1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
package widgets
import (
"fmt"
"log"
"strings"
"time"
"github.com/prometheus/client_golang/prometheus"
psNet "github.com/shirou/gopsutil/net"
ui "github.com/xxxserxxx/gotop/v3/termui"
"github.com/xxxserxxx/gotop/v3/utils"
)
const (
NET_INTERFACE_ALL = "all"
NET_INTERFACE_VPN = "tun0"
)
type NetWidget struct {
*ui.SparklineGroup
updateInterval time.Duration
// used to calculate recent network activity
totalBytesRecv uint64
totalBytesSent uint64
NetInterface []string
sentMetric prometheus.Counter
recvMetric prometheus.Counter
}
// TODO: state:merge #169 % option for network use (jrswab/networkPercentage)
func NewNetWidget(netInterface string) *NetWidget {
recvSparkline := ui.NewSparkline()
recvSparkline.Data = []int{}
sentSparkline := ui.NewSparkline()
sentSparkline.Data = []int{}
spark := ui.NewSparklineGroup(recvSparkline, sentSparkline)
self := &NetWidget{
SparklineGroup: spark,
updateInterval: time.Second,
NetInterface: strings.Split(netInterface, ","),
}
self.Title = " Network Usage "
if netInterface != "all" {
self.Title = fmt.Sprintf(" Network Usage: %s ", netInterface)
}
self.update()
go func() {
for range time.NewTicker(self.updateInterval).C {
self.Lock()
self.update()
self.Unlock()
}
}()
return self
}
func (b *NetWidget) EnableMetric() {
b.recvMetric = prometheus.NewCounter(prometheus.CounterOpts{
Namespace: "gotop",
Subsystem: "net",
Name: "recv",
})
prometheus.MustRegister(b.recvMetric)
b.sentMetric = prometheus.NewCounter(prometheus.CounterOpts{
Namespace: "gotop",
Subsystem: "net",
Name: "sent",
})
prometheus.MustRegister(b.sentMetric)
}
func (self *NetWidget) update() {
interfaces, err := psNet.IOCounters(true)
if err != nil {
log.Printf("failed to get network activity from gopsutil: %v", err)
return
}
var totalBytesRecv uint64
var totalBytesSent uint64
interfaceMap := make(map[string]bool)
// Default behaviour
interfaceMap[NET_INTERFACE_ALL] = true
interfaceMap[NET_INTERFACE_VPN] = false
// Build a map with wanted status for each interfaces.
for _, iface := range self.NetInterface {
if strings.HasPrefix(iface, "!") {
interfaceMap[strings.TrimPrefix(iface, "!")] = false
} else {
// if we specify a wanted interface, remove capture on all.
delete(interfaceMap, NET_INTERFACE_ALL)
interfaceMap[iface] = true
}
}
for _, _interface := range interfaces {
wanted, ok := interfaceMap[_interface.Name]
if wanted && ok { // Simple case
totalBytesRecv += _interface.BytesRecv
totalBytesSent += _interface.BytesSent
} else if ok { // Present but unwanted
continue
} else if interfaceMap[NET_INTERFACE_ALL] { // Capture other
totalBytesRecv += _interface.BytesRecv
totalBytesSent += _interface.BytesSent
}
}
var recentBytesRecv uint64
var recentBytesSent uint64
if self.totalBytesRecv != 0 { // if this isn't the first update
recentBytesRecv = totalBytesRecv - self.totalBytesRecv
recentBytesSent = totalBytesSent - self.totalBytesSent
if int(recentBytesRecv) < 0 {
log.Printf("error: negative value for recently received network data from gopsutil. recentBytesRecv: %v", recentBytesRecv)
// recover from error
recentBytesRecv = 0
}
if int(recentBytesSent) < 0 {
log.Printf("error: negative value for recently sent network data from gopsutil. recentBytesSent: %v", recentBytesSent)
// recover from error
recentBytesSent = 0
}
self.Lines[0].Data = append(self.Lines[0].Data, int(recentBytesRecv))
self.Lines[1].Data = append(self.Lines[1].Data, int(recentBytesSent))
if self.sentMetric != nil {
self.sentMetric.Add(float64(recentBytesSent))
self.recvMetric.Add(float64(recentBytesRecv))
}
}
// used in later calls to update
self.totalBytesRecv = totalBytesRecv
self.totalBytesSent = totalBytesSent
// render widget titles
for i := 0; i < 2; i++ {
total, label, recent := func() (uint64, string, uint64) {
if i == 0 {
return totalBytesRecv, "RX", recentBytesRecv
}
return totalBytesSent, "TX", recentBytesSent
}()
recentConverted, unitRecent := utils.ConvertBytes(uint64(recent))
totalConverted, unitTotal := utils.ConvertBytes(uint64(total))
self.Lines[i].Title1 = fmt.Sprintf(" Total %s: %5.1f %s", label, totalConverted, unitTotal)
self.Lines[i].Title2 = fmt.Sprintf(" %s/s: %9.1f %2s/s", label, recentConverted, unitRecent)
}
}
|
