Repository navigation
Expand file tree
/
Copy pathmetric.go
More file actions
192 lines (166 loc) · 5.52 KB
/
Copy pathmetric.go
File metadata and controls
192 lines (166 loc) · 5.52 KB
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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
// Copyright 2020 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package metric // import "miniflux.app/metric"
import (
"time"
"miniflux.app/logger"
"miniflux.app/storage"
"github.com/prometheus/client_golang/prometheus"
)
// Prometheus Metrics.
var (
BackgroundFeedRefreshDuration = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "miniflux",
Name: "background_feed_refresh_duration",
Help: "Processing time to refresh feeds from the background workers",
Buckets: prometheus.LinearBuckets(1, 2, 15),
},
[]string{"status"},
)
ScraperRequestDuration = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "miniflux",
Name: "scraper_request_duration",
Help: "Web scraper request duration",
Buckets: prometheus.LinearBuckets(1, 2, 25),
},
[]string{"status"},
)
ArchiveEntriesDuration = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "miniflux",
Name: "archive_entries_duration",
Help: "Archive entries duration",
Buckets: prometheus.LinearBuckets(1, 2, 30),
},
[]string{"status"},
)
usersGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "users",
Help: "Number of users",
},
)
feedsGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "feeds",
Help: "Number of feeds by status",
},
[]string{"status"},
)
brokenFeedsGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "broken_feeds",
Help: "Number of broken feeds",
},
)
entriesGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "entries",
Help: "Number of entries by status",
},
[]string{"status"},
)
dbOpenConnectionsGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_open_connections",
Help: "The number of established connections both in use and idle",
},
)
dbConnectionsInUseGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_in_use",
Help: "The number of connections currently in use",
},
)
dbConnectionsIdleGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_idle",
Help: "The number of idle connections",
},
)
dbConnectionsWaitCountGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_wait_count",
Help: "The total number of connections waited for",
},
)
dbConnectionsMaxIdleClosedGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_max_idle_closed",
Help: "The total number of connections closed due to SetMaxIdleConns",
},
)
dbConnectionsMaxIdleTimeClosedGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_max_idle_time_closed",
Help: "The total number of connections closed due to SetConnMaxIdleTime",
},
)
dbConnectionsMaxLifetimeClosedGauge = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "miniflux",
Name: "db_connections_max_lifetime_closed",
Help: "The total number of connections closed due to SetConnMaxLifetime",
},
)
)
// Collector represents a metric collector.
type Collector struct {
store *storage.Storage
refreshInterval int
}
// NewCollector initializes a new metric collector.
func NewCollector(store *storage.Storage, refreshInterval int) *Collector {
prometheus.MustRegister(BackgroundFeedRefreshDuration)
prometheus.MustRegister(ScraperRequestDuration)
prometheus.MustRegister(ArchiveEntriesDuration)
prometheus.MustRegister(usersGauge)
prometheus.MustRegister(feedsGauge)
prometheus.MustRegister(brokenFeedsGauge)
prometheus.MustRegister(entriesGauge)
prometheus.MustRegister(dbOpenConnectionsGauge)
prometheus.MustRegister(dbConnectionsInUseGauge)
prometheus.MustRegister(dbConnectionsIdleGauge)
prometheus.MustRegister(dbConnectionsWaitCountGauge)
prometheus.MustRegister(dbConnectionsMaxIdleClosedGauge)
prometheus.MustRegister(dbConnectionsMaxIdleTimeClosedGauge)
prometheus.MustRegister(dbConnectionsMaxLifetimeClosedGauge)
return &Collector{store, refreshInterval}
}
// GatherStorageMetrics polls the database to fetch metrics.
func (c *Collector) GatherStorageMetrics() {
for range time.Tick(time.Duration(c.refreshInterval) * time.Second) {
logger.Debug("[Metric] Collecting database metrics")
usersGauge.Set(float64(c.store.CountUsers()))
brokenFeedsGauge.Set(float64(c.store.CountAllFeedsWithErrors()))
feedsCount := c.store.CountAllFeeds()
for status, count := range feedsCount {
feedsGauge.WithLabelValues(status).Set(float64(count))
}
entriesCount := c.store.CountAllEntries()
for status, count := range entriesCount {
entriesGauge.WithLabelValues(status).Set(float64(count))
}
dbStats := c.store.DBStats()
dbOpenConnectionsGauge.Set(float64(dbStats.OpenConnections))
dbConnectionsInUseGauge.Set(float64(dbStats.InUse))
dbConnectionsIdleGauge.Set(float64(dbStats.Idle))
dbConnectionsWaitCountGauge.Set(float64(dbStats.WaitCount))
dbConnectionsMaxIdleClosedGauge.Set(float64(dbStats.MaxIdleClosed))
dbConnectionsMaxIdleTimeClosedGauge.Set(float64(dbStats.MaxIdleTimeClosed))
dbConnectionsMaxLifetimeClosedGauge.Set(float64(dbStats.MaxLifetimeClosed))
}
}