def test_service_get_by_args(self):
values = [{"host": "host1", "binary": "a"}, {"host": "host2", "binary": "b"}]
services = [self._create_service(vals) for vals in values]
service1 = db.service_get_by_args(self.ctxt, "host1", "a")
self._assertEqualObjects(services[0], service1)
service2 = db.service_get_by_args(self.ctxt, "host2", "b")
self._assertEqualObjects(services[1], service2)
def test_service_get_by_args(self):
values = [
{'host': 'host1', 'binary': 'a'},
{'host': 'host2', 'binary': 'b'}
]
services = [self._create_service(vals) for vals in values]
service1 = db.service_get_by_args(self.ctxt, 'host1', 'a')
self._assertEqualObjects(services[0], service1)
service2 = db.service_get_by_args(self.ctxt, 'host2', 'b')
self._assertEqualObjects(services[1], service2)
def update(self, req, id, body):
"""Enable/Disable scheduling for a service"""
context = req.environ['cinder.context']
authorize(context)
if id == "enable":
disabled = False
elif id == "disable":
disabled = True
else:
raise webob.exc.HTTPNotFound("Unknown action")
try:
host = body['host']
service = body['service']
except (TypeError, KeyError):
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, service)
if not svc:
raise webob.exc.HTTPNotFound('Unknown service')
db.service_update(context, svc['id'], {'disabled': disabled})
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound("service not found")
return {'host': host, 'service': service, 'disabled': disabled}
def schedule_create_volume(self, context, volume_id, *_args, **_kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_ref = db.volume_get(context, volume_id)
availability_zone = volume_ref.get("availability_zone")
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(":")
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, "cinder-volume")
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
driver.cast_to_volume_host(context, host, "create_volume", volume_id=volume_id, **_kwargs)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results if service["availability_zone"] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_ref["size"] > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service["disabled"]:
driver.cast_to_volume_host(context, service["host"], "create_volume", volume_id=volume_id, **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def schedule_create_volume(self, context, volume_id, **_kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_ref = db.volume_get(context, volume_id)
availability_zone = volume_ref.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'cinder-volume')
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
driver.cast_to_volume_host(context, host, 'create_volume',
volume_id=volume_id, **_kwargs)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results
if service['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_ref['size'] > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
driver.cast_to_volume_host(context, service['host'],
'create_volume', volume_id=volume_id, **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def update(self, req, id, body):
"""Enable/Disable scheduling for a service"""
context = req.environ['cinder.context']
authorize(context)
if id == "enable":
disabled = False
elif id == "disable":
disabled = True
else:
raise webob.exc.HTTPNotFound("Unknown action")
try:
host = body['host']
service = body['service']
except (TypeError, KeyError):
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, service)
if not svc:
raise webob.exc.HTTPNotFound('Unknown service')
db.service_update(context, svc['id'], {'disabled': disabled})
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound("service not found")
return {'host': host, 'service': service, 'disabled': disabled}
def update(self, req, id, body):
"""Enable/Disable scheduling for a service."""
context = req.environ['cinder.context']
authorize(context, action='update')
ext_loaded = self.ext_mgr.is_loaded('os-extended-services')
ret_val = {}
if id == "enable":
disabled = False
status = "enabled"
if ext_loaded:
ret_val['disabled_reason'] = None
elif (id == "disable" or (id == "disable-log-reason" and ext_loaded)):
disabled = True
status = "disabled"
else:
raise webob.exc.HTTPNotFound(explanation=_("Unknown action"))
try:
host = body['host']
except (TypeError, KeyError):
msg = _("Missing required element 'host' in request body.")
raise webob.exc.HTTPBadRequest(explanation=msg)
ret_val['disabled'] = disabled
if id == "disable-log-reason" and ext_loaded:
reason = body.get('disabled_reason')
if not self._is_valid_as_reason(reason):
msg = _('Disabled reason contains invalid characters '
'or is too long')
raise webob.exc.HTTPBadRequest(explanation=msg)
ret_val['disabled_reason'] = reason
# NOTE(uni): deprecating service request key, binary takes precedence
# Still keeping service key here for API compatibility sake.
service = body.get('service', '')
binary = body.get('binary', '')
binary_key = binary or service
if not binary_key:
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, binary_key)
if not svc:
raise webob.exc.HTTPNotFound(explanation=_('Unknown service'))
db.service_update(context, svc['id'], ret_val)
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound(explanation=_("service not found"))
ret_val.update({
'host': host,
'service': service,
'binary': binary,
'status': status
})
return ret_val
def update(self, req, id, body):
"""Enable/Disable scheduling for a service."""
