- * this code here.
- *
- */
-@Local(value = ServerResource.class)
-public abstract class CitrixResourceBase implements ServerResource, HypervisorResource, VirtualRouterDeployer {
-    private static final Logger s_logger = Logger.getLogger(CitrixResourceBase.class);
-    protected static final XenServerConnectionPool ConnPool = XenServerConnectionPool.getInstance();
-    protected String _name;
-    protected String _username;
-    protected Queue<String> _password = new LinkedList<String>();
-    protected final int _retry = 100;
-    protected final int _sleep = 10000;
-    protected long _dcId;
-    protected String _pod;
-    protected String _cluster;
-    protected static final XenServerPoolVms s_vms = new XenServerPoolVms();
-    protected String _privateNetworkName;
-    protected String _linkLocalPrivateNetworkName;
-    protected String _publicNetworkName;
-    protected String _storageNetworkName1;
-    protected String _storageNetworkName2;
-    protected String _guestNetworkName;
-    protected int _wait;
-    protected int _migratewait;
-    protected String _instance; //instance name (default is usually "VM")
-    static final Random Rand = new Random(System.currentTimeMillis());
-    protected boolean _securityGroupEnabled;
-
-    protected IAgentControl _agentControl;
-
-    final int _maxWeight = 256;
-    protected int _heartbeatInterval = 60;
-    protected final XsHost _host = new XsHost();
-
-    // Guest and Host Performance Statistics
-    protected String _consolidationFunction = "AVERAGE";
-    protected int _pollingIntervalInSeconds = 60;
-
-    //Hypervisor specific params with generic value, may need to be overridden for specific versions
-    long _xsMemoryUsed = 128 * 1024 * 1024L; // xen hypervisor used 128 M
-    double _xsVirtualizationFactor = 63.0 / 64.0;  // 1 - virtualization overhead
-
-    //static min values for guests on xen
-    private static final long mem_128m = 134217728L;
-
-    protected boolean _canBridgeFirewall = false;
-    protected boolean _isOvs = false;
-    protected List<VIF> _tmpDom0Vif = new ArrayList<VIF>();
-    protected StorageSubsystemCommandHandler storageHandler;
-    protected int _maxNics = 7;
-
-    protected VirtualRoutingResource _vrResource;
-
-    public enum SRType {
-        NFS, LVM, ISCSI, ISO, LVMOISCSI, LVMOHBA, EXT, FILE;
-
-        String _str;
-
-        private SRType() {
-            _str = super.toString().toLowerCase();
-        }
-
-        @Override
-        public String toString() {
-            return _str;
-        }
-
-        public boolean equals(String type) {
-            return _str.equalsIgnoreCase(type);
-        }
-    }
-
-    protected static final HashMap<Types.VmPowerState, PowerState> s_powerStatesTable;
-    static {
-        s_powerStatesTable = new HashMap<Types.VmPowerState, PowerState>();
-        s_powerStatesTable.put(Types.VmPowerState.HALTED, PowerState.PowerOff);
-        s_powerStatesTable.put(Types.VmPowerState.PAUSED, PowerState.PowerOff);
-        s_powerStatesTable.put(Types.VmPowerState.RUNNING, PowerState.PowerOn);
-        s_powerStatesTable.put(Types.VmPowerState.SUSPENDED, PowerState.PowerOff);
-        s_powerStatesTable.put(Types.VmPowerState.UNRECOGNIZED, PowerState.PowerUnknown);
-    }
-
-    // TODO vmsync {
-    protected static final HashMap<Types.VmPowerState, State> s_statesTable;
-    static {
-        s_statesTable = new HashMap<Types.VmPowerState, State>();
-        s_statesTable.put(Types.VmPowerState.HALTED, State.Stopped);
-        s_statesTable.put(Types.VmPowerState.PAUSED, State.Running);
-        s_statesTable.put(Types.VmPowerState.RUNNING, State.Running);
-        s_statesTable.put(Types.VmPowerState.SUSPENDED, State.Running);
-        s_statesTable.put(Types.VmPowerState.UNRECOGNIZED, State.Unknown);
-    }
-
-    // TODO vmsync }
-
-    public XsHost getHost() {
-        return _host;
-    }
-
-    private static boolean isAlienVm(VM vm, Connection conn) throws XenAPIException, XmlRpcException {
-        // TODO : we need a better way to tell whether or not the VM belongs to CloudStack
-        String vmName = vm.getNameLabel(conn);
-        if (vmName.matches("^[ivs]-\\d+-.+"))
-            return false;
-
-        return true;
-    }
-
-    protected boolean cleanupHaltedVms(Connection conn) throws XenAPIException, XmlRpcException {
-        Host host = Host.getByUuid(conn, _host.uuid);
-        Map<VM, VM.Record> vms = VM.getAllRecords(conn);
-        boolean success = true;
-        for (Map.Entry<VM, VM.Record> entry : vms.entrySet()) {
-            VM vm = entry.getKey();
-            VM.Record vmRec = entry.getValue();
-            if (vmRec.isATemplate || vmRec.isControlDomain) {
-                continue;
-            }
-
-            if (VmPowerState.HALTED.equals(vmRec.powerState) && vmRec.affinity.equals(host) && !isAlienVm(vm, conn)) {
-                try {
-                    vm.destroy(conn);
-                } catch (Exception e) {
-                    s_logger.warn("Catch Exception " + e.getClass().getName() + ": unable to destroy VM " + vmRec.nameLabel + " due to ", e);
-                    success = false;
-                }
-            }
-        }
-        return success;
-    }
-
-    protected boolean isRefNull(XenAPIObject object) {
-        return (object == null || object.toWireString().equals("OpaqueRef:NULL") || object.toWireString().equals("<not in database>"));
-    }
-
-    @Override
-    public void disconnected() {
-    }
-
-    protected boolean pingdomr(Connection conn, String host, String port) {
-        String status;
-        status = callHostPlugin(conn, "vmops", "pingdomr", "host", host, "port", port);
-
-        if (status == null || status.isEmpty()) {
-            return false;
-        }
-
-        return true;
-
-    }
-
-    protected boolean pingXAPI() {
-        Connection conn = getConnection();
-        try {
-            Host host = Host.getByUuid(conn, _host.uuid);
-            if( !host.getEnabled(conn) ) {
-                s_logger.debug("Host " + _host.ip + " is not enabled!");
-                return false;
-            }
-        } catch (Exception e) {
-            s_logger.debug("cannot get host enabled status, host " + _host.ip + " due to " + e.toString(),  e);
-            return false;
-        }
-        try {
-            callHostPlugin(conn, "echo", "main");
-        } catch (Exception e) {
-            s_logger.debug("cannot ping host " + _host.ip + " due to " + e.toString(),  e);
-            return false;
-        }
-        return true;
-    }
-
-
-    protected String logX(XenAPIObject obj, String msg) {
-        return new StringBuilder("Host ").append(_host.ip).append(" ").append(obj.toWireString()).append(": ").append(msg).toString();
-    }
-
-    @Override
-    public Answer executeRequest(Command cmd) {
-        Class<? extends Command> clazz = cmd.getClass();
-        if (clazz == CreateCommand.class) {
-            return execute((CreateCommand)cmd);
-        } else if (cmd instanceof NetworkElementCommand) {
-            return _vrResource.executeRequest((NetworkElementCommand)cmd);
-        } else if (clazz == CheckConsoleProxyLoadCommand.class) {
-            return execute((CheckConsoleProxyLoadCommand)cmd);
-        } else if (clazz == WatchConsoleProxyLoadCommand.class) {
-            return execute((WatchConsoleProxyLoadCommand)cmd);
-        } else if (clazz == ReadyCommand.class) {
-            return execute((ReadyCommand)cmd);
-        } else if (clazz == GetHostStatsCommand.class) {
-            return execute((GetHostStatsCommand)cmd);
-        } else if (clazz == GetVmStatsCommand.class) {
-            return execute((GetVmStatsCommand)cmd);
-        } else if (clazz == GetVmDiskStatsCommand.class) {
-            return execute((GetVmDiskStatsCommand)cmd);
-        } else if (clazz == CheckHealthCommand.class) {
-            return execute((CheckHealthCommand)cmd);
-        } else if (clazz == StopCommand.class) {
-            return execute((StopCommand)cmd);
-        } else if (clazz == RebootRouterCommand.class) {
-            return execute((RebootRouterCommand)cmd);
-        } else if (clazz == RebootCommand.class) {
-            return execute((RebootCommand)cmd);
-        } else if (clazz == CheckVirtualMachineCommand.class) {
-            return execute((CheckVirtualMachineCommand)cmd);
-        } else if (clazz == PrepareForMigrationCommand.class) {
-            return execute((PrepareForMigrationCommand)cmd);
-        } else if (clazz == MigrateCommand.class) {
-            return execute((MigrateCommand)cmd);
-        } else if (clazz == DestroyCommand.class) {
-            return execute((DestroyCommand)cmd);
-        } else if (clazz == CreateStoragePoolCommand.class) {
-            return execute((CreateStoragePoolCommand)cmd);
-        } else if (clazz == ModifyStoragePoolCommand.class) {
-            return execute((ModifyStoragePoolCommand)cmd);
-        } else if (clazz == DeleteStoragePoolCommand.class) {
-            return execute((DeleteStoragePoolCommand) cmd);
-        }else if (clazz == ResizeVolumeCommand.class) {
-            return execute((ResizeVolumeCommand) cmd);
-        } else if (clazz == AttachVolumeCommand.class) {
-            return execute((AttachVolumeCommand)cmd);
-        } else if (clazz == AttachIsoCommand.class) {
-            return execute((AttachIsoCommand) cmd);
-        } else if (clazz == UpgradeSnapshotCommand.class) {
-            return execute((UpgradeSnapshotCommand)cmd);
-        } else if (clazz == GetStorageStatsCommand.class) {
-            return execute((GetStorageStatsCommand)cmd);
-        } else if (clazz == PrimaryStorageDownloadCommand.class) {
-            return execute((PrimaryStorageDownloadCommand)cmd);
-        } else if (clazz == GetVncPortCommand.class) {
-            return execute((GetVncPortCommand)cmd);
-        } else if (clazz == SetupCommand.class) {
-            return execute((SetupCommand)cmd);
-        } else if (clazz == MaintainCommand.class) {
-            return execute((MaintainCommand)cmd);
-        } else if (clazz == PingTestCommand.class) {
-            return execute((PingTestCommand)cmd);
-        } else if (clazz == CheckOnHostCommand.class) {
-            return execute((CheckOnHostCommand)cmd);
-        } else if (clazz == ModifySshKeysCommand.class) {
-            return execute((ModifySshKeysCommand)cmd);
-        } else if (clazz == StartCommand.class) {
-            return execute((StartCommand)cmd);
-        } else if (clazz == CheckSshCommand.class) {
-            return execute((CheckSshCommand)cmd);
-        } else if (clazz == SecurityGroupRulesCmd.class) {
-            return execute((SecurityGroupRulesCmd)cmd);
