def get_host_manage_interface_infor(self):
"""
The manage interface, or the default interface configured with a managed IP
:return:
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
try:
host_ref = self._hypervisor_handler.xenapi.host.get_all()[0]
pif_ref = self._hypervisor_handler.xenapi.host.get_management_interface(
host_ref)
pif_record = self._hypervisor_handler.xenapi.PIF.get_record(
pif_ref)
except Exception as error:
log.exception("Except when get host manage interface: %s", error)
return {}
default_infor = {}
default_infor.setdefault('device', pif_record.get('device', None))
default_infor.setdefault('IP', pif_record.get('IP', None))
default_infor.setdefault('DNS', pif_record.get('DNS', None))
default_infor.setdefault('MAC', pif_record.get('MAC', None))
default_infor.setdefault('gateway', pif_record.get('gateway', None))
default_infor.setdefault('netmask', pif_record.get('netmask', None))
return default_infor
def get_host_cpu_info(self):
"""
Return HV CPU info: cpu speed: MHZ;
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
ret_cpu_dict = {}
try:
host_ref = self._hypervisor_handler.xenapi.host.get_all()[0]
cpu_info = self._hypervisor_handler.xenapi.host.get_cpu_info(
host_ref)
ret_cpu_dict['cpu_model'] = cpu_info.get('model', "")
ret_cpu_dict['cpu_modelname'] = cpu_info.get('modelname', "")
ret_cpu_dict['cpu_cores'] = cpu_info.get("cpu_count", 0)
ret_cpu_dict['cpu_speed'] = cpu_info.get('speed', "0")
ret_cpu_dict['cpu_sockets'] = cpu_info.get("socket_count", 0)
# number of threads per core, xenserver6.5 has no infor about this, set default to 2
ret_cpu_dict['thread_per_core'] = 2
# number of cores per socket
ret_cpu_dict['cores_per_socket'] = int(
ret_cpu_dict['cpu_cores']) / int(
ret_cpu_dict['cpu_sockets']) / int(
ret_cpu_dict['thread_per_core'])
except Exception, error:
log.exception("Exceptions when get host cpu infor: %s", error)
return ret_cpu_dict
def set_vm_vcpu_live(self, inst_name, vcpu_num):
"""
set the vcpu numbers for a running VM; and set vcpus in the config file when domain is deactive
:param inst_name:
:param vcpu_num: should be str of a int number
:return: True or False
"""
dom = self._get_domain_handler(domain_name=inst_name)
if dom is None:
return False
vcpu_num = int(vcpu_num)
if vcpu_num > self.get_vm_vcpu_max(inst_name):
log.error("vCpus number [%s] exceed the limit of max vcpus: %s", vcpu_num, dom.maxVcpus())
return False
try:
if dom.isActive():
# dom.setVcpus(vcpu_num) # only effect the live domain, when power off, the config lose
ret = dom.setVcpusFlags(vcpu_num, libvirt.VIR_DOMAIN_AFFECT_LIVE | libvirt.VIR_DOMAIN_AFFECT_CONFIG)
else:
ret = dom.setVcpusFlags(vcpu_num, libvirt.VIR_DOMAIN_AFFECT_CURRENT)
except libvirtError as error:
log.exception("Exceptions when set vcpu lively: %s", error)
return False
return ret == 0
def delete_instance(self, inst_name):
'''
undefine:If the domain is running, it's converted to transient domain, without stopping it.
If the domain is inactive, the domain configuration is removed.
'''
domain = self._get_domain_handler(inst_name)
if not domain:
return True
if domain.isActive():
domain.destroy(
) # It will shutdown the domain force, if it is already shutdown, libvirtError will raise
try:
ret = domain.undefine()
if ret == 0:
target_disk = VM_HOUSE + inst_name + ".qcow2"
cmd = "rm -f %s" % target_disk
log.debug("remove the disk file for %s: %s", inst_name, cmd)
p = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=True)
_, perr = p.communicate()
if perr:
log.error("Deleting the disk for vm %s meet an error:%s",
inst_name, perr)
return False
return ret == 0
except Exception, error:
log.exception(error)
return False
def update_ip_infor_to_database(inst_name, vif_index=None, ip=None, host_ip=None):
"""
As the IP for xenserver'VM is not accessable when it is down, so update it with user's input
:param inst_name:
:param vif_index: vif index
:param ip: the IP on vif
:param host_ip: Host server IP
:return:
"""
log.info("Update [%s] IP information [%s, %s] to database.", inst_name, vif_index, ip)
sync_data = {}
if host_ip:
sync_data['vm_host_ip'] = host_ip
if vif_index == "0":
sync_data["first_ip"] = ip
elif vif_index == "1":
sync_data["second_ip"] = ip
else:
log.warn("Database only record the first and second IP for VM.")
