Refactor CLI client to split out actual functions for reuse
This commit is contained in:
parent
378fcccbe5
commit
c9258edcad
|
|
@ -0,0 +1 @@
|
||||||
|
../client-common/lib
|
||||||
1369
cli-client/pvc.py
1369
cli-client/pvc.py
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,80 @@
|
||||||
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
|
# ansiprint.py - Printing function for formatted messages
|
||||||
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||||
|
#
|
||||||
|
# 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, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# 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 datetime
|
||||||
|
|
||||||
|
# ANSII colours for output
|
||||||
|
def red():
|
||||||
|
return '\033[91m'
|
||||||
|
def blue():
|
||||||
|
return '\033[94m'
|
||||||
|
def green():
|
||||||
|
return '\033[92m'
|
||||||
|
def yellow():
|
||||||
|
return '\033[93m'
|
||||||
|
def purple():
|
||||||
|
return '\033[95m'
|
||||||
|
def bold():
|
||||||
|
return '\033[1m'
|
||||||
|
def end():
|
||||||
|
return '\033[0m'
|
||||||
|
|
||||||
|
# Print function
|
||||||
|
def echo(message, prefix, state):
|
||||||
|
# Get the date
|
||||||
|
date = '{} - '.format(datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S.%f'))
|
||||||
|
endc = end()
|
||||||
|
|
||||||
|
# Continuation
|
||||||
|
if state == 'c':
|
||||||
|
date = ''
|
||||||
|
colour = ''
|
||||||
|
prompt = ' '
|
||||||
|
# OK
|
||||||
|
elif state == 'o':
|
||||||
|
colour = green()
|
||||||
|
prompt = '>>> '
|
||||||
|
# Error
|
||||||
|
elif state == 'e':
|
||||||
|
colour = red()
|
||||||
|
prompt = '>>> '
|
||||||
|
# Warning
|
||||||
|
elif state == 'w':
|
||||||
|
colour = yellow()
|
||||||
|
prompt = '>>> '
|
||||||
|
# Tick
|
||||||
|
elif state == 't':
|
||||||
|
colour = purple()
|
||||||
|
prompt = '>>> '
|
||||||
|
# Information
|
||||||
|
elif state == 'i':
|
||||||
|
colour = blue()
|
||||||
|
prompt = '>>> '
|
||||||
|
else:
|
||||||
|
colour = bold()
|
||||||
|
prompt = '>>> '
|
||||||
|
|
||||||
|
# Append space to prefix
|
||||||
|
if prefix != '':
|
||||||
|
prefix = prefix + ' '
|
||||||
|
|
||||||
|
print(colour + prompt + endc + date + prefix + message)
|
||||||
|
|
@ -0,0 +1,254 @@
|
||||||
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
|
# common.py - PVC client function library, common fuctions
|
||||||
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||||
|
#
|
||||||
|
# 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, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# 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 uuid
|
||||||
|
import lxml
|
||||||
|
import kazoo.client
|
||||||
|
|
||||||
|
###############################################################################
|
||||||
|
# Supplemental functions
|
||||||
|
###############################################################################
|
||||||
|
|
||||||
|
#
|
||||||
|
# Validate a UUID
|
||||||
|
#
|
||||||
|
def validateUUID(dom_uuid):
|
||||||
|
try:
|
||||||
|
uuid.UUID(dom_uuid)
|
||||||
|
return True
|
||||||
|
except:
|
||||||
|
return False
|
||||||
|
|
||||||
|
|
||||||
|
#
|
||||||
|
# Connect and disconnect from Zookeeper
|
||||||
|
#
|
||||||
|
def startZKConnection(zk_host):
|
||||||
|
zk_conn = kazoo.client.KazooClient(hosts=zk_host)
|
||||||
|
zk_conn.start()
|
||||||
|
return zk_conn
|
||||||
|
|
||||||
|
def stopZKConnection(zk_conn):
|
||||||
|
zk_conn.stop()
|
||||||
|
zk_conn.close()
|
||||||
|
return 0
|
||||||
|
#
|
||||||
|
# Parse a Domain XML object
|
||||||
|
#
|
||||||
|
def getDomainXML(zk_conn, dom_uuid):
|
||||||
|
try:
|
||||||
|
xml = zk_conn.get('/domains/%s/xml' % dom_uuid)[0].decode('ascii')
|
||||||
|
except:
|
||||||
|
return None
|
||||||
|
|
||||||
|
# Parse XML using lxml.objectify
|
||||||
|
parsed_xml = lxml.objectify.fromstring(xml)
|
||||||
|
return parsed_xml
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get the main details for a VM object from XML
|
||||||
|
#
|
||||||
|
def getDomainMainDetails(parsed_xml):
|
||||||
|
# Get the information we want from it
|
||||||
|
duuid = str(parsed_xml.uuid)
|
||||||
|
try:
|
||||||
|
ddescription = str(parsed_xml.description)
|
||||||
|
except AttributeError:
|
||||||
|
ddescription = "N/A"
|
||||||
|
dname = str(parsed_xml.name)
|
||||||
|
dmemory = str(parsed_xml.memory)
|
||||||
|
dmemory_unit = str(parsed_xml.memory.attrib['unit'])
|
||||||
|
if dmemory_unit == 'KiB':
|
||||||
|
dmemory = str(int(dmemory) * 1024)
|
||||||
|
elif dmemory_unit == 'GiB':
|
||||||
|
dmemory = str(int(dmemory) / 1024)
|
||||||
|
dvcpu = str(parsed_xml.vcpu)
|
||||||
|
try:
|
||||||
|
dvcputopo = '{}/{}/{}'.format(parsed_xml.cpu.topology.attrib['sockets'], parsed_xml.cpu.topology.attrib['cores'], parsed_xml.cpu.topology.attrib['threads'])
|
||||||
|
except:
|
||||||
|
dvcputopo = 'N/A'
|
||||||
|
|
||||||
|
return duuid, dname, ddescription, dmemory, dvcpu, dvcputopo
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get long-format details
|
||||||
|
#
|
||||||
|
def getDomainExtraDetails(parsed_xml):
|
||||||
|
dtype = parsed_xml.os.type
|
||||||
|
darch = parsed_xml.os.type.attrib['arch']
|
||||||
|
dmachine = parsed_xml.os.type.attrib['machine']
|
||||||
|
dconsole = parsed_xml.devices.console.attrib['type']
|
||||||
|
demulator = parsed_xml.devices.emulator
|
||||||
|
|
||||||
|
return dtype, darch, dmachine, dconsole, demulator
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get CPU features
|
||||||
|
#
|
||||||
|
def getDomainCPUFeatures(parsed_xml):
|
||||||
|
dfeatures = []
|
||||||
|
for feature in parsed_xml.features.getchildren():
|
||||||
|
dfeatures.append(feature.tag)
|
||||||
|
|
||||||
|
return dfeatures
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get disk devices
|
||||||
|
#
|
||||||
|
def getDomainDisks(parsed_xml):
|
||||||
|
ddisks = []
|
||||||
|
for device in parsed_xml.devices.getchildren():
|
||||||
|
if device.tag == 'disk':
|
||||||
|
disk_attrib = device.source.attrib
|
||||||
|
disk_target = device.target.attrib
|
||||||
|
disk_type = device.attrib['type']
|
||||||
|
if disk_type == 'network':
|
||||||
|
disk_obj = { 'type': disk_attrib.get('protocol'), 'name': disk_attrib.get('name'), 'dev': disk_target.get('dev'), 'bus': disk_target.get('bus') }
