def get_weight_multiplier(host_state, multiplier_name, multiplier_config):
"""Given a HostState object, multplier_type name and multiplier_config,
returns the weight multiplier.
It reads the "multiplier_name" from "aggregate metadata" in host_state
to override the multiplier_config. If the aggregate metadata doesn't
contain the multiplier_name, the multiplier_config will be returned
directly.
:param host_state: The HostState object, which contains aggregate metadata
:param multiplier_name: The weight multiplier name, like
"cpu_weight_multiplier".
:param multiplier_config: The weight multiplier configuration value
"""
aggregate_vals = filters_utils.aggregate_values_from_key(
host_state, multiplier_name)
try:
value = filters_utils.validate_num_values(aggregate_vals,
multiplier_config,
cast_to=float)
except ValueError as e:
LOG.warning("Could not decode '%(name)s' weight multiplier: %(exce)s",
{
'exce': e,
'name': multiplier_name
})
value = multiplier_config
return value
def get_weight_multiplier(host_state, multiplier_name, multiplier_config):
"""Given a HostState object, multplier_type name and multiplier_config,
returns the weight multiplier.
It reads the "multiplier_name" from "aggregate metadata" in host_state
to override the multiplier_config. If the aggregate metadata doesn't
contain the multiplier_name, the multiplier_config will be returned
directly.
:param host_state: The HostState object, which contains aggregate metadata
:param multiplier_name: The weight multiplier name, like
"cpu_weight_multiplier".
:param multiplier_config: The weight multiplier configuration value
"""
aggregate_vals = filters_utils.aggregate_values_from_key(host_state,
multiplier_name)
try:
value = filters_utils.validate_num_values(
aggregate_vals, multiplier_config, cast_to=float)
except ValueError as e:
LOG.warning("Could not decode '%(name)s' weight multiplier: %(exce)s",
{'exce': e, 'name': multiplier_name})
value = multiplier_config
return value
def _get_max_io_ops_per_host(self, host_state, filter_properties):
aggregate_vals = utils.aggregate_values_from_key(host_state, "max_io_ops_per_host")
try:
value = utils.validate_num_values(aggregate_vals, CONF.max_io_ops_per_host, cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_io_ops_per_host: '%s'"), e)
value = CONF.max_io_ops_per_host
return value
def _get_max_instances_per_host(self, host_state, spec_obj):
max_instances_per_host = CONF.filter_scheduler.max_instances_per_host
aggregate_vals = utils.aggregate_values_from_key(host_state, "max_instances_per_host")
try:
value = utils.validate_num_values(aggregate_vals, max_instances_per_host, cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_instances_per_host: '%s'"), e)
value = max_instances_per_host
return value
def _get_cpu_allocation_ratio(self, host_state, spec_obj):
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'cpu_allocation_ratio')
try:
ratio = utils.validate_num_values(
aggregate_vals, host_state.cpu_allocation_ratio, cast_to=float)
except ValueError as e:
LOG.warning("Could not decode cpu_allocation_ratio: '%s'", e)
ratio = host_state.cpu_allocation_ratio
return ratio
def _get_cpu_allocation_ratio(self, host_state, filter_properties):
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'cpu_allocation_ratio')
try:
ratio = utils.validate_num_values(
aggregate_vals, CONF.cpu_allocation_ratio, cast_to=float)
except ValueError as e:
LOG.warning(_LW("Could not decode cpu_allocation_ratio: '%s'"), e)
ratio = CONF.cpu_allocation_ratio
return ratio
def _get_disk_allocation_ratio(self, host_state, filter_properties):
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'disk_allocation_ratio')
try:
ratio = utils.validate_num_values(
aggregate_vals, CONF.disk_allocation_ratio, cast_to=float)
except ValueError as e:
LOG.warning(_LW("Could not decode disk_allocation_ratio: '%s'"), e)
ratio = CONF.disk_allocation_ratio
return ratio
def _get_max_io_ops_per_host(self, host_state, filter_properties):
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'max_io_ops_per_host')
try:
value = utils.validate_num_values(
aggregate_vals, CONF.max_io_ops_per_host, cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_io_ops_per_host: '%s'"), e)
value = CONF.max_io_ops_per_host
return value
def _get_max_io_ops_per_host(self, host_state, spec_obj):
max_io_ops_per_host = CONF.filter_scheduler.max_io_ops_per_host
aggregate_vals = utils.aggregate_values_from_key(
host_state, 'max_io_ops_per_host')
try:
value = utils.validate_num_values(aggregate_vals,
max_io_ops_per_host,
cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_io_ops_per_host: '%s'"), e)
value = max_io_ops_per_host
return value
def _get_disk_allocation_ratio(self, host_state, filter_properties):
