def _store_unaggregated_timeseries(self, metrics_and_data, version=3):
"""Store unaggregated timeseries.
:param metrics_and_data: A list of (metric, serialized_data) tuples
:param version: Storage engine data format version
"""
utils.parallel_map(
utils.return_none_on_failure(
self._store_unaggregated_timeseries_unbatched),
((metric, data, version) for metric, data in metrics_and_data))
def add_measures_batch(self, metrics_and_measures):
"""Add a batch of measures for some metrics.
:param metrics_and_measures: A dict where keys are metric objects
and values are a list of
:py:class:`gnocchi.incoming.Measure`.
"""
utils.parallel_map(
self._store_new_measures,
((metric, self._encode_measures(measures))
for metric, measures in six.iteritems(metrics_and_measures)))
def add_measures_batch(self, metrics_and_measures):
"""Add a batch of measures for some metrics.
:param metrics_and_measures: A dict where keys
are metrics and value are measure.
"""
utils.parallel_map(
self._store_new_measures,
((metric, self._encode_measures(measures))
for metric, measures
in six.iteritems(metrics_and_measures)))
def _delete_metric_splits(self, metrics_keys_aggregations, version=3):
"""Delete splits of metrics.
:param metrics_keys_aggregations: A dict where keys are
`storage.Metric` and values are lists
of (key, aggregation) tuples.
"""
utils.parallel_map(
utils.return_none_on_failure(self._delete_metric_splits_unbatched),
((metric, key, aggregation)
for metric, keys_and_aggregations
in six.iteritems(metrics_keys_aggregations)
for key, aggregation in keys_and_aggregations))
def test_parallel_map_four(self):
utils.parallel_map.MAX_WORKERS = 4
starmap = itertools.starmap
with mock.patch("itertools.starmap") as sm:
sm.side_effect = starmap
self.assertEqual([1, 2, 3],
utils.parallel_map(lambda x: x, [[1], [2], [3]]))
sm.assert_not_called()
def _map_add_measures(bound_timeserie):
# NOTE (gordc): bound_timeserie is entire set of
# unaggregated measures matching largest
# granularity. the following takes only the points
# affected by new measures for specific granularity
tstamp = max(bound_timeserie.first, measures['timestamps'][0])
new_first_block_timestamp = bound_timeserie.first_block_timestamp()
computed_points['number'] = len(bound_timeserie)
for d in definition:
ts = bound_timeserie.group_serie(
d.granularity,
carbonara.round_timestamp(tstamp, d.granularity))
utils.parallel_map(
self._add_measures,
((aggregation, d, metric, ts,
current_first_block_timestamp, new_first_block_timestamp)
for aggregation in agg_methods))
def _store_metric_splits(self, metrics_keys_aggregations_data_offset,
version=3):
"""Store metric splits.
Store a bunch of splits for some metrics.
:param metrics_keys_aggregations_data_offset: A dict where keys are
`storage.Metric` and
values are a list of
(key, aggregation,
data, offset) tuples.
:param version: Storage engine format version.