context = req.environ['cinder.context']
authorize(context)
ext_loaded = self.ext_mgr.is_loaded('os-extended-services')
ret_val = {}
if id == "enable":
disabled = False
status = "enabled"
if ext_loaded:
ret_val['disabled_reason'] = None
elif (id == "disable" or
(id == "disable-log-reason" and ext_loaded)):
disabled = True
status = "disabled"
else:
raise webob.exc.HTTPNotFound(explanation=_("Unknown action"))
try:
host = body['host']
except (TypeError, KeyError):
raise webob.exc.HTTPBadRequest()
ret_val['disabled'] = disabled
if id == "disable-log-reason" and ext_loaded:
reason = body.get('disabled_reason')
if not self._is_valid_as_reason(reason):
msg = _('Disabled reason contains invalid characters '
'or is too long')
raise webob.exc.HTTPBadRequest(explanation=msg)
ret_val['disabled_reason'] = reason
# NOTE(uni): deprecating service request key, binary takes precedence
# Still keeping service key here for API compatibility sake.
service = body.get('service', '')
binary = body.get('binary', '')
binary_key = binary or service
if not binary_key:
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, binary_key)
if not svc:
raise webob.exc.HTTPNotFound(explanation=_('Unknown service'))
db.service_update(context, svc['id'], ret_val)
except exception.HostBinaryNotFound:
raise webob.exc.HTTPNotFound(explanation=_("host or binary not found"))
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound(explanation=_("service not found"))
ret_val.update({'host': host, 'service': service,
'binary': binary, 'status': status})
return ret_val
def schedule_create_volume(self, context, request_spec, filter_properties):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
topic = CONF.volume_topic
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
updated_volume = driver.volume_update_db(context, volume_id, host)
self.volume_rpcapi.create_volume(context,
updated_volume,
host,
request_spec,
filter_properties,
snapshot_id=snapshot_id,
image_id=image_id)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(s, gigs) for (s, gigs) in results
if s['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_size > CONF.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
updated_volume = driver.volume_update_db(
context, volume_id, service['host'])
self.volume_rpcapi.create_volume(context,
updated_volume,
service['host'],
request_spec,
filter_properties,
snapshot_id=snapshot_id,
image_id=image_id)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def update(self, req, id, body):
"""Enable/Disable scheduling for a service."""
context = req.environ["cinder.context"]
authorize(context)
ext_loaded = self.ext_mgr.is_loaded("os-extended-services")
ret_val = {}
if id == "enable":
disabled = False
status = "enabled"
if ext_loaded:
ret_val["disabled_reason"] = None
elif id == "disable" or (id == "disable-log-reason" and ext_loaded):
disabled = True
status = "disabled"
else:
raise webob.exc.HTTPNotFound(explanation=_("Unknown action"))
try:
host = body["host"]
except (TypeError, KeyError):
msg = _("Missing required element 'host' in request body.")
raise webob.exc.HTTPBadRequest(explanation=msg)
ret_val["disabled"] = disabled
if id == "disable-log-reason" and ext_loaded:
reason = body.get("disabled_reason")
if not self._is_valid_as_reason(reason):
msg = _("Disabled reason contains invalid characters " "or is too long")
raise webob.exc.HTTPBadRequest(explanation=msg)
ret_val["disabled_reason"] = reason
# NOTE(uni): deprecating service request key, binary takes precedence
# Still keeping service key here for API compatibility sake.
service = body.get("service", "")
binary = body.get("binary", "")
binary_key = binary or service
if not binary_key:
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, binary_key)
if not svc:
raise webob.exc.HTTPNotFound(explanation=_("Unknown service"))
db.service_update(context, svc["id"], ret_val)
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound(explanation=_("service not found"))
ret_val.update({"host": host, "service": service, "binary": binary, "status": status})
return ret_val
def start(self):
vcs_string = version.version_string_with_vcs()
LOG.audit(_('Starting %(topic)s node (version %(vcs_string)s)'),
{'topic': self.topic, 'vcs_string': vcs_string})
utils.cleanup_file_locks()
rpc.register_opts(FLAGS)
self.manager.init_host()
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
service_ref = db.service_get_by_args(ctxt,
self.host,
self.binary)
self.service_id = service_ref['id']
except exception.NotFound:
self._create_service_ref(ctxt)
if 'cinder-compute' == self.binary:
self.manager.update_available_resource(ctxt)
self.conn = rpc.create_connection(new=True)
LOG.debug(_("Creating Consumer connection for Service %s") %
self.topic)
# Share this same connection for these Consumers
self.conn.create_consumer(self.topic, self, fanout=False)
node_topic = '%s.%s' % (self.topic, self.host)
self.conn.create_consumer(node_topic, self, fanout=False)
self.conn.create_consumer(self.topic, self, fanout=True)
# Consume from all consumers in a thread
self.conn.consume_in_thread()
if self.report_interval:
pulse = utils.LoopingCall(self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = utils.LoopingCall(self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def remove(self, binary, host_name):
"""Completely removes a service."""
