/usr/lib/python2.7/dist-packages/magnum/conductor/handlers/cluster_conductor.py is in python-magnum 3.1.1-5.
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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
from heatclient.common import template_utils
from heatclient import exc
from oslo_config import cfg
from oslo_log import log as logging
from oslo_service import loopingcall
from oslo_utils import importutils
from pycadf import cadftaxonomy as taxonomy
import six
from magnum.common import clients
from magnum.common import exception
from magnum.common import short_id
from magnum.conductor.handlers.common import cert_manager
from magnum.conductor.handlers.common import trust_manager
from magnum.conductor import scale_manager
from magnum.conductor import utils as conductor_utils
from magnum.drivers.common import template_def
from magnum.i18n import _
from magnum.i18n import _LE
from magnum.i18n import _LI
from magnum import objects
from magnum.objects import fields
cluster_heat_opts = [
cfg.IntOpt('max_attempts',
default=2000,
help=('Number of attempts to query the Heat stack for '
'finding out the status of the created stack and '
'getting template outputs. This value is ignored '
'during cluster creation if timeout is set as the poll '
'will continue until cluster creation either ends '
'or times out.'),
deprecated_group='bay_heat'),
cfg.IntOpt('wait_interval',
default=1,
help=('Sleep time interval between two attempts of querying '
'the Heat stack. This interval is in seconds.'),
deprecated_group='bay_heat'),
cfg.IntOpt('create_timeout',
default=60,
help=('The length of time to let cluster creation continue. '
'This interval is in minutes. The default is 60 minutes.'
),
deprecated_group='bay_heat',
deprecated_name='bay_create_timeout')
]
CONF = cfg.CONF
CONF.register_opts(cluster_heat_opts, group='cluster_heat')
LOG = logging.getLogger(__name__)
def _extract_template_definition(context, cluster, scale_manager=None):
cluster_template = conductor_utils.retrieve_cluster_template(context,
cluster)
cluster_distro = cluster_template.cluster_distro
cluster_coe = cluster_template.coe
cluster_server_type = cluster_template.server_type
definition = template_def.TemplateDefinition.get_template_definition(
cluster_server_type,
cluster_distro,
cluster_coe)
return definition.extract_definition(context, cluster_template, cluster,
scale_manager=scale_manager)
def _get_env_files(template_path, env_rel_paths):
template_dir = os.path.dirname(template_path)
env_abs_paths = [os.path.join(template_dir, f) for f in env_rel_paths]
environment_files = []
env_map, merged_env = (
template_utils.process_multiple_environments_and_files(
env_paths=env_abs_paths, env_list_tracker=environment_files))
return environment_files, env_map
def _create_stack(context, osc, cluster, create_timeout):
template_path, heat_params, env_files = (
_extract_template_definition(context, cluster))
tpl_files, template = template_utils.get_template_contents(template_path)
environment_files, env_map = _get_env_files(template_path, env_files)
tpl_files.update(env_map)
# Make sure no duplicate stack name
stack_name = '%s-%s' % (cluster.name, short_id.generate_id())
if create_timeout:
heat_timeout = create_timeout
else:
# no create_timeout value was passed in to the request
# so falling back on configuration file value
heat_timeout = cfg.CONF.cluster_heat.create_timeout
fields = {
'stack_name': stack_name,
'parameters': heat_params,
'environment_files': environment_files,
'template': template,
'files': tpl_files,
'timeout_mins': heat_timeout
}
created_stack = osc.heat().stacks.create(**fields)
return created_stack
def _update_stack(context, osc, cluster, scale_manager=None, rollback=False):
template_path, heat_params, env_files = _extract_template_definition(
context, cluster, scale_manager=scale_manager)
tpl_files, template = template_utils.get_template_contents(template_path)
environment_files, env_map = _get_env_files(template_path, env_files)
tpl_files.update(env_map)
fields = {
'parameters': heat_params,
'environment_files': environment_files,
'template': template,
'files': tpl_files,
'disable_rollback': not rollback
}
return osc.heat().stacks.update(cluster.stack_id, **fields)
class Handler(object):
def __init__(self):
super(Handler, self).__init__()
# Cluster Operations
def cluster_create(self, context, cluster, create_timeout):
LOG.debug('cluster_heat cluster_create')
osc = clients.OpenStackClients(context)
try:
