def get_metrics(self, uuids):
if not uuids:
return []
session = self.engine_facade.get_session()
query = session.query(Metric).filter(Metric.id.in_(uuids)).options(
sqlalchemy.orm.joinedload('resource'))
metrics = list(query.all())
session.expunge_all()
return metrics
def get_resource(self, resource_type, resource_id, with_metrics=False):
resource_cls = self._resource_type_to_class(resource_type)
session = self.engine_facade.get_session()
q = session.query(
resource_cls).filter(
resource_cls.id == resource_id)
if with_metrics:
q = q.options(sqlalchemy.orm.joinedload('metrics'))
r = q.first()
session.expunge_all()
return r
def get_metrics(self, uuids, active_only=True, with_resource=False):
if not uuids:
return []
session = self.engine_facade.get_session()
query = session.query(Metric).filter(Metric.id.in_(uuids))
if active_only:
query = query.filter(Metric.status == 'active')
if with_resource:
query = query.options(sqlalchemy.orm.joinedload('resource'))
metrics = list(query.all())
session.expunge_all()
return metrics
def create_archive_policy_rule(self, name, metric_pattern,
archive_policy_name):
apr = ArchivePolicyRule(
name=name,
archive_policy_name=archive_policy_name,
metric_pattern=metric_pattern
)
session = self.engine_facade.get_session()
session.add(apr)
try:
session.flush()
except exception.DBDuplicateEntry:
raise indexer.ArchivePolicyRuleAlreadyExists(name)
session.expunge_all()
return apr
def create_archive_policy(self, archive_policy):
ap = ArchivePolicy(
name=archive_policy.name,
back_window=archive_policy.back_window,
definition=archive_policy.definition,
aggregation_methods=list(archive_policy.aggregation_methods),
)
session = self.engine_facade.get_session()
session.add(ap)
try:
session.flush()
except exception.DBDuplicateEntry:
raise indexer.ArchivePolicyAlreadyExists(archive_policy.name)
session.expunge_all()
return ap
def list_metrics(self, user_id=None, project_id=None, details=False,
**kwargs):
session = self.engine_facade.get_session()
q = session.query(Metric).filter(Metric.status == 'active')
if user_id is not None:
q = q.filter(Metric.created_by_user_id == user_id)
if project_id is not None:
q = q.filter(Metric.created_by_project_id == project_id)
for attr in kwargs:
q = q.filter(getattr(Metric, attr) == kwargs[attr])
if details:
q = q.options(sqlalchemy.orm.joinedload('resource'))
metrics = list(q.all())
session.expunge_all()
return metrics
def create_metric(self, id, created_by_user_id, created_by_project_id,
archive_policy_name,
name=None, resource_id=None):
m = Metric(id=id,
created_by_user_id=created_by_user_id,
created_by_project_id=created_by_project_id,
archive_policy_name=archive_policy_name,
name=name,
resource_id=resource_id)
session = self.engine_facade.get_session()
session.add(m)
try:
session.flush()
except exception.DBReferenceError as e:
if (e.constraint ==
'fk_metric_archive_policy_name_archive_policy_name'):
raise indexer.NoSuchArchivePolicy(archive_policy_name)
raise
session.expunge_all()
return m
def create_resource(self, resource_type, id,
created_by_user_id, created_by_project_id,
user_id=None, project_id=None,
started_at=None, ended_at=None, metrics=None,
**kwargs):
resource_cls = self._resource_type_to_class(resource_type)
if (started_at is not None
and ended_at is not None
and started_at > ended_at):
raise ValueError("Start timestamp cannot be after end timestamp")
r = resource_cls(
id=id,
type=resource_type,
created_by_user_id=created_by_user_id,
created_by_project_id=created_by_project_id,
user_id=user_id,
project_id=project_id,
started_at=started_at,
ended_at=ended_at,
**kwargs)
session = self.engine_facade.get_session()
with session.begin():
session.add(r)
try:
session.flush()
except exception.DBDuplicateEntry:
raise indexer.ResourceAlreadyExists(id)
except exception.DBReferenceError as ex:
raise indexer.ResourceValueError(r.type,
ex.key,
getattr(r, ex.key))
if metrics is not None:
self._set_metrics_for_resource(session, r, metrics)
# NOTE(jd) Force load of metrics :)
r.metrics
session.expunge_all()
return r
def list_resources(self, resource_type='generic',
attribute_filter=None,
details=False,
history=False,
limit=None,
marker=None,
sorts=None):
sorts = sorts or []
session = self.engine_facade.get_session()
if history:
target_cls = self._get_history_result_mapper(resource_type)
else:
target_cls = self._resource_type_to_class(resource_type)