# TODO(uni): DB query in filter is a performance hit, especially for
# system with lots of hosts. Will need a general solution here to fix
# all filters with aggregate DB call things.
aggregate_vals = utils.aggregate_values_from_db(
filter_properties["context"], host_state.host, "disk_allocation_ratio"
)
try:
ratio = utils.validate_num_values(aggregate_vals, CONF.disk_allocation_ratio, cast_to=float)
except ValueError as e:
LOG.warning(_LW("Could not decode disk_allocation_ratio: '%s'"), e)
ratio = CONF.disk_allocation_ratio
return ratio
def _get_cpu_allocation_ratio(self, host_state, filter_properties):
# TODO(uni): DB query in filter is a performance hit, especially for
# system with lots of hosts. Will need a general solution here to fix
# all filters with aggregate DB call things.
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'cpu_allocation_ratio')
try:
ratio = utils.validate_num_values(
aggregate_vals, CONF.cpu_allocation_ratio, cast_to=float)
except ValueError as e:
LOG.warning(_LW("Could not decode cpu_allocation_ratio: '%s'"), e)
ratio = CONF.cpu_allocation_ratio
return ratio
def _get_max_io_ops_per_host(self, host_state, filter_properties):
# TODO(uni): DB query in filter is a performance hit, especially for
# system with lots of hosts. Will need a general solution here to fix
# all filters with aggregate DB call things.
aggregate_vals = utils.aggregate_values_from_key(
host_state, 'max_io_ops_per_host')
try:
value = utils.validate_num_values(aggregate_vals,
CONF.max_io_ops_per_host,
cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_io_ops_per_host: '%s'"), e)
value = CONF.max_io_ops_per_host
return value
def _get_max_io_ops_per_host(self, host_state, filter_properties):
# TODO(uni): DB query in filter is a performance hit, especially for
# system with lots of hosts. Will need a general solution here to fix
# all filters with aggregate DB call things.
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'max_io_ops_per_host')
try:
value = utils.validate_num_values(
aggregate_vals, CONF.max_io_ops_per_host, cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_io_ops_per_host: '%s'"), e)
value = CONF.max_io_ops_per_host
return value
def _get_max_instances_per_host(self, host_state, spec_obj):
max_instances_per_host = CONF.filter_scheduler.max_instances_per_host
# TODO(sfinucan): Remove this warning when the named config options
# gains a 'min' parameter.
if max_instances_per_host < 1:
LOG.warning(_LW('Future versions of nova will restrict the '
'"filter_scheduler.max_instances_per_host" config option to '
'values >=0. Update your configuration file to mitigate '
'future upgrade issues.'))
aggregate_vals = utils.aggregate_values_from_key(
host_state,
'max_instances_per_host')
try:
value = utils.validate_num_values(
aggregate_vals, max_instances_per_host, cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_instances_per_host: '%s'"),
e)
value = max_instances_per_host
return value
def _get_max_instances_per_host(self, host_state, spec_obj):
max_instances_per_host = CONF.filter_scheduler.max_instances_per_host
# TODO(sfinucan): Remove this warning when the named config options
# gains a 'min' parameter.
if max_instances_per_host < 1:
LOG.warning(
_LW('Future versions of nova will restrict the '
'"filter_scheduler.max_instances_per_host" config option to '
'values >=0. Update your configuration file to mitigate '
'future upgrade issues.'))
aggregate_vals = utils.aggregate_values_from_key(
host_state, 'max_instances_per_host')
try:
value = utils.validate_num_values(aggregate_vals,
max_instances_per_host,
cast_to=int)
except ValueError as e:
LOG.warning(_LW("Could not decode max_instances_per_host: '%s'"),
e)
value = max_instances_per_host
return value
