Examples with Domain org.libvirt.Domain used on opensource projects

Example 86 with Domain

use of org.libvirt.Domain in project cosmic by MissionCriticalCloud.

the class LibvirtMigrateCommandWrapper method execute.

@Override
public Answer execute(final MigrateCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final String vmName = command.getVmName();
    String result = null;
    List<InterfaceDef> ifaces = null;
    List<LibvirtDiskDef> disks;
    Domain dm = null;
    Connect dconn = null;
    Domain destDomain = null;
    Connect conn = null;
    String xmlDesc;
    List<Ternary<String, Boolean, String>> vmsnapshots = null;
    try {
        final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
        conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName);
        ifaces = libvirtComputingResource.getInterfaces(conn, vmName);
        disks = libvirtComputingResource.getDisks(conn, vmName);
        dm = conn.domainLookupByName(vmName);
        /*
             * We replace the private IP address with the address of the destination host. This is because the VNC listens on
             * the private IP address of the hypervisor, but that address is ofcourse different on the target host.
             *
             * MigrateCommand.getDestinationIp() returns the private IP address of the target hypervisor. So it's safe to use.
             *
             * The Domain.migrate method from libvirt supports passing a different XML description for the instance to be used
             * on the target host.
             *
             * This is supported by libvirt-java from version 0.50.0
             *
             * CVE-2015-3252: Get XML with sensitive information suitable for migration by using VIR_DOMAIN_XML_MIGRATABLE
             * flag (value = 8) https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainXMLFlags
             *
             * Use VIR_DOMAIN_XML_SECURE (value = 1) prior to v1.0.0.
             */
        // 1000000 equals v1.0.0
        final int xmlFlag = conn.getLibVirVersion() >= 1000000 ? 8 : 1;
        xmlDesc = dm.getXMLDesc(xmlFlag).replace(libvirtComputingResource.getPrivateIp(), command.getDestinationIp());
        // delete the metadata of vm snapshots before migration
        vmsnapshots = libvirtComputingResource.cleanVMSnapshotMetadata(dm);
        dconn = libvirtUtilitiesHelper.retrieveQemuConnection("qemu+tcp://" + command.getDestinationIp() + "/system");
        // run migration in thread so we can monitor it
        s_logger.info("Live migration of instance " + vmName + " initiated");
        final ExecutorService executor = Executors.newFixedThreadPool(1);
        final Callable<Domain> worker = new MigrateKvmAsync(libvirtComputingResource, dm, dconn, xmlDesc, vmName, command.getDestinationIp());
        final Future<Domain> migrateThread = executor.submit(worker);
        executor.shutdown();
        long sleeptime = 0;
        while (!executor.isTerminated()) {
            Thread.sleep(100);
            sleeptime += 100;
            if (sleeptime == 1000) {
                final int migrateDowntime = libvirtComputingResource.getMigrateDowntime();
                if (migrateDowntime > 0) {
                    try {
                        final int setDowntime = dm.migrateSetMaxDowntime(migrateDowntime);
                        if (setDowntime == 0) {
                            s_logger.debug("Set max downtime for migration of " + vmName + " to " + String.valueOf(migrateDowntime) + "ms");
                        }
                    } catch (final LibvirtException e) {
                        s_logger.debug("Failed to set max downtime for migration, perhaps migration completed? Error: " + e.getMessage());
                    }
                }
            }
            if (sleeptime % 1000 == 0) {
                s_logger.info("Waiting for migration of " + vmName + " to complete, waited " + sleeptime + "ms");
            }
            // pause vm if we meet the vm.migrate.pauseafter threshold and not already paused
            final int migratePauseAfter = libvirtComputingResource.getMigratePauseAfter();
            if (migratePauseAfter > 0 && sleeptime > migratePauseAfter) {
                DomainState state = null;
                try {
                    state = dm.getInfo().state;
                } catch (final LibvirtException e) {
                    s_logger.info("Couldn't get VM domain state after " + sleeptime + "ms: " + e.getMessage());
                }
                if (state != null && state == DomainState.VIR_DOMAIN_RUNNING) {
                    try {
                        s_logger.info("Pausing VM " + vmName + " due to property vm.migrate.pauseafter setting to " + migratePauseAfter + "ms to complete migration");
                        dm.suspend();
                    } catch (final LibvirtException e) {
                        // pause could be racy if it attempts to pause right when vm is finished, simply warn
                        s_logger.info("Failed to pause vm " + vmName + " : " + e.getMessage());
                    }
                }
            }
        }
        s_logger.info("Migration thread for " + vmName + " is done");
        destDomain = migrateThread.get(10, TimeUnit.SECONDS);
        if (destDomain != null) {
            for (final LibvirtDiskDef disk : disks) {
                libvirtComputingResource.cleanupDisk(disk);
            }
        }
    } catch (final LibvirtException e) {
        s_logger.debug("Can't migrate domain: " + e.getMessage());
        result = e.getMessage();
    } catch (final InterruptedException e) {
        s_logger.debug("Interrupted while migrating domain: " + e.getMessage());
        result = e.getMessage();
    } catch (final ExecutionException e) {
        s_logger.debug("Failed to execute while migrating domain: " + e.getMessage());
        result = e.getMessage();
    } catch (final TimeoutException e) {
        s_logger.debug("Timed out while migrating domain: " + e.getMessage());
        result = e.getMessage();
    } finally {
        try {
            if (dm != null && result != null) {
                // restore vm snapshots in case of failed migration
                if (vmsnapshots != null) {
                    libvirtComputingResource.restoreVMSnapshotMetadata(dm, vmName, vmsnapshots);
                }
            }
            if (dm != null) {
                if (dm.isPersistent() == 1) {
                    dm.undefine();
                }
                dm.free();
            }
            if (dconn != null) {
                dconn.close();
            }
            if (destDomain != null) {
                destDomain.free();
            }
        } catch (final LibvirtException e) {
            s_logger.trace("Ignoring libvirt error.", e);
        }
    }
    if (result == null) {
        for (final InterfaceDef iface : ifaces) {
            // We don't know which "traffic type" is associated with
            // each interface at this point, so inform all vif drivers
            final List<VifDriver> allVifDrivers = libvirtComputingResource.getAllVifDrivers();
            for (final VifDriver vifDriver : allVifDrivers) {
                vifDriver.unplug(iface);
            }
        }
    }
    return new MigrateAnswer(command, result == null, result, null);
}

