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#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import absolute_import, division, print_function
__metaclass__ = type
import traceback
import time
try:
import libvirt
except ImportError:
HAS_VIRT = False
else:
HAS_VIRT = True
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils._text import to_native
VIRT_FAILED = 1
VIRT_SUCCESS = 0
VIRT_UNAVAILABLE = 2
VIRT_STATE_NAME_MAP = {
0: "running",
1: "running",
2: "running",
3: "paused",
4: "shutdown",
5: "shutdown",
6: "crashed"
}
class VMNotFound(Exception):
pass
class LibvirtConnection(object):
def __init__(self, uri, module):
self.module = module
cmd = "uname -r"
rc, stdout, stderr = self.module.run_command(cmd)
if "xen" in stdout:
conn = libvirt.open(None)
elif "esx" in uri:
auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_NOECHOPROMPT], [], None]
conn = libvirt.openAuth(uri, auth)
else:
conn = libvirt.open(uri)
if not conn:
raise Exception("hypervisor connection failure")
self.conn = conn
def find_vm(self, vmid):
"""
Extra bonus feature: vmid = -1 returns a list of everything
"""
conn = self.conn
vms = []
# this block of code borrowed from virt-manager:
# get working domain's name
ids = conn.listDomainsID()
for id in ids:
vm = conn.lookupByID(id)
vms.append(vm)
# get defined domain
names = conn.listDefinedDomains()
for name in names:
vm = conn.lookupByName(name)
vms.append(vm)
if vmid == -1:
return vms
for vm in vms:
if vm.name() == vmid:
return vm
raise VMNotFound("virtual machine %s not found" % vmid)
def get_status(self, vmid):
state = self.find_vm(vmid).info()[0]
return VIRT_STATE_NAME_MAP.get(state, "unknown")
class Virt(object):
def __init__(self, uri, module):
self.module = module
self.uri = uri
def __get_conn(self):
self.conn = LibvirtConnection(self.uri, self.module)
return self.conn
def status(self, vmid):
"""
Return a state suitable for server consumption. Aka, codes.py values, not XM output.
"""
self.__get_conn()
return self.conn.get_status(vmid)
def core(module):
states = module.params.get('states', None)
guest = module.params.get('name', None)
uri = module.params.get('uri', None)
delay = module.params.get('delay', None)
sleep = module.params.get('sleep', None)
timeout = module.params.get('timeout', None)
v = Virt(uri, module)
res = {'changed': False, 'failed': True}
if delay > 0:
time.sleep(delay)
for _ in range(0, timeout, sleep):
state = v.status(guest)
if state in states:
res['state'] = state
res['failed'] = False
res['msg'] = "guest '%s' has reached state: %s" % (guest, state)
return VIRT_SUCCESS, res
time.sleep(sleep)
res['msg'] = "timeout waiting for guest '%s' to reach one of states: %s" % (guest, ', '.join(states))
return VIRT_FAILED, res
def main():
module = AnsibleModule(argument_spec=dict(
name=dict(aliases=['guest'], required=True),
states=dict(type='list', required=True),
uri=dict(default='qemu:///system'),
delay=dict(type='int', default=0),
sleep=dict(type='int', default=1),
timeout=dict(type='int', default=300),
))
if not HAS_VIRT:
module.fail_json(
msg='The `libvirt` module is not importable. Check the requirements.'
)
for state in module.params.get('states', None):
if state not in set(VIRT_STATE_NAME_MAP.values()):
module.fail_json(
msg="states contains invalid state '%s', must be one of %s" % (state, ', '.join(set(VIRT_STATE_NAME_MAP.values())))
)
rc = VIRT_SUCCESS
try:
rc, result = core(module)
except Exception as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
if rc != 0: # something went wrong emit the msg
module.fail_json(rc=rc, msg=result)
else:
module.exit_json(**result)
if __name__ == '__main__':
main()
|
