65 lines
2.8 KiB
Python
65 lines
2.8 KiB
Python
#!/usr/bin/python
|
|
|
|
from __future__ import unicode_literals
|
|
|
|
from ..utils import floatToGoString
|
|
|
|
CONTENT_TYPE_LATEST = str('application/openmetrics-text; version=0.0.1; charset=utf-8')
|
|
"""Content type of the latest OpenMetrics text format"""
|
|
|
|
|
|
def generate_latest(registry):
|
|
'''Returns the metrics from the registry in latest text format as a string.'''
|
|
output = []
|
|
for metric in registry.collect():
|
|
try:
|
|
mname = metric.name
|
|
output.append('# HELP {0} {1}\n'.format(
|
|
mname, metric.documentation.replace('\\', r'\\').replace('\n', r'\n').replace('"', r'\"')))
|
|
output.append('# TYPE {0} {1}\n'.format(mname, metric.type))
|
|
if metric.unit:
|
|
output.append('# UNIT {0} {1}\n'.format(mname, metric.unit))
|
|
for s in metric.samples:
|
|
if s.labels:
|
|
labelstr = '{{{0}}}'.format(','.join(
|
|
['{0}="{1}"'.format(
|
|
k, v.replace('\\', r'\\').replace('\n', r'\n').replace('"', r'\"'))
|
|
for k, v in sorted(s.labels.items())]))
|
|
else:
|
|
labelstr = ''
|
|
if s.exemplar:
|
|
if metric.type not in ('histogram', 'gaugehistogram') or not s.name.endswith('_bucket'):
|
|
raise ValueError("Metric {0} has exemplars, but is not a histogram bucket".format(metric.name))
|
|
labels = '{{{0}}}'.format(','.join(
|
|
['{0}="{1}"'.format(
|
|
k, v.replace('\\', r'\\').replace('\n', r'\n').replace('"', r'\"'))
|
|
for k, v in sorted(s.exemplar.labels.items())]))
|
|
if s.exemplar.timestamp is not None:
|
|
exemplarstr = ' # {0} {1} {2}'.format(
|
|
labels,
|
|
floatToGoString(s.exemplar.value),
|
|
s.exemplar.timestamp,
|
|
)
|
|
else:
|
|
exemplarstr = ' # {0} {1}'.format(
|
|
labels,
|
|
floatToGoString(s.exemplar.value),
|
|
)
|
|
else:
|
|
exemplarstr = ''
|
|
timestamp = ''
|
|
if s.timestamp is not None:
|
|
timestamp = ' {0}'.format(s.timestamp)
|
|
output.append('{0}{1} {2}{3}{4}\n'.format(
|
|
s.name,
|
|
labelstr,
|
|
floatToGoString(s.value),
|
|
timestamp,
|
|
exemplarstr,
|
|
))
|
|
except Exception as exception:
|
|
exception.args = (exception.args or ('',)) + (metric,)
|
|
raise
|
|
|
|
output.append('# EOF\n')
|
|
return ''.join(output).encode('utf-8')
|