/
metrics.go
82 lines (76 loc) · 2.48 KB
/
metrics.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
package block
import (
"github.com/go-kit/kit/metrics"
"github.com/go-kit/kit/metrics/discard"
"github.com/go-kit/kit/metrics/prometheus"
stdprometheus "github.com/prometheus/client_golang/prometheus"
)
const (
// MetricsSubsystem is a subsystem shared by all metrics exposed by this
// package.
MetricsSubsystem = "sequencer"
)
// Metrics contains metrics exposed by this package.
type Metrics struct {
// Height of the chain.
Height metrics.Gauge
// Number of transactions.
NumTxs metrics.Gauge
// Size of the block.
BlockSizeBytes metrics.Gauge
// Total number of transactions.
TotalTxs metrics.Gauge
// The latest block height.
CommittedHeight metrics.Gauge `metrics_name:"latest_block_height"`
}
// PrometheusMetrics returns Metrics build using Prometheus client library.
// Optionally, labels can be provided along with their values ("foo",
// "fooValue").
func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
labels := []string{}
for i := 0; i < len(labelsAndValues); i += 2 {
labels = append(labels, labelsAndValues[i])
}
return &Metrics{
Height: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "height",
Help: "Height of the chain.",
}, labels).With(labelsAndValues...),
NumTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "num_txs",
Help: "Number of transactions.",
}, labels).With(labelsAndValues...),
BlockSizeBytes: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "block_size_bytes",
Help: "Size of the block.",
}, labels).With(labelsAndValues...),
TotalTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "total_txs",
Help: "Total number of transactions.",
}, labels).With(labelsAndValues...),
CommittedHeight: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "latest_block_height",
Help: "The latest block height.",
}, labels).With(labelsAndValues...),
}
}
// NopMetrics returns no-op Metrics.
func NopMetrics() *Metrics {
return &Metrics{
Height: discard.NewGauge(),
NumTxs: discard.NewGauge(),
BlockSizeBytes: discard.NewGauge(),
TotalTxs: discard.NewGauge(),
CommittedHeight: discard.NewGauge(),
}
}