def QPSGraph(data_source, title, expressions, **kwargs):
"""Create a graph of QPS, broken up by response code.
Data is drawn from Prometheus.
:param title: Title of the graph.
:param expressions: List of Prometheus expressions. Must be 5.
:param kwargs: Passed on to Graph.
"""
if len(expressions) != 5 and len(expressions) != 7:
raise ValueError('Expected 5 or 7 expressions, got {}: {}'.format(
len(expressions), expressions))
legends = sorted(ALIAS_COLORS.keys())
exprs = zip(legends, expressions)
return stacked(prometheus.PromGraph(
data_source=data_source,
title=title,
expressions=exprs,
aliasColors=ALIAS_COLORS,
yAxes=[
G.YAxis(format=G.OPS_FORMAT),
G.YAxis(format=G.SHORT_FORMAT),
],
**kwargs
))
def PromGraph(*args, **kwargs):
"""A graph of data from our Prometheus."""
kwargs_with_defaults = dict(
tooltip=G.Tooltip(sort=G.SORT_DESC),
nullPointMode=G.NULL_AS_NULL,
)
kwargs_with_defaults.update(kwargs)
return prometheus.PromGraph(data_source=PROMETHEUS, *args, **kwargs_with_defaults)
def StatusQPSGraph(data_source, title, expression, **kwargs):
"""Create a graph of QPS, coloured by status code.
:param title: Title of the graph.
:param expression: Format and PromQL expression; must sum by label
which is http code like 404 or "success" and "error"
:param kwargs: Passed on to Graph.
"""
return W.stacked(
prometheus.PromGraph(
data_source=data_source,
title=title,
expressions=[('{{status_code}}', 'sum by (status_code)(%s)' % (expression))],
seriesOverrides=QPS_SERIES_OVERRIDES,
legend=G.Legend(hideZero=True),
yAxes=[
G.YAxis(format=G.OPS_FORMAT),
G.YAxis(format=G.SHORT_FORMAT),
],
**kwargs
)
)