pvc/client-cli/cli_lib/vm.py

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#!/usr/bin/env python3
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# vm.py - PVC CLI client function library, VM functions
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# Part of the Parallel Virtual Cluster (PVC) system
#
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# Copyright (C) 2018-2021 Joshua M. Boniface <joshua@boniface.me>
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#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3.
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#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import time
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import re
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import cli_lib.ansiprint as ansiprint
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from cli_lib.common import call_api, format_bytes, format_metric
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#
# Primary functions
#
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def vm_info(config, vm):
"""
Get information about (single) VM
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API endpoint: GET /api/v1/vm/{vm}
API arguments:
API schema: {json_data_object}
"""
response = call_api(config, 'get', '/vm/{vm}'.format(vm=vm))
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if response.status_code == 200:
if isinstance(response.json(), list) and len(response.json()) != 1:
# No exact match; return not found
return False, "VM not found."
else:
# Return a single instance if the response is a list
if isinstance(response.json(), list):
return True, response.json()[0]
# This shouldn't happen, but is here just in case
else:
return True, response.json()
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else:
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return False, response.json().get('message', '')
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def vm_list(config, limit, target_node, target_state):
"""
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Get list information about VMs (limited by {limit}, {target_node}, or {target_state})
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API endpoint: GET /api/v1/vm
API arguments: limit={limit}, node={target_node}, state={target_state}
API schema: [{json_data_object},{json_data_object},etc.]
"""
params = dict()
if limit:
params['limit'] = limit
if target_node:
params['node'] = target_node
if target_state:
params['state'] = target_state
response = call_api(config, 'get', '/vm', params=params)
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if response.status_code == 200:
return True, response.json()
else:
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return False, response.json().get('message', '')
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def vm_define(config, xml, node, node_limit, node_selector, node_autostart, migration_method):
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"""
Define a new VM on the cluster
API endpoint: POST /vm
API arguments: xml={xml}, node={node}, limit={node_limit}, selector={node_selector}, autostart={node_autostart}, migration_method={migration_method}
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API schema: {"message":"{data}"}
"""
params = {
'node': node,
'limit': node_limit,
'selector': node_selector,
'autostart': node_autostart,
'migration_method': migration_method
}
data = {
'xml': xml
}
response = call_api(config, 'post', '/vm', params=params, data=data)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_modify(config, vm, xml, restart):
"""
Modify the configuration of VM
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API endpoint: PUT /vm/{vm}
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API arguments: xml={xml}, restart={restart}
API schema: {"message":"{data}"}
"""
params = {
'restart': restart
}
data = {
'xml': xml
}
response = call_api(config, 'put', '/vm/{vm}'.format(vm=vm), params=params, data=data)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_rename(config, vm, new_name):
"""
Rename VM to new name
API endpoint: POST /vm/{vm}/rename
API arguments: new_name={new_name}
API schema: {"message":"{data}"}
"""
params = {
'new_name': new_name
}
response = call_api(config, 'post', '/vm/{vm}/rename'.format(vm=vm), params=params)
if response.status_code == 200:
retstatus = True
else:
retstatus = False
return retstatus, response.json().get('message', '')
def vm_metadata(config, vm, node_limit, node_selector, node_autostart, migration_method, provisioner_profile):
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"""
Modify PVC metadata of a VM
API endpoint: GET /vm/{vm}/meta, POST /vm/{vm}/meta
API arguments: limit={node_limit}, selector={node_selector}, autostart={node_autostart}, migration_method={migration_method} profile={provisioner_profile}
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API schema: {"message":"{data}"}
"""
params = dict()
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# Update any params that we've sent
if node_limit is not None:
params['limit'] = node_limit
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if node_selector is not None:
