1 files changed, 128 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/pihole/pihole.go b/src/go/collectors/go.d.plugin/modules/pihole/pihole.go
new file mode 100644
index 000000000..a5b103a0c
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/pihole/pihole.go
@@ -0,0 +1,128 @@
+// 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()
+	}
+}