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// SPDX-License-Identifier: GPL-3.0-or-later
package unbound
import (
_ "embed"
"errors"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/socket"
"github.com/netdata/netdata/go/go.d.plugin/pkg/tlscfg"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("unbound", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
})
}
func New() *Unbound {
return &Unbound{
Config: Config{
Address: "127.0.0.1:8953",
ConfPath: "/etc/unbound/unbound.conf",
Timeout: web.Duration(time.Second),
Cumulative: false,
UseTLS: true,
TLSConfig: tlscfg.TLSConfig{
TLSCert: "/etc/unbound/unbound_control.pem",
TLSKey: "/etc/unbound/unbound_control.key",
InsecureSkipVerify: true,
},
},
curCache: newCollectCache(),
cache: newCollectCache(),
}
}
type Config struct {
tlscfg.TLSConfig `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
Address string `yaml:"address" json:"address"`
ConfPath string `yaml:"conf_path" json:"conf_path"`
Timeout web.Duration `yaml:"timeout" json:"timeout"`
Cumulative bool `yaml:"cumulative_stats" json:"cumulative_stats"`
UseTLS bool `yaml:"use_tls" json:"use_tls"`
}
type Unbound struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
client socket.Client
cache collectCache
curCache collectCache
prevCacheMiss float64 // needed for cumulative mode
extChartsCreated bool
}
func (u *Unbound) Configuration() any {
return u.Config
}
func (u *Unbound) Init() error {
if enabled := u.initConfig(); !enabled {
return errors.New("remote control is disabled in the configuration file")
}
if err := u.initClient(); err != nil {
u.Errorf("creating client: %v", err)
return err
}
u.charts = charts(u.Cumulative)
u.Debugf("using address: %s, cumulative: %v, use_tls: %v, timeout: %s", u.Address, u.Cumulative, u.UseTLS, u.Timeout)
if u.UseTLS {
u.Debugf("using tls_skip_verify: %v, tls_key: %s, tls_cert: %s", u.InsecureSkipVerify, u.TLSKey, u.TLSCert)
}
return nil
}
func (u *Unbound) Check() error {
mx, err := u.collect()
if err != nil {
u.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (u *Unbound) Charts() *module.Charts {
return u.charts
}
func (u *Unbound) Collect() map[string]int64 {
mx, err := u.collect()
if err != nil {
u.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (u *Unbound) Cleanup() {
if u.client != nil {
_ = u.client.Disconnect()
}
}
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