params['selector'] = node_selector
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if node_autostart is not None:
params['autostart'] = node_autostart
if migration_method is not None:
params['migration_method'] = migration_method
if provisioner_profile is not None:
params['profile'] = provisioner_profile
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# Write the new metadata
response = call_api(config, 'post', '/vm/{vm}/meta'.format(vm=vm), params=params)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_remove(config, vm, delete_disks=False):
"""
Remove a VM
API endpoint: DELETE /vm/{vm}
API arguments: delete_disks={delete_disks}
API schema: {"message":"{data}"}
"""
params = {
'delete_disks': delete_disks
}
response = call_api(config, 'delete', '/vm/{vm}'.format(vm=vm), params=params)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_state(config, vm, target_state, wait=False):
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"""
Modify the current state of VM
API endpoint: POST /vm/{vm}/state
API arguments: state={state}, wait={wait}
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API schema: {"message":"{data}"}
"""
params = {
'state': target_state,
'wait': str(wait).lower()
}
response = call_api(config, 'post', '/vm/{vm}/state'.format(vm=vm), params=params)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_node(config, vm, target_node, action, force=False, wait=False, force_live=False):
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"""
Modify the current node of VM via {action}
API endpoint: POST /vm/{vm}/node
API arguments: node={target_node}, action={action}, force={force}, wait={wait}, force_live={force_live}
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API schema: {"message":"{data}"}
"""
params = {
'node': target_node,
'action': action,
'force': str(force).lower(),
'wait': str(wait).lower(),
'force_live': str(force_live).lower()
}
response = call_api(config, 'post', '/vm/{vm}/node'.format(vm=vm), params=params)
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_locks(config, vm):
"""
Flush RBD locks of (stopped) VM
API endpoint: POST /vm/{vm}/locks
API arguments:
API schema: {"message":"{data}"}
"""
response = call_api(config, 'post', '/vm/{vm}/locks'.format(vm=vm))
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if response.status_code == 200:
retstatus = True
else:
retstatus = False
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return retstatus, response.json().get('message', '')
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def vm_vcpus_set(config, vm, vcpus, topology, restart):
"""
Set the vCPU count of the VM with topology
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
parsed_xml.vcpu._setText(str(vcpus))
parsed_xml.cpu.topology.set('sockets', str(topology[0]))
parsed_xml.cpu.topology.set('cores', str(topology[1]))
parsed_xml.cpu.topology.set('threads', str(topology[2]))
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
return vm_modify(config, vm, new_xml, restart)
def vm_vcpus_get(config, vm):
"""
Get the vCPU count of the VM
Calls vm_info to get VM XML.
Returns a tuple of (vcpus, (sockets, cores, threads))
"""
from lxml.objectify import fromstring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
vm_vcpus = int(parsed_xml.vcpu.text)
vm_sockets = parsed_xml.cpu.topology.attrib.get('sockets')
vm_cores = parsed_xml.cpu.topology.attrib.get('cores')
vm_threads = parsed_xml.cpu.topology.attrib.get('threads')
return True, (vm_vcpus, (vm_sockets, vm_cores, vm_threads))
def format_vm_vcpus(config, name, vcpus):
"""
Format the output of a vCPU value in a nice table
"""
output_list = []
name_length = 5
_name_length = len(name) + 1
if _name_length > name_length:
name_length = _name_length
vcpus_length = 6
sockets_length = 8
cores_length = 6
threads_length = 8
output_list.append(
'{bold}{name: <{name_length}} \
{vcpus: <{vcpus_length}} \
{sockets: <{sockets_length}} \
{cores: <{cores_length}} \
{threads: <{threads_length}}{end_bold}'.format(
name_length=name_length,
vcpus_length=vcpus_length,
sockets_length=sockets_length,
cores_length=cores_length,
threads_length=threads_length,
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
name='Name',
vcpus='vCPUs',
sockets='Sockets',
cores='Cores',
threads='Threads'
)
)
output_list.append(
'{bold}{name: <{name_length}} \
{vcpus: <{vcpus_length}} \
{sockets: <{sockets_length}} \
{cores: <{cores_length}} \
{threads: <{threads_length}}{end_bold}'.format(
name_length=name_length,
vcpus_length=vcpus_length,
sockets_length=sockets_length,
cores_length=cores_length,
threads_length=threads_length,
bold='',
end_bold='',
name=name,
vcpus=vcpus[0],
sockets=vcpus[1][0],
cores=vcpus[1][1],
threads=vcpus[1][2]
)
)
return '\n'.join(output_list)
def vm_memory_set(config, vm, memory, restart):
"""
Set the provisioned memory of the VM with topology
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
parsed_xml.memory._setText(str(memory))
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
return vm_modify(config, vm, new_xml, restart)
def vm_memory_get(config, vm):
"""
Get the provisioned memory of the VM
Calls vm_info to get VM XML.
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Returns an integer memory value.
