On 06/16/2016 07:26 PM, Ramon Medeiros wrote:
When cloning a VM, it's needed to add a new mac address. model/vms.py was selection <interface type=network /> only. Using correct xpath framework, now all <interface> tag with type as attribute and <mac address> as a subelement, is selected. After all, they will received new mac address. This way, it's not needed to check if the interfaces has it own mac address.
Signed-off-by: Ramon Medeiros <ramonn@linux.vnet.ibm.com> --- model/vms.py | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/model/vms.py b/model/vms.py index f069c4e..9753a10 100644 --- a/model/vms.py +++ b/model/vms.py @@ -83,12 +83,10 @@ VM_ONLINE_UPDATE_PARAMS = ['graphics', 'groups', 'memory', 'users'] VM_OFFLINE_UPDATE_PARAMS = ['cpu_info', 'graphics', 'groups', 'memory',
'name', 'users']
+XPATH_DOMAIN_CHANGE_MAC = "./devices/interface[@type='%s']/mac[@address='%s']"
You don't need to filter the interface type as you are going to change all MAC address. So ./devices/interfaces/mac[@address=%s] should work for your matters.
XPATH_DOMAIN_DISK = "/domain/devices/disk[@device='disk']/source/@file" XPATH_DOMAIN_DISK_BY_FILE = "./devices/disk[@device='disk']/source[@file='%s']" XPATH_DOMAIN_NAME = '/domain/name' -XPATH_DOMAIN_MAC = "/domain/devices/interface[@type='network']/mac/@address" -XPATH_DOMAIN_MAC_BY_ADDRESS = "./devices/interface[@type='network']/"\ - "mac[@address='%s']" XPATH_DOMAIN_MEMORY = '/domain/memory' XPATH_DOMAIN_MEMORY_UNIT = '/domain/memory/@unit' XPATH_DOMAIN_UUID = '/domain/uuid' @@ -97,6 +95,7 @@ XPATH_DOMAIN_DEV_CPU_ID = '/domain/devices/spapr-cpu-socket/@id' XPATH_CPU = './cpu' XPATH_NAME = './name' XPATH_NUMA_CELL = './cpu/numa/cell'
+XPATH_MAC = "./devices/interface[@type]/mac/[@address]"
The same I commented above.
XPATH_TOPOLOGY = './cpu/topology' XPATH_VCPU = './vcpu' XPATH_MAX_MEMORY = './maxMemory' @@ -417,19 +416,25 @@ class VMModel(object): The XML descriptor <xml> with the new MAC addresses instead of the old ones. """ - old_macs = xpath_get_text(xml, XPATH_DOMAIN_MAC) - new_macs = [] + # get dict with macs and interfaces + old_macs_int = {}
+ for node in ET.fromstring(xml).findall(XPATH_MAC): + old_macs_int[node.get("address")] = node.getparent().get("type")
Why do you need to record the network type and it will not be changed? Don't you need to get only the MAC address value and identify a new value to be placed on? And seems you can continue to use xpath_get_text() to do that.
- for mac in old_macs: + # update mac address + new_macs = [] + for mac_addr in old_macs_int: while True: new_mac = model.vmifaces.VMIfacesModel.random_mac() # make sure the new MAC doesn't conflict with the original VM # and with the new values on the new VM. - if new_mac not in (old_macs + new_macs): + if new_mac not in (old_macs_int.keys() + new_macs): new_macs.append(new_mac) break
- xml = xml_item_update(xml, XPATH_DOMAIN_MAC_BY_ADDRESS % mac, + dev_type = old_macs_int[mac_addr] + xml = xml_item_update(xml, XPATH_DOMAIN_CHANGE_MAC % (dev_type, + mac_addr), new_mac, 'address')
return xml