|
||||||
|
elif disk_type == 'file':
|
||||||
|
disk_obj = { 'type': 'file', 'name': disk_attrib.get('file'), 'dev': disk_target.get('dev'), 'bus': disk_target.get('bus') }
|
||||||
|
else:
|
||||||
|
disk_obj = {}
|
||||||
|
ddisks.append(disk_obj)
|
||||||
|
|
||||||
|
return ddisks
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get network devices
|
||||||
|
#
|
||||||
|
def getDomainNetworks(parsed_xml):
|
||||||
|
dnets = []
|
||||||
|
for device in parsed_xml.devices.getchildren():
|
||||||
|
if device.tag == 'interface':
|
||||||
|
net_type = device.attrib['type']
|
||||||
|
net_mac = device.mac.attrib['address']
|
||||||
|
net_bridge = device.source.attrib[net_type]
|
||||||
|
net_model = device.model.attrib['type']
|
||||||
|
net_obj = { 'type': net_type, 'mac': net_mac, 'source': net_bridge, 'model': net_model }
|
||||||
|
dnets.append(net_obj)
|
||||||
|
|
||||||
|
return dnets
|
||||||
|
|
||||||
|
#
|
||||||
|
# Get controller devices
|
||||||
|
#
|
||||||
|
def getDomainControllers(parsed_xml):
|
||||||
|
dcontrollers = []
|
||||||
|
for device in parsed_xml.devices.getchildren():
|
||||||
|
if device.tag == 'controller':
|
||||||
|
controller_type = device.attrib['type']
|
||||||
|
try:
|
||||||
|
controller_model = device.attrib['model']
|
||||||
|
except KeyError:
|
||||||
|
controller_model = 'none'
|
||||||
|
controller_obj = { 'type': controller_type, 'model': controller_model }
|
||||||
|
dcontrollers.append(controller_obj)
|
||||||
|
|
||||||
|
return dcontrollers
|
||||||
|
|
||||||
|
#
|
||||||
|
# Verify node is valid in cluster
|
||||||
|
#
|
||||||
|
def verifyNode(zk_conn, node):
|
||||||
|
try:
|
||||||
|
zk_conn.get('/nodes/{}'.format(node))
|
||||||
|
except:
|
||||||
|
click.echo('ERROR: No node named "{}" is present in the cluster.'.format(node))
|
||||||
|
exit(1)
|
||||||
|
|
||||||
|
#
|
||||||
|
# Find a migration target
|
||||||
|
#
|
||||||
|
def findTargetHypervisor(zk_conn, search_field, dom_uuid):
|
||||||
|
if search_field == 'mem':
|
||||||
|
return findTargetHypervisorMem(zk_conn, dom_uuid)
|
||||||
|
if search_field == 'load':
|
||||||
|
return findTargetHypervisorLoad(zk_conn, dom_uuid)
|
||||||
|
if search_field == 'vcpus':
|
||||||
|
return findTargetHypervisorVCPUs(zk_conn, dom_uuid)
|
||||||
|
if search_field == 'vms':
|
||||||
|
return findTargetHypervisorVMs(zk_conn, dom_uuid)
|
||||||
|
return None
|
||||||
|
|
||||||
|
# via free memory (relative to allocated memory)
|
||||||
|
def findTargetHypervisorMem(zk_conn, dom_uuid):
|
||||||
|
most_allocfree = 0
|
||||||
|
target_hypervisor = None
|
||||||
|
|
||||||
|
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
|
||||||
|
for hypervisor in hypervisor_list:
|
||||||
|
memalloc = int(zk_conn.get('/nodes/{}/memalloc'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
memused = int(zk_conn.get('/nodes/{}/memused'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
memfree = int(zk_conn.get('/nodes/{}/memfree'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
memtotal = memused + memfree
|
||||||
|
allocfree = memtotal - memalloc
|
||||||
|
|
||||||
|
if allocfree > most_allocfree:
|
||||||
|
most_allocfree = allocfree
|
||||||
|
target_hypervisor = hypervisor
|
||||||
|
|
||||||
|
return target_hypervisor
|
||||||
|
|
||||||
|
# via load average
|
||||||
|
def findTargetHypervisorLoad(zk_conn, dom_uuid):
|
||||||
|
least_load = 9999
|
||||||
|
target_hypervisor = None
|
||||||
|
|
||||||
|
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
|
||||||
|
for hypervisor in hypervisor_list:
|
||||||
|
load = float(zk_conn.get('/nodes/{}/cpuload'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
|
||||||
|
if load < least_load:
|
||||||
|
least_load = load
|
||||||
|
target_hypervisor = hypervisor
|
||||||
|
|
||||||
|
return target_hypervisor
|
||||||
|
|
||||||
|
# via total vCPUs
|
||||||
|
def findTargetHypervisorVCPUs(zk_conn, dom_uuid):
|
||||||
|
least_vcpus = 9999
|
||||||
|
target_hypervisor = None
|
||||||
|
|
||||||
|
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
|
||||||
|
for hypervisor in hypervisor_list:
|
||||||
|
vcpus = int(zk_conn.get('/nodes/{}/vcpualloc'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
|
||||||
|
if vcpus < least_vcpus:
|
||||||
|
least_vcpus = vcpus
|
||||||
|
target_hypervisor = hypervisor
|
||||||
|
|
||||||
|
return target_hypervisor
|
||||||
|
|
||||||
|
# via total VMs
|
||||||
|
def findTargetHypervisorVMs(zk_conn, dom_uuid):
|
||||||
|
least_vms = 9999
|
||||||
|
target_hypervisor = None
|
||||||
|
|
||||||
|
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
|
||||||
|
for hypervisor in hypervisor_list:
|
||||||
|
vms = int(zk_conn.get('/nodes/{}/domainscount'.format(hypervisor))[0].decode('ascii'))
|
||||||
|
|
||||||
|
if vms < least_vms:
|
||||||
|
least_vms = vms
|
||||||
|
target_hypervisor = hypervisor
|
||||||
|
|
||||||
|
return target_hypervisor
|
||||||
|
|
||||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,315 @@
|
||||||
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
|
# node.py - PVC client function library, node management
|
||||||
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||||
|
#
|
||||||
|
# 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, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# 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 os
|
||||||
|
import socket
|
||||||
|
import time
|
||||||
|
import uuid
|
||||||
|
import re
|
||||||
|
import tempfile
|
||||||
|
import subprocess
|
||||||
|
import difflib
|
||||||
|
import colorama
|
||||||
|
import click
|
||||||
|
import lxml.objectify
|
||||||
|
import configparser
|
||||||
|
import kazoo.client
|
||||||
|
|
||||||
|
import lib.ansiiprint as ansiiprint
|
||||||
|
import lib.common as common
|
||||||
|
|
||||||
|
def getInformationFromNode(zk_conn, node_name, long_output):
|
||||||
|
node_daemon_state = zk_conn.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
|
||||||
|
node_domain_state = zk_conn.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
|
||||||
|
node_cpu_count = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[0]
|
||||||
|
node_kernel = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[1]
|
||||||
|