# Create trustee/trust and set them to cluster
trust_manager.create_trustee_and_trust(osc, cluster)
# Generate certificate and set the cert reference to cluster
cert_manager.generate_certificates_to_cluster(cluster,
context=context)
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_CREATE, taxonomy.OUTCOME_PENDING)
created_stack = _create_stack(context, osc, cluster,
create_timeout)
except Exception as e:
cluster.status = fields.ClusterStatus.CREATE_FAILED
cluster.status_reason = six.text_type(e)
cluster.create()
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_CREATE, taxonomy.OUTCOME_FAILURE)
if isinstance(e, exc.HTTPBadRequest):
e = exception.InvalidParameterValue(message=six.text_type(e))
raise e
raise
cluster.stack_id = created_stack['stack']['id']
cluster.status = fields.ClusterStatus.CREATE_IN_PROGRESS
cluster.create()
self._poll_and_check(osc, cluster)
return cluster
def cluster_update(self, context, cluster, rollback=False):
LOG.debug('cluster_heat cluster_update')
osc = clients.OpenStackClients(context)
stack = osc.heat().stacks.get(cluster.stack_id)
allow_update_status = (
fields.ClusterStatus.CREATE_COMPLETE,
fields.ClusterStatus.UPDATE_COMPLETE,
fields.ClusterStatus.RESUME_COMPLETE,
fields.ClusterStatus.RESTORE_COMPLETE,
fields.ClusterStatus.ROLLBACK_COMPLETE,
fields.ClusterStatus.SNAPSHOT_COMPLETE,
fields.ClusterStatus.CHECK_COMPLETE,
fields.ClusterStatus.ADOPT_COMPLETE
)
if stack.stack_status not in allow_update_status:
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_UPDATE, taxonomy.OUTCOME_FAILURE)
operation = _('Updating a cluster when stack status is '
'"%s"') % stack.stack_status
raise exception.NotSupported(operation=operation)
delta = cluster.obj_what_changed()
if not delta:
return cluster
manager = scale_manager.ScaleManager(context, osc, cluster)
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_UPDATE, taxonomy.OUTCOME_PENDING)
_update_stack(context, osc, cluster, manager, rollback)
self._poll_and_check(osc, cluster)
return cluster
def cluster_delete(self, context, uuid):
LOG.debug('cluster_heat cluster_delete')
osc = clients.OpenStackClients(context)
cluster = objects.Cluster.get_by_uuid(context, uuid)
stack_id = cluster.stack_id
# NOTE(sdake): This will execute a stack_delete operation. This will
# Ignore HTTPNotFound exceptions (stack wasn't present). In the case
# that Heat couldn't find the stack representing the cluster, likely a
# user has deleted the stack outside the context of Magnum. Therefore
# the contents of the cluster are forever lost.
#
# If the exception is unhandled, the original exception will be raised.
try:
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_DELETE, taxonomy.OUTCOME_PENDING)
osc.heat().stacks.delete(stack_id)
except exc.HTTPNotFound:
LOG.info(_LI('The stack %s was not found during cluster'
' deletion.'), stack_id)
try:
trust_manager.delete_trustee_and_trust(osc, context, cluster)
cert_manager.delete_certificates_from_cluster(cluster,
context=context)
cluster.destroy()
except exception.ClusterNotFound:
LOG.info(_LI('The cluster %s has been deleted by others.'),
uuid)
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_DELETE, taxonomy.OUTCOME_SUCCESS)
return None
except exc.HTTPConflict:
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_DELETE, taxonomy.OUTCOME_FAILURE)
raise exception.OperationInProgress(cluster_name=cluster.name)
except Exception:
conductor_utils.notify_about_cluster_operation(
context, taxonomy.ACTION_DELETE, taxonomy.OUTCOME_FAILURE)
raise
cluster.status = fields.ClusterStatus.DELETE_IN_PROGRESS
cluster.save()
self._poll_and_check(osc, cluster)
return None
def _poll_and_check(self, osc, cluster):
poller = HeatPoller(osc, cluster)
lc = loopingcall.FixedIntervalLoopingCall(f=poller.poll_and_check)
lc.start(cfg.CONF.cluster_heat.wait_interval, True)
class HeatPoller(object):
def __init__(self, openstack_client, cluster):
self.openstack_client = openstack_client
self.context = self.openstack_client.context
self.cluster = cluster
self.attempts = 0
self.cluster_template = conductor_utils.retrieve_cluster_template(
self.context, cluster)
self.template_def = \
template_def.TemplateDefinition.get_template_definition(
self.cluster_template.server_type,
self.cluster_template.cluster_distro,
self.cluster_template.coe)
def poll_and_check(self):
# TODO(yuanying): temporary implementation to update api_address,
# node_addresses and cluster status
stack = self.openstack_client.heat().stacks.get(self.cluster.stack_id)