if not sync_data:
return True
db_driver = DbFactory.get_db_driver("VirtHost")
try:
#json_data = json.dumps(sync_data)
ret = db_driver.update(hostname=inst_name, data=sync_data)
except Exception as error:
log.exception("update IP information raise error: %s", error)
ret = False
if not ret:
log.warn("Update IP information to database with ret: [%s], data: %s", ret, sync_data)
return ret
def destroy_vif(self, inst_name, vif_index):
"""
@param vif_index: index of virtual interface in guest VM
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
vif_ref = self._get_vif_by_index(inst_name, vif_index)
if vif_ref is None:
log.error(
"No virtual interface device found with index [%s] when try to destroy vif.",
vif_index)
return False
# unplug in allowed_operations, means the vif has plugged in VM
if 'unplug' in self._hypervisor_handler.xenapi.VIF.get_record(
vif_ref)['allowed_operations']:
log.error(
"Error when destroy, please firstly unplug the VIF or power off the VM."
)
return False
try:
self._hypervisor_handler.xenapi.VIF.destroy(vif_ref)
except Exception as error:
log.exception("Exceptions raised when destroy VIF:%s", error)
return False
return True
def power_off_vm(self, inst_name):
"""
@see: void shutdown (session ref session_id, VM ref vm), it will attempts to
first clean shutdown a VM and if it should fail then perform a hard shutdown on it.
"""
log.debug("Start power off vm [%s].", inst_name)
if self.is_instance_halted(inst_name):
log.info("VM [%s] is already not running.", inst_name)
return True
handler = self.get_handler()
if handler is None:
log.error("Can not get handler when try to power off VM [%s].",
inst_name)
return False
vm_ref = handler.xenapi.VM.get_by_name_label(inst_name)[0]
try:
handler.xenapi.VM.shutdown(vm_ref)
time.sleep(0.5)
except Exception, error:
log.exception("Exception raised: %s when shutdown VM [%s].", error,
inst_name)
return False
def get_disk_size(self, inst_name, device_num):
"""
:param inst_name: VM name
:param device_num: the disk index number
:return: return size in GB, or 0 if no device found
"""
disk_list = self.__get_disk_elements_list(inst_name)
try:
disk_element = disk_list[int(device_num)]
except IndexError:
log.error("No disk found with device number: %s", device_num)
return 0
source = disk_element.find("source")
if source is None:
return 0
file_path = source.get("file", None)
try:
volume_obj = self._hypervisor_handler.storageVolLookupByPath(file_path)
# volume_list.info(): type, Capacity, Allocation(used)
return volume_obj.info()[1] / 1024.0 / 1024.0 / 1024.0
except (TypeError, IndexError) as error:
log.exception("Exceptions raise when get disk size: %s", error)
return 0
def set_vm_static_memory(self, inst_name, memory_max=None, memory_min=None):
"""
set memory for a inactive domain
:param inst_name:
:param memory_max: size of GB
:param memory_min: size of GB
:return:
"""
# dom.setMaxMemory() need dom to be inactive
dom = self._get_domain_handler(domain_name=inst_name)
if dom is None:
return False
if dom.isActive():
log.error("Set domain max memory need it to be stopped.")
return False
gitabyte = 1024 * 1024 # unit is KB
if memory_max:
memory_size = int(memory_max) * gitabyte
elif memory_min:
log.info("Don't support min memory set.")
return True
else:
log.error("Neither maxMemory nor minMemory is supplied.")
return False
# dom.setMemoryFlags(memory_size, libvirt.VIR_DOMAIN_AFFECT_CURRENT|libvirt.VIR_DOMAIN_MEM_MAXIMUM) also OK
try:
ret = dom.setMaxMemory(memory_size)
except libvirtError as error:
log.exception("Exception: %s", error)
return False
return ret == 0
def set_vm_dynamic_memory(self, inst_name, memory_max=None, memory_min=None):
"""
set memory for a domain, if it is active, set it lively and the config file, if it is deactive, set the config file
:param inst_name:
:param memory_max:
:param memory_min:
:return:
"""
dom = self._get_domain_handler(domain_name=inst_name)
if dom is None:
return False
gitabyte = 1024 * 1024 # unit is KB
if memory_max:
memory_size = int(memory_max) * gitabyte
elif memory_min:
log.info("Don't support min memory set.")