"""
from lxml.objectify import fromstring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
vm_memory = int(parsed_xml.memory.text)
return True, vm_memory
def format_vm_memory(config, name, memory):
"""
Format the output of a memory value in a nice table
"""
output_list = []
name_length = 5
_name_length = len(name) + 1
if _name_length > name_length:
name_length = _name_length
memory_length = 6
output_list.append(
'{bold}{name: <{name_length}} \
{memory: <{memory_length}}{end_bold}'.format(
name_length=name_length,
memory_length=memory_length,
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
name='Name',
memory='RAM (M)'
)
)
output_list.append(
'{bold}{name: <{name_length}} \
{memory: <{memory_length}}{end_bold}'.format(
name_length=name_length,
memory_length=memory_length,
bold='',
end_bold='',
name=name,
memory=memory
)
)
return '\n'.join(output_list)
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def vm_networks_add(config, vm, network, macaddr, model, sriov, sriov_mode, restart):
"""
Add a new network to the VM
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
from random import randint
import cli_lib.network as pvc_network
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# Verify that the provided network is valid (not in SR-IOV mode)
if not sriov:
retcode, retdata = pvc_network.net_info(config, network)
if not retcode:
# Ignore the three special networks
if network not in ['upstream', 'cluster', 'storage']:
return False, "Network {} is not present in the cluster.".format(network)
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# Set the bridge prefix
if network in ['upstream', 'cluster', 'storage']:
br_prefix = 'br'
else:
br_prefix = 'vmbr'
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
if macaddr is None:
mac_prefix = '52:54:00'
random_octet_A = '{:x}'.format(randint(16, 238))
random_octet_B = '{:x}'.format(randint(16, 238))
random_octet_C = '{:x}'.format(randint(16, 238))
macaddr = '{prefix}:{octetA}:{octetB}:{octetC}'.format(
prefix=mac_prefix,
octetA=random_octet_A,
octetB=random_octet_B,
octetC=random_octet_C
)
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# Add an SR-IOV network
if sriov:
valid, sriov_vf_information = pvc_network.net_sriov_vf_info(config, domain_information['node'], network)
if not valid:
return False, 'Specified SR-IOV VF "{}" does not exist on VM node "{}".'.format(network, domain_information['node'])
# Add a hostdev (direct PCIe) SR-IOV network
if sriov_mode == 'hostdev':
bus_address = 'domain="0x{pci_domain}" bus="0x{pci_bus}" slot="0x{pci_slot}" function="0x{pci_function}"'.format(
pci_domain=sriov_vf_information['pci']['domain'],
pci_bus=sriov_vf_information['pci']['bus'],
pci_slot=sriov_vf_information['pci']['slot'],
pci_function=sriov_vf_information['pci']['function'],
)
device_string = '<interface type="hostdev"><mac address="{macaddr}"/><source><address type="pci" {bus_address}/></source><sriov_device>{network}</sriov_device></interface>'.format(
macaddr=macaddr,
bus_address=bus_address,
network=network
)
# Add a macvtap SR-IOV network
elif sriov_mode == 'macvtap':
device_string = '<interface type="direct"><mac address="{macaddr}"/><source dev="{network}" mode="passthrough"/></interface>'.format(
macaddr=macaddr,
network=network
)
else:
return False, "ERROR: Invalid SR-IOV mode specified."
# Add a normal bridged PVC network
else:
device_string = '<interface type="bridge"><mac address="{macaddr}"/><source bridge="{bridge}"/><model type="{model}"/></interface>'.format(
macaddr=macaddr,
bridge="{}{}".format(br_prefix, network),
model=model
)
device_xml = fromstring(device_string)
all_interfaces = parsed_xml.devices.find('interface')
if all_interfaces is None:
all_interfaces = []
for interface in all_interfaces:
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if sriov:
if sriov_mode == 'hostdev':
if interface.attrib.get('type') == 'hostdev':
interface_address = 'domain="{pci_domain}" bus="{pci_bus}" slot="{pci_slot}" function="{pci_function}"'.format(
interface.source.address.attrib.get('domain'),
interface.source.address.attrib.get('bus'),
interface.source.address.attrib.get('slot'),
interface.source.address.attrib.get('function')
)
if interface_address == bus_address:
return False, 'Network "{}" is already configured for VM "{}".'.format(network, vm)
elif sriov_mode == 'macvtap':
if interface.attrib.get('type') == 'direct':
interface_dev = interface.source.attrib.get('dev')
if interface_dev == network:
return False, 'Network "{}" is already configured for VM "{}".'.format(network, vm)
else:
if interface.attrib.get('type') == 'bridge':
interface_vni = re.match(r'[vm]*br([0-9a-z]+)', interface.source.attrib.get('bridge')).group(1)
if interface_vni == network:
return False, 'Network "{}" is already configured for VM "{}".'.format(network, vm)
# Add the interface at the end of the list (or, right above emulator)
if len(all_interfaces) > 0:
for idx, interface in enumerate(parsed_xml.devices.find('interface')):
if idx == len(all_interfaces) - 1:
interface.addnext(device_xml)
else:
parsed_xml.devices.find('emulator').addprevious(device_xml)
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
return vm_modify(config, vm, new_xml, restart)
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def vm_networks_remove(config, vm, network, sriov, restart):
"""
Remove a network to the VM
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
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changed = False
for interface in parsed_xml.devices.find('interface'):
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if sriov:
if interface.attrib.get('type') == 'hostdev':
if_dev = str(interface.sriov_device)
if network == if_dev:
interface.getparent().remove(interface)
changed = True
elif interface.attrib.get('type') == 'direct':
if_dev = str(interface.source.attrib.get('dev'))
if network == if_dev:
interface.getparent().remove(interface)
changed = True
else:
if_vni = re.match(r'[vm]*br([0-9a-z]+)', interface.source.attrib.get('bridge')).group(1)
if network == if_vni:
interface.getparent().remove(interface)
changed = True
if changed:
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
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return vm_modify(config, vm, new_xml, restart)
else:
return False, 'ERROR: Network "{}" does not exist on VM.'.format(network)
def vm_networks_get(config, vm):
"""
Get the networks of the VM
Calls vm_info to get VM XML.
