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// SPDX-License-Identifier: GPL-3.0-or-later
package pihole
import (
_ "embed"
"errors"
"net/http"
"sync"
"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("pihole", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 5,
},
Create: func() module.Module { return New() },
})
}
func New() *Pihole {
return &Pihole{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1",
},
Client: web.Client{
Timeout: web.Duration(time.Second * 5),
},
},
SetupVarsPath: "/etc/pihole/setupVars.conf",
},
checkVersion: true,
charts: baseCharts.Copy(),
addQueriesTypesOnce: &sync.Once{},
addFwsDestinationsOnce: &sync.Once{},
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
SetupVarsPath string `yaml:"setup_vars_path" json:"setup_vars_path"`
}
type Pihole struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
addQueriesTypesOnce *sync.Once
addFwsDestinationsOnce *sync.Once
httpClient *http.Client
checkVersion bool
}
func (p *Pihole) Configuration() any {
return p.Config
}
func (p *Pihole) Init() error {
if err := p.validateConfig(); err != nil {
p.Errorf("config validation: %v", err)
return err
}
httpClient, err := p.initHTTPClient()
if err != nil {
p.Errorf("init http client: %v", err)
return err
}
p.httpClient = httpClient
p.Password = p.getWebPassword()
if p.Password == "" {
p.Warning("no web password, not all metrics available")
} else {
p.Debugf("web password: %s", p.Password)
}
return nil
}
func (p *Pihole) Check() error {
mx, err := p.collect()
if err != nil {
p.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (p *Pihole) Charts() *module.Charts {
return p.charts
}
func (p *Pihole) Collect() map[string]int64 {
mx, err := p.collect()
if err != nil {
p.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (p *Pihole) Cleanup() {
if p.httpClient != nil {
p.httpClient.CloseIdleConnections()
}
}
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