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refactored vm.py to create a VM

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This commit is contained in:
Dominique Roux 2020-01-24 13:56:08 +01:00
commit 58daf8191e
3 changed files with 73 additions and 49 deletions
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106
uncloud/hack/vm.py
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@ -29,58 +29,72 @@ from uncloud.hack.mac import MAC
class VM(object):
def __init__(self, config):
self.config = config
self.db = DB(config, prefix="/vm")
self.config = config
#TODO: Enable etcd lookup
self.no_db = self.config.arguments['no_db']
if not self.no_db:
self.db = DB(self.config, prefix="/vm")
#TODO: Select generic
self.hackprefix="/home/nico/vcs/uncloud/uncloud/hack/hackcloud" #TODO: Should be removed midterm
self.qemu="/usr/bin/qemu-system-x86_64" #TODO: should be in config
self.accel="kvm" #TODO: should be config
#TODO: Select generic
#self.hackprefix="/home/nico/vcs/uncloud/uncloud/hack/hackcloud" #TODO: Should be removed midterm
self.hackprefix="/home/rouxdo/Work/ungleich/uncloud/uncloud/hack/hackcloud" #TODO: Dominique testing
self.qemu="/usr/bin/qemu-system-x86_64" #TODO: should be in config
self.accel="kvm" #TODO: should be config
self.vm = {}
self.vm = {}
#TODO: Touch later! (when necessary)
self.ifup = os.path.join(self.hackprefix, "ifup.sh")
self.ifdown = os.path.join(self.hackprefix, "ifdown.sh")
#TODO: this should be generic
self.vm['owner']="nico" #TODO: Should in config.arguments
#self.config['vni_hex'] = "{:x}".format(self.config.vni)
#self.config['bridgedev'] = "br{}".format(self.config['vni_hex'])
self.vni_hex = "{:x}".format(self.config.arguments['vni'])
self.bridgedev = "br{}".format(self.vni_hex)
def commandline(self):
"""This method is used to trigger / create a vm from the cli"""
#TODO: read arguments from cli
#TODO: create etcd json object
self.vm['owner']= "nico"
self.vm['memory'] = self.config.arguments['memory']
self.vm['cores'] = self.config.arguments['cores']
self.vm['os_image'] = os.path.join(self.hackprefix, "alpine-virt-3.11.2-x86_64.iso")
self.create_template()
# mimics api call = this will already be in etcd
#self.vm['os_image'] = self.db.get("os_image")
self.create()
def create_template(self):
self.uuid = uuid.uuid4()
#TODO: This all should be generic
self.vm['uuid'] = str(self.uuid)
#self.vni_hex = "{:x}".format(self.config.arguments['vni'])
self.bridgedev = "br{}".format("{:x}".format(self.config.arguments['vni']))
#TODO: Enable sudo
if self.config.arguments['use_sudo']:
self.sudo = "sudo"
self.mac=MAC(self.config)
self.mac.create()
self.vm['ifname'] = "uc{}".format(self.mac.to_str_format())
#self.vm['commandline'] = [ "{}".format(self.sudo),
self.vm['commandline'] = [ "{}".format(self.sudo),
"{}".format(self.qemu),
"-name", "uncloud-{}".format(self.vm['uuid']),
"-machine", "pc,accel={}".format(self.accel),
"-m", "{}".format(self.vm['memory']),
"-smp", "{}".format(self.vm['cores']),
"-uuid", "{}".format(self.vm['uuid']),
"-drive", "file={},media=cdrom".format(self.vm['os_image']),
"-netdev", "tap,id=netmain,script={},downscript={},ifname={}".format(self.ifup, self.ifdown, self.mac),
"-device", "virtio-net-pci,netdev=netmain,id=net0,mac={}".format(self.mac)
]
#TODO: Touch later! (when necessary)
self.ifup = os.path.join(self.hackprefix, "ifup.sh")
self.ifdown = os.path.join(self.hackprefix, "ifdown.sh")
def create(self):
self.uuid = uuid.uuid4()
#TODO: This all should be generic
self.vm['uuid'] = str(self.uuid)
self.vm['memory'] = 1024
self.vm['cores'] = 2
self.vm['os_image'] = os.path.join(self.hackprefix, "alpine-virt-3.11.2-x86_64.iso")
if not self.no_db:
self.db.set(str(self.vm['uuid']),
self.vm,
as_json=True)
self.mac=MAC(self.config)
self.mac.create()
self.vm['ifname'] = "uc{}".format(self.mac.to_str_format())
self.vm['commandline' ] = [ "sudo",
"{}".format(self.qemu),
"-name", "uncloud-{}".format(self.vm['uuid']),
"-machine", "pc,accel={}".format(self.accel),
"-m", "{}".format(self.vm['memory']),
"-smp", "{}".format(self.vm['cores']),
"-uuid", "{}".format(self.vm['uuid']),
"-drive", "file={},media=cdrom".format(self.vm['os_image']),
"-netdev", "tap,id=netmain,script={},downscript={},ifname={}".format(self.ifup, self.ifdown),self.mac,
"-device", "virtio-net-pci,netdev=netmain,id=net0,mac={}".format(self.mac)
]
# TODO: Add ip link command afterwards (rouxdo)
self.db.set(str(self.vm['uuid']),
self.vm,
as_json=True)
print(" ".join(self.vm['commandline']))
subprocess.run(self.vm['commandline'])
print(" ".join(self.vm['commandline']))
subprocess.run(self.vm['commandline']) #TODO: run in background
#TODO: Add interface ifname to bridge brXX (via net.py: public function add iface to bridge)