ctxt = context.get_admin_context()
try:
svc = db.service_get_by_args(ctxt, host_name, binary)
db.service_destroy(ctxt, svc['id'])
except exception.HostBinaryNotFound as e:
print(_("Host not found. Failed to remove %(service)s"
" on %(host)s.") %
{'service': binary, 'host': host_name})
print (u"%s" % e.args)
return 2
print(_("Service %(service)s on host %(host)s removed.") %
{'service': binary, 'host': host_name})
def remove(self, binary, host_name):
"""Completely removes a service."""
ctxt = context.get_admin_context()
try:
svc = db.service_get_by_args(ctxt, host_name, binary)
db.service_destroy(ctxt, svc['id'])
except exception.HostBinaryNotFound as e:
print(_("Host not found. Failed to remove %(service)s"
" on %(host)s.") %
{'service': binary, 'host': host_name})
print (u"%s" % e.args)
return 2
print(_("Service %(service)s on host %(host)s removed.") %
{'service': binary, 'host': host_name})
def start(self):
version_string = version.version_string()
LOG.audit(_('Starting %(topic)s node (version %(version_string)s)'),
{'topic': self.topic, 'version_string': version_string})
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
service_ref = db.service_get_by_args(ctxt,
self.host,
self.binary)
self.service_id = service_ref['id']
except exception.NotFound:
self._create_service_ref(ctxt)
self.conn = rpc.create_connection(new=True)
LOG.debug(_("Creating Consumer connection for Service %s") %
self.topic)
rpc_dispatcher = self.manager.create_rpc_dispatcher()
# Share this same connection for these Consumers
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=False)
node_topic = '%s:%s' % (self.topic, self.host)
self.conn.create_consumer(node_topic, rpc_dispatcher, fanout=False)
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=True)
# Consume from all consumers in a thread
self.conn.consume_in_thread()
self.manager.init_host()
if self.report_interval:
pulse = utils.LoopingCall(self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = utils.LoopingCall(self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def start(self):
version_string = version.version_string()
LOG.audit(_('Starting %(topic)s node (version %(version_string)s)'), {
'topic': self.topic,
'version_string': version_string
})
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
service_ref = db.service_get_by_args(ctxt, self.host, self.binary)
self.service_id = service_ref['id']
except exception.NotFound:
self._create_service_ref(ctxt)
self.conn = rpc.create_connection(new=True)
LOG.debug(
_("Creating Consumer connection for Service %s") % self.topic)
rpc_dispatcher = self.manager.create_rpc_dispatcher()
# Share this same connection for these Consumers
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=False)
node_topic = '%s:%s' % (self.topic, self.host)
self.conn.create_consumer(node_topic, rpc_dispatcher, fanout=False)
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=True)
# Consume from all consumers in a thread
self.conn.consume_in_thread()
self.manager.init_host()
if self.report_interval:
pulse = utils.LoopingCall(self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = utils.LoopingCall(self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def schedule_create_volume(self, context, request_spec, filter_properties):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
topic = FLAGS.volume_topic
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
updated_volume = driver.volume_update_db(context, volume_id, host)
self.volume_rpcapi.create_volume(context,
updated_volume,
host,
snapshot_id,
image_id)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results
if service['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_size > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
updated_volume = driver.volume_update_db(context, volume_id,
service['host'])
self.volume_rpcapi.create_volume(context,
updated_volume,
service['host'],
snapshot_id,
image_id)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def start(self):
version_string = version.version_string()
LOG.info(_LI('Starting %(topic)s node (version %(version_string)s)'),
{'topic': self.topic, 'version_string': version_string})
self.model_disconnected = False
self.manager.init_host()
ctxt = context.get_admin_context()
try:
service_ref = db.service_get_by_args(ctxt,
self.host,
self.binary)
self.service_id = service_ref['id']
except exception.NotFound:
self._create_service_ref(ctxt)
LOG.debug("Creating RPC server for service %s", self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
endpoints = [self.manager]
endpoints.extend(self.manager.additional_endpoints)
serializer = objects_base.CinderObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
self.manager.init_host_with_rpc()
if self.report_interval:
pulse = loopingcall.FixedIntervalLoopingCall(
self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = loopingcall.FixedIntervalLoopingCall(
self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def start(self):
version_string = version.version_string()
LOG.info(_LI('Starting %(topic)s node (version %(version_string)s)'),
{'topic': self.topic, 'version_string': version_string})
self.model_disconnected = False
self.manager.init_host()
ctxt = context.get_admin_context()
try:
service_ref = db.service_get_by_args(ctxt,
self.host,
self.binary)
self.service_id = service_ref['id']
except exception.NotFound:
self._create_service_ref(ctxt)
LOG.debug("Creating RPC server for service %s", self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
endpoints = [self.manager]
endpoints.extend(self.manager.additional_endpoints)
serializer = objects_base.CinderObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
self.manager.init_host_with_rpc()
if self.report_interval:
pulse = loopingcall.FixedIntervalLoopingCall(
self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = loopingcall.FixedIntervalLoopingCall(
self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def update(self, req, id, body):
"""Enable/Disable scheduling for a service"""
context = req.environ['cinder.context']
authorize(context)
if id == "enable":
disabled = False
elif id == "disable":
disabled = True
else:
raise webob.exc.HTTPNotFound("Unknown action")
try:
host = body['host']
except (TypeError, KeyError):
raise webob.exc.HTTPBadRequest()
