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
|
// SPDX-License-Identifier: GPL-3.0-or-later
package dnsquery
import (
_ "embed"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
"github.com/miekg/dns"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("dns_query", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 5,
},
Create: func() module.Module { return New() },
})
}
func New() *DNSQuery {
return &DNSQuery{
Config: Config{
Timeout: web.Duration(time.Second * 2),
Network: "udp",
RecordTypes: []string{"A"},
Port: 53,
},
newDNSClient: func(network string, timeout time.Duration) dnsClient {
return &dns.Client{
Net: network,
ReadTimeout: timeout,
}
},
}
}
type Config struct {
UpdateEvery int `yaml:"update_every" json:"update_every"`
Timeout web.Duration `yaml:"timeout" json:"timeout"`
Domains []string `yaml:"domains" json:"domains"`
Servers []string `yaml:"servers" json:"servers"`
Network string `yaml:"network" json:"network"`
RecordType string `yaml:"record_type" json:"record_type"`
RecordTypes []string `yaml:"record_types" json:"record_types"`
Port int `yaml:"port" json:"port"`
}
type (
DNSQuery struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
dnsClient dnsClient
newDNSClient func(network string, duration time.Duration) dnsClient
recordTypes map[string]uint16
}
dnsClient interface {
Exchange(msg *dns.Msg, address string) (response *dns.Msg, rtt time.Duration, err error)
}
)
func (d *DNSQuery) Configuration() any {
return d.Config
}
func (d *DNSQuery) Init() error {
if err := d.verifyConfig(); err != nil {
d.Errorf("config validation: %v", err)
return err
}
rt, err := d.initRecordTypes()
if err != nil {
d.Errorf("init record type: %v", err)
return err
}
d.recordTypes = rt
charts, err := d.initCharts()
if err != nil {
d.Errorf("init charts: %v", err)
return err
}
d.charts = charts
return nil
}
func (d *DNSQuery) Check() error {
return nil
}
func (d *DNSQuery) Charts() *module.Charts {
return d.charts
}
func (d *DNSQuery) Collect() map[string]int64 {
mx, err := d.collect()
if err != nil {
d.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (d *DNSQuery) Cleanup() {}
|
