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
|
// SPDX-License-Identifier: GPL-3.0-or-later
package clickhouse
import (
_ "embed"
"errors"
"net/http"
"time"
"github.com/netdata/netdata/go/plugins/plugin/go.d/agent/module"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("clickhouse", module.Creator{
Create: func() module.Module { return New() },
Config: func() any { return &Config{} },
JobConfigSchema: configSchema,
})
}
func New() *ClickHouse {
return &ClickHouse{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1:8123",
},
Client: web.Client{
Timeout: web.Duration(time.Second),
},
},
},
charts: chCharts.Copy(),
seenDisks: make(map[string]*seenDisk),
seenDbTables: make(map[string]*seenTable),
}
}
type Config struct {
UpdateEvery int `yaml:"update_every,omitempty" json:"update_every"`
web.HTTP `yaml:",inline" json:""`
}
type (
ClickHouse struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
httpClient *http.Client
seenDisks map[string]*seenDisk
seenDbTables map[string]*seenTable
}
seenDisk struct{ disk string }
seenTable struct{ db, table string }
)
func (c *ClickHouse) Configuration() any {
return c.Config
}
func (c *ClickHouse) Init() error {
if err := c.validateConfig(); err != nil {
c.Errorf("config validation: %v", err)
return err
}
httpClient, err := c.initHTTPClient()
if err != nil {
c.Errorf("init HTTP client: %v", err)
return err
}
c.httpClient = httpClient
c.Debugf("using URL %s", c.URL)
c.Debugf("using timeout: %s", c.Timeout)
return nil
}
func (c *ClickHouse) Check() error {
mx, err := c.collect()
if err != nil {
c.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (c *ClickHouse) Charts() *module.Charts {
return c.charts
}
func (c *ClickHouse) Collect() map[string]int64 {
mx, err := c.collect()
if err != nil {
c.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (c *ClickHouse) Cleanup() {
if c.httpClient != nil {
c.httpClient.CloseIdleConnections()
}
}
|