return True
else:
log.error("Neither maxMemory nor minMemory is supplied.")
return False
try:
if dom.isActive():
ret = dom.setMemoryFlags(memory_size, libvirt.VIR_DOMAIN_AFFECT_LIVE | libvirt.VIR_DOMAIN_AFFECT_CONFIG)
else:
ret = dom.setMemoryFlags(memory_size) # dom.setMemory need dom to be active
except libvirtError as error:
log.exception("Exception: %s", error)
return False
return ret == 0
def delete_instance(self, inst_name, delete_disk=False):
'''
undefine:If the domain is running, it's converted to transient domain, without stopping it.
If the domain is inactive, the domain configuration is removed.
'''
domain = self._get_domain_handler(inst_name)
if not domain:
return True
if domain.isActive():
log.info("Try to power off vm [%s] gracefully.", inst_name)
ret = domain.destroyFlags(flags=libvirt.VIR_DOMAIN_DESTROY_GRACEFUL)
if ret != 0:
log.info("Power off failed, try to poweroff forcely.")
domain.destroy() # It will shutdown the domain force, if it is already shutdown, libvirtError will raise
try:
self.detach_disk_from_domain(inst_name, force=delete_disk)
except libvirtError:
pass
try:
ret = domain.undefine() # may use undefineFlags to handler managed save image or snapshots
except libvirtError as error:
log.exception("Exception raise when undefine domain [%s]: %s.", inst_name, error)
return False
return ret == 0
def set_vm_vcpu_live(self, inst_name, vcpu_num):
"""
set the vcpu numbers for a running VM
:param inst_name:
:param vcpu_num: should be str of a int number
:return: True or False
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
try:
vm_ref = self._hypervisor_handler.xenapi.VM.get_by_name_label(
inst_name)[0]
cpu_max = self._hypervisor_handler.xenapi.VM.get_VCPUs_max(vm_ref)
if int(vcpu_num) > int(cpu_max):
log.warn(
"VCPU number exceed the max cpu number:%s, will set it to the max instead.",
cpu_max)
vcpu_num = cpu_max
self._hypervisor_handler.xenapi.VM.set_VCPUs_number_live(
vm_ref, str(vcpu_num))
return True
except Exception, error:
log.exception("Raise exceptions: [%s].", error)
return False
def get_handler(self):
'''
return the handler of the virt_driver
'''
if self._hypervisor_handler is not None:
return self._hypervisor_handler
if self.hostname is None:
self._hypervisor_handler = XenAPI.xapi_local() #no __nonzero__, can not use if/not for bool test
else:
log.debug("connecting to %s with user:%s,passwd:%s", "http://" + str(self.hostname), self.user, self.passwd)
self._hypervisor_handler = XenAPI.Session("http://" + str(self.hostname))
old = signal.signal(signal.SIGALRM, self.timeout_handler)
signal.alarm(4) # connetctions timeout set to 5 secs
try:
self._hypervisor_handler.xenapi.login_with_password(self.user, self.passwd, API_VERSION_1_1, 'XenVirtDriver')
except Exception as error:
log.warn("Exception raised: %s when get handler.", error)
log.info("Retry connecting to :%s", "https://" + str(self.hostname))
self._hypervisor_handler = XenAPI.Session("https://" + str(self.hostname))
signal.alarm(4)
try:
self._hypervisor_handler.xenapi.login_with_password(self.user, self.passwd, API_VERSION_1_1, 'XenVirtDriver')
except Exception as errors:
log.exception("Exception errors:%s when get handler", errors)
