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// 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() {}
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