"""
utils.parallel_map(
self._store_metric_splits_unbatched,
((metric, key, aggregation, data, offset, version)
for metric, keys_aggregations_data_offset
in six.iteritems(metrics_keys_aggregations_data_offset)
for key, aggregation, data, offset
in keys_aggregations_data_offset))
def _get_splits(self, metrics_aggregations_keys, version=3):
results = collections.defaultdict(
lambda: collections.defaultdict(list))
for metric, aggregation, split in utils.parallel_map(
lambda m, k, a, v: (m, a, self._get_splits_unbatched(m, k, a, v)), # noqa
((metric, key, aggregation, version)
for metric, aggregations_and_keys
in six.iteritems(metrics_aggregations_keys)
for aggregation, keys
in six.iteritems(aggregations_and_keys)
for key in keys)):
results[metric][aggregation].append(split)
return results
def _get_measures_timeserie(self,
metric,
aggregation,
granularity,
from_timestamp=None,
to_timestamp=None):
# Find the number of point
for d in metric.archive_policy.definition:
if d.granularity == granularity:
points = d.points
break
else:
raise GranularityDoesNotExist(metric, granularity)
all_keys = None
try:
all_keys = self._list_split_keys_for_metric(
metric, aggregation, granularity)
except MetricDoesNotExist:
for d in metric.archive_policy.definition:
if d.granularity == granularity:
return carbonara.AggregatedTimeSerie(
sampling=granularity,
aggregation_method=aggregation,
max_size=d.points)
raise GranularityDoesNotExist(metric, granularity)
if from_timestamp:
from_timestamp = carbonara.SplitKey.from_timestamp_and_sampling(
from_timestamp, granularity)
if to_timestamp:
to_timestamp = carbonara.SplitKey.from_timestamp_and_sampling(
to_timestamp, granularity)
timeseries = list(
filter(
lambda x: x is not None,
utils.parallel_map(
self._get_measures_and_unserialize,
((metric, key, aggregation) for key in sorted(all_keys)
if ((not from_timestamp or key >= from_timestamp) and (
not to_timestamp or key <= to_timestamp))))))
return carbonara.AggregatedTimeSerie.from_timeseries(
sampling=granularity,
aggregation_method=aggregation,
timeseries=timeseries,
max_size=points)
def _get_or_create_unaggregated_timeseries(self, metrics, version=3):
"""Get the unaggregated timeserie of metrics.
If the metrics does not exist, it is created.
:param metrics: A list of metrics.
:param version: The storage format version number.
"""
return dict(
six.moves.zip(
metrics,
utils.parallel_map(
utils.return_none_on_failure(
self._get_or_create_unaggregated_timeseries_unbatched),
((metric, version) for metric in metrics))))
def get_aggregated_measures(self, metric, aggregations,
from_timestamp=None, to_timestamp=None):
"""Get aggregated measures from a metric.
:param metric: The metric measured.
:param aggregations: The aggregations to retrieve.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
"""
keys = self._list_split_keys(metric, aggregations)
timeseries = utils.parallel_map(
self._get_measures_timeserie,
((metric, agg, keys[agg], from_timestamp, to_timestamp)
for agg in aggregations))
return {
agg: ts.fetch(from_timestamp, to_timestamp)
for agg, ts in six.moves.zip(aggregations, timeseries)
}
def get_measures(self,
metric,
from_timestamp=None,
to_timestamp=None,
aggregation='mean',
granularity=None,
resample=None):
"""Get a measure to a metric.
:param metric: The metric measured.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
:param aggregation: The type of aggregation to retrieve.
:param granularity: The granularity to retrieve.
:param resample: The granularity to resample to.
"""
if aggregation not in metric.archive_policy.aggregation_methods:
if granularity is None:
granularity = metric.archive_policy.definition[0].granularity
raise AggregationDoesNotExist(metric, aggregation, granularity)
if granularity is None:
agg_timeseries = utils.parallel_map(
self._get_measures_timeserie,
((metric, aggregation, ap.granularity, from_timestamp,
to_timestamp)
for ap in reversed(metric.archive_policy.definition)))
else:
agg_timeseries = [
self._get_measures_timeserie(metric, aggregation, granularity,
from_timestamp, to_timestamp)
]
if resample and granularity:
agg_timeseries = list(
map(lambda agg: agg.resample(resample), agg_timeseries))
return list(
itertools.chain(*[
ts.fetch(from_timestamp, to_timestamp) for ts in agg_timeseries
]))
def get_measures(self,
metric,
granularities,
from_timestamp=None,
to_timestamp=None,
aggregation='mean',
resample=None):
"""Get a measure to a metric.
:param metric: The metric measured.
:param granularities: The granularities to retrieve.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
:param aggregation: The type of aggregation to retrieve.
:param resample: The granularity to resample to.
