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#
# Copyright 2016 IBM
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from ceilometer.publisher import http
from ceilometer import sample
class PrometheusPublisher(http.HttpPublisher):
"""Publish metering data to Prometheus Pushgateway endpoint
This dispatcher inherits from all options of the http dispatcher.
To use this publisher for samples, add the following section to the
/etc/ceilometer/pipeline.yaml file or simply add it to an existing
pipeline::
- name: meter_file
meters:
- "*"
publishers:
- prometheus://mypushgateway/metrics/job/ceilometer
"""
HEADERS = {'Content-type': 'plain/text'}
def publish_samples(self, samples):
"""Send a metering message for publishing
:param samples: Samples from pipeline after transformation
"""
if not samples:
return
data = ""
doc_done = set()
for s in samples:
# NOTE(sileht): delta can't be converted into prometheus data
# format so don't set the metric type for it
metric_type = None
if s.type == sample.TYPE_CUMULATIVE:
metric_type = "counter"
elif s.type == sample.TYPE_GAUGE:
metric_type = "gauge"
curated_sname = s.name.replace(".", "_")
if metric_type and curated_sname not in doc_done:
data += "# TYPE %s %s\n" % (curated_sname, metric_type)
doc_done.add(curated_sname)
# NOTE(sileht): prometheus pushgateway doesn't allow to push
# timestamp_ms
#
# timestamp_ms = (
# s.get_iso_timestamp().replace(tzinfo=None) -
# datetime.utcfromtimestamp(0)
# ).total_seconds() * 1000
# data += '%s{resource_id="%s"} %s %d\n' % (
# curated_sname, s.resource_id, s.volume, timestamp_ms)
data += '%s{resource_id="%s", project_id="%s"} %s\n' % (
curated_sname, s.resource_id, s.project_id, s.volume)
self._do_post(data)
@staticmethod
def publish_events(events):
raise NotImplementedError
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