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#!/usr/bin/python3
# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# Authors:
# @author: David Blaisonneau <david.blaisonneau@orange.com>
# @author: Arnaud Morin <arnaud1.morin@orange.com>
"""
Virsh library
"""
import subprocess
import os
class OpenSteakVirsh:
virsh = "/usr/bin/virsh"
genisoimage = "/usr/bin/genisoimage"
environment = ""
###
# INIT
###
def __init__(self):
self.environment = dict(os.environ) # Copy current environment
self.environment['LANG'] = 'en_US.UTF-8'
###
# VOLUMES
###
def volumeList(self, pool="default"):
"""
Return all volumes from a pool
"""
p = subprocess.Popen([self.virsh, "-q", "vol-list", pool], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
# Split lines
lines = stdout.splitlines()
# Foreach line, split with space and construct a dictionnary
newLines = {}
for line in lines:
name, path = line.split(maxsplit=1)
newLines[name.strip()] = path.strip()
return newLines
def volumeDelete(self, path):
"""
Delete a volume
"""
p = subprocess.Popen([self.virsh, "-q", "vol-delete", path], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
def volumeClone(self, origin, name, pool="default"):
"""
Clone a volume
"""
p = subprocess.Popen([self.virsh, "-q", "vol-clone", "--pool", pool, origin, name], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
def volumeResize(self, name, size, pool="default"):
"""
Resize a volume
"""
p = subprocess.Popen([self.virsh, "-q", "vol-resize", "--pool", pool, name, size], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
###
# POOLS
###
def poolRefresh(self, pool="default"):
"""
Refresh a pool
"""
p = subprocess.Popen([self.virsh, "-q", "pool-refresh", pool], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
###
# DOMAINS
###
def domainList(self):
"""
Return all domains (VM)
"""
p = subprocess.Popen([self.virsh, "-q", "list", "--all"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
# Split lines
lines = stdout.splitlines()
# Foreach line, split with space and construct a dictionnary
newLines = {}
for line in lines:
id, name, status = line.split(maxsplit=2)
newLines[name.strip()] = status.strip()
return newLines
def domainDefine(self, xml):
"""
Define a domain (create a VM)
"""
p = subprocess.Popen([self.virsh, "-q", "define", xml], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
def domainUndefine(self, name):
"""
Undefine a domain (delete a VM)
"""
p = subprocess.Popen([self.virsh, "-q", "undefine", name], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
def domainStart(self, name):
"""
Define a domain (create a VM)
"""
p = subprocess.Popen([self.virsh, "-q", "start", name], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
def domainDestroy(self, name):
"""
Destroy a domain (stop a VM)
"""
p = subprocess.Popen([self.virsh, "-q", "destroy", name], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
###
# ISO
###
def generateConfiguration(self, name, files):
"""
Generate an ISO file
"""
commandArray = [self.genisoimage, "-quiet", "-o", "/var/lib/libvirt/images/{0}-configuration.iso".format(name), "-volid", "cidata", "-joliet", "-rock"]
for k, f in files.items():
commandArray.append(f)
# Generate the iso file
p = subprocess.Popen(commandArray, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=self.environment)
stdout, stderr = p.communicate()
return {"stdout":stdout, "stderr":stderr}
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