"""
aggregations = []
for g in sorted(granularities, reverse=True):
agg = metric.archive_policy.get_aggregation(aggregation, g)
if agg is None:
raise AggregationDoesNotExist(metric, aggregation, g)
aggregations.append(agg)
agg_timeseries = utils.parallel_map(
self._get_measures_timeserie,
((metric, ag, from_timestamp, to_timestamp)
for ag in aggregations))
if resample:
agg_timeseries = list(
map(lambda agg: agg.resample(resample), agg_timeseries))
return list(
itertools.chain(*[
ts.fetch(from_timestamp, to_timestamp) for ts in agg_timeseries
]))
def search_value(self,
metrics,
query,
from_timestamp=None,
to_timestamp=None,
aggregation='mean',
granularity=None):
"""Search for an aggregated value that realizes a predicate.
:param metrics: The list of metrics to look into.
:param query: The query being sent.
:param from_timestamp: The timestamp to get the measure from.
:param to_timestamp: The timestamp to get the measure to.
:param aggregation: The type of aggregation to retrieve.
:param granularity: The granularity to retrieve.
"""
granularity = granularity or []
predicate = MeasureQuery(query)
results = utils.parallel_map(
self._find_measure,
[(metric, aggregation, gran, predicate, from_timestamp,
to_timestamp) for metric in metrics for gran in granularity or (
defin.granularity
for defin in metric.archive_policy.definition)])
result = collections.defaultdict(list)
for r in results:
for metric, metric_result in six.iteritems(r):
result[metric].extend(metric_result)
# Sort the result
for metric, r in six.iteritems(result):
# Sort by timestamp asc, granularity desc
r.sort(key=lambda t: (t[0], -t[1]))
return result
def get_measures(storage, references, operations,
from_timestamp=None, to_timestamp=None,
granularities=None, needed_overlap=100.0,
fill=None):
"""Get aggregated measures of multiple entities.
:param storage: The storage driver.
:param metrics_and_aggregations: List of metric+agg_method tuple
measured to aggregate.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
:param granularities: The granularities to retrieve.
:param fill: The value to use to fill in missing data in series.
"""
if granularities is None:
all_granularities = (
definition.granularity
for ref in references
for definition in ref.metric.archive_policy.definition
)
# granularities_in_common
granularities = [
g
for g, occurrence in six.iteritems(
collections.Counter(all_granularities))
if occurrence == len(references)
]
if not granularities:
raise exceptions.UnAggregableTimeseries(
list((ref.name, ref.aggregation)
for ref in references),
'No granularity match')
references_with_missing_granularity = []
for ref in references:
if (ref.aggregation not in
ref.metric.archive_policy.aggregation_methods):
raise gnocchi_storage.AggregationDoesNotExist(
ref.metric, ref.aggregation,
# Use the first granularity, that should be good enough since
# they are all missing anyway
ref.metric.archive_policy.definition[0].granularity)
available_granularities = [
d.granularity
for d in ref.metric.archive_policy.definition
]
for g in granularities:
if g not in available_granularities:
references_with_missing_granularity.append(
(ref.name, ref.aggregation, g))
break
if references_with_missing_granularity:
raise exceptions.UnAggregableTimeseries(
references_with_missing_granularity,
"Granularities are missing")
tss = utils.parallel_map(_get_measures_timeserie,
[(storage, ref, g, from_timestamp, to_timestamp)
for ref in references
for g in granularities])
return aggregated(tss, operations, from_timestamp, to_timestamp,
needed_overlap, fill)
def get_measures(storage,
references,
operations,
from_timestamp=None,
to_timestamp=None,
granularities=None,
needed_overlap=100.0,
fill=None):
"""Get aggregated measures of multiple entities.
:param storage: The storage driver.
:param metrics_and_aggregations: List of metric+agg_method tuple
measured to aggregate.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
:param granularities: The granularities to retrieve.
:param fill: The value to use to fill in missing data in series.
