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kubevirt_rs: new wait logic (#54726)

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Mariusz Mazur 2019-04-02 16:42:33 +02:00 committed by ansibot
parent 2c169e0baf
commit 7ea01da38f
1 changed files with 23 additions and 38 deletions
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61
lib/ansible/modules/cloud/kubevirt/kubevirt_rs.py
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@ -113,12 +113,6 @@ import traceback
from ansible.module_utils.k8s.common import AUTH_ARG_SPEC
try:
from openshift.dynamic.client import ResourceInstance
except ImportError:
# Handled in module_utils
pass
from ansible.module_utils.kubevirt import (
virtdict,
KubeVirtRawModule,
@ -143,26 +137,20 @@ class KubeVirtVMIRS(KubeVirtRawModule):
argument_spec.update(copy.deepcopy(VMIR_ARG_SPEC))
return argument_spec
def _read_stream(self, resource, watcher, stream, name, replicas):
def wait_for_replicas(self, replicas):
""" Wait for ready_replicas to equal the requested number of replicas. """
if self.params.get('state') == 'absent':
# TODO: Wait for absent
return
resource = self.find_supported_resource(KIND)
return_obj = None
for event in stream:
if event.get('object'):
obj = ResourceInstance(resource, event['object'])
if obj.metadata.name == name and hasattr(obj, 'status'):
if replicas == 0:
if not hasattr(obj.status, 'readyReplicas') or not obj.status.readyReplicas:
return_obj = obj
watcher.stop()
break
if hasattr(obj.status, 'readyReplicas') and obj.status.readyReplicas == replicas:
return_obj = obj
watcher.stop()
break
for event in resource.watch(namespace=self.namespace, timeout=self.params.get('wait_timeout')):
entity = event['object']
if entity.metadata.name != self.name:
continue
status = entity.get('status', {})
readyReplicas = status.get('readyReplicas', 0)
if readyReplicas == replicas:
return_obj = entity
break
if not return_obj:
self.fail_json(msg="Error fetching the patched object. Try a higher wait_timeout value.")
@ -173,16 +161,6 @@ class KubeVirtVMIRS(KubeVirtRawModule):
"the wait_timeout period.".format(return_obj.status.ready_replicas, replicas))
return return_obj.to_dict()
def wait_for_replicas(self):
namespace = self.params.get('namespace')
wait_timeout = self.params.get('wait_timeout')
replicas = self.params.get('replicas')
name = self.name
resource = self.find_supported_resource(KIND)
w, stream = self._create_stream(resource, namespace, wait_timeout)
return self._read_stream(resource, w, stream, name, replicas)
def execute_module(self):
# Parse parameters specific for this module:
definition = virtdict()
@ -202,10 +180,17 @@ class KubeVirtVMIRS(KubeVirtRawModule):
changed = result_crud['changed']
result = result_crud.pop('result')
# Wait for the replicas:
wait = self.params.get('wait')
if wait:
result = self.wait_for_replicas()
# When creating a new VMIRS object without specifying `replicas`, assume it's '1' to make the
# wait logic work correctly
if changed and result_crud['method'] == 'create' and replicas is None:
replicas = 1
# Wait for the new number of ready replicas after a CRUD update
# Note1: doesn't work correctly when reducing number of replicas due to how VMIRS works (as of kubevirt 1.5.0)
# Note2: not the place to wait for the VMIs to get deleted when deleting the VMIRS object; that *might* be
# achievable in execute_crud(); keywords: orphanDependents, propagationPolicy, DeleteOptions
if self.params.get('wait') and replicas is not None and self.params.get('state') == 'present':
result = self.wait_for_replicas(replicas)
# Return from the module:
self.exit_json(**{