return None
finally:
signal.alarm(0)
signal.signal(signal.SIGALRM, old)
log.debug("Get handler ID in vnet driver: %s", id(self._hypervisor_handler))
return self._hypervisor_handler
def unplug_vif_from_vm(self, inst_name, vif_index):
"""
Hot-unplug the specified VIF, dynamically unattaching it from the running VM
@param vif_index: virtual interface index
@note It should check the power_state before use this API
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
vif_ref = self._get_vif_by_index(inst_name, vif_index)
if vif_ref is None:
log.error("No vif found with index [%s] when try to detach vif.",
vif_index)
return False
vm_ref = self._hypervisor_handler.xenapi.VIF.get_VM(vif_ref)
power_status = self._hypervisor_handler.xenapi.VM.get_record(
vm_ref)['power_state']
allowed_opera = self._hypervisor_handler.xenapi.VIF.get_record(
vif_ref)['allowed_operations']
if 'unplug' not in allowed_opera and power_status == 'Running':
log.info("VIF [%s] is already unpluged.", vif_index)
return True
try:
self._hypervisor_handler.xenapi.VIF.unplug(vif_ref)
except Exception as error:
log.exception("Exceptions raised when unplug a VIF:%s", error)
return False
return True
def set_vm_vcpu_max(self, inst_name, vcpu_num):
"""
set the vcpu numbers for a halted VM
:param inst_name:
:param vcpu_num:
:return: True or False
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
vcpu_num = int(vcpu_num)
try:
vm_ref = self._hypervisor_handler.xenapi.VM.get_by_name_label(
inst_name)[0]
# 0 < VCPUs_at_startup <= VCPUs_max
cpu_at_start = self._hypervisor_handler.xenapi.VM.get_VCPUs_at_startup(
vm_ref)
if vcpu_num < int(cpu_at_start):
log.warn(
"The max cpu number is smaller than the live number [%s] and will change live cpu to it.",
cpu_at_start)
self._hypervisor_handler.xenapi.VM.set_VCPUs_at_startup(
vm_ref, str(vcpu_num))
self._hypervisor_handler.xenapi.VM.set_VCPUs_max(
vm_ref, str(vcpu_num))
return True
except Exception, error:
log.exception("Raise exceptions: [%s].", error)
return False
def get_host_mem_info(self):
"""
Return HV memory info: Unit is GB
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
ret_mem_dict = {}
try:
host_ref = self._hypervisor_handler.xenapi.host.get_all()[0]
host_metrics_ref = self._hypervisor_handler.xenapi.host.get_metrics(
host_ref)
total = self._hypervisor_handler.xenapi.host_metrics.get_memory_total(
host_metrics_ref)
free = self._hypervisor_handler.xenapi.host_metrics.get_memory_free(
host_metrics_ref)
except Exception as error:
log.exception("Exception raised when get host memory infor:%s",
error)
return ret_mem_dict
ret_mem_dict['size_total'] = float("%.3f" %
(float(total) / 1024 / 1024 / 1024))
ret_mem_dict['size_free'] = float("%.3f" %
(float(free) / 1024 / 1024 / 1024))
ret_mem_dict['size_used'] = float(
"%.3f" % (ret_mem_dict['size_total'] - ret_mem_dict['size_free']))
return ret_mem_dict
def set_vm_memory_live(self, inst_name, memory_target):
"""
:param memory_target: Memory in GB, set dynamic_max and dynamic_min to the target size
:return:
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
if not self.is_instance_running(inst_name=inst_name):
log.error("Set live memory need VM to be running.")