node_os = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[2]
|
||||||
|
node_arch = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[3]
|
||||||
|
node_mem_used = zk_conn.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
|
||||||
|
node_mem_free = zk_conn.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
|
||||||
|
node_mem_total = int(node_mem_used) + int(node_mem_free)
|
||||||
|
node_load = zk_conn.get('/nodes/{}/cpuload'.format(node_name))[0].decode('ascii')
|
||||||
|
node_domains_count = zk_conn.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
|
||||||
|
node_running_domains = zk_conn.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
|
||||||
|
node_mem_allocated = 0
|
||||||
|
for domain in node_running_domains:
|
||||||
|
try:
|
||||||
|
parsed_xml = common.getDomainXML(zk_conn, domain)
|
||||||
|
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
|
||||||
|
node_mem_allocated += int(dmemory)
|
||||||
|
except AttributeError:
|
||||||
|
click.echo('Error: Domain {} does not exist.'.format(domain))
|
||||||
|
|
||||||
|
if node_daemon_state == 'run':
|
||||||
|
daemon_state_colour = ansiiprint.green()
|
||||||
|
elif node_daemon_state == 'stop':
|
||||||
|
daemon_state_colour = ansiiprint.red()
|
||||||
|
elif node_daemon_state == 'init':
|
||||||
|
daemon_state_colour = ansiiprint.yellow()
|
||||||
|
elif node_daemon_state == 'dead':
|
||||||
|
daemon_state_colour = ansiiprint.red() + ansiiprint.bold()
|
||||||
|
else:
|
||||||
|
daemon_state_colour = ansiiprint.blue()
|
||||||
|
|
||||||
|
if node_domain_state == 'ready':
|
||||||
|
domain_state_colour = ansiiprint.green()
|
||||||
|
else:
|
||||||
|
domain_state_colour = ansiiprint.blue()
|
||||||
|
|
||||||
|
# Format a nice output; do this line-by-line then concat the elements at the end
|
||||||
|
ainformation = []
|
||||||
|
ainformation.append('{}Hypervisor Node information:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
||||||
|
ainformation.append('')
|
||||||
|
# Basic information
|
||||||
|
ainformation.append('{}Name:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_name))
|
||||||
|
ainformation.append('{}Daemon State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), daemon_state_colour, node_daemon_state, ansiiprint.end()))
|
||||||
|
ainformation.append('{}Domain State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), domain_state_colour, node_domain_state, ansiiprint.end()))
|
||||||
|
ainformation.append('{}Active VM Count:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_domains_count))
|
||||||
|
if long_output == True:
|
||||||
|
ainformation.append('')
|
||||||
|
ainformation.append('{}Architecture:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_arch))
|
||||||
|
ainformation.append('{}Operating System:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_os))
|
||||||
|
ainformation.append('{}Kernel Version:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_kernel))
|
||||||
|
ainformation.append('')
|
||||||
|
ainformation.append('{}CPUs:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_cpu_count))
|
||||||
|
ainformation.append('{}Load:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_load))
|
||||||
|
ainformation.append('{}Total RAM (MiB):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_mem_total))
|
||||||
|
ainformation.append('{}Used RAM (MiB):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_mem_used))
|
||||||
|
ainformation.append('{}Free RAM (MiB):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_mem_free))
|
||||||
|
ainformation.append('{}Allocated RAM (MiB):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_mem_allocated))
|
||||||
|
|
||||||
|
# Join it all together
|
||||||
|
information = '\n'.join(ainformation)
|
||||||
|
return information
|
||||||
|
|
||||||
|
# Get the list of valid target hypervisors
|
||||||
|
def getHypervisors(zk_conn, dom_uuid):
|
||||||
|
valid_hypervisor_list = []
|
||||||
|
full_hypervisor_list = zk_conn.get_children('/nodes')
|
||||||
|
|
||||||
|
try:
|
||||||
|
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
except:
|
||||||
|
current_hypervisor = None
|
||||||
|
|
||||||
|
for hypervisor in full_hypervisor_list:
|
||||||
|
daemon_state = zk_conn.get('/nodes/{}/daemonstate'.format(hypervisor))[0].decode('ascii')
|
||||||
|
domain_state = zk_conn.get('/nodes/{}/domainstate'.format(hypervisor))[0].decode('ascii')
|
||||||
|
|
||||||
|
if hypervisor == current_hypervisor:
|
||||||
|
continue
|
||||||
|
|
||||||
|
if daemon_state != 'run' or domain_state != 'ready':
|
||||||
|
continue
|
||||||
|
|
||||||
|
valid_hypervisor_list.append(hypervisor)
|
||||||
|
|
||||||
|
return valid_hypervisor_list
|
||||||
|
|
||||||
|
#
|
||||||
|
# Direct Functions
|
||||||
|
#
|
||||||
|
def flush_node(zk_conn, node, wait):
|
||||||
|
# Verify node is valid
|
||||||
|
verifyNode(zk_conn, node)
|
||||||
|
|
||||||
|
click.echo('Flushing hypervisor {} of running VMs.'.format(node))
|
||||||
|
|
||||||
|
# Add the new domain to Zookeeper
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/nodes/{}/domainstate'.format(node), 'flush'.encode('ascii'))
|
||||||
|
results = transaction.commit()
|
||||||
|
|
||||||
|
if wait == True:
|
||||||
|
while True:
|
||||||
|
time.sleep(1)
|
||||||
|
node_state = zk_conn.get('/nodes/{}/domainstate'.format(node))[0].decode('ascii')
|
||||||
|
if node_state == "flushed":
|
||||||
|
break
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def ready_node(zk_conn, node):
|
||||||
|
# Verify node is valid
|
||||||
|
verifyNode(zk_conn, node)
|
||||||
|
|
||||||
|
click.echo('Restoring hypervisor {} to active service.'.format(node))
|
||||||
|
|
||||||
|
# Add the new domain to Zookeeper
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/nodes/{}/domainstate'.format(node), 'unflush'.encode('ascii'))
|
||||||
|
results = transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def get_info(zk_conn, node, long_output):
|
||||||
|
# Verify node is valid
|
||||||
|
verifyNode(zk_conn, node)
|
||||||
|
|
||||||
|
# Get information about node in a pretty format
|
||||||
|
information = getInformationFromNode(zk_conn, node, long_output)
|
||||||
|
|
||||||
|
if information == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find a node matching that name.'
