def common(req, q):
# process metric name
name = req.get_param('name')
if name and name.strip():
q.append({'match': {'name': name.strip()}})
# handle start and end time
try:
st = req.get_param('start_time')
st = tu.parse_isotime(st) if st else ParamUtil._default_st()
st = st.timetuple()
et = req.get_param('end_time')
et = tu.parse_isotime(et) if et else ParamUtil._default_et()
et = et.timetuple()
q.append({'range': {'timestamp': {'lt': time.mktime(et),
'gte': time.mktime(st)}}})
except Exception:
return False
# handle dimensions
dimensions = req.get_param('dimensions')
matches = []
def _handle_pair(pair):
param = pair.split(':')
if len(param) == 2 and param[0] and param[1]:
key = param[0].strip()
value = param[1].strip()
# in case that the value is numeric
try:
value = float(param[1].strip())
except Exception:
# The value is not numeric, so use as is.
pass
matches.append({'match': {'dimensions.' + key: value}})
if dimensions:
map(_handle_pair, dimensions.split(','))
q += matches
return True
def common(req, q):
# process metric name
name = req.get_param('name')
if name and name.strip():
q.append({'match': {'name': name.strip()}})
# handle start and end time
try:
st = req.get_param('start_time')
st = tu.parse_isotime(st) if st else ParamUtil._default_st()
st = st.timetuple()
et = req.get_param('end_time')
et = tu.parse_isotime(et) if et else ParamUtil._default_et()
et = et.timetuple()
q.append({'range': {'timestamp': {'lt': time.mktime(et),
'gte': time.mktime(st)}}})
except Exception:
return False
# handle dimensions
dimensions = req.get_param('dimensions')
matches = []
def _handle_pair(pair):
param = pair.split(':')
if len(param) == 2 and param[0] and param[1]:
key = param[0].strip()
value = param[1].strip()
# in case that the value is numeric
try:
value = float(param[1].strip())
except Exception:
# The value is not numeric, so use as is.
pass
matches.append({'match': {'dimensions.' + key: value}})
if dimensions:
map(_handle_pair, dimensions.split(','))
q += matches
return True
def update_sub_expr_state(self, expr, expr_data):
def _update_metrics():
"""Delete metrics not in period."""
data_list = expr_data['data'][expr.fmtd_sub_expr_str]['metrics']
start_time = t_now - (float(expr.period) + 2) * int(expr.periods)
while (len(data_list) != 0
and data_list[0]['timestamp'] < start_time):
data_list.popleft()
def _update_state():
"""Update state of a sub expr."""
data_sub = expr_data['data'][expr.fmtd_sub_expr_str]
data_list = data_sub['metrics']
if len(data_list) == 0:
data_sub['state'] = 'UNDETERMINED'
else:
period = float(expr.period)
periods = int(expr.periods)
right = t_now
left = right - period
temp_data = []
value_in_periods = []
for i in range(len(data_list) - 1, -1, -1):
if data_list[i]['timestamp'] >= left:
temp_data.append(float(data_list[i]['value']))
else:
value = calculator.calc_value(
expr.normalized_func, temp_data)
value_in_periods.append(value)
right = left
left = right - period
temp_data = []
value = calculator.calc_value(
expr.normalized_func, temp_data)
value_in_periods.append(value)
for i in range(len(value_in_periods), periods, 1):
value_in_periods.append(None)
expr_data['data'][expr.fmtd_sub_expr_str]['values'] = (
value_in_periods)
expr_data['data'][expr.fmtd_sub_expr_str]['state'] = (
calculator.compare_thresh(
value_in_periods,
expr.normalized_operator,
float(expr.threshold)))
t_now = tu.iso8601_from_timestamp(tu.utcnow_ts())
t_now = tu.parse_isotime(t_now).timetuple()
t_now = time.mktime(t_now)
_update_metrics()
_update_state()
def _add_metrics():
temp = None
if self.match_by:
q_name = self.get_matched_data_queue_name(data)
if q_name:
temp = self.expr_data_queue[q_name]
else:
if None not in self.expr_data_queue:
self.create_data_item(None)
temp = self.expr_data_queue[None]
if temp:
data_list = temp['data'][expr.fmtd_sub_expr_str]
data_list['metrics'].append(
{'value': float(data['value']),
'timestamp':
time.mktime(tu.parse_isotime(
data['timestamp']).timetuple())})
