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GCE: Add support for 'number' parameter for manually provisioned Google Compute clusters (#4276)

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* Add option for number parameter to generate manually provisioned clusters from a base name

* Refactor code to work with starting and stopped when number is specified

* Update docs

* Fix documentation error breaking Travis

* Fixes for async gce operations

* Fix documentation

* base_name from parameter to alias for name and fixes for renaming variables

* Fix breaking change on gce.py

* Fix bugs with name parameter

* Fix comments for Github build checks

* Add logic to set changed appropriately for cluster provisioning
This commit is contained in:
John Baublitz 2016-10-20 17:18:14 -04:00 committed by Matt Clay
parent ff6bac126e
commit 352b620665
1 changed files with 110 additions and 66 deletions
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176
lib/ansible/modules/cloud/google/gce.py
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@ -95,10 +95,17 @@ options:
aliases: []
name:
description:
- identifier when working with a single instance. Will be deprecated in a future release.
Please 'instance_names' instead.
- either a name of a single instance or when used with 'num_instances',
the base name of a cluster of nodes
required: false
aliases: []
aliases: ['base_name']
num_instances:
description:
- can be used with 'name', specifies
the number of nodes to provision using 'name'
as a base name
required: false
version_added: "2.3"
network:
description:
- name of the network, 'default' will be used if not specified
@ -349,7 +356,7 @@ def get_instance_info(inst):
})
def create_instances(module, gce, instance_names):
def create_instances(module, gce, instance_names, number):
"""Creates new instances. Attributes other than instance_names are picked
up from 'module'
@ -459,40 +466,62 @@ def create_instances(module, gce, instance_names):
module.fail_json(msg='Missing required create instance variable',
changed=False)
for name in instance_names:
pd = None
if lc_disks:
pd = lc_disks[0]
elif persistent_boot_disk:
gce_args = dict(
location=lc_zone,
ex_network=network, ex_tags=tags, ex_metadata=metadata,
ex_can_ip_forward=ip_forward,
external_ip=instance_external_ip, ex_disk_auto_delete=disk_auto_delete,
ex_service_accounts=ex_sa_perms
)
if preemptible is not None:
gce_args['ex_preemptible'] = preemptible
if subnetwork is not None:
gce_args['ex_subnetwork'] = subnetwork
if isinstance(instance_names, str) and not number:
instance_names = [instance_names]
if isinstance(instance_names, str) and number:
instance_responses = gce.ex_create_multiple_nodes(instance_names, lc_machine_type,
lc_image(), number, **gce_args)
for resp in instance_responses:
n = resp
if isinstance(resp, libcloud.compute.drivers.gce.GCEFailedNode):
try:
n = gce.ex_get_node(n.name, lc_zone)
except ResourceNotFoundError:
pass
else:
# Assure that at least one node has been created to set changed=True
changed = True
new_instances.append(n)
else:
for instance in instance_names:
pd = None
if lc_disks:
pd = lc_disks[0]
elif persistent_boot_disk:
try:
pd = gce.ex_get_volume("%s" % instance, lc_zone)
except ResourceNotFoundError:
pd = gce.create_volume(None, "%s" % instance, image=lc_image())
gce_args['ex_boot_disk'] = pd
inst = None
try:
pd = gce.ex_get_volume("%s" % name, lc_zone)
inst = gce.ex_get_node(instance, lc_zone)
except ResourceNotFoundError:
pd = gce.create_volume(None, "%s" % name, image=lc_image())
gce_args = dict(
location=lc_zone,
ex_network=network, ex_tags=tags, ex_metadata=metadata,
ex_boot_disk=pd, ex_can_ip_forward=ip_forward,
external_ip=instance_external_ip, ex_disk_auto_delete=disk_auto_delete,
ex_service_accounts=ex_sa_perms
)
if preemptible is not None:
gce_args['ex_preemptible'] = preemptible
if subnetwork is not None:
gce_args['ex_subnetwork'] = subnetwork
inst = None
try:
inst = gce.ex_get_node(name, lc_zone)
except ResourceNotFoundError:
inst = gce.create_node(
name, lc_machine_type, lc_image(), **gce_args
)
changed = True
except GoogleBaseError as e:
module.fail_json(msg='Unexpected error attempting to create ' +
'instance %s, error: %s' % (name, e.value))
inst = gce.create_node(
instance, lc_machine_type, lc_image(), **gce_args
)
changed = True
except GoogleBaseError as e:
module.fail_json(msg='Unexpected error attempting to create ' +
'instance %s, error: %s' % (instance, e.value))
if inst:
new_instances.append(inst)
for inst in new_instances:
for i, lc_disk in enumerate(lc_disks):
# Check whether the disk is already attached
if (len(inst.extra['disks']) > i):
@ -515,9 +544,6 @@ def create_instances(module, gce, instance_names):