q = session.query(target_cls)
if attribute_filter:
engine = self.engine_facade.get_engine()
try:
f = QueryTransformer.build_filter(engine.dialect.name,
target_cls,
attribute_filter)
except indexer.QueryAttributeError as e:
# NOTE(jd) The QueryAttributeError does not know about
# resource_type, so convert it
raise indexer.ResourceAttributeError(resource_type,
e.attribute)
q = q.filter(f)
# transform the api-wg representation to the oslo.db one
sort_keys = []
sort_dirs = []
for sort in sorts:
sort_key, __, sort_dir = sort.partition(":")
sort_keys.append(sort_key.strip())
sort_dirs.append(sort_dir or 'asc')
# paginate_query require at list one uniq column
if 'id' not in sort_keys:
sort_keys.append('id')
sort_dirs.append('asc')
if marker:
resource_marker = self.get_resource(resource_type, marker)
if resource_marker is None:
raise indexer.InvalidPagination(
"Invalid marker: `%s'" % marker)
else:
resource_marker = None
try:
q = oslo_db_utils.paginate_query(q, target_cls, limit=limit,
sort_keys=sort_keys,
marker=resource_marker,
sort_dirs=sort_dirs)
except (exception.InvalidSortKey, ValueError) as e:
raise indexer.InvalidPagination(e)
# Always include metrics
q = q.options(sqlalchemy.orm.joinedload("metrics"))
all_resources = q.all()
if details:
grouped_by_type = itertools.groupby(
all_resources, lambda r: (r.revision != -1, r.type))
all_resources = []
for (is_history, type), resources in grouped_by_type:
if type == 'generic':
# No need for a second query
all_resources.extend(resources)
else:
if is_history:
target_cls = self._resource_type_to_class(type,
"history")
f = target_cls.revision.in_(
[r.revision for r in resources])
else:
target_cls = self._resource_type_to_class(type)
f = target_cls.id.in_([r.id for r in resources])
q = session.query(target_cls).filter(f)
# Always include metrics
q = q.options(sqlalchemy.orm.joinedload('metrics'))
all_resources.extend(q.all())
session.expunge_all()
return all_resources
def update_resource(self, resource_type,
resource_id, ended_at=_marker, metrics=_marker,
append_metrics=False,
**kwargs):
now = utils.utcnow()
resource_cls = self._resource_type_to_class(resource_type)
resource_history_cls = self._resource_type_to_class(resource_type,
"history")
session = self.engine_facade.get_session()
try:
with session.begin():
# NOTE(sileht): We use FOR UPDATE that is not galera friendly,
# but they are no other way to cleanly patch a resource and
# store the history that safe when two concurrent calls are
# done.
q = session.query(resource_cls).filter(
resource_cls.id == resource_id).with_for_update()
r = q.first()
if r is None:
raise indexer.NoSuchResource(resource_id)
# Build history
rh = resource_history_cls()
for col in sqlalchemy.inspect(resource_cls).columns:
setattr(rh, col.name, getattr(r, col.name))
rh.revision_end = now
session.add(rh)
# Update the resource
if ended_at is not _marker:
# NOTE(jd) MySQL does not honor checks. I hate it.
engine = self.engine_facade.get_engine()
if engine.dialect.name == "mysql":
if r.started_at is not None and ended_at is not None:
if r.started_at > ended_at:
raise indexer.ResourceValueError(
resource_type, "ended_at", ended_at)
r.ended_at = ended_at
r.revision_start = now
if kwargs:
for attribute, value in six.iteritems(kwargs):
if hasattr(r, attribute):
setattr(r, attribute, value)
else:
raise indexer.ResourceAttributeError(
r.type, attribute)
if metrics is not _marker:
if not append_metrics:
session.query(Metric).filter(
Metric.resource_id == resource_id,
Metric.status == 'active').update(
{"resource_id": None})
self._set_metrics_for_resource(session, r, metrics)
except exception.DBConstraintError as e:
if e.check_name == "ck_started_before_ended":
raise indexer.ResourceValueError(
resource_type, "ended_at", ended_at)
raise
# NOTE(jd) Force load of metrics – do it outside the session!
r.metrics
session.expunge_all()
return r
def get_archive_policy_rule(self, name):
session = self.engine_facade.get_session()
ap = session.query(ArchivePolicyRule).get(name)
session.expunge_all()
return ap
def list_archive_policy_rules(self):
session = self.engine_facade.get_session()
aps = session.query(ArchivePolicyRule).all()
session.expunge_all()
return aps
def list_archive_policy_rules(self):
session = self.engine_facade.get_session()
aps = session.query(ArchivePolicyRule).order_by(
ArchivePolicyRule.metric_pattern.desc()).all()
session.expunge_all()
return aps
