-
Notifications
You must be signed in to change notification settings - Fork 309
/
prometheus_sink.go
110 lines (93 loc) · 3.23 KB
/
prometheus_sink.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
package sink
import (
"sync"
"github.com/apache/incubator-pegasus/collector/aggregate"
"github.com/prometheus/client_golang/prometheus"
)
type prometheusMetricFamily struct {
metrics map[string]prometheus.Gauge
}
func (f *prometheusMetricFamily) set(name string, value float64) {
f.metrics[name].Set(value)
}
type prometheusSink struct {
tableMap map[int]*prometheusMetricFamily
tableLock sync.RWMutex
clusterMetric *prometheusMetricFamily
allTrackedMetrics []string
}
func newPrometheusSink() *prometheusSink {
sink := &prometheusSink{
tableMap: make(map[int]*prometheusMetricFamily),
allTrackedMetrics: aggregate.AllMetrics(),
}
sink.clusterMetric = sink.newClusterMetricFamily()
aggregate.AddHookAfterTableDropped(func(appID int) {
// remove the metrics family belongs to the table
sink.tableLock.Lock()
for _, gauge := range sink.tableMap[appID].metrics {
prometheus.Unregister(gauge)
}
delete(sink.tableMap, appID)
sink.tableLock.Unlock()
})
return sink
}
func (sink *prometheusSink) Report(stats []aggregate.TableStats, allStats aggregate.ClusterStats) {
for _, table := range stats {
sink.tableLock.Lock()
defer sink.tableLock.Unlock()
var mfamily *prometheusMetricFamily
var found bool
if mfamily, found = sink.tableMap[table.AppID]; !found {
mfamily = sink.newTableMetricFamily(table.TableName)
// insert table metrics family
sink.tableMap[table.AppID] = mfamily
}
fillStatsIntoGauges(table.Stats, mfamily)
}
fillStatsIntoGauges(allStats.Stats, sink.clusterMetric)
}
func fillStatsIntoGauges(stats map[string]float64, family *prometheusMetricFamily) {
for name, value := range stats {
family.set(name, value)
}
}
func (sink *prometheusSink) newTableMetricFamily(tableName string) *prometheusMetricFamily {
return sink.newMetricFamily(map[string]string{"table": tableName, "entity": "table"})
}
func (sink *prometheusSink) newClusterMetricFamily() *prometheusMetricFamily {
return sink.newMetricFamily(map[string]string{"entity": "cluster"})
}
func (sink *prometheusSink) newMetricFamily(labels map[string]string) *prometheusMetricFamily {
mfamily := &prometheusMetricFamily{
metrics: make(map[string]prometheus.Gauge),
}
for _, m := range sink.allTrackedMetrics {
// create and register a gauge
opts := prometheus.GaugeOpts{
Name: m,
ConstLabels: labels,
}
gauge := prometheus.NewGauge(opts)
prometheus.MustRegister(gauge)
mfamily.metrics[m] = gauge
}
return mfamily
}