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// SPDX-License-Identifier: GPL-3.0-or-later
package openvpn
import (
"fmt"
"time"
)
func (o *OpenVPN) collect() (map[string]int64, error) {
var err error
if err := o.client.Connect(); err != nil {
return nil, err
}
defer func() { _ = o.client.Disconnect() }()
mx := make(map[string]int64)
if err = o.collectLoadStats(mx); err != nil {
return nil, err
}
if o.perUserMatcher != nil {
if err = o.collectUsers(mx); err != nil {
return nil, err
}
}
return mx, nil
}
func (o *OpenVPN) collectLoadStats(mx map[string]int64) error {
stats, err := o.client.LoadStats()
if err != nil {
return err
}
mx["clients"] = stats.NumOfClients
mx["bytes_in"] = stats.BytesIn
mx["bytes_out"] = stats.BytesOut
return nil
}
func (o *OpenVPN) collectUsers(mx map[string]int64) error {
users, err := o.client.Users()
if err != nil {
return err
}
now := time.Now().Unix()
var name string
for _, user := range users {
if user.Username == "UNDEF" {
name = user.CommonName
} else {
name = user.Username
}
if !o.perUserMatcher.MatchString(name) {
continue
}
if !o.collectedUsers[name] {
o.collectedUsers[name] = true
if err := o.addUserCharts(name); err != nil {
o.Warning(err)
}
}
mx[name+"_bytes_received"] = user.BytesReceived
mx[name+"_bytes_sent"] = user.BytesSent
mx[name+"_connection_time"] = now - user.ConnectedSince
}
return nil
}
func (o *OpenVPN) addUserCharts(userName string) error {
cs := userCharts.Copy()
for _, chart := range *cs {
chart.ID = fmt.Sprintf(chart.ID, userName)
chart.Fam = fmt.Sprintf(chart.Fam, userName)
for _, dim := range chart.Dims {
dim.ID = fmt.Sprintf(dim.ID, userName)
}
chart.MarkNotCreated()
}
return o.charts.Add(*cs...)
}
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