-        } else if (clazz == OvsFetchInterfaceCommand.class) {
-            return execute((OvsFetchInterfaceCommand)cmd);
-        } else if (clazz == OvsCreateGreTunnelCommand.class) {
-            return execute((OvsCreateGreTunnelCommand)cmd);
-        } else if (clazz == OvsSetTagAndFlowCommand.class) {
-            return execute((OvsSetTagAndFlowCommand)cmd);
-        } else if (clazz == OvsDeleteFlowCommand.class) {
-            return execute((OvsDeleteFlowCommand)cmd);
-        } else if (clazz == OvsVpcPhysicalTopologyConfigCommand.class) {
-            return execute((OvsVpcPhysicalTopologyConfigCommand) cmd);
-        } else if (clazz == OvsVpcRoutingPolicyConfigCommand.class) {
-            return execute((OvsVpcRoutingPolicyConfigCommand) cmd);
-        } else if (clazz == CleanupNetworkRulesCmd.class) {
-            return execute((CleanupNetworkRulesCmd)cmd);
-        } else if (clazz == NetworkRulesSystemVmCommand.class) {
-            return execute((NetworkRulesSystemVmCommand)cmd);
-        } else if (clazz == OvsCreateTunnelCommand.class) {
-            return execute((OvsCreateTunnelCommand)cmd);
-        } else if (clazz == OvsSetupBridgeCommand.class) {
-            return execute((OvsSetupBridgeCommand)cmd);
-        } else if (clazz == OvsDestroyBridgeCommand.class) {
-            return execute((OvsDestroyBridgeCommand)cmd);
-        } else if (clazz == OvsDestroyTunnelCommand.class) {
-            return execute((OvsDestroyTunnelCommand)cmd);
-        } else if (clazz == UpdateHostPasswordCommand.class) {
-            return execute((UpdateHostPasswordCommand)cmd);
-        } else if (cmd instanceof ClusterSyncCommand) {
-            return execute((ClusterSyncCommand)cmd);
-        } else if (cmd instanceof ClusterVMMetaDataSyncCommand) {
-            return execute((ClusterVMMetaDataSyncCommand)cmd);
-        } else if (clazz == CheckNetworkCommand.class) {
-            return execute((CheckNetworkCommand)cmd);
-        } else if (clazz == PlugNicCommand.class) {
-            return execute((PlugNicCommand)cmd);
-        } else if (clazz == UnPlugNicCommand.class) {
-            return execute((UnPlugNicCommand) cmd);
-        } else if (cmd instanceof StorageSubSystemCommand) {
-            return storageHandler.handleStorageCommands((StorageSubSystemCommand) cmd);
-        } else if (clazz == CreateVMSnapshotCommand.class) {
-            return execute((CreateVMSnapshotCommand) cmd);
-        } else if (clazz == DeleteVMSnapshotCommand.class) {
-            return execute((DeleteVMSnapshotCommand) cmd);
-        } else if (clazz == RevertToVMSnapshotCommand.class) {
-            return execute((RevertToVMSnapshotCommand) cmd);
-        } else if (clazz == NetworkRulesVmSecondaryIpCommand.class) {
-            return execute((NetworkRulesVmSecondaryIpCommand) cmd);
-        } else if (clazz == ScaleVmCommand.class) {
-            return execute((ScaleVmCommand)cmd);
-        } else if (clazz == PvlanSetupCommand.class) {
-            return execute((PvlanSetupCommand)cmd);
-        } else if (clazz == PerformanceMonitorCommand.class) {
-            return execute((PerformanceMonitorCommand)cmd);
-        } else {
-            return Answer.createUnsupportedCommandAnswer(cmd);
-        }
-    }
-
-    @Override
-    public ExecutionResult executeInVR(String routerIP, String script, String args, int timeout) {
-        Pair<Boolean, String> result;
-        try {
-            result = SshHelper.sshExecute(_host.ip, 22, _username, null, _password.peek(), "/opt/cloud/bin/router_proxy.sh " + script + " " + routerIP + " " + args,
-                    60000, 60000, timeout * 1000);
-        } catch (Exception e) {
-            return new ExecutionResult(false, e.getMessage());
-        }
-        return new ExecutionResult(result.first(), result.second());
-    }
-
-    @Override
-    public ExecutionResult executeInVR(String routerIP, String script, String args) {
-        // Timeout is 120 seconds by default
-        return executeInVR(routerIP, script, args, 120);
-    }
-
-    @Override
-    public ExecutionResult createFileInVR(String routerIp, String path, String filename, String content) {
-        Connection conn = getConnection();
-        String rc = callHostPlugin(conn, "vmops", "createFileInDomr", "domrip", routerIp, "filepath", path + filename, "filecontents", content);
-        // Fail case would be start with "fail#"
-        return new ExecutionResult(rc.startsWith("succ#"), rc.substring(5));
-    }
-
-    @Override
-    public ExecutionResult prepareCommand(NetworkElementCommand cmd) {
-        //Update IP used to access router
-        cmd.setRouterAccessIp(cmd.getAccessDetail(NetworkElementCommand.ROUTER_IP));
-        assert cmd.getRouterAccessIp() != null;
-
-        if (cmd instanceof IpAssocVpcCommand) {
-            return prepareNetworkElementCommand((IpAssocVpcCommand)cmd);
-        } else if (cmd instanceof IpAssocCommand) {
-            return prepareNetworkElementCommand((IpAssocCommand)cmd);
-        } else if (cmd instanceof SetupGuestNetworkCommand) {
-            return prepareNetworkElementCommand((SetupGuestNetworkCommand)cmd);
-        } else if (cmd instanceof SetSourceNatCommand) {
-            return prepareNetworkElementCommand((SetSourceNatCommand)cmd);
-        } else if (cmd instanceof SetNetworkACLCommand) {
-            return prepareNetworkElementCommand((SetNetworkACLCommand)cmd);
-        }
-        return new ExecutionResult(true, null);
-    }
-
-    @Override
-    public ExecutionResult cleanupCommand(NetworkElementCommand cmd) {
-        if (cmd instanceof IpAssocCommand && !(cmd instanceof IpAssocVpcCommand)) {
-            return cleanupNetworkElementCommand((IpAssocCommand)cmd);
-        }
-        return new ExecutionResult(true, null);
-    }
-
-    private Answer execute(PerformanceMonitorCommand cmd) {
-        Connection conn = getConnection();
-        String perfMon = getPerfMon(conn, cmd.getParams(), cmd.getWait());
-        if (perfMon == null) {
-            return new PerformanceMonitorAnswer(cmd, false, perfMon);
-        } else
-            return new PerformanceMonitorAnswer(cmd, true, perfMon);
-    }
-
-    private String getPerfMon(Connection conn, Map<String, String> params,
-            int wait) {
-        String result = null;
-        try {
-            result = callHostPluginAsync(conn, "vmopspremium", "asmonitor", 60,
-                    params);
-            if (result != null)
-                return result;
-        } catch (Exception e) {
-            s_logger.error("Can not get performance monitor for AS due to ", e);
-        }
-        return null;
-    }
-
-    protected String callHostPluginAsync(Connection conn, String plugin,
-            String cmd, int wait, Map<String, String> params) {
-        int timeout = wait * 1000;
-        Map<String, String> args = new HashMap<String, String>();
-        Task task = null;
-        try {
-            for (String key : params.keySet()) {
-                args.put(key, params.get(key));
-            }
-            if (s_logger.isTraceEnabled()) {
-                s_logger.trace("callHostPlugin executing for command " + cmd
-                        + " with " + getArgsString(args));
-            }
-            Host host = Host.getByUuid(conn, _host.uuid);
-            task = host.callPluginAsync(conn, plugin, cmd, args);
-            // poll every 1 seconds
-            waitForTask(conn, task, 1000, timeout);
-            checkForSuccess(conn, task);
-            String result = task.getResult(conn);
-            if (s_logger.isTraceEnabled()) {
-                s_logger.trace("callHostPlugin Result: " + result);
-            }
-            return result.replace("<value>", "").replace("</value>", "")
-                    .replace("\n", "");
-        } catch (Types.HandleInvalid e) {
-            s_logger.warn("callHostPlugin failed for cmd: " + cmd
-                    + " with args " + getArgsString(args)
-                    + " due to HandleInvalid clazz:" + e.clazz + ", handle:"
-                    + e.handle);
-        } catch (XenAPIException e) {
-            s_logger.warn(
-                    "callHostPlugin failed for cmd: " + cmd + " with args "
-                            + getArgsString(args) + " due to " + e.toString(),
-                            e);
-        } catch (XmlRpcException e) {
-            s_logger.warn(
-                    "callHostPlugin failed for cmd: " + cmd + " with args "
-                            + getArgsString(args) + " due to " + e.getMessage(),
-                            e);
-        } finally {
-            if (task != null) {
-                try {
-                    task.destroy(conn);
-                } catch (Exception e1) {
-                    s_logger.warn("unable to destroy task(" + task.toString()
-                            + ") on host(" + _host.uuid + ") due to ", e1);
-                }
-            }
-        }
-        return null;
-    }
-
-    protected void scaleVM(Connection conn, VM vm, VirtualMachineTO vmSpec, Host host) throws XenAPIException, XmlRpcException {
-
-        Long staticMemoryMax = vm.getMemoryStaticMax(conn);
-        Long staticMemoryMin = vm.getMemoryStaticMin(conn);
-        Long newDynamicMemoryMin = vmSpec.getMinRam();
-        Long newDynamicMemoryMax = vmSpec.getMaxRam();
-        if (staticMemoryMin > newDynamicMemoryMin || newDynamicMemoryMax > staticMemoryMax) {
-            throw new CloudRuntimeException("Cannot scale up the vm because of memory constraint violation: " + "0 <= memory-static-min(" + staticMemoryMin +
-                    ") <= memory-dynamic-min(" + newDynamicMemoryMin + ") <= memory-dynamic-max(" + newDynamicMemoryMax + ") <= memory-static-max(" + staticMemoryMax + ")");
-        }
-
-        vm.setMemoryDynamicRange(conn, newDynamicMemoryMin, newDynamicMemoryMax);
-        vm.setVCPUsNumberLive(conn, (long)vmSpec.getCpus());
-
-        Integer speed = vmSpec.getMinSpeed();
-        if (speed != null) {
-
-            int cpuWeight = _maxWeight; //cpu_weight
-
-            // weight based allocation
-
-            cpuWeight = (int)((speed * 0.99) / _host.speed * _maxWeight);
-            if (cpuWeight > _maxWeight) {
-                cpuWeight = _maxWeight;
-            }
-
-            if (vmSpec.getLimitCpuUse()) {
-                long utilization = 0; // max CPU cap, default is unlimited
-                utilization = (int)((vmSpec.getMaxSpeed() * 0.99 * vmSpec.getCpus()) / _host.speed * 100);
-                //vm.addToVCPUsParamsLive(conn, "cap", Long.toString(utilization)); currently xenserver doesnot support Xapi to add VCPUs params live.