|
||||||
|
|
||||||
|
click.echo(information)
|
||||||
|
|
||||||
|
if long_output == True:
|
||||||
|
click.echo('')
|
||||||
|
click.echo('{}Virtual machines on node:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
||||||
|
# List all VMs on this node
|
||||||
|
common.get_list(zk_conn, node, None)
|
||||||
|
|
||||||
|
click.echo('')
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def get_list(zk_conn, limit):
|
||||||
|
# Match our limit
|
||||||
|
node_list = []
|
||||||
|
full_node_list = zk_conn.get_children('/nodes')
|
||||||
|
for node in full_node_list:
|
||||||
|
if limit != None:
|
||||||
|
try:
|
||||||
|
if re.match(limit, node) == None:
|
||||||
|
continue
|
||||||
|
except Exception as e:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'Regex Error: {}'.format(e)
|
||||||
|
node_list.append(node)
|
||||||
|
|
||||||
|
node_list_output = []
|
||||||
|
node_daemon_state = {}
|
||||||
|
node_daemon_state = {}
|
||||||
|
node_domain_state = {}
|
||||||
|
node_cpu_count = {}
|
||||||
|
node_mem_used = {}
|
||||||
|
node_mem_free = {}
|
||||||
|
node_mem_total = {}
|
||||||
|
node_domains_count = {}
|
||||||
|
node_running_domains = {}
|
||||||
|
node_mem_allocated = {}
|
||||||
|
node_load = {}
|
||||||
|
|
||||||
|
# Gather information for printing
|
||||||
|
for node_name in node_list:
|
||||||
|
node_daemon_state[node_name] = zk_conn.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
|
||||||
|
node_domain_state[node_name] = zk_conn.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
|
||||||
|
node_cpu_count[node_name] = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[0]
|
||||||
|
node_mem_used[node_name] = zk_conn.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
|
||||||
|
node_mem_free[node_name] = zk_conn.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
|
||||||
|
node_mem_total[node_name] = int(node_mem_used[node_name]) + int(node_mem_free[node_name])
|
||||||
|
node_load[node_name] = zk_conn.get('/nodes/{}/cpuload'.format(node_name))[0].decode('ascii')
|
||||||
|
node_domains_count[node_name] = zk_conn.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
|
||||||
|
node_running_domains[node_name] = zk_conn.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
|
||||||
|
node_mem_allocated[node_name] = 0
|
||||||
|
for domain in node_running_domains[node_name]:
|
||||||
|
try:
|
||||||
|
parsed_xml = common.getDomainXML(zk_conn, domain)
|
||||||
|
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
|
||||||
|
node_mem_allocated[node_name] += int(dmemory)
|
||||||
|
except AttributeError:
|
||||||
|
click.echo('Error: Domain {} does not exist.'.format(domain))
|
||||||
|
|
||||||
|
# Determine optimal column widths
|
||||||
|
# Dynamic columns: node_name, hypervisor, migrated
|
||||||
|
node_name_length = 0
|
||||||
|
for node_name in node_list:
|
||||||
|
# node_name column
|
||||||
|
_node_name_length = len(node_name) + 1
|
||||||
|
if _node_name_length > node_name_length:
|
||||||
|
node_name_length = _node_name_length
|
||||||
|
|
||||||
|
# Format the string (header)
|
||||||
|
node_list_output.append(
|
||||||
|
'{bold}{node_name: <{node_name_length}} \
|
||||||
|
State: {daemon_state_colour}{node_daemon_state: <7}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
|
||||||
|
Resources: {node_domains_count: <4} {node_cpu_count: <5} {node_load: <6} \
|
||||||
|
RAM (MiB): {node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
|
||||||
|
node_name_length=node_name_length,
|
||||||
|
bold=ansiiprint.bold(),
|
||||||
|
end_bold=ansiiprint.end(),
|
||||||
|
daemon_state_colour='',
|
||||||
|
domain_state_colour='',
|
||||||
|
end_colour='',
|
||||||
|
node_name='Name',
|
||||||
|
node_daemon_state='Daemon',
|
||||||
|
node_domain_state='Domains',
|
||||||
|
node_domains_count='VMs',
|
||||||
|
node_cpu_count='CPUs',
|
||||||
|
node_load='Load',
|
||||||
|
node_mem_total='Total',
|
||||||
|
node_mem_used='Used',
|
||||||
|
node_mem_free='Free',
|
||||||
|
node_mem_allocated='VMs',
|
||||||
|
)
|
||||||
|
)
|
||||||
|
|
||||||
|
# Format the string (elements)
|
||||||
|
for node_name in node_list:
|
||||||
|
if node_daemon_state[node_name] == 'run':
|
||||||
|
daemon_state_colour = ansiiprint.green()
|
||||||
|
elif node_daemon_state[node_name] == 'stop':
|
||||||
|
daemon_state_colour = ansiiprint.red()
|
||||||
|
elif node_daemon_state[node_name] == 'init':
|
||||||
|
daemon_state_colour = ansiiprint.yellow()
|
||||||
|
elif node_daemon_state[node_name] == 'dead':
|
||||||
|
daemon_state_colour = ansiiprint.red() + ansiiprint.bold()
|
||||||
|
else:
|
||||||
|
daemon_state_colour = ansiiprint.blue()
|
||||||
|
|
||||||
|
if node_mem_allocated[node_name] >= node_mem_total[node_name]:
|
||||||
|
node_domain_state[node_name] = 'overprov'
|
||||||
|
domain_state_colour = ansiiprint.yellow()
|
||||||
|
elif node_domain_state[node_name] == 'ready':
|
||||||
|
domain_state_colour = ansiiprint.green()
|
||||||
|
else:
|
||||||
|
domain_state_colour = ansiiprint.blue()
|
||||||
|
|
||||||
|
node_list_output.append(
|
||||||
|
'{bold}{node_name: <{node_name_length}} \
|
||||||
|
{daemon_state_colour}{node_daemon_state: <7}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
|
||||||
|
{node_domains_count: <4} {node_cpu_count: <5} {node_load: <6} \
|
||||||
|
{node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
|
||||||
|
node_name_length=node_name_length,
|
||||||
|
bold='',
|
||||||
|
end_bold='',
|
||||||
|
daemon_state_colour=daemon_state_colour,
|
||||||
|
domain_state_colour=domain_state_colour,
|
||||||
|
end_colour=ansiiprint.end(),
|
||||||
|
node_name=node_name,
|
||||||
|
node_daemon_state=node_daemon_state[node_name],
|
||||||
|
node_domain_state=node_domain_state[node_name],
|
||||||
|
node_domains_count=node_domains_count[node_name],
|
||||||
|
node_cpu_count=node_cpu_count[node_name],
|
||||||
|
node_load=node_load[node_name],
|
||||||
|
node_mem_total=node_mem_total[node_name],
|
||||||
|
node_mem_used=node_mem_used[node_name],
|
||||||
|
node_mem_free=node_mem_free[node_name],
|
||||||
|
node_mem_allocated=node_mem_allocated[node_name]
|
||||||
|
)
|
||||||
|
)
|
||||||
|
|
||||||
|
click.echo('\n'.join(sorted(node_list_output)))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
@ -0,0 +1,607 @@
|
||||||
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
|
# vm.py - PVC client function library, VM fuctions
|
||||||
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||||
|
#
|
||||||
|
# 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, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# 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 os
|
||||||
|
import socket
|
||||||
|
import time
|
||||||
|
import uuid
|
||||||
|
import re
|
||||||
|
import tempfile
|
||||||
|
import subprocess
|
||||||
|
import difflib
|
||||||
|
import colorama
|
||||||
|
import click
|
||||||
|
import lxml.objectify
|
||||||
|
import configparser
|
||||||
|
import kazoo.client
|
||||||
|
|
||||||
|
import lib.ansiiprint as ansiiprint
|
||||||
|
import lib.common as common
|
||||||
|
|
||||||
|
#
|
||||||
|
# XML information parsing functions
|
||||||
|
#
|
||||||
|
