Python VMachineList.get_vmachine_by_name方法代码示例

# 需要导入模块: from ovs.dal.lists.vmachinelist import VMachineList [as 别名]
# 或者: from ovs.dal.lists.vmachinelist.VMachineList import get_vmachine_by_name [as 别名]
 def get_vmachine_by_name(name):
     """
     Retrieve the DAL vMachine object based on its name
     :param name: Name of the virtual machine
     :return: vMachine DAL object
     """
     return VMachineList.get_vmachine_by_name(vmname=name)

# 需要导入模块: from ovs.dal.lists.vmachinelist import VMachineList [as 别名]
# 或者: from ovs.dal.lists.vmachinelist.VMachineList import get_vmachine_by_name [as 别名]
    def create_from_template(name, machineguid, pmachineguid, description=None):
        """
        Create a new vmachine using an existing vmachine template

        :param machineguid: guid of the template vmachine
        :param name: name of new vmachine
        :param pmachineguid: guid of hypervisor to create new vmachine on
        :param description: Description for the machine
        :return: guid of the newly created vmachine | False on any failure
        """

        template_vm = VMachine(machineguid)
        if not template_vm.is_vtemplate:
            return False

        target_pm = PMachine(pmachineguid)
        target_hypervisor = Factory.get(target_pm)

        storagerouters = [sr for sr in StorageRouterList.get_storagerouters() if sr.pmachine_guid == target_pm.guid]
        if len(storagerouters) == 1:
            target_storagerouter = storagerouters[0]
        else:
            raise ValueError('Pmachine {0} has no StorageRouter assigned to it'.format(pmachineguid))
        routing_key = "sr.{0}".format(target_storagerouter.machine_id)

        vpool = None
        vpool_guids = set()
        if template_vm.vpool is not None:
            vpool = template_vm.vpool
            vpool_guids.add(vpool.guid)
        for disk in template_vm.vdisks:
            vpool = disk.vpool
            vpool_guids.add(vpool.guid)
        if len(vpool_guids) != 1:
            raise RuntimeError('Only 1 vpool supported on template disk(s) - {0} found!'.format(len(vpool_guids)))

        if not template_vm.pmachine.hvtype == target_pm.hvtype:
            raise RuntimeError('Source and target hypervisor not identical')

        # Currently, only one vPool is supported, so we can just use whatever the `vpool` variable above
        # was set to as 'the' vPool for the code below. This obviously will have to change once vPool mixes
        # are supported.

        target_storagedriver = None
        source_storagedriver = None
        for vpool_storagedriver in vpool.storagedrivers:
            if vpool_storagedriver.storagerouter.pmachine_guid == target_pm.guid:
                target_storagedriver = vpool_storagedriver
            if vpool_storagedriver.storagerouter.pmachine_guid == template_vm.pmachine_guid:
                source_storagedriver = vpool_storagedriver
        if target_storagedriver is None:
            raise RuntimeError('Volume not served on target hypervisor')

        source_hv = Factory.get(template_vm.pmachine)
        target_hv = Factory.get(target_pm)
        if not source_hv.is_datastore_available(source_storagedriver.storage_ip, source_storagedriver.mountpoint):
            raise RuntimeError('Datastore unavailable on source hypervisor')
        if not target_hv.is_datastore_available(target_storagedriver.storage_ip, target_storagedriver.mountpoint):
            raise RuntimeError('Datastore unavailable on target hypervisor')

        source_vm = source_hv.get_vm_object(template_vm.hypervisor_id)
        if not source_vm:
            raise RuntimeError('VM with key reference {0} not found'.format(template_vm.hypervisor_id))

        name_duplicates = VMachineList.get_vmachine_by_name(name)
        if name_duplicates is not None and len(name_duplicates) > 0:
            raise RuntimeError('A vMachine with name {0} already exists'.format(name))

        vm_path = target_hypervisor.get_vmachine_path(name, target_storagedriver.storagerouter.machine_id)

        new_vm = VMachine()
        new_vm.copy(template_vm)
        new_vm.hypervisor_id = ''
        new_vm.vpool = template_vm.vpool
        new_vm.pmachine = target_pm
        new_vm.name = name
        new_vm.description = description
        new_vm.is_vtemplate = False
        new_vm.devicename = target_hypervisor.clean_vmachine_filename(vm_path)
        new_vm.status = 'CREATED'
        new_vm.save()