-                callHostPlugin(conn, "vmops", "add_to_VCPUs_params_live", "key", "cap", "value", Long.toString(utilization), "vmname", vmSpec.getName());
-            }
-            //vm.addToVCPUsParamsLive(conn, "weight", Integer.toString(cpuWeight));
-            callHostPlugin(conn, "vmops", "add_to_VCPUs_params_live", "key", "weight", "value", Integer.toString(cpuWeight), "vmname", vmSpec.getName());
-        }
-    }
-
-    public ScaleVmAnswer execute(ScaleVmCommand cmd) {
-        VirtualMachineTO vmSpec = cmd.getVirtualMachine();
-        String vmName = vmSpec.getName();
-        try {
-            Connection conn = getConnection();
-            Set<VM> vms = VM.getByNameLabel(conn, vmName);
-            Host host = Host.getByUuid(conn, _host.uuid);
-
-            // If DMC is not enable then don't execute this command.
-            if (!isDmcEnabled(conn, host)) {
-                throw new CloudRuntimeException("Unable to scale the vm: " + vmName + " as DMC - Dynamic memory control is not enabled for the XenServer:" + _host.uuid +
-                        " ,check your license and hypervisor version.");
-            }
-
-            // stop vm which is running on this host or is in halted state
-            Iterator<VM> iter = vms.iterator();
-            while (iter.hasNext()) {
-                VM vm = iter.next();
-                VM.Record vmr = vm.getRecord(conn);
-
-                if ((vmr.powerState == VmPowerState.HALTED) ||
-                        (vmr.powerState == VmPowerState.RUNNING && !isRefNull(vmr.residentOn) && !vmr.residentOn.getUuid(conn).equals(_host.uuid))) {
-                    iter.remove();
-                }
-            }
-
-            if (vms.size() == 0) {
-                s_logger.info("No running VM " + vmName + " exists on XenServer" + _host.uuid);
-                return new ScaleVmAnswer(cmd, false, "VM does not exist");
-            }
-
-            for (VM vm : vms) {
-                vm.getRecord(conn);
-                try {
-                    scaleVM(conn, vm, vmSpec, host);
-                } catch (Exception e) {
-                    String msg = "Catch exception " + e.getClass().getName() + " when scaling VM:" + vmName + " due to " + e.toString();
-                    s_logger.debug(msg);
-                    return new ScaleVmAnswer(cmd, false, msg);
-                }
-
-            }
-            String msg = "scaling VM " + vmName + " is successful on host " + host;
-            s_logger.debug(msg);
-            return new ScaleVmAnswer(cmd, true, msg);
-
-        } catch (XenAPIException e) {
-            String msg = "Upgrade Vm " + vmName + " fail due to " + e.toString();
-            s_logger.warn(msg, e);
-            return new ScaleVmAnswer(cmd, false, msg);
-        } catch (XmlRpcException e) {
-            String msg = "Upgrade Vm " + vmName + " fail due to " + e.getMessage();
-            s_logger.warn(msg, e);
-            return new ScaleVmAnswer(cmd, false, msg);
-        } catch (Exception e) {
-            String msg = "Unable to upgrade " + vmName + " due to " + e.getMessage();
-            s_logger.warn(msg, e);
-            return new ScaleVmAnswer(cmd, false, msg);
-        }
-    }
-
-    private Answer execute(RevertToVMSnapshotCommand cmd) {
-        String vmName = cmd.getVmName();
-        List<VolumeObjectTO> listVolumeTo = cmd.getVolumeTOs();
-        VMSnapshot.Type vmSnapshotType = cmd.getTarget().getType();
-        Boolean snapshotMemory = vmSnapshotType == VMSnapshot.Type.DiskAndMemory;
-        Connection conn = getConnection();
-        VirtualMachine.State vmState = null;
-        VM vm = null;
-        try {
-
-            // remove vm from s_vms, for delta sync
-            s_vms.remove(_cluster, _name, vmName);
-
-            Set<VM> vmSnapshots = VM.getByNameLabel(conn, cmd.getTarget().getSnapshotName());
-            if (vmSnapshots.size() == 0)
-                return new RevertToVMSnapshotAnswer(cmd, false, "Cannot find vmSnapshot with name: " + cmd.getTarget().getSnapshotName());
-
-            VM vmSnapshot = vmSnapshots.iterator().next();
-
-            // find target VM or creating a work VM
-            try {
-                vm = getVM(conn, vmName);
-            } catch (Exception e) {
-                vm = createWorkingVM(conn, vmName, cmd.getGuestOSType(), listVolumeTo);
-            }
-
-            if (vm == null) {
-                return new RevertToVMSnapshotAnswer(cmd, false, "Revert to VM Snapshot Failed due to can not find vm: " + vmName);
-            }
-
-            // call plugin to execute revert
-            revertToSnapshot(conn, vmSnapshot, vmName, vm.getUuid(conn), snapshotMemory, _host.uuid);
-            vm = getVM(conn, vmName);
-            Set<VBD> vbds = vm.getVBDs(conn);
-            Map<String, VDI> vdiMap = new HashMap<String, VDI>();
-            // get vdi:vbdr to a map
-            for (VBD vbd : vbds) {
-                VBD.Record vbdr = vbd.getRecord(conn);
-                if (vbdr.type == Types.VbdType.DISK) {
-                    VDI vdi = vbdr.VDI;
-                    vdiMap.put(vbdr.userdevice, vdi);
-                }
-            }
-
-            if (!snapshotMemory) {
-                vm.destroy(conn);
-                vmState = VirtualMachine.State.Stopped;
-            } else {
-                s_vms.put(_cluster, _name, vmName, State.Running);
-                vmState = VirtualMachine.State.Running;
-            }
-
-            // after revert, VM's volumes path have been changed, need to report to manager
-            for (VolumeObjectTO volumeTo : listVolumeTo) {
-                Long deviceId = volumeTo.getDeviceId();
-                VDI vdi = vdiMap.get(deviceId.toString());
-                volumeTo.setPath(vdi.getUuid(conn));
-            }
-
-            return new RevertToVMSnapshotAnswer(cmd, listVolumeTo, vmState);
-        } catch (Exception e) {
-            s_logger.error("revert vm " + vmName + " to snapshot " + cmd.getTarget().getSnapshotName() + " failed due to " + e.getMessage());
-            return new RevertToVMSnapshotAnswer(cmd, false, e.getMessage());
-        }
-    }
-
-    protected String revertToSnapshot(Connection conn, VM vmSnapshot, String vmName, String oldVmUuid, Boolean snapshotMemory, String hostUUID) throws XenAPIException,
-    XmlRpcException {
-
-        String results =
-                callHostPluginAsync(conn, "vmopsSnapshot", "revert_memory_snapshot", 10 * 60 * 1000, "snapshotUUID", vmSnapshot.getUuid(conn), "vmName", vmName, "oldVmUuid",
-                        oldVmUuid, "snapshotMemory", snapshotMemory.toString(), "hostUUID", hostUUID);
-        String errMsg = null;
-        if (results == null || results.isEmpty()) {
-            errMsg = "revert_memory_snapshot return null";
-        } else {
-            if (results.equals("0")) {
-                return results;
-            } else {
-                errMsg = "revert_memory_snapshot exception";
-            }
-        }
-        s_logger.warn(errMsg);
-        throw new CloudRuntimeException(errMsg);
-    }
-
-    protected XsLocalNetwork getNativeNetworkForTraffic(Connection conn, TrafficType type, String name) throws XenAPIException, XmlRpcException {
-        if (name != null) {
-            if (s_logger.isDebugEnabled()) {
-                s_logger.debug("Looking for network named " + name);
-            }
-            return getNetworkByName(conn, name);
-        }
-
-        if (type == TrafficType.Guest) {
-            return new XsLocalNetwork(Network.getByUuid(conn, _host.guestNetwork), null, PIF.getByUuid(conn, _host.guestPif), null);
-        } else if (type == TrafficType.Control) {
-            setupLinkLocalNetwork(conn);
-            return new XsLocalNetwork(Network.getByUuid(conn, _host.linkLocalNetwork));
-        } else if (type == TrafficType.Management) {
-            return new XsLocalNetwork(Network.getByUuid(conn, _host.privateNetwork), null, PIF.getByUuid(conn, _host.privatePif), null);
-        } else if (type == TrafficType.Public) {
-            return new XsLocalNetwork(Network.getByUuid(conn, _host.publicNetwork), null, PIF.getByUuid(conn, _host.publicPif), null);
-        } else if (type == TrafficType.Storage) {
-            /*   TrafficType.Storage is for secondary storage, while storageNetwork1 is for primary storage, we need better name here */
-            return new XsLocalNetwork(Network.getByUuid(conn, _host.storageNetwork1), null, PIF.getByUuid(conn, _host.storagePif1), null);
-        }
-
-        throw new CloudRuntimeException("Unsupported network type: " + type);
-    }
-
-    /**
-     * This is a tricky to create network in xenserver.