"""
if granularities is None:
all_granularities = (
definition.granularity for ref in references
for definition in ref.metric.archive_policy.definition)
# granularities_in_common
granularities = [
g for g, occurrence in six.iteritems(
collections.Counter(all_granularities))
if occurrence == len(references)
]
if not granularities:
raise exceptions.UnAggregableTimeseries(
list((ref.name, ref.aggregation) for ref in references),
'No granularity match')
references_with_missing_granularity = []
for ref in references:
if (ref.aggregation
not in ref.metric.archive_policy.aggregation_methods):
raise gnocchi_storage.AggregationDoesNotExist(
ref.metric,
ref.aggregation,
# Use the first granularity, that should be good enough since
# they are all missing anyway
ref.metric.archive_policy.definition[0].granularity)
available_granularities = [
d.granularity for d in ref.metric.archive_policy.definition
]
for g in granularities:
if g not in available_granularities:
references_with_missing_granularity.append(
(ref.name, ref.aggregation, g))
break
if references_with_missing_granularity:
raise exceptions.UnAggregableTimeseries(
references_with_missing_granularity, "Granularities are missing")
tss = utils.parallel_map(_get_measures_timeserie,
[(storage, ref, g, from_timestamp, to_timestamp)
for ref in references for g in granularities])
return aggregated(tss, operations, from_timestamp, to_timestamp,
needed_overlap, fill)
def get_measures(storage,
metrics_and_aggregations,
operations,
from_timestamp=None,
to_timestamp=None,
granularity=None,
needed_overlap=100.0,
fill=None,
ref_identifier="id"):
"""Get aggregated measures of multiple entities.
:param storage: The storage driver.
:param metrics_and_aggregations: List of metric+agg_method tuple
measured to aggregate.
:param from timestamp: The timestamp to get the measure from.
:param to timestamp: The timestamp to get the measure to.
:param granularity: The granularity to retrieve.
:param fill: The value to use to fill in missing data in series.
"""
references_with_missing_granularity = []
for (metric, aggregation) in metrics_and_aggregations:
if aggregation not in metric.archive_policy.aggregation_methods:
raise gnocchi_storage.AggregationDoesNotExist(metric, aggregation)
if granularity is not None:
for d in metric.archive_policy.definition:
if d.granularity == granularity:
break
else:
references_with_missing_granularity.append(
(getattr(metric, ref_identifier), aggregation))
if references_with_missing_granularity:
raise exceptions.UnAggregableTimeseries(
references_with_missing_granularity,
"granularity '%d' is missing" %
utils.timespan_total_seconds(granularity))
if granularity is None:
granularities = (definition.granularity
for (metric, aggregation) in metrics_and_aggregations
for definition in metric.archive_policy.definition)
granularities_in_common = [
g for g, occurrence in six.iteritems(
collections.Counter(granularities))
if occurrence == len(metrics_and_aggregations)
]
if not granularities_in_common:
raise exceptions.UnAggregableTimeseries(
list((str(getattr(m, ref_identifier)), a)
for (m, a) in metrics_and_aggregations),
'No granularity match')
else:
granularities_in_common = [granularity]
tss = utils.parallel_map(
_get_measures_timeserie,
[(storage, metric, aggregation, ref_identifier, g, from_timestamp,
to_timestamp) for (metric, aggregation) in metrics_and_aggregations
for g in granularities_in_common])
return aggregated(tss, operations, from_timestamp, to_timestamp,
needed_overlap, fill)
def test_parallel_map_four(self):
utils.parallel_map.NUM_WORKERS = 4
self.assertEqual([1, 2, 3],
utils.parallel_map(lambda x: x, [[1], [2], [3]]))
def _get_measures(self, metric, keys, aggregation, version=3):
return utils.parallel_map(self._get_measures_unbatched,
((metric, key, aggregation, version)
for key in keys))
def _delete_metric_splits(self, metric, keys_and_aggregations, version=3):
utils.parallel_map(
utils.return_none_on_failure(self._delete_metric_splits_unbatched),
((metric, key, aggregation)
for key, aggregation in keys_and_aggregations))