self.attempts += 1
status_to_event = {
fields.ClusterStatus.DELETE_COMPLETE: taxonomy.ACTION_DELETE,
fields.ClusterStatus.CREATE_COMPLETE: taxonomy.ACTION_CREATE,
fields.ClusterStatus.UPDATE_COMPLETE: taxonomy.ACTION_UPDATE,
fields.ClusterStatus.ROLLBACK_COMPLETE: taxonomy.ACTION_UPDATE,
fields.ClusterStatus.CREATE_FAILED: taxonomy.ACTION_CREATE,
fields.ClusterStatus.DELETE_FAILED: taxonomy.ACTION_DELETE,
fields.ClusterStatus.UPDATE_FAILED: taxonomy.ACTION_UPDATE,
fields.ClusterStatus.ROLLBACK_FAILED: taxonomy.ACTION_UPDATE
}
# poll_and_check is detached and polling long time to check status,
# so another user/client can call delete cluster/stack.
if stack.stack_status == fields.ClusterStatus.DELETE_COMPLETE:
self._delete_complete()
conductor_utils.notify_about_cluster_operation(
self.context, status_to_event[stack.stack_status],
taxonomy.OUTCOME_SUCCESS)
raise loopingcall.LoopingCallDone()
if stack.stack_status in (fields.ClusterStatus.CREATE_COMPLETE,
fields.ClusterStatus.UPDATE_COMPLETE):
self._sync_cluster_and_template_status(stack)
conductor_utils.notify_about_cluster_operation(
self.context, status_to_event[stack.stack_status],
taxonomy.OUTCOME_SUCCESS)
raise loopingcall.LoopingCallDone()
elif stack.stack_status != self.cluster.status:
self._sync_cluster_status(stack)
if stack.stack_status in (fields.ClusterStatus.CREATE_FAILED,
fields.ClusterStatus.DELETE_FAILED,
fields.ClusterStatus.UPDATE_FAILED,
fields.ClusterStatus.ROLLBACK_COMPLETE,
fields.ClusterStatus.ROLLBACK_FAILED):
self._sync_cluster_and_template_status(stack)
self._cluster_failed(stack)
conductor_utils.notify_about_cluster_operation(
self.context, status_to_event[stack.stack_status],
taxonomy.OUTCOME_FAILURE)
raise loopingcall.LoopingCallDone()
# only check max attempts when the stack is being created when
# the timeout hasn't been set. If the timeout has been set then
# the loop will end when the stack completes or the timeout occurs
if stack.stack_status == fields.ClusterStatus.CREATE_IN_PROGRESS:
if (stack.timeout_mins is None and
self.attempts > cfg.CONF.cluster_heat.max_attempts):
LOG.error(_LE('Cluster check exit after %(attempts)s attempts,'
'stack_id: %(id)s, stack_status: %(status)s') %
{'attempts': cfg.CONF.cluster_heat.max_attempts,
'id': self.cluster.stack_id,
'status': stack.stack_status})
raise loopingcall.LoopingCallDone()
else:
if self.attempts > cfg.CONF.cluster_heat.max_attempts:
LOG.error(_LE('Cluster check exit after %(attempts)s attempts,'
'stack_id: %(id)s, stack_status: %(status)s') %
{'attempts': cfg.CONF.cluster_heat.max_attempts,
'id': self.cluster.stack_id,
'status': stack.stack_status})
raise loopingcall.LoopingCallDone()
def _delete_complete(self):
LOG.info(_LI('Cluster has been deleted, stack_id: %s')
% self.cluster.stack_id)
try:
trust_manager.delete_trustee_and_trust(self.openstack_client,
self.context,
self.cluster)
cert_manager.delete_certificates_from_cluster(self.cluster,
context=self.context)
self.cluster.destroy()
except exception.ClusterNotFound:
LOG.info(_LI('The cluster %s has been deleted by others.')
% self.cluster.uuid)
def _sync_cluster_status(self, stack):
self.cluster.status = stack.stack_status
self.cluster.status_reason = stack.stack_status_reason
stack_nc_param = self.template_def.get_heat_param(
cluster_attr='node_count')
self.cluster.node_count = stack.parameters[stack_nc_param]
self.cluster.save()
def get_version_info(self, stack):
stack_param = self.template_def.get_heat_param(
cluster_attr='coe_version')
if stack_param:
self.cluster.coe_version = stack.parameters[stack_param]
tdef = template_def.TemplateDefinition.get_template_definition(
self.cluster_template.server_type,
self.cluster_template.cluster_distro, self.cluster_template.coe)
version_module_path = tdef.driver_module_path+'.version'
try:
ver = importutils.import_module(version_module_path)
container_version = ver.container_version
except Exception:
container_version = None
self.cluster.container_version = container_version
def _sync_cluster_and_template_status(self, stack):
self.template_def.update_outputs(stack, self.cluster_template,
self.cluster)
self.get_version_info(stack)
self._sync_cluster_status(stack)
def _cluster_failed(self, stack):
LOG.error(_LE('Cluster error, stack status: %(cluster_status)s, '
'stack_id: %(stack_id)s, '
'reason: %(reason)s') %
{'cluster_status': stack.stack_status,
'stack_id': self.cluster.stack_id,
'reason': self.cluster.status_reason})
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