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Returns a list of tuples of (network_vni, mac_address, model)
"""
from lxml.objectify import fromstring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
network_data = list()
for interface in parsed_xml.devices.find('interface'):
mac_address = interface.mac.attrib.get('address')
model = interface.model.attrib.get('type')
network = re.match(r'[vm]*br([0-9a-z]+)', interface.source.attrib.get('bridge')).group(1)
network_data.append((network, mac_address, model))
return True, network_data
def format_vm_networks(config, name, networks):
"""
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Format the output of a network list in a nice table
"""
output_list = []
name_length = 5
vni_length = 8
macaddr_length = 12
model_length = 6
_name_length = len(name) + 1
if _name_length > name_length:
name_length = _name_length
for network in networks:
_vni_length = len(network[0]) + 1
if _vni_length > vni_length:
vni_length = _vni_length
_macaddr_length = len(network[1]) + 1
if _macaddr_length > macaddr_length:
macaddr_length = _macaddr_length
_model_length = len(network[2]) + 1
if _model_length > model_length:
model_length = _model_length
output_list.append(
'{bold}{name: <{name_length}} \
{vni: <{vni_length}} \
{macaddr: <{macaddr_length}} \
{model: <{model_length}}{end_bold}'.format(
name_length=name_length,
vni_length=vni_length,
macaddr_length=macaddr_length,
model_length=model_length,
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
name='Name',
vni='Network',
macaddr='MAC Address',
model='Model'
)
)
count = 0
for network in networks:
if count > 0:
name = ''
count += 1
output_list.append(
'{bold}{name: <{name_length}} \
{vni: <{vni_length}} \
{macaddr: <{macaddr_length}} \
{model: <{model_length}}{end_bold}'.format(
name_length=name_length,
vni_length=vni_length,
macaddr_length=macaddr_length,
model_length=model_length,
bold='',
end_bold='',
name=name,
vni=network[0],
macaddr=network[1],
model=network[2]
)
)
return '\n'.join(output_list)
def vm_volumes_add(config, vm, volume, disk_id, bus, disk_type, restart):
"""
Add a new volume to the VM
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
from copy import deepcopy
import cli_lib.ceph as pvc_ceph
if disk_type == 'rbd':
# Verify that the provided volume is valid
vpool = volume.split('/')[0]
vname = volume.split('/')[1]
retcode, retdata = pvc_ceph.ceph_volume_info(config, vpool, vname)
if not retcode:
return False, "Volume {} is not present in the cluster.".format(volume)
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
last_disk = None
id_list = list()
all_disks = parsed_xml.devices.find('disk')
if all_disks is None:
all_disks = []
for disk in all_disks:
id_list.append(disk.target.attrib.get('dev'))
if disk.source.attrib.get('protocol') == disk_type:
if disk_type == 'rbd':
last_disk = disk.source.attrib.get('name')
elif disk_type == 'file':
last_disk = disk.source.attrib.get('file')
if last_disk == volume:
return False, 'Volume {} is already configured for VM {}.'.format(volume, vm)
last_disk_details = deepcopy(disk)
if disk_id is not None:
if disk_id in id_list:
return False, 'Manually specified disk ID {} is already in use for VM {}.'.format(disk_id, vm)
else:
# Find the next free disk ID
first_dev_prefix = id_list[0][0:-1]
for char in range(ord('a'), ord('z')):
char = chr(char)
next_id = "{}{}".format(first_dev_prefix, char)
if next_id not in id_list:
break
else:
next_id = None
if next_id is None:
return False, 'Failed to find a valid disk_id and none specified; too many disks for VM {}?'.format(vm)
disk_id = next_id
if last_disk is None:
if disk_type == 'rbd':
# RBD volumes need an example to be based on
return False, "There are no existing RBD volumes attached to this VM. Autoconfiguration failed; use the 'vm modify' command to manually configure this volume with the required details for authentication, hosts, etc.."