-     * if you create a network then create bridge by brctl or openvswitch yourself,
-     * then you will get an expection that is "REQUIRED_NETWROK" when you start a
-     * vm with this network. The soultion is, create a vif of dom0 and plug it in
-     * network, xenserver will create the bridge on behalf of you
-     * @throws XmlRpcException
-     * @throws XenAPIException
-     */
-    private void enableXenServerNetwork(Connection conn, Network nw, String vifNameLabel, String networkDesc) throws XenAPIException, XmlRpcException {
-        /* Make sure there is a physical bridge on this network */
-        VIF dom0vif = null;
-        Pair<VM, VM.Record> vm = getControlDomain(conn);
-        VM dom0 = vm.first();
-        // Create a VIF unless there's not already another VIF
-        Set<VIF> dom0Vifs = dom0.getVIFs(conn);
-        for (VIF vif : dom0Vifs) {
-            vif.getRecord(conn);
-            if (vif.getNetwork(conn).getUuid(conn).equals(nw.getUuid(conn))) {
-                dom0vif = vif;
-                s_logger.debug("A VIF for dom0 has already been found - No need to create one");
-            }
-        }
-
-        if (dom0vif == null) {
-            s_logger.debug("Create a vif on dom0 for " + networkDesc);
-            VIF.Record vifr = new VIF.Record();
-            vifr.VM = dom0;
-            vifr.device = getLowestAvailableVIFDeviceNum(conn, dom0);
-            if (vifr.device == null) {
-                s_logger.debug("Failed to create " + networkDesc + ", no vif available");
-                return;
-            }
-            Map<String, String> config = new HashMap<String, String>();
-            config.put("nameLabel", vifNameLabel);
-            vifr.otherConfig = config;
-            vifr.MAC = "FE:FF:FF:FF:FF:FF";
-            vifr.network = nw;
-
-            vifr.lockingMode = Types.VifLockingMode.NETWORK_DEFAULT;
-            dom0vif = VIF.create(conn, vifr);
-            synchronized (_tmpDom0Vif) {
-                _tmpDom0Vif.add(dom0vif);
-            }
-        }
-        // At this stage we surely have a VIF
-        try {
-            dom0vif.plug(conn);
-        } catch (Exception e) {
-            // though an exception is thrown here, VIF actually gets plugged-in to dom0, so just ignore the exception
-        }
-        dom0vif.unplug(conn);
-    }
-
-    private synchronized Network setupvSwitchNetwork(Connection conn) {
-        try {
-            if (_host.vswitchNetwork == null) {
-                Network vswitchNw = null;
-                Network.Record rec = new Network.Record();
-                String nwName = Networks.BroadcastScheme.VSwitch.toString();
-                Set<Network> networks = Network.getByNameLabel(conn, nwName);
-
-                if (networks.size() == 0) {
-                    rec.nameDescription = "vswitch network for " + nwName;
-                    rec.nameLabel = nwName;
-                    vswitchNw = Network.create(conn, rec);
-                } else {
-                    vswitchNw = networks.iterator().next();
-                }
-                if (!is_xcp())
-                    enableXenServerNetwork(conn, vswitchNw, "vswitch", "vswitch network");
-                _host.vswitchNetwork = vswitchNw;
-            }
-            return _host.vswitchNetwork;
-        } catch (BadServerResponse e) {
-            s_logger.error("Failed to setup vswitch network", e);
-        } catch (XenAPIException e) {
-            s_logger.error("Failed to setup vswitch network", e);
-        } catch (XmlRpcException e) {
-            s_logger.error("Failed to setup vswitch network", e);
-        }
-
-        return null;
-    }
-
-    /**
-     * This method just creates a XenServer network following the tunnel network naming convention
-     */
-    private synchronized Network findOrCreateTunnelNetwork(Connection conn, String nwName) {
-        try {
-            Network nw = null;
-            Network.Record rec = new Network.Record();
-            Set<Network> networks = Network.getByNameLabel(conn, nwName);
-
-            if (networks.size() == 0) {
-                rec.nameDescription = "tunnel network id# " + nwName;
-                rec.nameLabel = nwName;
-                //Initialize the ovs-host-setup to avoid error when doing get-param in plugin
-                Map<String, String> otherConfig = new HashMap<String, String>();
-                otherConfig.put("ovs-host-setup", "");
-                rec.otherConfig = otherConfig;
-                nw = Network.create(conn, rec);
-                // Plug dom0 vif only when creating network
-                enableXenServerNetwork(conn, nw, nwName, "tunnel network for account " + nwName);
-                s_logger.debug("### Xen Server network for tunnels created:" + nwName);
-            } else {
-                nw = networks.iterator().next();
-                enableXenServerNetwork(conn, nw, nwName, "tunnel network for account " + nwName);
-                s_logger.debug("Xen Server network for tunnels found:" + nwName);
-            }
-            return nw;
-        } catch (Exception e) {
-            s_logger.warn("createTunnelNetwork failed", e);
-            return null;
-        }
-    }
-
-    /**
-     * This method creates a XenServer network and configures it for being used as a L2-in-L3 tunneled network
-     */
-    private synchronized Network configureTunnelNetwork(Connection conn, Long networkId, long hostId, String bridgeName) {
-        try {
-            Network nw = findOrCreateTunnelNetwork(conn, bridgeName);
-            String nwName = bridgeName;
-            //Invoke plugin to setup the bridge which will be used by this network
-            String bridge = nw.getBridge(conn);
-            Map<String, String> nwOtherConfig = nw.getOtherConfig(conn);
-            String configuredHosts = nwOtherConfig.get("ovs-host-setup");
-            boolean configured = false;
-            if (configuredHosts != null) {
-                String hostIdsStr[] = configuredHosts.split(",");
-                for (String hostIdStr : hostIdsStr) {
-                    if (hostIdStr.equals(((Long)hostId).toString())) {
-                        configured = true;
-                        break;
-                    }
-                }
-            }
-            if (!configured) {
-                // Plug dom0 vif only if not done before for network and host
-                enableXenServerNetwork(conn, nw, nwName, "tunnel network for account " + bridgeName);
-                String result;
-                if (bridgeName.startsWith("OVS-DR-VPC-Bridge")) {
-                    result = callHostPlugin(conn, "ovstunnel", "setup_ovs_bridge_for_distributed_routing", "bridge", bridge,
-                            "key", bridgeName,
-                            "xs_nw_uuid", nw.getUuid(conn),
-                            "cs_host_id", ((Long)hostId).toString());
-                } else {
-                    result = callHostPlugin(conn, "ovstunnel", "setup_ovs_bridge", "bridge", bridge,
-                            "key", bridgeName,
-                            "xs_nw_uuid", nw.getUuid(conn),
-                            "cs_host_id", ((Long)hostId).toString());
-                }
-
-                //Note down the fact that the ovs bridge has been setup
-                String[] res = result.split(":");
-                if (res.length != 2 || !res[0].equalsIgnoreCase("SUCCESS")) {
-                    //TODO: Should make this error not fatal?
-                    throw new CloudRuntimeException("Unable to pre-configure OVS bridge " + bridge );
-                }
-            }
-            return nw;
-        } catch (Exception e) {
-            s_logger.warn("createandConfigureTunnelNetwork failed", e);
-            return null;
-        }
-    }
-
-    private synchronized void destroyTunnelNetwork(Connection conn, String bridgeName) {
-        try {
-            Network nw = findOrCreateTunnelNetwork(conn, bridgeName);
-            String bridge = nw.getBridge(conn);
-            String result = callHostPlugin(conn, "ovstunnel", "destroy_ovs_bridge", "bridge", bridge);
-            String[] res = result.split(":");
-            if (res.length != 2 || !res[0].equalsIgnoreCase("SUCCESS")) {
-                //TODO: Should make this error not fatal?
-                //Can Concurrent VM shutdown/migration/reboot events can cause this method
-                //to be executed on a bridge which has already been removed?