def getInformationFromXML(zk_conn, uuid, long_output):
|
||||||
|
# Obtain the contents of the XML from Zookeeper
|
||||||
|
try:
|
||||||
|
dstate = zk_conn.get('/domains/{}/state'.format(uuid))[0].decode('ascii')
|
||||||
|
dhypervisor = zk_conn.get('/domains/{}/hypervisor'.format(uuid))[0].decode('ascii')
|
||||||
|
dlasthypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(uuid))[0].decode('ascii')
|
||||||
|
except:
|
||||||
|
return None
|
||||||
|
|
||||||
|
if dlasthypervisor == '':
|
||||||
|
dlasthypervisor = 'N/A'
|
||||||
|
|
||||||
|
try:
|
||||||
|
parsed_xml = common.getDomainXML(zk_conn, uuid)
|
||||||
|
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
|
||||||
|
except AttributeError:
|
||||||
|
click.echo('Error: Domain {} does not exist.'.format(domain))
|
||||||
|
|
||||||
|
if long_output == True:
|
||||||
|
dtype, darch, dmachine, dconsole, demulator = common.getDomainExtraDetails(parsed_xml)
|
||||||
|
dfeatures = common.getDomainCPUFeatures(parsed_xml)
|
||||||
|
ddisks = common.getDomainDisks(parsed_xml)
|
||||||
|
dnets = common.getDomainNetworks(parsed_xml)
|
||||||
|
dcontrollers = common.getDomainControllers(parsed_xml)
|
||||||
|
|
||||||
|
# Format a nice output; do this line-by-line then concat the elements at the end
|
||||||
|
ainformation = []
|
||||||
|
ainformation.append('{}Virtual machine information:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
||||||
|
ainformation.append('')
|
||||||
|
# Basic information
|
||||||
|
ainformation.append('{}UUID:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), duuid))
|
||||||
|
ainformation.append('{}Name:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dname))
|
||||||
|
ainformation.append('{}Description:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), ddescription))
|
||||||
|
ainformation.append('{}Memory (MiB):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dmemory))
|
||||||
|
ainformation.append('{}vCPUs:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dvcpu))
|
||||||
|
ainformation.append('{}Topology (S/C/T):{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dvcputopo))
|
||||||
|
|
||||||
|
if long_output == True:
|
||||||
|
# Virtualization information
|
||||||
|
ainformation.append('')
|
||||||
|
ainformation.append('{}Emulator:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), demulator))
|
||||||
|
ainformation.append('{}Type:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dtype))
|
||||||
|
ainformation.append('{}Arch:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), darch))
|
||||||
|
ainformation.append('{}Machine:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dmachine))
|
||||||
|
ainformation.append('{}Features:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), ' '.join(dfeatures)))
|
||||||
|
|
||||||
|
# PVC cluster information
|
||||||
|
ainformation.append('')
|
||||||
|
dstate_colour = {
|
||||||
|
'start': ansiiprint.green(),
|
||||||
|
'restart': ansiiprint.yellow(),
|
||||||
|
'shutdown': ansiiprint.yellow(),
|
||||||
|
'stop': ansiiprint.red(),
|
||||||
|
'failed': ansiiprint.red(),
|
||||||
|
'migrate': ansiiprint.blue(),
|
||||||
|
'unmigrate': ansiiprint.blue()
|
||||||
|
}
|
||||||
|
ainformation.append('{}State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), dstate_colour[dstate], dstate, ansiiprint.end()))
|
||||||
|
ainformation.append('{}Active Hypervisor:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dhypervisor))
|
||||||
|
ainformation.append('{}Last Hypervisor:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dlasthypervisor))
|
||||||
|
|
||||||
|
if long_output == True:
|
||||||
|
# Disk list
|
||||||
|
ainformation.append('')
|
||||||
|
name_length = 0
|
||||||
|
for disk in ddisks:
|
||||||
|
_name_length = len(disk['name']) + 1
|
||||||
|
if _name_length > name_length:
|
||||||
|
name_length = _name_length
|
||||||
|
ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus{4}'.format(ansiiprint.purple(), ansiiprint.end(), ansiiprint.bold(), 'Name', ansiiprint.end(), width=name_length))
|
||||||
|
for disk in ddisks:
|
||||||
|
ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5}'.format(ddisks.index(disk), disk['type'], disk['name'], disk['dev'], disk['bus'], width=name_length))
|
||||||
|
# Network list
|
||||||
|
ainformation.append('')
|
||||||
|
ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC{}'.format(ansiiprint.purple(), ansiiprint.end(), ansiiprint.bold(), ansiiprint.end()))
|
||||||
|
for net in dnets:
|
||||||
|
ainformation.append(' {0: <3} {1: <8} {2: <10} {3: <8} {4}'.format(dnets.index(net), net['type'], net['source'], net['model'], net['mac']))
|
||||||
|
# Controller list
|
||||||
|
ainformation.append('')
|
||||||
|
ainformation.append('{}Controllers:{} {}ID Type Model{}'.format(ansiiprint.purple(), ansiiprint.end(), ansiiprint.bold(), ansiiprint.end()))
|
||||||
|
for controller in dcontrollers:
|
||||||
|
ainformation.append(' {0: <3} {1: <14} {2: <8}'.format(dcontrollers.index(controller), controller['type'], controller['model']))
|
||||||
|
|
||||||
|
# Join it all together
|
||||||
|
information = '\n'.join(ainformation)
|
||||||
|
return information
|
||||||
|
|
||||||
|
|
||||||
|
#
|
||||||
|
# Cluster search functions
|
||||||
|
#
|
||||||
|
def getClusterDomainList(zk_conn):
|
||||||
|
# Get a list of UUIDs by listing the children of /domains
|
||||||
|
uuid_list = zk_conn.get_children('/domains')
|
||||||
|
name_list = []
|
||||||
|
# For each UUID, get the corresponding name from the data
|
||||||
|
for uuid in uuid_list:
|
||||||
|
name_list.append(zk_conn.get('/domains/%s' % uuid)[0].decode('ascii'))
|
||||||
|
return uuid_list, name_list
|
||||||
|
|
||||||
|
def searchClusterByUUID(zk_conn, uuid):
|
||||||
|
try:
|
||||||
|
# Get the lists
|
||||||
|
uuid_list, name_list = getClusterDomainList(zk_conn)
|
||||||
|
# We're looking for UUID, so find that element ID
|
||||||
|
index = uuid_list.index(uuid)
|
||||||
|
# Get the name_list element at that index
|
||||||
|
name = name_list[index]
|
||||||
|
except ValueError:
|
||||||
|
# We didn't find anything
|
||||||
|
return None
|
||||||
|
|
||||||
|
return name
|
||||||
|
|
||||||
|
def searchClusterByName(zk_conn, name):
|
||||||
|
try:
|
||||||
|
# Get the lists
|
||||||
|
uuid_list, name_list = getClusterDomainList(zk_conn)
|
||||||
|
# We're looking for name, so find that element ID
|
||||||
|
index = name_list.index(name)
|
||||||
|
# Get the uuid_list element at that index
|
||||||
|
uuid = uuid_list[index]
|
||||||
|
except ValueError:
|
||||||
|
# We didn't find anything
|
||||||
|
return None
|
||||||
|
|
||||||
|
return uuid
|
||||||
|
|
||||||
|
def getDomainUUID(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
if common.validateUUID(domain):
|
||||||
|
dom_name = searchClusterByUUID(zk_conn, domain)
|
||||||
|
dom_uuid = searchClusterByName(zk_conn, dom_name)
|
||||||
|
else:
|
||||||
|
dom_uuid = searchClusterByName(zk_conn, domain)
|
||||||
|
dom_name = searchClusterByUUID(zk_conn, dom_uuid)
|
||||||
|
|
||||||
|
return dom_uuid
|
||||||
|
|
||||||
|
#
|
||||||
|
# Direct functions
|
||||||
|
#
|
||||||
|
def define_vm(zk_conn, config_data, target_hypervisor, selector):
|
