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// SPDX-License-Identifier: GPL-3.0-or-later
package openvpn
import (
_ "embed"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/modules/openvpn/client"
"github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
"github.com/netdata/netdata/go/go.d.plugin/pkg/socket"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("openvpn", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
})
}
func New() *OpenVPN {
return &OpenVPN{
Config: Config{
Address: "127.0.0.1:7505",
Timeout: web.Duration(time.Second),
},
charts: charts.Copy(),
collectedUsers: make(map[string]bool),
}
}
type Config struct {
UpdateEvery int `yaml:"update_every" json:"update_every"`
Address string `yaml:"address" json:"address"`
Timeout web.Duration `yaml:"timeout" json:"timeout"`
PerUserStats matcher.SimpleExpr `yaml:"per_user_stats" json:"per_user_stats"`
}
type (
OpenVPN struct {
module.Base
Config `yaml:",inline" json:""`
charts *Charts
client openVPNClient
collectedUsers map[string]bool
perUserMatcher matcher.Matcher
}
openVPNClient interface {
socket.Client
Version() (*client.Version, error)
LoadStats() (*client.LoadStats, error)
Users() (client.Users, error)
}
)
func (o *OpenVPN) Configuration() any {
return o.Config
}
func (o *OpenVPN) Init() error {
if err := o.validateConfig(); err != nil {
o.Error(err)
return err
}
m, err := o.initPerUserMatcher()
if err != nil {
o.Error(err)
return err
}
o.perUserMatcher = m
o.client = o.initClient()
o.Infof("using address: %s, timeout: %s", o.Address, o.Timeout)
return nil
}
func (o *OpenVPN) Check() error {
if err := o.client.Connect(); err != nil {
o.Error(err)
return err
}
defer func() { _ = o.client.Disconnect() }()
ver, err := o.client.Version()
if err != nil {
o.Error(err)
o.Cleanup()
return err
}
o.Infof("connected to OpenVPN v%d.%d.%d, Management v%d", ver.Major, ver.Minor, ver.Patch, ver.Management)
return nil
}
func (o *OpenVPN) Charts() *Charts { return o.charts }
func (o *OpenVPN) Collect() map[string]int64 {
mx, err := o.collect()
if err != nil {
o.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (o *OpenVPN) Cleanup() {
if o.client == nil {
return
}
_ = o.client.Disconnect()
}
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