def get_sample(self, meter_name, query ):
samples = ceilometer.sample_list(self.request, meter_name, query=query)
resources = []
sample_data = []
i = 0
for s in samples:
if s.resource_id not in resources:
resources.append(s.resource_id)
s.id = i
sample_data.append(s)
i += 1
return sample_data
def _get_previous_val(self, source, resource, limit_date):
date_object = datetime.strptime(limit_date, '%Y-%m-%d %H:%M:%S')
edge_date = date_object - timedelta(hours=1)
edge_date_str = edge_date.strftime('%Y-%m-%d %H:%M:%S')
query = [
{'field':'timestamp', 'op':'ge', 'value':edge_date_str},
{'field':'timestamp', 'op':'lt', 'value':limit_date},
{'field':'resource', 'op':'eq', 'value':resource}
]
sample_list = ceilometer.sample_list(self.request, source, query)
if len(sample_list)>0:
last = sample_list[-1]
return last.counter_volume
else:
return 0
def get(self, request, *args, **kwargs):
source = request.GET.get('sample', '')
date_from = request.GET.get('from', '')
date_to = request.GET.get('to', '')
resource = request.GET.get('resource', '')
query = []
rows = []
if date_from:
date_from = self._to_iso_time(date_from+' 00:00:00')
query.append({'field':'timestamp', 'op':'ge', 'value':date_from})
if date_to:
date_to = self._to_iso_time(date_to+" 23:59:59")
query.append({'field':'timestamp', 'op':'le', 'value':date_to})
samples = []
meter_type = ""
if source and resource:
query.append({'field':'resource', 'op':'eq', 'value':resource})
sample_list = ceilometer.sample_list(self.request, source, query)
previous = self._get_previous_val(source, resource, date_from)
for sample_data in sample_list:
current_volume = sample_data.counter_volume
# if sample is cumulative, substract previous val
meter_type = sample_data.counter_type
if sample_data.counter_type=="cumulative":
current_delta = current_volume - previous
previous = current_volume
if current_delta<0:
current_delta = current_volume
else:
current_delta = current_volume
samples.append([sample_data.timestamp[:19], current_delta])
# if requested period is too long, interpolate data, for cumulative metrics
if meter_type=="cumulative":
date_start_obj = datetime.strptime(date_from, "%Y-%m-%d %H:%M:%S")
date_end_obj = datetime.strptime(date_to, "%Y-%m-%d %H:%M:%S")
delta = (date_end_obj - date_start_obj).days
if delta>=365:
samples = map(to_days, samples)
samples = reduce_metrics(samples)
elif delta>=30:
# reduce metrics to hours
samples = map(to_hours, samples)
samples = reduce_metrics(samples)
else:
# add measures of 0 for start and end
samples.append([date_from.replace(" ", "T"), 0])
samples.append([date_to.replace(" ", "T"), 0])
# output csv
headers = ['date', 'value']
response = HttpResponse(mimetype='text/csv')
writer = csv.writer(response)
writer.writerow(headers)
for sample in samples:
writer.writerow(sample)
return response
def query_data_by_sample(request,
date_from,
date_to,
date_options,
group_by,
meter,
limit,
uuid,
period=None,
additional_query=None):
date_from, date_to = _calc_date_args(date_from, date_to, date_options)
unit = ""
if not period:
period = _calc_period(date_from, date_to)
if additional_query is None:
additional_query = []
if date_from:
additional_query += [{
'field': 'timestamp',
'op': 'ge',
'value': date_from
}]
if date_to:
additional_query += [{
'field': 'timestamp',
'op': 'le',
'value': date_to
}]
additional_query += [{'field': 'resource_id', 'op': 'like', 'value': uuid}]
# TODO(lsmola) replace this by logic implemented in I1 in bugs
# 1226479 and 1226482, this is just a quick fix for RC1
if group_by == "project":
try:
tenants, more = api.keystone.tenant_list(request,
domain=None,
paginate=False)
except Exception:
tenants = []
exceptions.handle(request, _('Unable to retrieve project list.'))
queries = {}
for tenant in tenants:
tenant_query = [{
"field": "project_id",
"op": "eq",
"value": tenant.id
}]
queries[tenant.name] = tenant_query
ceilometer_usage = ceilometer.CeilometerUsage(request)
resources = ceilometer_usage.resource_aggregates_with_statistics(
queries, [meter],
period=period,
stats_attr=None,
additional_query=additional_query)
else:
query = additional_query
def filter_by_meter_name(resource):
"""Function for filtering of the list of resources.
Will pick the right resources according to currently selected
meter.
"""
for link in resource.links:
if link['rel'] == meter:
# If resource has the currently chosen meter.
return True
return False
try:
ceilometer_usage = ceilometer.sample_list(request,
meter,
query,
limits=limit)
if not ceilometer_usage:
unit = ""
else:
unit = ceilometer_usage[0].counter_unit
# resources = ceilometer_usage.resources_with_statistics(
# query, [meter], period=period, stats_attr=None,
# additional_query=additional_query,
# filter_func=filter_by_meter_name)
except Exception:
resources = []
unit = ""
exceptions.handle(request, _('Unable to retrieve statistics.'))
return ceilometer_usage, unit