||||||
|
# Parse the XML data
|
||||||
|
parsed_xml = lxml.objectify.fromstring(data)
|
||||||
|
dom_uuid = parsed_xml.uuid.text
|
||||||
|
dom_name = parsed_xml.name.text
|
||||||
|
click.echo('Adding new VM with Name "{}" and UUID "{}" to database.'.format(dom_name, dom_uuid))
|
||||||
|
|
||||||
|
if target_hypervisor == None:
|
||||||
|
target_hypervisor = common.findTargetHypervisor(zk_conn, selector, dom_uuid)
|
||||||
|
|
||||||
|
# Verify node is valid
|
||||||
|
common.verifyNode(zk_conn, target_hypervisor)
|
||||||
|
|
||||||
|
# Add the new domain to Zookeeper
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.create('/domains/{}'.format(dom_uuid), dom_name.encode('ascii'))
|
||||||
|
transaction.create('/domains/{}/state'.format(dom_uuid), 'stop'.encode('ascii'))
|
||||||
|
transaction.create('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
|
||||||
|
transaction.create('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
|
||||||
|
transaction.create('/domains/{}/failedreason'.format(dom_uuid), ''.encode('ascii'))
|
||||||
|
transaction.create('/domains/{}/xml'.format(dom_uuid), data.encode('ascii'))
|
||||||
|
results = transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def modify_vm(zk_conn, domain, restart):
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Add the modified config to Zookeeper
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}'.format(dom_uuid), dom_name.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/xml'.format(dom_uuid), new_vm_config.encode('ascii'))
|
||||||
|
if restart == True:
|
||||||
|
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'restart'.encode('ascii'))
|
||||||
|
results = transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def undefine_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Shut down the VM
|
||||||
|
try:
|
||||||
|
current_vm_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_vm_state != 'stop':
|
||||||
|
click.echo('Forcibly stopping VM "{}".'.format(dom_uuid))
|
||||||
|
# Set the domain into stop mode
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'stop'.encode('ascii'))
|
||||||
|
transaction.commit()
|
||||||
|
|
||||||
|
# Wait for 3 seconds to allow state to flow to all hypervisors
|
||||||
|
click.echo('Waiting for cluster to update.')
|
||||||
|
time.sleep(1)
|
||||||
|
except:
|
||||||
|
pass
|
||||||
|
|
||||||
|
# Gracefully terminate the class instances
|
||||||
|
try:
|
||||||
|
click.echo('Deleting VM "{}" from nodes.'.format(dom_uuid))
|
||||||
|
zk_conn.set('/domains/{}/state'.format(dom_uuid), 'delete'.encode('ascii'))
|
||||||
|
time.sleep(5)
|
||||||
|
except:
|
||||||
|
pass
|
||||||
|
|
||||||
|
# Delete the configurations
|
||||||
|
try:
|
||||||
|
click.echo('Undefining VM "{}".'.format(dom_uuid))
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.delete('/domains/{}/state'.format(dom_uuid))
|
||||||
|
transaction.delete('/domains/{}/hypervisor'.format(dom_uuid))
|
||||||
|
transaction.delete('/domains/{}/lasthypervisor'.format(dom_uuid))
|
||||||
|
transaction.delete('/domains/{}/failedreason'.format(dom_uuid))
|
||||||
|
transaction.delete('/domains/{}/xml'.format(dom_uuid))
|
||||||
|
transaction.delete('/domains/{}'.format(dom_uuid))
|
||||||
|
transaction.commit()
|
||||||
|
except:
|
||||||
|
pass
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def start_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Set the VM to start
|
||||||
|
click.echo('Starting VM "{}".'.format(dom_uuid))
|
||||||
|
zk_conn.set('/domains/%s/state' % dom_uuid, 'start'.encode('ascii'))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def restart_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Get state and verify we're OK to proceed
|
||||||
|
current_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_state != 'start':
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" is not in "start" state!'.format(dom_uuid)
|
||||||
|
|
||||||
|
# Set the VM to start
|
||||||
|
click.echo('Restarting VM "{}".'.format(dom_uuid))
|
||||||
|
zk_conn.set('/domains/%s/state' % dom_uuid, 'restart'.encode('ascii'))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def shutdown_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Get state and verify we're OK to proceed
|
||||||
|
current_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_state != 'start':
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" is not in "start" state!'.format(dom_uuid)
|
||||||
|
|
||||||
|
# Set the VM to shutdown
|
||||||
|
click.echo('Shutting down VM "{}".'.format(dom_uuid))
|
||||||
|
zk_conn.set('/domains/%s/state' % dom_uuid, 'shutdown'.encode('ascii'))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def stop_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Get state and verify we're OK to proceed
|
||||||
|
current_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_state != 'start':
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" is not in "start" state!'.format(dom_uuid)
|
||||||
|
|
||||||
|
# Set the VM to start
|
||||||
|
click.echo('Forcibly stopping VM "{}".'.format(dom_uuid))
|
||||||
|
zk_conn.set('/domains/%s/state' % dom_uuid, 'stop'.encode('ascii'))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def move_vm(zk_conn, domain, target_hypervisor, selector):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
|
||||||
|
if target_hypervisor == None:
|
||||||
|
target_hypervisor = common.findTargetHypervisor(zk_conn, selector, dom_uuid)
|
||||||
|
else:
|
||||||
|
if target_hypervisor == current_hypervisor:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" is already running on hypervisor "{}".'.format(dom_uuid, current_hypervisor)
|
||||||
|
|
||||||
|
# Verify node is valid
|
||||||
|
common.verifyNode(zk_conn, target_hypervisor)
|
||||||
|
|
||||||
|
current_vm_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_vm_state == 'start':
|
||||||
|
click.echo('Permanently migrating VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'migrate'.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
|
||||||
|
transaction.commit()
|
||||||
|
else:
|
||||||
|
click.echo('Permanently moving VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
|
||||||
|
transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def migrate_vm(zk_conn, domain, target_hypervisor, selector, force_migrate):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Get state and verify we're OK to proceed
|
||||||
|
current_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_state != 'start':
|
||||||
|
target_state = 'start'
|
||||||
|
else:
|
||||||
|
target_state = 'migrate'
|
||||||
|
|
||||||
|
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
last_hypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
|
||||||
|
if last_hypervisor != '' and force_migrate != True:
|
||||||
|
click.echo('ERROR: VM "{}" has been previously migrated.'.format(dom_uuid))
|
||||||
|
click.echo('> Last hypervisor: {}'.format(last_hypervisor))
|
||||||
|
click.echo('> Current hypervisor: {}'.format(current_hypervisor))
|
||||||
|
click.echo('Run `vm unmigrate` to restore the VM to its previous hypervisor, or use `--force` to override this check.')