-                throw new CloudRuntimeException("Unable to remove OVS bridge " + bridge + ":" + res);
-            }
-            return;
-        } catch (Exception e) {
-            s_logger.warn("destroyTunnelNetwork failed:", e);
-            return;
-        }
-    }
-
-    protected Network getNetwork(Connection conn, NicTO nic) throws XenAPIException, XmlRpcException {
-        String name = nic.getName();
-        XsLocalNetwork network = getNativeNetworkForTraffic(conn, nic.getType(), name);
-        if (network == null) {
-            s_logger.error("Network is not configured on the backend for nic " + nic.toString());
-            throw new CloudRuntimeException("Network for the backend is not configured correctly for network broadcast domain: " + nic.getBroadcastUri());
-        }
-        URI uri = nic.getBroadcastUri();
-        BroadcastDomainType type = nic.getBroadcastType();
-        if (uri != null && uri.toString().contains("untagged")) {
-            return network.getNetwork();
-        } else if (type == BroadcastDomainType.Vlan) {
-            assert (BroadcastDomainType.getSchemeValue(uri) == BroadcastDomainType.Vlan);
-            long vlan = Long.parseLong(BroadcastDomainType.getValue(uri));
-            return enableVlanNetwork(conn, vlan, network);
-        } else if (type == BroadcastDomainType.Native || type == BroadcastDomainType.LinkLocal) {
-            return network.getNetwork();
-        } else if (type == BroadcastDomainType.Vswitch) {
-            String header = uri.toString().substring(Networks.BroadcastDomainType.Vswitch.scheme().length() + "://".length());
-            if (header.startsWith("vlan")) {
-                _isOvs = true;
-                return setupvSwitchNetwork(conn);
-            } else {
-                return findOrCreateTunnelNetwork(conn, getOvsTunnelNetworkName(uri.getAuthority()));
-            }
-        } else if (type == BroadcastDomainType.Storage) {
-            if (uri == null) {
-                return network.getNetwork();
-            } else {
-                long vlan = Long.parseLong(BroadcastDomainType.getValue(uri));
-                return enableVlanNetwork(conn, vlan, network);
-            }
-        } else if (type == BroadcastDomainType.Lswitch) {
-            // Nicira Logical Switch
-            return network.getNetwork();
-        } else if (type == BroadcastDomainType.Pvlan) {
-            assert BroadcastDomainType.getSchemeValue(uri) == BroadcastDomainType.Pvlan;
-            // should we consider moving this NetUtils method to BroadcastDomainType?
-            long vlan = Long.parseLong(NetUtils.getPrimaryPvlanFromUri(uri));
-            return enableVlanNetwork(conn, vlan, network);
-        }
-
-        throw new CloudRuntimeException("Unable to support this type of network broadcast domain: " + nic.getBroadcastUri());
-    }
-
-    private String getOvsTunnelNetworkName(String broadcastUri) {
-        if (broadcastUri.contains(".")) {
-            String[] parts = broadcastUri.split("\\.");
-            return "OVS-DR-VPC-Bridge"+parts[0];
-         } else {
-            try {
-                return "OVSTunnel" + broadcastUri;
-            } catch (Exception e) {
-                return null;
-            }
-         }
-    }
-
-    protected VIF createVif(Connection conn, String vmName, VM vm, VirtualMachineTO vmSpec, NicTO nic) throws XmlRpcException, XenAPIException {
-        assert (nic.getUuid() != null) : "Nic should have a uuid value";
-
-        if (s_logger.isDebugEnabled()) {
-            s_logger.debug("Creating VIF for " + vmName + " on nic " + nic);
-        }
-        VIF.Record vifr = new VIF.Record();
-        vifr.VM = vm;
-        vifr.device = Integer.toString(nic.getDeviceId());
-        vifr.MAC = nic.getMac();
-
-        // Nicira needs these IDs to find the NIC
-        vifr.otherConfig = new HashMap<String, String>();
-        vifr.otherConfig.put("nicira-iface-id", nic.getUuid());
-        vifr.otherConfig.put("nicira-vm-id", vm.getUuid(conn));
-        // Provide XAPI with the cloudstack vm and nic uids.
-        vifr.otherConfig.put("cloudstack-nic-id", nic.getUuid());
-        if (vmSpec != null) {
-            vifr.otherConfig.put("cloudstack-vm-id", vmSpec.getUuid());
-        }
-
-        // OVS plugin looks at network UUID in the vif 'otherconfig' details to group VIF's & tunnel ports as part of tier
-        // when bridge is setup for distributed routing
-        vifr.otherConfig.put("cloudstack-network-id", nic.getNetworkUuid());
-
-        vifr.network = getNetwork(conn, nic);
-
-        if (nic.getNetworkRateMbps() != null && nic.getNetworkRateMbps().intValue() != -1) {
-            vifr.qosAlgorithmType = "ratelimit";
-            vifr.qosAlgorithmParams = new HashMap<String, String>();
-            // convert mbs to kilobyte per second
-            vifr.qosAlgorithmParams.put("kbps", Integer.toString(nic.getNetworkRateMbps() * 128));
-        }
-
-        vifr.lockingMode = Types.VifLockingMode.NETWORK_DEFAULT;
-        VIF vif = VIF.create(conn, vifr);
-        if (s_logger.isDebugEnabled()) {
-            vifr = vif.getRecord(conn);
-            s_logger.debug("Created a vif " + vifr.uuid + " on " + nic.getDeviceId());
-        }
-
-        return vif;
-    }
-
-    protected void prepareISO(Connection conn, String vmName) throws XmlRpcException, XenAPIException {
-
-        Set<VM> vms = VM.getByNameLabel(conn, vmName);
-        if (vms == null || vms.size() != 1) {
-            throw new CloudRuntimeException("There are " + ((vms == null) ? "0" : vms.size()) + " VMs named " + vmName);
-        }
-        VM vm = vms.iterator().next();
-        Set<VBD> vbds = vm.getVBDs(conn);
-        for (VBD vbd : vbds) {
-            VBD.Record vbdr = vbd.getRecord(conn);
-            if (vbdr.type == Types.VbdType.CD && vbdr.empty == false) {
-                VDI vdi = vbdr.VDI;
-                SR sr = vdi.getSR(conn);
-                Set<PBD> pbds = sr.getPBDs(conn);
-                if (pbds == null) {
-                    throw new CloudRuntimeException("There is no pbd for sr " + sr);
-                }
-                for (PBD pbd : pbds) {
-                    PBD.Record pbdr = pbd.getRecord(conn);
-                    if (pbdr.host.getUuid(conn).equals(_host.uuid)) {
-                        return;
-                    }
-                }
-                sr.setShared(conn, true);
-                Host host = Host.getByUuid(conn, _host.uuid);
-                PBD.Record pbdr = pbds.iterator().next().getRecord(conn);
-                pbdr.host = host;
-                pbdr.uuid = "";
-                PBD pbd = PBD.create(conn, pbdr);
-                pbdPlug(conn, pbd, pbd.getUuid(conn));
-                break;
-            }
-        }
-    }
-
-    protected VDI mount(Connection conn, String vmName, DiskTO volume) throws XmlRpcException, XenAPIException {
-        DataTO data = volume.getData();
-        Volume.Type type = volume.getType();
-        if (type == Volume.Type.ISO) {
-            TemplateObjectTO iso = (TemplateObjectTO)data;
-            DataStoreTO store = iso.getDataStore();
-
-            if (store == null) {
-                //It's a fake iso
-                return null;
-            }
-
-            //corer case, xenserver pv driver iso
-            String templateName = iso.getName();
-            if (templateName.startsWith("xs-tools")) {
-                try {
-                    Set<VDI> vdis = VDI.getByNameLabel(conn, templateName);
-                    if (vdis.isEmpty()) {
-                        throw new CloudRuntimeException("Could not find ISO with URL: " + templateName);
-                    }
-                    return vdis.iterator().next();
-                } catch (XenAPIException e) {
-                    throw new CloudRuntimeException("Unable to get pv iso: " + templateName + " due to " + e.toString());
-                } catch (Exception e) {
-                    throw new CloudRuntimeException("Unable to get pv iso: " + templateName + " due to " + e.toString());
-                }
-            }
-
-            if (!(store instanceof NfsTO)) {
-                throw new CloudRuntimeException("only support mount iso on nfs");
-            }
-            NfsTO nfsStore = (NfsTO)store;
-            String isoPath = nfsStore.getUrl() + File.separator + iso.getPath();
-            int index = isoPath.lastIndexOf("/");
-
-            String mountpoint = isoPath.substring(0, index);
-            URI uri;
-            try {
-                uri = new URI(mountpoint);
-            } catch (URISyntaxException e) {
-                throw new CloudRuntimeException("Incorrect uri " + mountpoint, e);
-            }
-            SR isoSr = createIsoSRbyURI(conn, uri, vmName, false);
-
-            String isoname = isoPath.substring(index + 1);
-
-            VDI isoVdi = getVDIbyLocationandSR(conn, isoname, isoSr);
-
-            if (isoVdi == null) {
-                throw new CloudRuntimeException("Unable to find ISO " + isoPath);
-            }
-            return isoVdi;
-        } else {
-            VolumeObjectTO vol = (VolumeObjectTO)data;
-            return VDI.getByUuid(conn, vol.getPath());
-        }
-    }
-
-    protected VBD createVbd(Connection conn, DiskTO volume, String vmName, VM vm, BootloaderType bootLoaderType, VDI vdi) throws XmlRpcException, XenAPIException {
-        Volume.Type type = volume.getType();
-
-        if (vdi == null) {
-            vdi = mount(conn, vmName, volume);
-        }
-
-        if (vdi != null) {
-            if ("detached".equals(vdi.getNameLabel(conn))) {