elif disk_type == 'file':
# File types can be added ad-hoc
disk_template = '<disk type="file" device="disk"><driver name="qemu" type="raw"/><source file="{source}"/><target dev="{dev}" bus="{bus}"/></disk>'.format(
source=volume,
dev=disk_id,
bus=bus
)
last_disk_details = fromstring(disk_template)
new_disk_details = last_disk_details
new_disk_details.target.set('dev', disk_id)
new_disk_details.target.set('bus', bus)
if disk_type == 'rbd':
new_disk_details.source.set('name', volume)
elif disk_type == 'file':
new_disk_details.source.set('file', volume)
all_disks = parsed_xml.devices.find('disk')
if all_disks is None:
all_disks = []
for disk in all_disks:
last_disk = disk
if last_disk is None:
parsed_xml.devices.find('emulator').addprevious(new_disk_details)
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
return vm_modify(config, vm, new_xml, restart)
def vm_volumes_remove(config, vm, volume, restart):
"""
Remove a volume to the VM
Calls vm_info to get the VM XML.
Calls vm_modify to set the VM XML.
"""
from lxml.objectify import fromstring
from lxml.etree import tostring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
for disk in parsed_xml.devices.find('disk'):
disk_name = disk.source.attrib.get('name')
if not disk_name:
disk_name = disk.source.attrib.get('file')
if volume == disk_name:
disk.getparent().remove(disk)
try:
new_xml = tostring(parsed_xml, pretty_print=True)
except Exception:
return False, 'ERROR: Failed to dump XML data.'
return vm_modify(config, vm, new_xml, restart)
def vm_volumes_get(config, vm):
"""
Get the volumes of the VM
Calls vm_info to get VM XML.
Returns a list of tuples of (volume, disk_id, type, bus)
"""
from lxml.objectify import fromstring
status, domain_information = vm_info(config, vm)
if not status:
return status, domain_information
xml = domain_information.get('xml', None)
if xml is None:
return False, "VM does not have a valid XML doccument."
try:
parsed_xml = fromstring(xml)
except Exception:
return False, 'ERROR: Failed to parse XML data.'
volume_data = list()
for disk in parsed_xml.devices.find('disk'):
protocol = disk.attrib.get('type')
disk_id = disk.target.attrib.get('dev')
bus = disk.target.attrib.get('bus')
if protocol == 'network':
protocol = disk.source.attrib.get('protocol')
source = disk.source.attrib.get('name')
elif protocol == 'file':
protocol = 'file'
source = disk.source.attrib.get('file')
else:
protocol = 'unknown'
source = 'unknown'
volume_data.append((source, disk_id, protocol, bus))
return True, volume_data
def format_vm_volumes(config, name, volumes):
"""
Format the output of a volume value in a nice table
"""
output_list = []
name_length = 5
volume_length = 7
disk_id_length = 4
protocol_length = 5
bus_length = 4
_name_length = len(name) + 1
if _name_length > name_length:
name_length = _name_length
for volume in volumes:
_volume_length = len(volume[0]) + 1
if _volume_length > volume_length:
volume_length = _volume_length
_disk_id_length = len(volume[1]) + 1
if _disk_id_length > disk_id_length:
disk_id_length = _disk_id_length
_protocol_length = len(volume[2]) + 1
if _protocol_length > protocol_length:
protocol_length = _protocol_length
_bus_length = len(volume[3]) + 1
if _bus_length > bus_length:
bus_length = _bus_length
output_list.append(
'{bold}{name: <{name_length}} \
{volume: <{volume_length}} \
{disk_id: <{disk_id_length}} \
{protocol: <{protocol_length}} \
{bus: <{bus_length}}{end_bold}'.format(
name_length=name_length,
volume_length=volume_length,
disk_id_length=disk_id_length,
protocol_length=protocol_length,
bus_length=bus_length,
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
name='Name',
volume='Volume',
disk_id='Dev',
protocol='Type',
bus='Bus'
)
)
count = 0
for volume in volumes:
if count > 0:
name = ''
count += 1
output_list.append(
'{bold}{name: <{name_length}} \
{volume: <{volume_length}} \
{disk_id: <{disk_id_length}} \
{protocol: <{protocol_length}} \
{bus: <{bus_length}}{end_bold}'.format(
name_length=name_length,
volume_length=volume_length,
disk_id_length=disk_id_length,
protocol_length=protocol_length,
bus_length=bus_length,
bold='',
end_bold='',
name=name,
volume=volume[0],
disk_id=volume[1],
protocol=volume[2],
bus=volume[3]
)
)
return '\n'.join(output_list)
def view_console_log(config, vm, lines=100):
"""
Return console log lines from the API (and display them in a pager in the main CLI)
API endpoint: GET /vm/{vm}/console
API arguments: lines={lines}
API schema: {"name":"{vmname}","data":"{console_log}"}
"""
params = {
'lines': lines
}
response = call_api(config, 'get', '/vm/{vm}/console'.format(vm=vm), params=params)
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if response.status_code != 200:
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return False, response.json().get('message', '')
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console_log = response.json()['data']
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# Shrink the log buffer to length lines
shrunk_log = console_log.split('\n')[-lines:]
loglines = '\n'.join(shrunk_log)
return True, loglines
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def follow_console_log(config, vm, lines=10):
"""
Return and follow console log lines from the API
API endpoint: GET /vm/{vm}/console
API arguments: lines={lines}
API schema: {"name":"{vmname}","data":"{console_log}"}
"""
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# We always grab 500 to match the follow call, but only _show_ `lines` number
params = {
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'lines': 500
}
response = call_api(config, 'get', '/vm/{vm}/console'.format(vm=vm), params=params)
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if response.status_code != 200:
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return False, response.json().get('message', '')
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# Shrink the log buffer to length lines
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console_log = response.json()['data']
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shrunk_log = console_log.split('\n')[-int(lines):]
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loglines = '\n'.join(shrunk_log)
# Print the initial data and begin following
print(loglines, end='')
while True:
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# Grab the next line set (500 is a reasonable number of lines per second; any more are skipped)
try:
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params = {
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'lines': 500
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}
response = call_api(config, 'get', '/vm/{vm}/console'.format(vm=vm), params=params)
new_console_log = response.json()['data']
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except Exception:
break
# Split the new and old log strings into constitutent lines
old_console_loglines = console_log.split('\n')
new_console_loglines = new_console_log.split('\n')
# Set the console log to the new log value for the next iteration
console_log = new_console_log
# Remove the lines from the old log until we hit the first line of the new log; this
# ensures that the old log is a string that we can remove from the new log entirely
for index, line in enumerate(old_console_loglines, start=0):
if line == new_console_loglines[0]:
del old_console_loglines[0:index]
break
# Rejoin the log lines into strings
old_console_log = '\n'.join(old_console_loglines)
new_console_log = '\n'.join(new_console_loglines)
# Remove the old lines from the new log
diff_console_log = new_console_log.replace(old_console_log, "")
# If there's a difference, print it out
if diff_console_log:
print(diff_console_log, end='')
# Wait a second
time.sleep(1)
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return True, ''
#
# Output display functions
#
def format_info(config, domain_information, long_output):
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# Format a nice output; do this line-by-line then concat the elements at the end
ainformation = []
ainformation.append('{}Virtual machine information:{}'.format(ansiprint.bold(), ansiprint.end()))
ainformation.append('')
# Basic information
ainformation.append('{}UUID:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['uuid']))
ainformation.append('{}Name:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['name']))
ainformation.append('{}Description:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['description']))
ainformation.append('{}Profile:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['profile']))
ainformation.append('{}Memory (M):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['memory']))
ainformation.append('{}vCPUs:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu']))
ainformation.append('{}Topology (S/C/T):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu_topology']))
if domain_information['vnc'].get('listen', 'None') != 'None' and domain_information['vnc'].get('port', 'None') != 'None':
ainformation.append('')
ainformation.append('{}VNC listen:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vnc']['listen']))
ainformation.append('{}VNC port:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vnc']['port']))
if long_output is True:
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# Virtualization information
ainformation.append('')
ainformation.append('{}Emulator:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['emulator']))
ainformation.append('{}Type:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['type']))
ainformation.append('{}Arch:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['arch']))
ainformation.append('{}Machine:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['machine']))
ainformation.append('{}Features:{} {}'.format(ansiprint.purple(), ansiprint.end(), ' '.join(domain_information['features'])))
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ainformation.append('')
ainformation.append('{0}Memory stats:{1} {2}Swap In Swap Out Faults (maj/min) Available Usable Unused RSS{3}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
ainformation.append(' {0: <7} {1: <8} {2: <16} {3: <10} {4: <7} {5: <7} {6: <10}'.format(
format_metric(domain_information['memory_stats'].get('swap_in', 0)),
format_metric(domain_information['memory_stats'].get('swap_out', 0)),
'/'.join([format_metric(domain_information['memory_stats'].get('major_fault', 0)), format_metric(domain_information['memory_stats'].get('minor_fault', 0))]),
format_bytes(domain_information['memory_stats'].get('available', 0) * 1024),
format_bytes(domain_information['memory_stats'].get('usable', 0) * 1024),
format_bytes(domain_information['memory_stats'].get('unused', 0) * 1024),
format_bytes(domain_information['memory_stats'].get('rss', 0) * 1024)
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))
ainformation.append('')
ainformation.append('{0}vCPU stats:{1} {2}CPU time (ns) User time (ns) System time (ns){3}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
ainformation.append(' {0: <16} {1: <16} {2: <15}'.format(
str(domain_information['vcpu_stats'].get('cpu_time', 0)),
str(domain_information['vcpu_stats'].get('user_time', 0)),
str(domain_information['vcpu_stats'].get('system_time', 0))
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))
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# PVC cluster information