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, ''
|
||||||
|
|
||||||
|
if target_hypervisor == None:
|
||||||
|
target_hypervisor = findTargetHypervisor(zk_conn, selector, dom_uuid)
|
||||||
|
else:
|
||||||
|
if target_hypervisor == current_hypervisor:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" is already running on hypervisor "{}".'.format(dom_uuid, current_hypervisor)
|
||||||
|
|
||||||
|
# Verify node is valid
|
||||||
|
common.verifyNode(zk_conn, target_hypervisor)
|
||||||
|
|
||||||
|
click.echo('Migrating VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}/state'.format(dom_uuid), target_state.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), current_hypervisor.encode('ascii'))
|
||||||
|
transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def unmigrate_vm(zk_conn, domain):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Get state and verify we're OK to proceed
|
||||||
|
current_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if current_state != 'start':
|
||||||
|
target_state = 'start'
|
||||||
|
else:
|
||||||
|
target_state = 'migrate'
|
||||||
|
|
||||||
|
target_hypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
|
||||||
|
if target_hypervisor == '':
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: VM "{}" has not been previously migrated.'.format(dom_uuid)
|
||||||
|
|
||||||
|
click.echo('Unmigrating VM "{}" back to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
|
||||||
|
transaction = zk_conn.transaction()
|
||||||
|
transaction.set_data('/domains/{}/state'.format(dom_uuid), target_state.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
|
||||||
|
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
|
||||||
|
transaction.commit()
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def get_info(zk_conn, domain, long_output):
|
||||||
|
# Validate and obtain alternate passed value
|
||||||
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||||
|
if dom_uuid == None:
|
||||||
|
common.stopZKConnection(zk_conn)
|
||||||
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||||
|
|
||||||
|
# Gather information from XML config and print it
|
||||||
|
information = getInformationFromXML(zk_conn, dom_uuid, long_output)
|
||||||
|
click.echo(information)
|
||||||
|
|
||||||
|
# Get a failure reason if applicable
|
||||||
|
failedreason = zk_conn.get('/domains/{}/failedreason'.format(dom_uuid))[0].decode('ascii')
|
||||||
|
if failedreason != '':
|
||||||
|
click.echo('')
|
||||||
|
click.echo('{}Failure reason:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), failedreason))
|
||||||
|
|
||||||
|
click.echo('')
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
||||||
|
def get_list(zk_conn, hypervisor, limit):
|
||||||
|
if hypervisor != None:
|
||||||
|
# Verify node is valid
|
||||||
|
common.verifyNode(zk_conn, hypervisor)
|
||||||
|
|
||||||
|
vm_list_raw = zk_conn.get_children('/domains')
|
||||||
|
vm_list = []
|
||||||
|
vm_list_output = []
|
||||||
|
|
||||||
|
vm_hypervisor = {}
|
||||||
|
vm_state = {}
|
||||||
|
vm_migrated = {}
|
||||||
|
vm_uuid = {}
|
||||||
|
vm_name = {}
|
||||||
|
vm_description = {}
|
||||||
|
vm_memory = {}
|
||||||
|
vm_vcpu = {}
|
||||||
|
|
||||||
|
# If we're limited, remove other nodes' VMs
|
||||||
|
for vm in vm_list_raw:
|
||||||
|
# Check we don't match the limit
|
||||||
|
name = zk_conn.get('/domains/{}'.format(vm))[0].decode('ascii')
|
||||||
|
if limit != None:
|
||||||
|
try:
|
||||||
|
if re.match(limit, name) == None:
|
||||||
|
continue
|
||||||
|
except Exception as e:
|
||||||
|
click.echo('Regex Error: {}'.format(e))
|
||||||
|
exit(1)
|
||||||
|
# Check hypervisor to avoid unneeded ZK calls
|
||||||
|
vm_hypervisor[vm] = zk_conn.get('/domains/{}/hypervisor'.format(vm))[0].decode('ascii')
|
||||||
|
if hypervisor == None:
|
||||||
|
vm_list.append(vm)
|
||||||
|
else:
|
||||||
|
if vm_hypervisor[vm] == hypervisor:
|
||||||
|
vm_list.append(vm)
|
||||||
|
|
||||||
|
# Gather information for printing
|
||||||
|
for vm in vm_list:
|
||||||
|
vm_state[vm] = zk_conn.get('/domains/{}/state'.format(vm))[0].decode('ascii')
|
||||||
|
vm_lasthypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(vm))[0].decode('ascii')
|
||||||
|
if vm_lasthypervisor != '':
|
||||||
|
vm_migrated[vm] = 'from {}'.format(vm_lasthypervisor)
|
||||||
|
else:
|
||||||
|
vm_migrated[vm] = 'no'
|
||||||
|
|
||||||
|
try:
|
||||||
|
vm_xml = common.getDomainXML(zk_conn, vm)
|
||||||
|
vm_uuid[vm], vm_name[vm], vm_description[vm], vm_memory[vm], vm_vcpu[vm], vm_vcputopo = common.getDomainMainDetails(vm_xml)
|
||||||
|
except AttributeError:
|
||||||
|
click.echo('Error: Domain {} does not exist.'.format(domain))
|
||||||
|
|
||||||
|
# Determine optimal column widths
|
||||||
|
# Dynamic columns: node_name, hypervisor, migrated
|
||||||
|
vm_name_length = 0
|
||||||
|
vm_hypervisor_length = 0
|
||||||
|
vm_migrated_length = 0
|
||||||
|
for vm in vm_list:
|
||||||
|
# vm_name column
|
||||||
|
_vm_name_length = len(vm_name[vm]) + 1
