1 # -*- coding: utf-8 -*-
3 # Copyright 2018 Whitestack, LLC
4 # *************************************************************
6 # This file is part of OSM Monitoring module
7 # All Rights Reserved to Whitestack, LLC
9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
10 # not use this file except in compliance with the License. You may obtain
11 # a copy of the License at
13 # http://www.apache.org/licenses/LICENSE-2.0
15 # Unless required by applicable law or agreed to in writing, software
16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
18 # License for the specific language governing permissions and limitations
20 # For those usages not covered by the Apache License, Version 2.0 please
21 # contact: bdiaz@whitestack.com or glavado@whitestack.com
24 from typing
import List
26 from prometheus_client
import start_http_server
27 from prometheus_client
.core
import REGISTRY
, GaugeMetricFamily
29 from osm_mon
.collector
.backends
.base
import BaseBackend
30 from osm_mon
.collector
.metric
import Metric
32 log
= logging
.getLogger(__name__
)
34 OSM_METRIC_PREFIX
= 'osm_'
37 class PrometheusBackend(BaseBackend
):
40 self
.custom_collector
= CustomCollector()
41 self
._start
_exporter
(8000)
43 def handle(self
, metrics
: List
[Metric
]):
45 log
.debug('metrics: %s', metrics
)
46 prometheus_metrics
= {}
47 for metric
in metrics
:
48 if metric
.name
not in prometheus_metrics
:
49 prometheus_metrics
[metric
.name
] = GaugeMetricFamily(
50 OSM_METRIC_PREFIX
+ metric
.name
,
52 labels
=list(metric
.tags
.keys())
54 prometheus_metrics
[metric
.name
].add_metric(list(metric
.tags
.values()), metric
.value
)
55 self
.custom_collector
.metrics
= prometheus_metrics
.values()
57 def _start_exporter(self
, port
):
58 log
.debug('_start_exporter')
59 log
.debug('port: %s', port
)
60 REGISTRY
.register(self
.custom_collector
)
61 log
.info("Starting MON Prometheus exporter at port %s", port
)
62 start_http_server(port
)
65 class CustomCollector(object):