inst.extra['disks'].append(
{'source': lc_disk.extra['selfLink'], 'index': i})
if inst:
new_instances.append(inst)
instance_names = []
instance_json_data = []
for inst in new_instances:
@ -527,7 +553,7 @@ def create_instances(module, gce, instance_names):
return (changed, instance_json_data, instance_names)
def change_instance_state(module, gce, instance_names, zone_name, state):
def change_instance_state(module, gce, instance_names, number, zone_name, state):
"""Changes the state of a list of instances. For example,
change from started to stopped, or started to absent.
@ -541,31 +567,46 @@ def change_instance_state(module, gce, instance_names, zone_name, state):
"""
changed = False
changed_instance_names = []
for name in instance_names:
nodes = []
state_instance_names = []
if isinstance(instance_names, str) and number:
node_names = ['%s-%03d' % (instance_names, i) for i in range(number)]
elif isinstance(instance_names, str) and not number:
node_names = [instance_names]
else:
node_names = instance_names
for name in node_names:
inst = None
try:
inst = gce.ex_get_node(name, zone_name)
except ResourceNotFoundError:
pass
state_instance_names.append(name)
except Exception as e:
module.fail_json(msg=unexpected_error_msg(e), changed=False)
if inst and state in ['absent', 'deleted']:
gce.destroy_node(inst)
changed_instance_names.append(inst.name)
changed = True
elif inst and state == 'started' and \
inst.state == libcloud.compute.types.NodeState.STOPPED:
gce.ex_start_node(inst)
changed_instance_names.append(inst.name)
changed = True
elif inst and state in ['stopped', 'terminated'] and \
inst.state == libcloud.compute.types.NodeState.RUNNING:
gce.ex_stop_node(inst)
changed_instance_names.append(inst.name)
changed = True
else:
nodes.append(inst)
state_instance_names.append(name)
return (changed, changed_instance_names)
if state in ['absent', 'deleted'] and number:
changed_nodes = gce.ex_destroy_multiple_nodes(nodes) or [False]
changed = reduce(lambda x, y: x or y, changed_nodes)
else:
for node in nodes:
if state in ['absent', 'deleted']:
gce.destroy_node(node)
changed = True
elif state == 'started' and \
node.state == libcloud.compute.types.NodeState.STOPPED:
gce.ex_start_node(node)
changed = True
elif state in ['stopped', 'terminated'] and \
node.state == libcloud.compute.types.NodeState.RUNNING:
gce.ex_stop_node(node)
changed = True
return (changed, state_instance_names)
def main():
module = AnsibleModule(
@ -574,7 +615,8 @@ def main():
instance_names = dict(),
machine_type = dict(default='n1-standard-1'),
metadata = dict(),
name = dict(),
name = dict(aliases=['base_name']),
num_instances = dict(type='int'),
network = dict(default='default'),
subnetwork = dict(),
persistent_boot_disk = dict(type='bool', default=False),
@ -593,7 +635,8 @@ def main():
external_ip=dict(default='ephemeral'),
disk_auto_delete = dict(type='bool', default=True),
preemptible = dict(type='bool', default=None),
)
),
mutually_exclusive=[('instance_names', 'name')]
)
if not HAS_PYTHON26:
@ -608,6 +651,7 @@ def main():
machine_type = module.params.get('machine_type')
metadata = module.params.get('metadata')
name = module.params.get('name')
number = module.params.get('num_instances')
network = module.params.get('network')
subnetwork = module.params.get('subnetwork')
persistent_boot_disk = module.params.get('persistent_boot_disk')
@ -618,13 +662,13 @@ def main():
preemptible = module.params.get('preemptible')
changed = False
inames = []
inames = None
if isinstance(instance_names, list):
inames = instance_names
elif isinstance(instance_names, str):
inames = instance_names.split(',')
if name:
inames.append(name)
inames = name
if not inames:
module.fail_json(msg='Must specify a "name" or "instance_names"',
changed=False)
@ -642,20 +686,20 @@ def main():
json_output = {'zone': zone}
if state in ['absent', 'deleted', 'started', 'stopped', 'terminated']:
json_output['state'] = state
(changed, changed_instance_names) = change_instance_state(
module, gce, inames, zone, state)
(changed, state_instance_names) = change_instance_state(
module, gce, inames, number, zone, state)
# based on what user specified, return the same variable, although
# value could be different if an instance could not be destroyed
if instance_names:
json_output['instance_names'] = changed_instance_names
if instance_names or name and number:
json_output['instance_names'] = state_instance_names
elif name:
json_output['name'] = name
elif state in ['active', 'present']:
json_output['state'] = 'present'
(changed, instance_data, instance_name_list) = create_instances(
module, gce, inames)
module, gce, inames, number)
json_output['instance_data'] = instance_data
if instance_names:
json_output['instance_names'] = instance_name_list