Example 87 with Domain

use of org.libvirt.Domain in project cosmic by MissionCriticalCloud.

the class LibvirtComputingResource method getDisks.

public List<LibvirtDiskDef> getDisks(final Connect conn, final String vmName) {
    final LibvirtDomainXmlParser parser = new LibvirtDomainXmlParser();
    Domain dm = null;
    try {
        dm = conn.domainLookupByName(vmName);
        parser.parseDomainXml(dm.getXMLDesc(0));
        return parser.getDisks();
    } catch (final LibvirtException e) {
        logger.debug("Failed to get dom xml: " + e.toString());
        return new ArrayList<>();
    } finally {
        try {
            if (dm != null) {
                dm.free();
            }
        } catch (final LibvirtException e) {
            logger.trace("Ignoring libvirt error.", e);
        }
    }
}

Example 88 with Domain

use of org.libvirt.Domain in project cosmic by MissionCriticalCloud.

the class LibvirtPlugNicCommandWrapper method execute.

@Override
public Answer execute(final PlugNicCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final NicTO nic = command.getNic();
    final String vmName = command.getVmName();
    Domain vm = null;
    try {
        final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
        final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName);
        vm = libvirtComputingResource.getDomain(conn, vmName);
        final List<InterfaceDef> pluggedNics = libvirtComputingResource.getInterfaces(conn, vmName);
        Integer nicnum = 0;
        for (final InterfaceDef pluggedNic : pluggedNics) {
            if (pluggedNic.getMacAddress().equalsIgnoreCase(nic.getMac())) {
                s_logger.debug("found existing nic for mac " + pluggedNic.getMacAddress() + " at index " + nicnum);
                return new PlugNicAnswer(command, true, "success");
            }
            nicnum++;
        }
        final VifDriver vifDriver = libvirtComputingResource.getVifDriver(nic.getType());
        final InterfaceDef interfaceDef = vifDriver.plug(nic, "Default - VirtIO capable OS (64-bit)", "");
        vm.attachDevice(interfaceDef.toString());
        return new PlugNicAnswer(command, true, "success");
    } catch (final LibvirtException e) {
        final String msg = " Plug Nic failed due to " + e.toString();
        s_logger.warn(msg, e);
        return new PlugNicAnswer(command, false, msg);
    } catch (final InternalErrorException e) {
        final String msg = " Plug Nic failed due to " + e.toString();
        s_logger.warn(msg, e);
        return new PlugNicAnswer(command, false, msg);
    } finally {
        if (vm != null) {
            try {
                vm.free();
            } catch (final LibvirtException l) {
                s_logger.trace("Ignoring libvirt error.", l);
            }
        }
    }
}

Example 89 with Domain

use of org.libvirt.Domain in project cosmic by MissionCriticalCloud.

the class LibvirtComputingResourceTest method testPlugNicCommandInternalError.

