1 files changed, 119 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/isc_dhcpd/isc_dhcpd.go b/src/go/collectors/go.d.plugin/modules/isc_dhcpd/isc_dhcpd.go
new file mode 100644
index 000000000..087f1f95a
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/isc_dhcpd/isc_dhcpd.go
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package isc_dhcpd
+
+import (
+	_ "embed"
+	"errors"
+	"time"
+
+	"github.com/netdata/netdata/go/go.d.plugin/agent/module"
+)
+
+//go:embed "config_schema.json"
+var configSchema string
+
+func init() {
+	module.Register("isc_dhcpd", module.Creator{
+		JobConfigSchema: configSchema,
+		Defaults: module.Defaults{
+			UpdateEvery: 1,
+		},
+		Create: func() module.Module { return New() },
+	})
+}
+
+func New() *DHCPd {
+	return &DHCPd{
+		Config: Config{
+			LeasesPath: "/var/lib/dhcp/dhcpd.leases",
+		},
+
+		collected: make(map[string]int64),
+	}
+}
+
+type (
+	Config struct {
+		UpdateEvery int          `yaml:"update_every" json:"update_every"`
+		LeasesPath  string       `yaml:"leases_path" json:"leases_path"`
+		Pools       []PoolConfig `yaml:"pools" json:"pools"`
+	}
+	PoolConfig struct {
+		Name     string `yaml:"name" json:"name"`
+		Networks string `yaml:"networks" json:"networks"`
+	}
+)
+
+type DHCPd struct {
+	module.Base
+	Config `yaml:",inline" json:""`
+
+	charts *module.Charts
+
+	pools         []ipPool
+	leasesModTime time.Time
+	collected     map[string]int64
+}
+
+func (d *DHCPd) Configuration() any {
+	return d.Config
+}
+
+func (d *DHCPd) Init() error {
+	err := d.validateConfig()
+	if err != nil {
+		d.Errorf("config validation: %v", err)
+		return err
+	}
+
+	pools, err := d.initPools()
+	if err != nil {
+		d.Errorf("ip pools init: %v", err)
+		return err
+	}
+	d.pools = pools
+
+	charts, err := d.initCharts(pools)
+	if err != nil {
+		d.Errorf("charts init: %v", err)
+		return err
+	}
+	d.charts = charts
+
+	d.Debugf("monitoring leases file: %v", d.Config.LeasesPath)
+	d.Debugf("monitoring ip pools: %v", d.Config.Pools)
+
+	return nil
+}
+
+func (d *DHCPd) Check() error {
+	mx, err := d.collect()
+	if err != nil {
+		d.Error(err)
+		return err
+	}
+	if len(mx) == 0 {
+		return errors.New("no metrics collected")
+	}
+	return nil
+}
+
+func (d *DHCPd) Charts() *module.Charts {
+	return d.charts
+}
+
+func (d *DHCPd) Collect() map[string]int64 {
+	mx, err := d.collect()
+	if err != nil {
+		d.Error(err)
+	}
+
+	if len(mx) == 0 {
+		return nil
+	}
+
+	return mx
+}
+
+func (d *DHCPd) Cleanup() {}