ainformation.append('')
dstate_colour = {
'start': ansiprint.green(),
'restart': ansiprint.yellow(),
'shutdown': ansiprint.yellow(),
'stop': ansiprint.red(),
'disable': ansiprint.blue(),
'fail': ansiprint.red(),
'migrate': ansiprint.blue(),
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'unmigrate': ansiprint.blue(),
'provision': ansiprint.blue()
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}
ainformation.append('{}State:{} {}{}{}'.format(ansiprint.purple(), ansiprint.end(), dstate_colour[domain_information['state']], domain_information['state'], ansiprint.end()))
ainformation.append('{}Current Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['node']))
if not domain_information['last_node']:
domain_information['last_node'] = "N/A"
ainformation.append('{}Previous Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['last_node']))
# Get a failure reason if applicable
if domain_information['failed_reason']:
ainformation.append('')
ainformation.append('{}Failure reason:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['failed_reason']))
if not domain_information.get('node_selector'):
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formatted_node_selector = "False"
else:
formatted_node_selector = domain_information['node_selector']
if not domain_information.get('node_limit'):
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formatted_node_limit = "False"
else:
formatted_node_limit = ', '.join(domain_information['node_limit'])
if not domain_information.get('node_autostart'):
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formatted_node_autostart = "False"
else:
formatted_node_autostart = domain_information['node_autostart']
if not domain_information.get('migration_method'):
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formatted_migration_method = "any"
else:
formatted_migration_method = domain_information['migration_method']
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ainformation.append('{}Migration selector:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_selector))
ainformation.append('{}Node limit:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_limit))
ainformation.append('{}Autostart:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_autostart))
ainformation.append('{}Migration Method:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_migration_method))
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# Network list
net_list = []
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cluster_net_list = call_api(config, 'get', '/network').json()
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for net in domain_information['networks']:
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net_vni = net['vni']
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if net_vni not in ['cluster', 'storage', 'upstream'] and not re.match(r'^macvtap:.*', net_vni) and not re.match(r'^hostdev:.*', net_vni):
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if int(net_vni) not in [net['vni'] for net in cluster_net_list]:
net_list.append(ansiprint.red() + net_vni + ansiprint.end() + ' [invalid]')
else:
net_list.append(net_vni)
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else:
net_list.append(net_vni)
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ainformation.append('')
ainformation.append('{}Networks:{} {}'.format(ansiprint.purple(), ansiprint.end(), ', '.join(net_list)))
if long_output is True:
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# Disk list
ainformation.append('')
name_length = 0
for disk in domain_information['disks']:
_name_length = len(disk['name']) + 1
if _name_length > name_length:
name_length = _name_length
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ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus Requests (r/w) Data (r/w){4}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), 'Name', ansiprint.end(), width=name_length))
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for disk in domain_information['disks']:
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ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5} {5: <15} {6}'.format(
domain_information['disks'].index(disk),
disk['type'],
disk['name'],
disk['dev'],
disk['bus'],
'/'.join([str(format_metric(disk.get('rd_req', 0))), str(format_metric(disk.get('wr_req', 0)))]),
'/'.join([str(format_bytes(disk.get('rd_bytes', 0))), str(format_bytes(disk.get('wr_bytes', 0)))]),
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width=name_length
))
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ainformation.append('')
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ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC Data (r/w) Packets (r/w) Errors (r/w){}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
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for net in domain_information['networks']:
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net_type = net['type']
net_source = net['source']
net_mac = net['mac']
if net_type in ['direct', 'hostdev']:
net_model = 'N/A'
net_bytes = 'N/A'
net_packets = 'N/A'
net_errors = 'N/A'
elif net_type in ['bridge']:
net_model = net['model']
net_bytes = '/'.join([str(format_bytes(net.get('rd_bytes', 0))), str(format_bytes(net.get('wr_bytes', 0)))])
net_packets = '/'.join([str(format_metric(net.get('rd_packets', 0))), str(format_metric(net.get('wr_packets', 0)))])
net_errors = '/'.join([str(format_metric(net.get('rd_errors', 0))), str(format_metric(net.get('wr_errors', 0)))])
ainformation.append(' {0: <3} {1: <8} {2: <12} {3: <8} {4: <18} {5: <12} {6: <15} {7: <12}'.format(
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domain_information['networks'].index(net),
