| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package openvpn |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | func (c *Collector) collect() (map[string]int64, error) { |
| 11 | var err error |
| 12 | |
| 13 | if err := c.client.Connect(); err != nil { |
| 14 | return nil, err |
| 15 | } |
| 16 | defer func() { _ = c.client.Disconnect() }() |
| 17 | |
| 18 | mx := make(map[string]int64) |
| 19 | |
| 20 | if err = c.collectLoadStats(mx); err != nil { |
| 21 | return nil, err |
| 22 | } |
| 23 | |
| 24 | if c.perUserMatcher != nil { |
| 25 | if err = c.collectUsers(mx); err != nil { |
| 26 | return nil, err |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | return mx, nil |
| 31 | } |
| 32 | |
| 33 | func (c *Collector) collectLoadStats(mx map[string]int64) error { |
| 34 | stats, err := c.client.LoadStats() |
| 35 | if err != nil { |
| 36 | return err |
| 37 | } |
| 38 | |
| 39 | mx["clients"] = stats.NumOfClients |
| 40 | mx["bytes_in"] = stats.BytesIn |
| 41 | mx["bytes_out"] = stats.BytesOut |
| 42 | return nil |
| 43 | } |
| 44 | |
| 45 | func (c *Collector) collectUsers(mx map[string]int64) error { |
| 46 | users, err := c.client.Users() |
| 47 | if err != nil { |
| 48 | return err |
| 49 | } |
| 50 | |
| 51 | now := time.Now().Unix() |
| 52 | var name string |
| 53 | |
| 54 | for _, user := range users { |
| 55 | if user.Username == "UNDEF" { |
| 56 | name = user.CommonName |
| 57 | } else { |
| 58 | name = user.Username |
| 59 | } |
| 60 | |
| 61 | if !c.perUserMatcher.MatchString(name) { |
| 62 | continue |
| 63 | } |
| 64 | if !c.collectedUsers[name] { |
| 65 | c.collectedUsers[name] = true |
| 66 | if err := c.addUserCharts(name); err != nil { |
| 67 | c.Warning(err) |
| 68 | } |
| 69 | } |
| 70 | mx[name+"_bytes_received"] = user.BytesReceived |
| 71 | mx[name+"_bytes_sent"] = user.BytesSent |
| 72 | mx[name+"_connection_time"] = now - user.ConnectedSince |
| 73 | } |
| 74 | return nil |
| 75 | } |
| 76 | |
| 77 | func (c *Collector) addUserCharts(userName string) error { |
| 78 | cs := userCharts.Copy() |
| 79 | |
| 80 | for _, chart := range *cs { |
| 81 | chart.ID = fmt.Sprintf(chart.ID, userName) |
| 82 | chart.Fam = fmt.Sprintf(chart.Fam, userName) |
| 83 | |
| 84 | for _, dim := range chart.Dims { |
| 85 | dim.ID = fmt.Sprintf(dim.ID, userName) |
| 86 | } |
| 87 | chart.MarkNotCreated() |
| 88 | } |
| 89 | return c.charts.Add(*cs...) |
| 90 | } |