|
||||||
|
if _vm_name_length > vm_name_length:
|
||||||
|
vm_name_length = _vm_name_length
|
||||||
|
# vm_hypervisor column
|
||||||
|
_vm_hypervisor_length = len(vm_hypervisor[vm]) + 1
|
||||||
|
if _vm_hypervisor_length > vm_hypervisor_length:
|
||||||
|
vm_hypervisor_length = _vm_hypervisor_length
|
||||||
|
# vm_migrated column
|
||||||
|
_vm_migrated_length = len(vm_migrated[vm]) + 1
|
||||||
|
if _vm_migrated_length > vm_migrated_length:
|
||||||
|
vm_migrated_length = _vm_migrated_length
|
||||||
|
|
||||||
|
# Format the string (header)
|
||||||
|
vm_list_header = ansiiprint.bold() + 'Name UUID State RAM [MiB] vCPUs Hypervisor Migrated?' + ansiiprint.end()
|
||||||
|
vm_list_output.append(
|
||||||
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
|
||||||
|
{vm_state_colour}{vm_state: <8}{end_colour} \
|
||||||
|
{vm_memory: <10} {vm_vcpu: <6} \
|
||||||
|
{vm_hypervisor: <{vm_hypervisor_length}} \
|
||||||
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
||||||
|
vm_name_length=vm_name_length,
|
||||||
|
vm_hypervisor_length=vm_hypervisor_length,
|
||||||
|
vm_migrated_length=vm_migrated_length,
|
||||||
|
bold=ansiiprint.bold(),
|
||||||
|
end_bold=ansiiprint.end(),
|
||||||
|
vm_state_colour='',
|
||||||
|
end_colour='',
|
||||||
|
vm_name='Name',
|
||||||
|
vm_uuid='UUID',
|
||||||
|
vm_state='State',
|
||||||
|
vm_memory='RAM (MiB)',
|
||||||
|
vm_vcpu='vCPUs',
|
||||||
|
vm_hypervisor='Hypervisor',
|
||||||
|
vm_migrated='Migrated'
|
||||||
|
)
|
||||||
|
)
|
||||||
|
|
||||||
|
# Format the string (elements)
|
||||||
|
for vm in vm_list:
|
||||||
|
if vm_state[vm] == 'start':
|
||||||
|
vm_state_colour = ansiiprint.green()
|
||||||
|
elif vm_state[vm] == 'restart':
|
||||||
|
vm_state_colour = ansiiprint.yellow()
|
||||||
|
elif vm_state[vm] == 'shutdown':
|
||||||
|
vm_state_colour = ansiiprint.yellow()
|
||||||
|
elif vm_state[vm] == 'stop':
|
||||||
|
vm_state_colour = ansiiprint.red()
|
||||||
|
elif vm_state[vm] == 'failed':
|
||||||
|
vm_state_colour = ansiiprint.red()
|
||||||
|
else:
|
||||||
|
vm_state_colour = ansiiprint.blue()
|
||||||
|
|
||||||
|
vm_list_output.append(
|
||||||
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
|
||||||
|
{vm_state_colour}{vm_state: <8}{end_colour} \
|
||||||
|
{vm_memory: <10} {vm_vcpu: <6} \
|
||||||
|
{vm_hypervisor: <{vm_hypervisor_length}} \
|
||||||
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
||||||
|
vm_name_length=vm_name_length,
|
||||||
|
vm_hypervisor_length=vm_hypervisor_length,
|
||||||
|
vm_migrated_length=vm_migrated_length,
|
||||||
|
bold='',
|
||||||
|
end_bold='',
|
||||||
|
vm_state_colour=vm_state_colour,
|
||||||
|
end_colour=ansiiprint.end(),
|
||||||
|
vm_name=vm_name[vm],
|
||||||
|
vm_uuid=vm_uuid[vm],
|
||||||
|
vm_state=vm_state[vm],
|
||||||
|
vm_memory=vm_memory[vm],
|
||||||
|
vm_vcpu=vm_vcpu[vm],
|
||||||
|
vm_hypervisor=vm_hypervisor[vm],
|
||||||
|
vm_migrated=vm_migrated[vm]
|
||||||
|
)
|
||||||
|
)
|
||||||
|
|
||||||
|
click.echo('\n'.join(sorted(vm_list_output)))
|
||||||
|
|
||||||
|
return True, ''
|
||||||
|
|
@ -0,0 +1,60 @@
|
||||||
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
|
# zkhandler.py - Secure versioned ZooKeeper updates
|
||||||
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||||||
|
#
|
||||||
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||||
|
#
|
||||||
|
# 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, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# 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 kazoo.client
|
||||||
|
import lib.ansiiprint
|
||||||
|
|
||||||
|
# Child list function
|
||||||
|
def listchildren(zk_conn, key):
|
||||||
|
children = zk_conn.get_children(key)
|
||||||
|
return children
|
||||||
|
|
||||||
|
# Data read function
|
||||||
|
def readdata(zk_conn, key):
|
||||||
|
data_raw = zk_conn.get(key)
|
||||||
|
data = data_raw[0].decode('ascii')
|
||||||
|
meta = data_raw[1]
|
||||||
|
return data
|
||||||
|
|
||||||
|
# Data write function
|
||||||
|
def writedata(zk_conn, kv):
|
||||||
|
# Get the current version; we base this off the first key (ordering in multi-key calls is irrelevant)
|
||||||
|
first_key = list(kv.keys())[0]
|
||||||
|
orig_data_raw = zk_conn.get(first_key)
|
||||||
|
meta = orig_data_raw[1]
|
||||||
|
if meta == None:
|
||||||
|
ansiiprint.echo('Zookeeper key "{}" does not exist'.format(first_key), '', 'e')
|
||||||
|
return 1
|
||||||
|
|
||||||
|
version = meta.version
|
||||||
|
new_version = version + 1
|
||||||
|
zk_transaction = zk_conn.transaction()
|
||||||
|
for key, data in kv.items():
|
||||||
|
zk_transaction.set_data(key, data.encode('ascii'))
|
||||||
|
try:
|
||||||
|
zk_transaction.check(first_key, new_version)
|
||||||
|
except TypeError:
|
||||||
|
ansiiprint.echo('Zookeeper key "{}" does not match expected version'.format(first_key), '', 'e')
|
||||||
|
return 1
|
||||||
|
zk_transaction.commit()
|
||||||
|
return 0
|
||||||
|
|
||||||
Loading…
Reference in New Issue