-                vdi.setNameLabel(conn, vmName + "-DATA");
-            }
-
-            Map<String, String> smConfig = vdi.getSmConfig(conn);
-            for (String key : smConfig.keySet()) {
-                if (key.startsWith("host_")) {
-                    vdi.removeFromSmConfig(conn, key);
-                    break;
-                }
-            }
-        }
-        VBD.Record vbdr = new VBD.Record();
-        vbdr.VM = vm;
-        if (vdi != null) {
-            vbdr.VDI = vdi;
-        } else {
-            vbdr.empty = true;
-        }
-        if (type == Volume.Type.ROOT && bootLoaderType == BootloaderType.PyGrub) {
-            vbdr.bootable = true;
-        } else if (type == Volume.Type.ISO && bootLoaderType == BootloaderType.CD) {
-            vbdr.bootable = true;
-        }
-
-        vbdr.userdevice = Long.toString(volume.getDiskSeq());
-        if (volume.getType() == Volume.Type.ISO) {
-            vbdr.mode = Types.VbdMode.RO;
-            vbdr.type = Types.VbdType.CD;
-        } else if (volume.getType() == Volume.Type.ROOT) {
-            vbdr.mode = Types.VbdMode.RW;
-            vbdr.type = Types.VbdType.DISK;
-            vbdr.unpluggable = false;
-        } else {
-            vbdr.mode = Types.VbdMode.RW;
-            vbdr.type = Types.VbdType.DISK;
-            vbdr.unpluggable = true;
-        }
-        VBD vbd = VBD.create(conn, vbdr);
-
-        if (s_logger.isDebugEnabled()) {
-            s_logger.debug("VBD " + vbd.getUuid(conn) + " created for " + volume);
-        }
-
-        return vbd;
-    }
-
-    public long getStaticMax(String os, boolean b, long dynamicMinRam, long dynamicMaxRam) {
-        return dynamicMaxRam;
-    }
-
-    public long getStaticMin(String os, boolean b, long dynamicMinRam, long dynamicMaxRam) {
-        return dynamicMinRam;
-    }
-
-    protected HashMap<String, HashMap<String, VgpuTypesInfo>> getGPUGroupDetails(Connection conn) throws XenAPIException, XmlRpcException {
-        return null;
-    }
-
-    protected void createVGPU(Connection conn, StartCommand cmd, VM vm, GPUDeviceTO gpuDevice) throws XenAPIException, XmlRpcException {
-    }
-
-    protected VM createVmFromTemplate(Connection conn, VirtualMachineTO vmSpec, Host host) throws XenAPIException, XmlRpcException {
-        String guestOsTypeName = getGuestOsType(vmSpec.getOs(), vmSpec.getBootloader() == BootloaderType.CD);
-        Set<VM> templates = VM.getByNameLabel(conn, guestOsTypeName);
-        assert templates.size() == 1 : "Should only have 1 template but found " + templates.size();
-        VM template = templates.iterator().next();
-
-        VM.Record vmr = template.getRecord(conn);
-        vmr.affinity = host;
-        vmr.otherConfig.remove("disks");
-        vmr.otherConfig.remove("default_template");
-        vmr.otherConfig.remove("mac_seed");
-        vmr.isATemplate = false;
-        vmr.nameLabel = vmSpec.getName();
-        vmr.actionsAfterCrash = Types.OnCrashBehaviour.DESTROY;
-        vmr.actionsAfterShutdown = Types.OnNormalExit.DESTROY;
-
-        if (isDmcEnabled(conn, host) && vmSpec.isEnableDynamicallyScaleVm()) {
-            //scaling is allowed
-            vmr.memoryStaticMin = getStaticMin(vmSpec.getOs(), vmSpec.getBootloader() == BootloaderType.CD, vmSpec.getMinRam(), vmSpec.getMaxRam());
-            vmr.memoryStaticMax = getStaticMax(vmSpec.getOs(), vmSpec.getBootloader() == BootloaderType.CD, vmSpec.getMinRam(), vmSpec.getMaxRam());
-            vmr.memoryDynamicMin = vmSpec.getMinRam();
-            vmr.memoryDynamicMax = vmSpec.getMaxRam();
-        } else {
-            //scaling disallowed, set static memory target
-            if (vmSpec.isEnableDynamicallyScaleVm() && !isDmcEnabled(conn, host)) {
-                s_logger.warn("Host " + host.getHostname(conn) + " does not support dynamic scaling, so the vm " + vmSpec.getName() + " is not dynamically scalable");
-            }
-            vmr.memoryStaticMin = vmSpec.getMinRam();
-            vmr.memoryStaticMax = vmSpec.getMaxRam();
-            vmr.memoryDynamicMin = vmSpec.getMinRam();
-            vmr.memoryDynamicMax = vmSpec.getMaxRam();
-        }
-
-        if (guestOsTypeName.toLowerCase().contains("windows")) {
-            vmr.VCPUsMax = (long)vmSpec.getCpus();
-        } else {
-            // XenServer has a documented limit of 16 vcpus per vm
-            vmr.VCPUsMax = 2L * vmSpec.getCpus();
-            if (vmr.VCPUsMax > 16)
-            {
-                vmr.VCPUsMax = 16L;
-            }
-        }
-
-        vmr.VCPUsAtStartup = (long)vmSpec.getCpus();
-        vmr.consoles.clear();
-
-        VM vm = VM.create(conn, vmr);
-        if (s_logger.isDebugEnabled()) {
-            s_logger.debug("Created VM " + vm.getUuid(conn) + " for " + vmSpec.getName());
-        }
-
-        Map<String, String> vcpuParams = new HashMap<String, String>();
-
-        Integer speed = vmSpec.getMinSpeed();
-        if (speed != null) {
-
-            int cpuWeight = _maxWeight; // cpu_weight
-            int utilization = 0; // max CPU cap, default is unlimited
-
-            // weight based allocation, CPU weight is calculated per VCPU
-            cpuWeight = (int)((speed * 0.99) / _host.speed * _maxWeight);
-            if (cpuWeight > _maxWeight) {
-                cpuWeight = _maxWeight;
-            }
-
-            if (vmSpec.getLimitCpuUse()) {
-                // CPU cap is per VM, so need to assign cap based on the number of vcpus
-                utilization = (int)((vmSpec.getMaxSpeed() * 0.99 * vmSpec.getCpus()) / _host.speed * 100);
-            }
-
-            vcpuParams.put("weight", Integer.toString(cpuWeight));
-            vcpuParams.put("cap", Integer.toString(utilization));
-
-        }
-
-        if (vcpuParams.size() > 0) {
-            vm.setVCPUsParams(conn, vcpuParams);
-        }
-
-        String bootArgs = vmSpec.getBootArgs();
-        if (bootArgs != null && bootArgs.length() > 0) {
-            String pvargs = vm.getPVArgs(conn);
-            pvargs = pvargs + vmSpec.getBootArgs().replaceAll(" ", "%");
-            if (s_logger.isDebugEnabled()) {
-                s_logger.debug("PV args are " + pvargs);
-            }
-            vm.setPVArgs(conn, pvargs);
-        }
-
-        if (!(guestOsTypeName.startsWith("Windows") || guestOsTypeName.startsWith("Citrix") || guestOsTypeName.startsWith("Other"))) {
-            if (vmSpec.getBootloader() == BootloaderType.CD) {
-                DiskTO[] disks = vmSpec.getDisks();
-                for (DiskTO disk : disks) {
-                    if (disk.getType() == Volume.Type.ISO) {
-                        TemplateObjectTO iso = (TemplateObjectTO)disk.getData();
-                        String osType = iso.getGuestOsType();
-                        if (osType != null) {
-                            String isoGuestOsName = getGuestOsType(osType, vmSpec.getBootloader() == BootloaderType.CD);
-                            if (!isoGuestOsName.equals(guestOsTypeName)) {
-                                vmSpec.setBootloader(BootloaderType.PyGrub);
-                            }
-                        }
-                    }
-                }
-            }
-            if (vmSpec.getBootloader() == BootloaderType.CD) {
-                vm.setPVBootloader(conn, "eliloader");
-                if (!vm.getOtherConfig(conn).containsKey("install-repository")) {
-                    vm.addToOtherConfig(conn, "install-repository", "cdrom");
-                }
-            } else if (vmSpec.getBootloader() == BootloaderType.PyGrub) {
-                vm.setPVBootloader(conn, "pygrub");
-            } else {
-                vm.destroy(conn);
-                throw new CloudRuntimeException("Unable to handle boot loader type: " + vmSpec.getBootloader());
-            }
-        }
-        try {
-            finalizeVmMetaData(vm, conn, vmSpec);
-        } catch (Exception e) {
-            throw new CloudRuntimeException("Unable to finalize VM MetaData: " + vmSpec);
-        }
-        return vm;
-    }
-
-
-    protected void finalizeVmMetaData(VM vm, Connection conn, VirtualMachineTO vmSpec) throws Exception {
-
-        Map<String, String> details = vmSpec.getDetails();
-        if (details != null) {
-            String platformstring = details.get("platform");
-            if (platformstring != null && !platformstring.isEmpty()) {
-                Map<String, String> platform = StringUtils.stringToMap(platformstring);
-                vm.setPlatform(conn, platform);
-            } else {
-                String timeoffset = details.get("timeoffset");
-                if (timeoffset != null) {
-                    Map<String, String> platform = vm.getPlatform(conn);
-                    platform.put("timeoffset", timeoffset);
-                    vm.setPlatform(conn, platform);
-                }
-                String coresPerSocket = details.get("cpu.corespersocket");
-                if (coresPerSocket != null) {
-                    Map<String, String> platform = vm.getPlatform(conn);
-                    platform.put("cores-per-socket", coresPerSocket);
-                    vm.setPlatform(conn, platform);
-                }
-            }
-            String xentoolsversion = details.get("hypervisortoolsversion");
-            if (xentoolsversion == null || !xentoolsversion.equalsIgnoreCase("xenserver61")) {
-                Map<String, String> platform = vm.getPlatform(conn);
-                platform.remove("device_id");
-                vm.setPlatform(conn, platform);
-            }
-        }
-    }
-
-    protected String handleVmStartFailure(Connection conn, String vmName, VM vm, String message, Throwable th) {
