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// SPDX-License-Identifier: GPL-3.0-or-later
package powerdns_recursor
import (
_ "embed"
"errors"
"net/http"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("powerdns_recursor", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
})
}
func New() *Recursor {
return &Recursor{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1:8081",
},
Client: web.Client{
Timeout: web.Duration(time.Second),
},
},
},
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
}
type Recursor struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
httpClient *http.Client
}
func (r *Recursor) Configuration() any {
return r.Config
}
func (r *Recursor) Init() error {
err := r.validateConfig()
if err != nil {
r.Errorf("config validation: %v", err)
return err
}
client, err := r.initHTTPClient()
if err != nil {
r.Errorf("init HTTP client: %v", err)
return err
}
r.httpClient = client
cs, err := r.initCharts()
if err != nil {
r.Errorf("init charts: %v", err)
return err
}
r.charts = cs
return nil
}
func (r *Recursor) Check() error {
mx, err := r.collect()
if err != nil {
r.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (r *Recursor) Charts() *module.Charts {
return r.charts
}
func (r *Recursor) Collect() map[string]int64 {
ms, err := r.collect()
if err != nil {
r.Error(err)
}
if len(ms) == 0 {
return nil
}
return ms
}
func (r *Recursor) Cleanup() {
if r.httpClient == nil {
return
}
r.httpClient.CloseIdleConnections()
}
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