return False
try:
vm_ref = self._hypervisor_handler.xenapi.VM.get_by_name_label(
inst_name)[0]
gb = 1024.0 * 1024.0 * 1024.0
memory_size = int(gb * float(memory_target))
# set_memory_target_live has been deprecated
# self._hypervisor_handler.xenapi.VM.set_memory_target_live(vm_ref, str(memory_size))
self._hypervisor_handler.xenapi.VM.set_memory_dynamic_range(
vm_ref, str(memory_size), str(memory_size))
return True
except Exception as error:
log.exception("Exception raise when set live memory: %s", error)
return False
def get_host_storage_info(self, storage_name="Local storage"):
"""
Return HV storage info: Unit is GB
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
ret_storage_dict = {}
try:
sr_ref = self._hypervisor_handler.xenapi.SR.get_by_name_label(
storage_name)[0]
except Exception as error:
log.exception("No storage repository named: [%s], %s",
storage_name, error)
return ret_storage_dict
total = self._hypervisor_handler.xenapi.SR.get_physical_size(sr_ref)
used = self._hypervisor_handler.xenapi.SR.get_physical_utilisation(
sr_ref)
ret_storage_dict['size_total'] = float(
"%.3f" % (float(total) / 1024 / 1024 / 1024))
ret_storage_dict['size_used'] = float(
"%.3f" % (float(used) / 1024 / 1024 / 1024))
ret_storage_dict['size_free'] = float(
"%.3f" %
(ret_storage_dict['size_total'] - ret_storage_dict['size_used']))
return ret_storage_dict
def power_off_vm(self, inst_name):
"""
current we do not consider the power states
:param inst_name:
:return:
"""
domain = self._get_domain_handler(domain_name=inst_name)
if not domain:
return False
try:
# flags will prevent the forceful termination of the guest, and will instead
# return an error if the guest doesn't terminate by the end of the timeout
if domain.isActive():
ret = domain.destroyFlags(
flags=libvirt.VIR_DOMAIN_DESTROY_GRACEFUL
) # VIR_DOMAIN_DESTROY_GRACEFUL = 1
if ret != 0:
ret = domain.destroyFlags(
flags=libvirt.VIR_DOMAIN_DESTROY_DEFAULT)
return ret == 0
else:
return True
except Exception as e:
log.exception(e)
return False
def __init__(self, user="******", passwd="admin"):
super(HostDbDriver, self).__init__(user, passwd)
self.db_host = DB_HOST
self.login_url = LOGIN_URL
self.logout_url = LOGOUT_URL
self.url = None
login_data = {'username': self.user, 'password': self.passwd}
try:
self.session = requests.Session()
login_res = self.session.post(self.login_url, data=login_data)
res_content = json.loads(login_res.content)
if res_content[
'status'] == 1: # the success check depend on the login html
log.debug("Login url [%s] check with username [%s] success.",
self.db_host, self.user)
else:
log.error("Login url [%s] check with username [%s] failed.",
self.db_host, self.user)
self.session = None
except requests.exceptions.ConnectionError as connerror:
log.exception("Connection exception: %s", connerror)
self.session = None
except Exception as error:
log.exception("Exception when init session: %s", error)
self.session = None
def add_vdisk_to_vm(self, inst_name, storage_name='Local storage', size=2):
"""
@param inst_name: the name of VM
@param storage_name: which storage repository the virtual disk put
@param size: the disk size
"""
handler = self.get_handler()
userdevice = self._get_available_device_num(inst_name)
if not userdevice:
return False
log.info("Start to add virtual disk [%s] to VM: [%s]", userdevice,
inst_name)
name_description = "VDI created by API, on VM: %s, SR: %s" % (
inst_name, storage_name)
record = {
"name_label": inst_name + " data " + userdevice,
"name_description": name_description
}
try:
sr_ref = handler.xenapi.SR.get_by_name_label(storage_name)[0]
except Exception, error:
log.exception("No storage named [%s], exception: %s", storage_name,
error)
return False
def is_IP_available(self,
vif_ip=None,
vif_netmask=None,
device=None,
network=None,
bridge=None):
"""
check if a IP and Netmask usable
"""
# No ip , don't need to check
if not vif_ip:
return True
dest_metmask = ""
dest_gateway = None
if device is not None:
try:
device_info = self.vnet_driver.get_device_infor(
device_name=device)
dest_metmask = device_info["netmask"]
dest_gateway = device_info['gateway']
except KeyError as error:
log.exception(str(error))
elif network is not None or bridge is not None:
# TODO: need to add API to get network infor accroding to network or bridge
pass
if vif_netmask:
if dest_metmask and dest_metmask != vif_netmask:
log.error(
"Netmask [%s] is not corresponding with the target network.",
vif_netmask)
return False
else: # get the netmask on device as the default one
vif_netmask = dest_metmask
log.debug("VIF IP is: %s, netmask is: %s", vif_ip, vif_netmask)
if not vif_netmask: # No default netmask and no given
log.warn("No netmask given, the default one is '255.255.255.0'.")
else:
vif_gateway = dest_gateway if dest_gateway else None
if not IpCheck.is_valid_ipv4_parameter(
vif_ip, vif_netmask, gateway=vif_gateway):
return False
# First check it from database
if self.check_ip_used(vif_ip):
log.error("Ip address [%s] already in used.(Check from database).",
vif_ip)
return False
# This ping test take a second, put it at last.
if is_IP_pingable(vif_ip):
log.error("Ipaddress [%s] is already be used(Ping test).", vif_ip)
return False
return True
def set_mac_address(self, inst_name, eth_index, new_mac):
"""
<mac address='52:54:00:68:43:c2'/>
"""
domain = self._get_domain_handler(domain_name=inst_name)
if not domain:
log.error("Domain %s doesn't exist, set mac failed.", inst_name)
return False
if domain.isActive():
log.warn("New MAC will take effect after domain reboot.")