-        String msg = "Unable to start " + vmName + " due to " + message;
-        s_logger.warn(msg, th);
-
-        if (vm == null) {
-            return msg;
-        }
-
-        try {
-            VM.Record vmr = vm.getRecord(conn);
-            List<Network> networks = new ArrayList<Network>();
-            for (VIF vif : vmr.VIFs) {
-                try {
-                    VIF.Record rec = vif.getRecord(conn);
-                    networks.add(rec.network);
-                } catch (Exception e) {
-                    s_logger.warn("Unable to cleanup VIF", e);
-                }
-            }
-            if (vmr.powerState == VmPowerState.RUNNING) {
-                try {
-                    vm.hardShutdown(conn);
-                } catch (Exception e) {
-                    s_logger.warn("VM hardshutdown failed due to ", e);
-                }
-            }
-            if (vm.getPowerState(conn) == VmPowerState.HALTED) {
-                try {
-                    vm.destroy(conn);
-                } catch (Exception e) {
-                    s_logger.warn("VM destroy failed due to ", e);
-                }
-            }
-            for (VBD vbd : vmr.VBDs) {
-                try {
-                    vbd.unplug(conn);
-                    vbd.destroy(conn);
-                } catch (Exception e) {
-                    s_logger.warn("Unable to clean up VBD due to ", e);
-                }
-            }
-            for (VIF vif : vmr.VIFs) {
-                try {
-                    vif.unplug(conn);
-                    vif.destroy(conn);
-                } catch (Exception e) {
-                    s_logger.warn("Unable to cleanup VIF", e);
-                }
-            }
-            for (Network network : networks) {
-                if (network.getNameLabel(conn).startsWith("VLAN")) {
-                    disableVlanNetwork(conn, network);
-                }
-            }
-        } catch (Exception e) {
-            s_logger.warn("VM getRecord failed due to ", e);
-        }
-
-        return msg;
-    }
-
-    protected VBD createPatchVbd(Connection conn, String vmName, VM vm) throws XmlRpcException, XenAPIException {
-
-        if (_host.systemvmisouuid == null) {
-            Set<SR> srs = SR.getByNameLabel(conn, "XenServer Tools");
-            if (srs.size() != 1) {
-                throw new CloudRuntimeException("There are " + srs.size() + " SRs with name XenServer Tools");
-            }
-            SR sr = srs.iterator().next();
-            sr.scan(conn);
-
-            SR.Record srr = sr.getRecord(conn);
-
-            if (_host.systemvmisouuid == null) {
-                for (VDI vdi : srr.VDIs) {
-                    VDI.Record vdir = vdi.getRecord(conn);
-                    if (vdir.nameLabel.contains("systemvm.iso")) {
-                        _host.systemvmisouuid = vdir.uuid;
-                        break;
-                    }
-                }
-            }
-            if (_host.systemvmisouuid == null) {
-                throw new CloudRuntimeException("can not find systemvmiso");
-            }
-        }
-
-        VBD.Record cdromVBDR = new VBD.Record();
-        cdromVBDR.VM = vm;
-        cdromVBDR.empty = true;
-        cdromVBDR.bootable = false;
-        cdromVBDR.userdevice = "3";
-        cdromVBDR.mode = Types.VbdMode.RO;
-        cdromVBDR.type = Types.VbdType.CD;
-        VBD cdromVBD = VBD.create(conn, cdromVBDR);
-        cdromVBD.insert(conn, VDI.getByUuid(conn, _host.systemvmisouuid));
-
-        return cdromVBD;
-    }
-
-    protected void destroyPatchVbd(Connection conn, String vmName) throws XmlRpcException, XenAPIException {
-        try {
-            if (!vmName.startsWith("r-") && !vmName.startsWith("s-") && !vmName.startsWith("v-")) {
-                return;
-            }
-            Set<VM> vms = VM.getByNameLabel(conn, vmName);
-            for (VM vm : vms) {
-                Set<VBD> vbds = vm.getVBDs(conn);
-                for (VBD vbd : vbds) {
-                    if (vbd.getType(conn) == Types.VbdType.CD) {
-                        vbd.eject(conn);
-                        vbd.destroy(conn);
-                        break;
-                    }
-                }
-            }
-        } catch (Exception e) {
-            s_logger.debug("Cannot destory CD-ROM device for VM " + vmName + " due to " + e.toString(), e);
-        }
-    }
-
-    protected CheckSshAnswer execute(CheckSshCommand cmd) {
-        Connection conn = getConnection();
-        String vmName = cmd.getName();
-        String privateIp = cmd.getIp();
-        int cmdPort = cmd.getPort();
-
-        if (s_logger.isDebugEnabled()) {
-            s_logger.debug("Ping command port, " + privateIp + ":" + cmdPort);
-        }
-
-        try {
-            String result = connect(conn, cmd.getName(), privateIp, cmdPort);
-            if (result != null) {
-                return new CheckSshAnswer(cmd, "Can not ping System vm " + vmName + "due to:" + result);
-            }
-            destroyPatchVbd(conn, vmName);
-        } catch (Exception e) {
-            return new CheckSshAnswer(cmd, e);
-        }
-
-        if (s_logger.isDebugEnabled()) {
-            s_logger.debug("Ping command port succeeded for vm " + vmName);
-        }
-
-        return new CheckSshAnswer(cmd);
-    }
-
-    private HashMap<String, String> parseDefaultOvsRuleComamnd(String str) {
-        HashMap<String, String> cmd = new HashMap<String, String>();
-        String[] sarr = str.split("/");
-        for (int i = 0; i < sarr.length; i++) {
-            String c = sarr[i];
-            c = c.startsWith("/") ? c.substring(1) : c;
-            c = c.endsWith("/") ? c.substring(0, c.length() - 1) : c;
-            String[] p = c.split(";");
-            if (p.length != 2) {
-                continue;
-            }
-            if (p[0].equalsIgnoreCase("vlans")) {
-                p[1] = p[1].replace("@", "[");
-                p[1] = p[1].replace("#", "]");
-            }
-            cmd.put(p[0], p[1]);
-        }
-        return cmd;
-    }
-
-    private void cleanUpTmpDomVif(Connection conn, Network nw) {
-        List<VIF> vifs;
-        synchronized (_tmpDom0Vif) {
-            vifs = _tmpDom0Vif;
-            _tmpDom0Vif = new ArrayList<VIF>();
-        }
-
-        for (VIF v : vifs) {
-            String vifName = "unknown";
-            try {
-                VIF.Record vifr = v.getRecord(conn);
-                if (v.getNetwork(conn).getUuid(conn).equals(nw.getUuid(conn))) {
-                    Map<String, String> config = vifr.otherConfig;
-                    vifName = config.get("nameLabel");
-                    s_logger.debug("A VIF in dom0 for the network is found - so destroy the vif");
-                    v.destroy(conn);
-                    s_logger.debug("Destroy temp dom0 vif" + vifName + " success");
-                }
-            } catch (Exception e) {
-                s_logger.warn("Destroy temp dom0 vif " + vifName + "failed", e);
-            }
-        }
-    }
-
-    private Answer execute(PvlanSetupCommand cmd) {
-        Connection conn = getConnection();
-
-        String primaryPvlan = cmd.getPrimary();
-        String isolatedPvlan = cmd.getIsolated();
-        String op = cmd.getOp();
-        String dhcpName = cmd.getDhcpName();
-        String dhcpMac = cmd.getDhcpMac();
-        String dhcpIp = cmd.getDhcpIp();
-        String vmMac = cmd.getVmMac();
-        String networkTag = cmd.getNetworkTag();
-
-        XsLocalNetwork nw = null;
-        String nwNameLabel = null;
-        try {
-            nw = getNativeNetworkForTraffic(conn, TrafficType.Guest, networkTag);
-            nwNameLabel = nw.getNetwork().getNameLabel(conn);
-        } catch (XenAPIException e) {
-            s_logger.warn("Fail to get network", e);
-            return new Answer(cmd, false, e.toString());
-        } catch (XmlRpcException e) {
-            s_logger.warn("Fail to get network", e);
-            return new Answer(cmd, false, e.toString());
-        }
-
-        String result = null;
-        if (cmd.getType() == PvlanSetupCommand.Type.DHCP) {
-            result =
-                    callHostPlugin(conn, "ovs-pvlan", "setup-pvlan-dhcp", "op", op, "nw-label", nwNameLabel, "primary-pvlan", primaryPvlan, "isolated-pvlan", isolatedPvlan,
-                            "dhcp-name", dhcpName, "dhcp-ip", dhcpIp, "dhcp-mac", dhcpMac);
-            if (result == null || result.isEmpty() || !Boolean.parseBoolean(result)) {
-                s_logger.warn("Failed to program pvlan for dhcp server with mac " + dhcpMac);
-                return new Answer(cmd, false, result);
-            } else {
-                s_logger.info("Programmed pvlan for dhcp server with mac " + dhcpMac);
-            }
-        } else if (cmd.getType() == PvlanSetupCommand.Type.VM) {
-            result =
-                    callHostPlugin(conn, "ovs-pvlan", "setup-pvlan-vm", "op", op, "nw-label", nwNameLabel, "primary-pvlan", primaryPvlan, "isolated-pvlan", isolatedPvlan,
-                            "vm-mac", vmMac);
-            if (result == null || result.isEmpty() || !Boolean.parseBoolean(result)) {
-                s_logger.warn("Failed to program pvlan for vm with mac " + vmMac);
-                return new Answer(cmd, false, result);
-            } else {
-                s_logger.info("Programmed pvlan for vm with mac " + vmMac);
-            }
-        }
-        return new Answer(cmd, true, result);
-    }
-
-    @Override
-    public StartAnswer execute(StartCommand cmd) {
-        Connection conn = getConnection();