# NOTE(uni): deprecating service request key, binary takes precedence
# Still keeping service key here for API compatibility sake.
service = body.get('service', '')
binary = body.get('binary', '')
binary_key = binary or service
if not binary_key:
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, binary_key)
if not svc:
raise webob.exc.HTTPNotFound('Unknown service')
db.service_update(context, svc['id'], {'disabled': disabled})
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound("service not found")
status = id + 'd'
return {
'host': host,
'service': service,
'disabled': disabled,
'binary': binary,
'status': status
}
def update(self, req, id, body):
"""Enable/Disable scheduling for a service."""
context = req.environ['cinder.context']
authorize(context)
if id == "enable":
disabled = False
elif id == "disable":
disabled = True
else:
raise webob.exc.HTTPNotFound("Unknown action")
try:
host = body['host']
except (TypeError, KeyError):
raise webob.exc.HTTPBadRequest()
# NOTE(uni): deprecating service request key, binary takes precedence
# Still keeping service key here for API compatibility sake.
service = body.get('service', '')
binary = body.get('binary', '')
binary_key = binary or service
if not binary_key:
raise webob.exc.HTTPBadRequest()
try:
svc = db.service_get_by_args(context, host, binary_key)
if not svc:
raise webob.exc.HTTPNotFound('Unknown service')
db.service_update(context, svc['id'], {'disabled': disabled})
except exception.ServiceNotFound:
raise webob.exc.HTTPNotFound("service not found")
status = id + 'd'
return {'host': host,
'service': service,
'disabled': disabled,
'binary': binary,
'status': status}
def _get_weighted_candidates(self, context, topic, request_spec, **kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
filter_properties = kwargs.get('filter_properties', {})
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
return [host]
candidates = []
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(s, gigs) for (s, gigs) in results
if s['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
no_skip = service['host'] != filter_properties.get('vol_exists_on')
if no_skip and volume_gigabytes + volume_size > CONF.max_gigabytes:
continue
if utils.service_is_up(service) and not service['disabled']:
candidates.append(service['host'])
if candidates:
return candidates
else:
msg = _("No service with adequate space or no service running")
raise exception.NoValidHost(reason=msg)
def _schedule_instance(self, context, instance_opts, *_args, **_kwargs):
"""Picks a host that is up and has the fewest running instances."""
elevated = context.elevated()
availability_zone = instance_opts.get('availability_zone')
zone, host = FLAGS.default_schedule_zone, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'cinder-compute')
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
return host
results = db.service_get_all_compute_sorted(elevated)
in_isolation = instance_opts['image_ref'] in FLAGS.isolated_images
check_cores = not in_isolation or not FLAGS.skip_isolated_core_check
if zone:
results = [(service, cores) for (service, cores) in results
if service['availability_zone'] == zone]
for result in results:
(service, instance_cores) = result
if in_isolation and service['host'] not in FLAGS.isolated_hosts:
# isloated images run on isolated hosts
continue
if service['host'] in FLAGS.isolated_hosts and not in_isolation:
# images that aren't isolated only run on general hosts
continue
if (check_cores and
instance_cores + instance_opts['vcpus'] > FLAGS.max_cores):
msg = _("Not enough allocatable CPU cores remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
return service['host']
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def get_by_args(cls, context, host, binary_key):
db_service = db.service_get_by_args(context, host, binary_key)
return cls._from_db_object(context, cls(context), db_service)
