#!/usr/bin/python
# Copyright 2013 Google Inc.
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see .
DOCUMENTATION = '''
---
module: gce_pd
short_description: utilize GCE persistent disk resources
description:
- This module can create and destroy unformatted GCE persistent disks
U(https://developers.google.com/compute/docs/disks#persistentdisks).
It also supports attaching and detaching disks from running instances
but does not support creating boot disks from images or snapshots. The
'gce' module supports creating instances with boot disks.
Full install/configuration instructions for the gce* modules can
be found in the comments of ansible/test/gce_tests.py.
options:
detach_only:
description:
- do not destroy the disk, merely detach it from an instance
required: false
default: "no"
choices: ["yes", "no"]
aliases: []
instance_name:
description:
- instance name if you wish to attach or detach the disk
required: false
default: null
aliases: []
mode:
description:
- GCE mount mode of disk, READ_ONLY (default) or READ_WRITE
required: false
default: "READ_ONLY"
choices: ["READ_WRITE", "READ_ONLY"]
aliases: []
name:
description:
- name of the disk
required: true
default: null
aliases: []
size_gb:
description:
- whole integer size of disk (in GB) to create, default is 10 GB
required: false
default: 10
aliases: []
state:
description:
- desired state of the persistent disk
required: false
default: "present"
choices: ["active", "present", "absent", "deleted"]
aliases: []
zone:
description:
- zone in which to create the disk
required: false
default: "us-central1-b"
aliases: []
requirements: [ "libcloud" ]
author: Eric Johnson
'''
EXAMPLES = '''
# Simple attachment action to an existing instance
- local_action:
module: gce_pd
instance_name: notlocalhost
size_gb: 5
name: pd
'''
import sys
try:
from libcloud.compute.types import Provider
from libcloud.compute.providers import get_driver
from libcloud.common.google import GoogleBaseError, QuotaExceededError, \
ResourceExistsError, ResourceNotFoundError, ResourceInUseError
_ = Provider.GCE
except ImportError:
print("failed=True " + \
"msg='libcloud with GCE support is required for this module.'")
sys.exit(1)
# Load in the libcloud secrets file
try:
import secrets
except ImportError:
secrets = None
ARGS = getattr(secrets, 'GCE_PARAMS', ())
KWARGS = getattr(secrets, 'GCE_KEYWORD_PARAMS', {})
if not ARGS or not KWARGS.has_key('project'):
print("failed=True " + \
"msg='Missing GCE connection parameters in libcloud secrets file.'")
sys.exit(1)
def unexpected_error_msg(error):
msg='Unexpected response: HTTP return_code['
msg+='%s], API error code[%s] and message: %s' % (
error.http_code, error.code, str(error.value))
return msg
def main():
module = AnsibleModule(
argument_spec = dict(
detach_only = dict(choice=BOOLEANS),
instance_name = dict(),
mode = dict(default='READ_ONLY',
choices=['READ_WRITE', 'READ_ONLY']),
name = dict(required=True),
size_gb = dict(default=10),
state = dict(default='present'),
zone = dict(default='us-central1-b'),
)
)
detach_only = module.params.get('detach_only')
instance_name = module.params.get('instance_name')
mode = module.params.get('mode')
name = module.params.get('name')
size_gb = module.params.get('size_gb')
state = module.params.get('state')
zone = module.params.get('zone')
if detach_only and not instance_name:
module.fail_json(
msg='Must specify an instance name when detaching a disk',
changed=False)
try:
gce = get_driver(Provider.GCE)(*ARGS, datacenter=zone, **KWARGS)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
disk = inst = None
changed = is_attached = False
json_output = { 'name': name, 'zone': zone, 'state': state }
if detach_only:
json_output['detach_only'] = True
json_output['detached_from_instance'] = instance_name
if instance_name:
# user wants to attach/detach from an existing instance
try:
inst = gce.ex_get_node(instance_name, zone)
# is the disk attached?
for d in inst.extra['disks']:
if d['deviceName'] == name:
is_attached = True
json_output['attached_mode'] = d['mode']
json_output['attached_to_instance'] = inst.name
except:
pass
# find disk if it already exists
try:
disk = gce.ex_get_volume(name)
json_output['size_gb'] = int(disk.size)
except ResourceNotFoundError:
pass
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
# user wants a disk to exist. If "instance_name" is supplied the user
# also wants it attached
if state in ['active', 'present']:
if not size_gb:
module.fail_json(msg="Must supply a size_gb", changed=False)
try:
size_gb = int(round(float(size_gb)))
if size_gb < 1: raise Exception
except:
module.fail_json(msg="Must supply a size_gb larger than 1 GB",
changed=False)
if instance_name and inst is None:
module.fail_json(msg='Instance %s does not exist in zone %s' % (
instance_name, zone), changed=False)
if not disk:
try:
disk = gce.create_volume(size_gb, name, location=zone)
except ResourceExistsError:
pass
except QuotaExceededError:
module.fail_json(msg='Requested disk size exceeds quota',
changed=False)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
json_output['size_gb'] = size_gb
changed = True
if inst and not is_attached:
try:
gce.attach_volume(inst, disk, device=name, ex_mode=mode)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
json_output['attached_to_instance'] = inst.name
json_output['attached_mode'] = mode
changed = True
# user wants to delete a disk (or perhaps just detach it).
if state in ['absent', 'deleted'] and disk:
if inst and is_attached:
try:
gce.detach_volume(disk, ex_node=inst)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
changed = True
if not detach_only:
try:
gce.destroy_volume(disk)
except ResourceInUseError as e:
module.fail_json(msg=str(e.value), changed=False)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
changed = True
json_output['changed'] = changed
print json.dumps(json_output)
sys.exit(0)
# this is magic, see lib/ansible/module_common.py
#<>
main()