-        VirtualMachineTO vmSpec = cmd.getVirtualMachine();
-        String vmName = vmSpec.getName();
-        State state = State.Stopped;
-        VM vm = null;
-        // if a VDI is created, record its UUID to send back to the CS MS
-        Map<String, String> iqnToPath = new HashMap<String, String>();
-        try {
-            Set<VM> vms = VM.getByNameLabel(conn, vmName);
-            if (vms != null) {
-                for (VM v : vms) {
-                    VM.Record vRec = v.getRecord(conn);
-                    if (vRec.powerState == VmPowerState.HALTED) {
-                        v.destroy(conn);
-                    } else if (vRec.powerState == VmPowerState.RUNNING) {
-                        String host = vRec.residentOn.getUuid(conn);
-                        String msg = "VM " + vmName + " is runing on host " + host;
-                        s_logger.debug(msg);
-                        return new StartAnswer(cmd, msg, host);
-                    } else {
-                        String msg = "There is already a VM having the same name " + vmName + " vm record " + vRec.toString();
-                        s_logger.warn(msg);
-                        return new StartAnswer(cmd, msg);
-                    }
-                }
-            }
-            synchronized (_cluster.intern()) {
-                s_vms.put(_cluster, _name, vmName, State.Starting);
-            }
-            s_logger.debug("1. The VM " + vmName + " is in Starting state.");
-
-            Host host = Host.getByUuid(conn, _host.uuid);
-            vm = createVmFromTemplate(conn, vmSpec, host);
-
-            GPUDeviceTO gpuDevice = vmSpec.getGpuDevice();
-            if (gpuDevice != null) {
-                s_logger.debug("Creating VGPU for of VGPU type: " + gpuDevice.getVgpuType() + " in GPU group "
-                        + gpuDevice.getGpuGroup() + " for VM " + vmName );
-                createVGPU(conn, cmd, vm, gpuDevice);
-            }
-
-            for (DiskTO disk : vmSpec.getDisks()) {
-                VDI newVdi = prepareManagedDisk(conn, disk, vmName);
-
-                if (newVdi != null) {
-                    String path = newVdi.getUuid(conn);
-
-                    iqnToPath.put(disk.getDetails().get(DiskTO.IQN), path);
-                }
-
-                createVbd(conn, disk, vmName, vm, vmSpec.getBootloader(), newVdi);
-            }
-
-            if (vmSpec.getType() != VirtualMachine.Type.User) {
-                createPatchVbd(conn, vmName, vm);
-            }
-
-            for (NicTO nic : vmSpec.getNics()) {
-                createVif(conn, vmName, vm, vmSpec, nic);
-            }
-
-            startVM(conn, host, vm, vmName);
-
-            if (_isOvs) {
-                // TODO(Salvatore-orlando): This code should go
-                for (NicTO nic : vmSpec.getNics()) {
-                    if (nic.getBroadcastType() == Networks.BroadcastDomainType.Vswitch) {
-                        HashMap<String, String> args = parseDefaultOvsRuleComamnd(BroadcastDomainType.getValue(nic.getBroadcastUri()));
-                        OvsSetTagAndFlowCommand flowCmd =
-                                new OvsSetTagAndFlowCommand(args.get("vmName"), args.get("tag"), args.get("vlans"), args.get("seqno"), Long.parseLong(args.get("vmId")));
-                        OvsSetTagAndFlowAnswer r = execute(flowCmd);
-                        if (!r.getResult()) {
-                            s_logger.warn("Failed to set flow for VM " + r.getVmId());
-                        } else {
-                            s_logger.info("Success to set flow for VM " + r.getVmId());
-                        }
-                    }
-                }
-            }
-
-            if (_canBridgeFirewall) {
-                String result = null;
-                if (vmSpec.getType() != VirtualMachine.Type.User) {
-                    NicTO[] nics = vmSpec.getNics();
-                    boolean secGrpEnabled = false;
-                    for (NicTO nic : nics) {
-                        if (nic.isSecurityGroupEnabled() ||
-                                (nic.getIsolationUri() != null && nic.getIsolationUri().getScheme().equalsIgnoreCase(IsolationType.Ec2.toString()))) {
-                            secGrpEnabled = true;
-                            break;
-                        }
-                    }
-                    if (secGrpEnabled) {
-                        result = callHostPlugin(conn, "vmops", "default_network_rules_systemvm", "vmName", vmName);
-                        if (result == null || result.isEmpty() || !Boolean.parseBoolean(result)) {
-                            s_logger.warn("Failed to program default network rules for " + vmName);
-                        } else {
-                            s_logger.info("Programmed default network rules for " + vmName);
-                        }
-                    }
-
-                } else {
-                    //For user vm, program the rules for each nic if the isolation uri scheme is ec2
-                    NicTO[] nics = vmSpec.getNics();
-                    for (NicTO nic : nics) {
-                        if (nic.isSecurityGroupEnabled() || nic.getIsolationUri() != null &&
-                                nic.getIsolationUri().getScheme().equalsIgnoreCase(IsolationType.Ec2.toString())) {
-                            List<String> nicSecIps = nic.getNicSecIps();
-                            String secIpsStr;
-                            StringBuilder sb = new StringBuilder();
-                            if (nicSecIps != null) {
-                                for (String ip : nicSecIps) {
-                                    sb.append(ip).append(":");
-                                }
-                                secIpsStr = sb.toString();
-                            } else {
-                                secIpsStr = "0:";
-                            }
-                            result =
-                                    callHostPlugin(conn, "vmops", "default_network_rules", "vmName", vmName, "vmIP", nic.getIp(), "vmMAC", nic.getMac(), "vmID",
-                                            Long.toString(vmSpec.getId()), "secIps", secIpsStr);
-
-                            if (result == null || result.isEmpty() || !Boolean.parseBoolean(result)) {
-                                s_logger.warn("Failed to program default network rules for " + vmName + " on nic with ip:" + nic.getIp() + " mac:" + nic.getMac());
-                            } else {
-                                s_logger.info("Programmed default network rules for " + vmName + " on nic with ip:" + nic.getIp() + " mac:" + nic.getMac());
-                            }
-                        }
-                    }
-                }
-            }
-
-            state = State.Running;
-
-            StartAnswer startAnswer = new StartAnswer(cmd);
-
-            startAnswer.setIqnToPath(iqnToPath);
-
-            return startAnswer;
-        } catch (Exception e) {
-            s_logger.warn("Catch Exception: " + e.getClass().toString() + " due to " + e.toString(), e);
-            String msg = handleVmStartFailure(conn, vmName, vm, "", e);
-
-            StartAnswer startAnswer = new StartAnswer(cmd, msg);
-
-            startAnswer.setIqnToPath(iqnToPath);
-
-            return startAnswer;
-        } finally {
-            synchronized (_cluster.intern()) {
-                if (state != State.Stopped) {
-                    s_vms.put(_cluster, _name, vmName, state);
-                    s_logger.debug("2. The VM " + vmName + " is in " + state + " state.");
-                } else {
-                    s_vms.remove(_cluster, _name, vmName);
-                    s_logger.debug("The VM is in stopped state, detected problem during startup : " + vmName);
-                }
-            }
-        }
-    }
-
-    // the idea here is to see if the DiskTO in question is from managed storage and
-    // does not yet have an SR
-    // if no SR, create it and create a VDI in it
-    private VDI prepareManagedDisk(Connection conn, DiskTO disk, String vmName) throws Exception {
-        Map<String, String> details = disk.getDetails();
-
-        if (details == null) {
-            return null;
-        }
-
-        boolean isManaged = new Boolean(details.get(DiskTO.MANAGED)).booleanValue();
-
-        if (!isManaged) {
-            return null;
-        }
-
-        String iqn = details.get(DiskTO.IQN);
-
-        Set<SR> srNameLabels = SR.getByNameLabel(conn, iqn);
-
-        if (srNameLabels.size() != 0) {
-            return null;
-        }
-
-        String vdiNameLabel = vmName + "-DATA";
-
-        return prepareManagedStorage(conn, details, null, vdiNameLabel);
-    }
-
-    protected SR prepareManagedSr(Connection conn, Map<String, String> details) {
-        String iScsiName = details.get(DiskTO.IQN);
-        String storageHost = details.get(DiskTO.STORAGE_HOST);
-        String chapInitiatorUsername = details.get(DiskTO.CHAP_INITIATOR_USERNAME);
-        String chapInitiatorSecret = details.get(DiskTO.CHAP_INITIATOR_SECRET);
-
-        return getIscsiSR(conn, iScsiName, storageHost, iScsiName, chapInitiatorUsername, chapInitiatorSecret, true);
-    }
-
-    protected VDI prepareManagedStorage(Connection conn, Map<String, String> details, String path, String vdiNameLabel) throws Exception {
-        SR sr = prepareManagedSr(conn, details);
-
-        VDI vdi = getVDIbyUuid(conn, path, false);
-
-        if (vdi == null) {
-            Long volumeSize = Long.parseLong(details.get(DiskTO.VOLUME_SIZ

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