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net_type,
net_source,
net_model,
net_mac,
net_bytes,
net_packets,
net_errors
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))
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# Controller list
ainformation.append('')
ainformation.append('{}Controllers:{} {}ID Type Model{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
for controller in domain_information['controllers']:
ainformation.append(' {0: <3} {1: <14} {2: <8}'.format(domain_information['controllers'].index(controller), controller['type'], str(controller['model'])))
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# Join it all together
ainformation.append('')
return '\n'.join(ainformation)
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def format_list(config, vm_list, raw):
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# Function to strip the "br" off of nets and return a nicer list
def getNiceNetID(domain_information):
# Network list
net_list = []
for net in domain_information['networks']:
net_list.append(net['vni'])
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return net_list
# Handle raw mode since it just lists the names
if raw:
ainformation = list()
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for vm in sorted(item['name'] for item in vm_list):
ainformation.append(vm)
return '\n'.join(ainformation)
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vm_list_output = []
# Determine optimal column widths
# Dynamic columns: node_name, node, migrated
vm_name_length = 5
vm_uuid_length = 37
vm_state_length = 6
vm_nets_length = 9
vm_ram_length = 8
vm_vcpu_length = 6
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vm_node_length = 5
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vm_migrated_length = 10
for domain_information in vm_list:
net_list = getNiceNetID(domain_information)
# vm_name column
_vm_name_length = len(domain_information['name']) + 1
if _vm_name_length > vm_name_length:
vm_name_length = _vm_name_length
# vm_state column
_vm_state_length = len(domain_information['state']) + 1
if _vm_state_length > vm_state_length:
vm_state_length = _vm_state_length
# vm_nets column
_vm_nets_length = len(','.join(net_list)) + 1
if _vm_nets_length > vm_nets_length:
vm_nets_length = _vm_nets_length
# vm_node column
_vm_node_length = len(domain_information['node']) + 1
if _vm_node_length > vm_node_length:
vm_node_length = _vm_node_length
# vm_migrated column
_vm_migrated_length = len(domain_information['migrated']) + 1
if _vm_migrated_length > vm_migrated_length:
vm_migrated_length = _vm_migrated_length
# Format the string (header)
vm_list_output.append(
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
{vm_networks: <{vm_nets_length}} \
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
{vm_node: <{vm_node_length}} \
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
vm_uuid_length=vm_uuid_length,
vm_state_length=vm_state_length,
vm_nets_length=vm_nets_length,
vm_ram_length=vm_ram_length,
vm_vcpu_length=vm_vcpu_length,
vm_node_length=vm_node_length,
vm_migrated_length=vm_migrated_length,
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
vm_state_colour='',
end_colour='',
vm_name='Name',
vm_uuid='UUID',
vm_state='State',
vm_networks='Networks',
vm_memory='RAM (M)',
vm_vcpu='vCPUs',
vm_node='Node',
vm_migrated='Migrated'
)
)
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# Format the string (elements)
for domain_information in vm_list:
if domain_information['state'] == 'start':
vm_state_colour = ansiprint.green()
elif domain_information['state'] == 'restart':
vm_state_colour = ansiprint.yellow()
elif domain_information['state'] == 'shutdown':
vm_state_colour = ansiprint.yellow()
elif domain_information['state'] == 'stop':
vm_state_colour = ansiprint.red()
elif domain_information['state'] == 'fail':
vm_state_colour = ansiprint.red()
else:
vm_state_colour = ansiprint.blue()
# Handle colouring for an invalid network config
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net_list = getNiceNetID(domain_information)
cluster_net_list = call_api(config, 'get', '/network').json()
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vm_net_colour = ''
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for net_vni in net_list:
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if net_vni not in ['cluster', 'storage', 'upstream'] and not re.match(r'^macvtap:.*', net_vni) and not re.match(r'^hostdev:.*', net_vni):
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if int(net_vni) not in [net['vni'] for net in cluster_net_list]:
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vm_net_colour = ansiprint.red()
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vm_list_output.append(
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
{vm_net_colour}{vm_networks: <{vm_nets_length}}{end_colour} \
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
{vm_node: <{vm_node_length}} \
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
vm_uuid_length=vm_uuid_length,
vm_state_length=vm_state_length,
vm_nets_length=vm_nets_length,
vm_ram_length=vm_ram_length,
vm_vcpu_length=vm_vcpu_length,
vm_node_length=vm_node_length,
vm_migrated_length=vm_migrated_length,
bold='',
end_bold='',
vm_state_colour=vm_state_colour,
end_colour=ansiprint.end(),
vm_name=domain_information['name'],
vm_uuid=domain_information['uuid'],
vm_state=domain_information['state'],
vm_net_colour=vm_net_colour,
vm_networks=','.join(net_list),
vm_memory=domain_information['memory'],
vm_vcpu=domain_information['vcpu'],
vm_node=domain_information['node'],
vm_migrated=domain_information['migrated']
)
)
return '\n'.join(sorted(vm_list_output))