def get_resource(list_resources: Callable[[], Any], log: BoundLogger,
resource_type: str, resource_name: str) -> Optional[Any]:
log.msg('Checking for existing {}'.format(resource_type),
name=resource_name)
resource_list = list_resources()
matching_resources = [
d for d in resource_list.items if d.metadata.name == resource_name
]
if len(matching_resources) > 2:
raise ValueError('Found {} {}s matching `{}`'.format(
len(matching_resources), resource_type, resource_name))
if not matching_resources:
return None
return matching_resources[0]
def upsert_resource(existing_resource: Optional[Any], target_resource: Any,
log: BoundLogger, resource_type: str,
create: Callable[[], Any], patch: Callable[[],
Any]) -> Any:
if existing_resource is not None:
if comparisons.specs_are_the_same(existing_resource, target_resource):
log.msg('Existing {} does not need to be updated'.format(
resource_type),
name=existing_resource.metadata.name)
new_resource = existing_resource
else:
log.msg('Updating existing {}'.format(resource_type))
new_resource = patch()
log.msg('Updated {}'.format(resource_type),
name=new_resource.metadata.name)
else:
log.msg('Creating new {}'.format(resource_type))
new_resource = create()
log.msg('Created {}'.format(resource_type),
name=new_resource.metadata.name)
return new_resource
def delete_resources(existing_resources: List[Any], namespace: V1Namespace,
clients: Clients, log: BoundLogger):
for existing_resource in existing_resources:
if existing_resource is None:
pass
elif existing_resource.__class__ == V1Deployment:
log.msg('Deleting deployment')
status = clients.apps.delete_namespaced_deployment(
name=existing_resource.metadata.name,
namespace=namespace.metadata.name)
log.msg('Deployment deleted', message=status.message)
elif existing_resource.__class__ == V1Ingress:
log.msg('Deleting ingress')
status = clients.networking.delete_namespaced_ingress(
name=existing_resource.metadata.name,
namespace=namespace.metadata.name)
log.msg('Ingress deleted', message=status.message)
elif existing_resource.__class__ == V1Namespace:
log.msg('Deleting namespace')
status = clients.core.delete_namespace(
name=namespace.metadata.name)
log.msg('Namespace deleted', name=status.message)
elif existing_resource.__class__ == V1Service:
log.msg('Deleting service')
svc = clients.core.delete_namespaced_service(
name=existing_resource.metadata.name,
namespace=namespace.metadata.name)
log.msg('Service deleted', message=svc.metadata.name)
else:
raise NotImplementedError(
'Deleting {} is not yet supported'.format(
existing_resource.__class__))