        storagedrivers = [storagedriver for storagedriver in vpool.storagedrivers if storagedriver.storagerouter.pmachine_guid == new_vm.pmachine_guid]
        if len(storagedrivers) == 0:
            raise RuntimeError('Cannot find Storage Driver serving {0} on {1}'.format(vpool.name, new_vm.pmachine.name))

        disks = []
        disks_by_order = sorted(template_vm.vdisks, key=lambda x: x.order)
        for disk in disks_by_order:
            try:
                prefix = '{0}-clone'.format(disk.name)
                result = VDiskController.create_from_template(
                    diskguid=disk.guid,
                    devicename=prefix,
                    pmachineguid=target_pm.guid,
                    machinename=new_vm.name,
                    machineguid=new_vm.guid
                )
                disks.append(result)
                VMachineController._logger.debug('Disk appended: {0}'.format(result))
#.........这里部分代码省略.........

# 需要导入模块: from ovs.dal.lists.vmachinelist import VMachineList [as 别名]
# 或者: from ovs.dal.lists.vmachinelist.VMachineList import get_vmachine_by_name [as 别名]
    def update_from_voldrv(name, storagedriver_id):
        """
        This method will update/create a vmachine based on a given vmx/xml file
        :param name: Name of the vmx
        :param storagedriver_id: Storage Driver hosting the vmachine
        """

        pmachine = PMachineList.get_by_storagedriver_id(storagedriver_id)
        if pmachine.hvtype not in ['VMWARE', 'KVM']:
            return

        hypervisor = Factory.get(pmachine)
        name = hypervisor.clean_vmachine_filename(name)
        storagedriver = StorageDriverList.get_by_storagedriver_id(storagedriver_id)
        vpool = storagedriver.vpool
        machine_ids = [storagedriver.storagerouter.machine_id for storagedriver in vpool.storagedrivers]

        if hypervisor.should_process(name, machine_ids=machine_ids):
            if pmachine.hvtype == 'VMWARE':
                storagedriver = StorageDriverList.get_by_storagedriver_id(storagedriver_id)
                vpool = storagedriver.vpool
            else:
                vpool = None
            pmachine = PMachineList.get_by_storagedriver_id(storagedriver_id)
            mutex = volatile_mutex('{0}_{1}'.format(name, vpool.guid if vpool is not None else 'none'))
            try:
                mutex.acquire(wait=120)
                limit = 5
                exists = hypervisor.file_exists(storagedriver, name)
                while limit > 0 and exists is False:
                    time.sleep(1)
                    exists = hypervisor.file_exists(storagedriver, name)
                    limit -= 1
                if exists is False:
                    VMachineController._logger.info('Could not locate vmachine with name {0} on vpool {1}'.format(name, vpool.name))
                    vmachine = VMachineList.get_by_devicename_and_vpool(name, vpool)
                    if vmachine is not None:
                        VMachineController.delete_from_voldrv(name, storagedriver_id=storagedriver_id)
                    return
            finally:
                mutex.release()
            try:
                mutex.acquire(wait=5)
                vmachine = VMachineList.get_by_devicename_and_vpool(name, vpool)
                if not vmachine:
                    vmachines = VMachineList.get_vmachine_by_name(name)
                    if vmachines is not None:
                        vmachine = vmachines[0]
                if not vmachine:
                    vmachine = VMachine()
                    vmachine.vpool = vpool
                    vmachine.pmachine = pmachine
                    vmachine.status = 'CREATED'
                vmachine.devicename = name
                vmachine.save()
            finally:
                mutex.release()

            if pmachine.hvtype == 'KVM':
                try:
                    mutex.acquire(wait=120)
                    VMachineController.sync_with_hypervisor(vmachine.guid, storagedriver_id=storagedriver_id)
                    vmachine.status = 'SYNC'
                except:
                    vmachine.status = 'SYNC_NOK'
                finally:
                    mutex.release()
                vmachine.save()
        else:
            VMachineController._logger.info('Ignored invalid file {0}'.format(name))