@Test
public void testPlugNicCommandInternalError() {
    final NicTO nic = Mockito.mock(NicTO.class);
    final String instanceName = "Test";
    final Type vmtype = Type.DomainRouter;
    final PlugNicCommand command = new PlugNicCommand(nic, instanceName, vmtype);
    final LibvirtUtilitiesHelper libvirtUtilitiesHelper = Mockito.mock(LibvirtUtilitiesHelper.class);
    final Connect conn = Mockito.mock(Connect.class);
    final Domain vm = Mockito.mock(Domain.class);
    final VifDriver vifDriver = Mockito.mock(VifDriver.class);
    final List<InterfaceDef> nics = new ArrayList<>();
    final InterfaceDef intDef = Mockito.mock(InterfaceDef.class);
    nics.add(intDef);
    when(libvirtComputingResource.getLibvirtUtilitiesHelper()).thenReturn(libvirtUtilitiesHelper);
    when(libvirtComputingResource.getInterfaces(conn, command.getVmName())).thenReturn(nics);
    when(intDef.getDevName()).thenReturn("eth0");
    when(intDef.getBrName()).thenReturn("br0");
    when(intDef.getMacAddress()).thenReturn("00:00:00:00");
    when(nic.getMac()).thenReturn("00:00:00:01");
    try {
        when(libvirtUtilitiesHelper.getConnectionByVmName(command.getVmName())).thenReturn(conn);
        when(libvirtComputingResource.getDomain(conn, instanceName)).thenReturn(vm);
        when(libvirtComputingResource.getVifDriver(nic.getType())).thenReturn(vifDriver);
        when(vifDriver.plug(nic, "Default - VirtIO capable OS (64-bit)", "")).thenThrow(InternalErrorException.class);
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    } catch (final InternalErrorException e) {
        fail(e.getMessage());
    }
    final LibvirtRequestWrapper wrapper = LibvirtRequestWrapper.getInstance();
    assertNotNull(wrapper);
    final Answer answer = wrapper.execute(command, libvirtComputingResource);
    assertFalse(answer.getResult());
    verify(libvirtComputingResource, times(1)).getLibvirtUtilitiesHelper();
    try {
        verify(libvirtUtilitiesHelper, times(1)).getConnectionByVmName(command.getVmName());
        verify(libvirtComputingResource, times(1)).getDomain(conn, instanceName);
        verify(libvirtComputingResource, times(1)).getVifDriver(nic.getType());
        verify(vifDriver, times(1)).plug(nic, "Default - VirtIO capable OS (64-bit)", "");
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    } catch (final InternalErrorException e) {
        fail(e.getMessage());
    }
}

Example 90 with Domain

use of org.libvirt.Domain in project cosmic by MissionCriticalCloud.

the class LibvirtComputingResourceTest method testMigrateCommand.

@Test
public void testMigrateCommand() {
    final Connect conn = Mockito.mock(Connect.class);
    final Connect dconn = Mockito.mock(Connect.class);
    final LibvirtUtilitiesHelper libvirtUtilitiesHelper = Mockito.mock(LibvirtUtilitiesHelper.class);
    final String vmName = "Test";
    final String destIp = "127.0.0.100";
    final boolean isWindows = false;
    final VirtualMachineTO vmTO = Mockito.mock(VirtualMachineTO.class);
    final boolean executeInSequence = false;
    final MigrateCommand command = new MigrateCommand(vmName, destIp, isWindows, vmTO, executeInSequence);
    when(libvirtComputingResource.getLibvirtUtilitiesHelper()).thenReturn(libvirtUtilitiesHelper);
    try {
        when(libvirtUtilitiesHelper.getConnectionByVmName(vmName)).thenReturn(conn);
        when(libvirtUtilitiesHelper.retrieveQemuConnection("qemu+tcp://" + command.getDestinationIp() + "/system")).thenReturn(dconn);
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    final InterfaceDef interfaceDef = Mockito.mock(InterfaceDef.class);
    final List<InterfaceDef> ifaces = new ArrayList<>();
    ifaces.add(interfaceDef);
    when(libvirtComputingResource.getInterfaces(conn, vmName)).thenReturn(ifaces);
    final LibvirtDiskDef diskDef = Mockito.mock(LibvirtDiskDef.class);
    final List<LibvirtDiskDef> disks = new ArrayList<>();
    disks.add(diskDef);
    when(libvirtComputingResource.getDisks(conn, vmName)).thenReturn(disks);
    final Domain dm = Mockito.mock(Domain.class);
    try {
        when(conn.domainLookupByName(vmName)).thenReturn(dm);
        when(libvirtComputingResource.getPrivateIp()).thenReturn("127.0.0.1");
        when(dm.getXMLDesc(8)).thenReturn("host_domain");
        when(dm.getXMLDesc(1)).thenReturn("host_domain");
        when(dm.isPersistent()).thenReturn(1);
        doNothing().when(dm).undefine();
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    } catch (final Exception e) {
        fail(e.getMessage());
    }
    final LibvirtRequestWrapper wrapper = LibvirtRequestWrapper.getInstance();
    assertNotNull(wrapper);
    final Answer answer = wrapper.execute(command, libvirtComputingResource);
    assertTrue(answer.getResult());
    verify(libvirtComputingResource, times(1)).getLibvirtUtilitiesHelper();
    try {
        verify(libvirtUtilitiesHelper, times(1)).getConnectionByVmName(vmName);
        verify(libvirtUtilitiesHelper, times(1)).retrieveQemuConnection("qemu+tcp://" + command.getDestinationIp() + "/system");
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    verify(libvirtComputingResource, times(1)).getInterfaces(conn, vmName);
    verify(libvirtComputingResource, times(1)).getDisks(conn, vmName);
    try {
        verify(conn, times(1)).domainLookupByName(vmName);
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    try {
        verify(dm, times(1)).getXMLDesc(8);
    } catch (final Throwable t) {
        try {
            verify(dm, times(1)).getXMLDesc(1);
        } catch (final LibvirtException e) {
            fail(e.getMessage());
        }
    }
}