vif_list = self._get_dom_interfaces_elements_list(inst_name)
try:
interface = vif_list[eth_index]
mac_element = interface.find("mac")
old_mac = mac_element.get("address")
except IndexError:
log.exception("No interfaces at index [%s] find in domain [%s]",
eth_index, inst_name)
return False
tree = xmlEtree.fromstring(domain.XMLDesc())
mac_list = tree.findall('devices/interface/mac')
try:
for mac_element in mac_list:
if mac_element.get("address") == old_mac:
log.debug(
"Change old mac [%s] to new [%s] on interface index %s",
old_mac, new_mac, eth_index)
mac_element.set("address", new_mac)
except ValueError as error:
log.exception("Exception when set mac: %s on domain: [%s]", error,
inst_name)
return False
domain_xml = xmlEtree.tostring(tree)
# after change the xml, redeine it
hv_handler = self.get_handler()
if not hv_handler:
log.error("Can not connect to host: %s when create domain %s.",
self.hostname, inst_name)
return False
try:
# if failed it will raise libvirtError, return value is always a Domain object
_ = hv_handler.defineXML(domain_xml)
except libvirtError:
log.error(
"Create domain %s failed when define by xml after set MAC.",
inst_name)
return False
return True
def get_all_devices(self):
"""
@return: return a list of all the interfaces device name in host
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
try:
all_pifs = self._hypervisor_handler.xenapi.PIF.get_all()
return [self._hypervisor_handler.xenapi.PIF.get_device(pif) for pif in all_pifs]
except Exception as error:
log.exception(error)
return []
def _get_bridge_name_by_networkref(self, network_ref):
"""
:param network_ref:
:return: a bridge name or ""
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
try:
return self._hypervisor_handler.xenapi.network.get_bridge(network_ref)
except Exception as error:
log.exception("Raise exception when get bridge name: %s", error)
return ""
def _get_vm_metrics_record(self, inst_name):
"""
:return: a dict as :{'VCPUs_number': '8', 'memory_actual': '1073741824', 'VCPUs_params': {},
'VCPUs_utilisation': {'0': 0.0}}
"""
handler = self.get_handler()
try:
vm_ref = handler.xenapi.VM.get_by_name_label(inst_name)[0]
vm_metrics_ref = handler.xenapi.VM.get_metrics(vm_ref)
return handler.xenapi.VM_metrics.get_record(vm_metrics_ref)
except Exception, error:
log.exception("Exceptions raised:%s", error)
return {}
def get_host_storage_info(self, storage_name="default"):
"""
Return HV storage info: Unit is GB
"""
# Here only the VM storage directory calculated
ret_storage_dict = {}
hv_driver = self.get_handler()
try:
pool_dom = hv_driver.storagePoolLookupByName(storage_name)
pool_info = pool_dom.info()
except libvirtError, error:
log.exception("Exceptions: %s", error)
return ret_storage_dict
def respond_data(self):
"""
return the HTTP response data
:return:
"""
try:
if isinstance(self.resp, requests.models.Response):
return json.loads(self.resp.content).get('data', {})
elif isinstance(self.resp, str):
return json.loads(self.resp).get('data', {})
elif isinstance(self.resp, dict):
return self.resp.get('data', {})
except ValueError, error:
log.exception(error)
def get_vm_record(self, inst_name):
"""
return the record dict for inst_name
"""
handler = self.get_handler()
vm_record = {}
try:
vm_ref = handler.xenapi.VM.get_by_name_label(inst_name)[0]
record = handler.xenapi.VM.get_record(vm_ref)
except Exception, error:
log.exception("Exception: %s when get record for VM [%s].", error,
inst_name)
return {}
def _get_vm_ref(self, inst_name):
"""
@param inst_name: vm instance name
@return: return a reference object to the vm
"""
if self._hypervisor_handler is None:
self._hypervisor_handler = self.get_handler()
try:
vm_ref = self._hypervisor_handler.xenapi.VM.get_by_name_label(
inst_name)[0]
except Exception, error:
log.exception("Raise exceptions when get vm reference: [%s].",
error)
return None
