/
net_linux_test.go
332 lines (281 loc) · 10.5 KB
/
net_linux_test.go
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package net
import (
"fmt"
"io/ioutil"
"net"
"os"
"strings"
"syscall"
"testing"
"github.com/shirou/gopsutil/v3/internal/common"
"github.com/stretchr/testify/assert"
)
func TestIOCountersByFileParsing(t *testing.T) {
// Prpare a temporary file, which will be read during the test
tmpfile, err := ioutil.TempFile("", "proc_dev_net")
defer os.Remove(tmpfile.Name()) // clean up
assert.Nil(t, err, "Temporary file creation failed: ", err)
cases := [4][2]string{
{"eth0: ", "eth1: "},
{"eth0:0: ", "eth1:0: "},
{"eth0:", "eth1:"},
{"eth0:0:", "eth1:0:"},
}
for _, testCase := range cases {
err = tmpfile.Truncate(0)
assert.Nil(t, err, "Temporary file truncating problem: ", err)
// Parse interface name for assertion
interface0 := strings.TrimSpace(testCase[0])
interface0 = interface0[:len(interface0)-1]
interface1 := strings.TrimSpace(testCase[1])
interface1 = interface1[:len(interface1)-1]
// Replace the interfaces from the test case
proc := []byte(fmt.Sprintf("Inter-| Receive | Transmit\n face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n %s1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16\n %s100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600\n", testCase[0], testCase[1]))
// Write /proc/net/dev sample output
_, err = tmpfile.Write(proc)
assert.Nil(t, err, "Temporary file writing failed: ", err)
counters, err := IOCountersByFile(true, tmpfile.Name())
assert.Nil(t, err)
assert.NotEmpty(t, counters)
assert.Equal(t, 2, len(counters))
assert.Equal(t, interface0, counters[0].Name)
assert.Equal(t, 1, int(counters[0].BytesRecv))
assert.Equal(t, 2, int(counters[0].PacketsRecv))
assert.Equal(t, 3, int(counters[0].Errin))
assert.Equal(t, 4, int(counters[0].Dropin))
assert.Equal(t, 5, int(counters[0].Fifoin))
assert.Equal(t, 9, int(counters[0].BytesSent))
assert.Equal(t, 10, int(counters[0].PacketsSent))
assert.Equal(t, 11, int(counters[0].Errout))
assert.Equal(t, 12, int(counters[0].Dropout))
assert.Equal(t, 13, int(counters[0].Fifoout))
assert.Equal(t, interface1, counters[1].Name)
assert.Equal(t, 100, int(counters[1].BytesRecv))
assert.Equal(t, 200, int(counters[1].PacketsRecv))
assert.Equal(t, 300, int(counters[1].Errin))
assert.Equal(t, 400, int(counters[1].Dropin))
assert.Equal(t, 500, int(counters[1].Fifoin))
assert.Equal(t, 900, int(counters[1].BytesSent))
assert.Equal(t, 1000, int(counters[1].PacketsSent))
assert.Equal(t, 1100, int(counters[1].Errout))
assert.Equal(t, 1200, int(counters[1].Dropout))
assert.Equal(t, 1300, int(counters[1].Fifoout))
}
err = tmpfile.Close()
assert.Nil(t, err, "Temporary file closing failed: ", err)
}
func TestGetProcInodesAll(t *testing.T) {
waitForServer := make(chan bool)
go func() { // TCP listening goroutine to have some opened inodes even in CI
addr, err := net.ResolveTCPAddr("tcp", "localhost:0") // dynamically get a random open port from OS
if err != nil {
t.Skipf("unable to resolve localhost: %v", err)
}
l, err := net.ListenTCP(addr.Network(), addr)
if err != nil {
t.Skipf("unable to listen on %v: %v", addr, err)
}
defer l.Close()
waitForServer <- true
for {
conn, err := l.Accept()
if err != nil {
t.Skipf("unable to accept connection: %v", err)
}
defer conn.Close()
}
}()
<-waitForServer
root := common.HostProc("")
v, err := getProcInodesAll(root, 0)
assert.Nil(t, err)
assert.NotEmpty(t, v)
}
func TestConnectionsMax(t *testing.T) {
if os.Getenv("CI") != "" {
t.Skip("Skip CI")
}
max := 10
v, err := ConnectionsMax("tcp", max)
assert.Nil(t, err)
assert.NotEmpty(t, v)
cxByPid := map[int32]int{}
for _, cx := range v {
if cx.Pid > 0 {
cxByPid[cx.Pid]++
}
}
for _, c := range cxByPid {
assert.True(t, c <= max)
}
}
type AddrTest struct {
IP string
Port int
Error bool
}
func TestDecodeAddress(t *testing.T) {
assert := assert.New(t)
addr := map[string]AddrTest{
"11111:0035": {
Error: true,
},
"0100007F:BLAH": {
Error: true,
},
"0085002452100113070057A13F025401:0035": {
IP: "2400:8500:1301:1052:a157:7:154:23f",
Port: 53,
},
"00855210011307F025401:0035": {
Error: true,
},
}
if common.IsLittleEndian() {
addr["0500000A:0016"] = AddrTest{
IP: "10.0.0.5",
Port: 22,
}
addr["0100007F:D1C2"] = AddrTest{
IP: "127.0.0.1",
Port: 53698,
}
} else {
addr["0A000005:0016"] = AddrTest{
IP: "10.0.0.5",
Port: 22,
}
addr["7F000001:D1C2"] = AddrTest{
IP: "127.0.0.1",
Port: 53698,
}
}
for src, dst := range addr {
family := syscall.AF_INET
if len(src) > 13 {
family = syscall.AF_INET6
}
addr, err := decodeAddress(uint32(family), src)
if dst.Error {
assert.NotNil(err, src)
} else {
assert.Nil(err, src)
assert.Equal(dst.IP, addr.IP, src)
assert.Equal(dst.Port, int(addr.Port), src)
}
}
}
func TestReverse(t *testing.T) {
src := []byte{0x01, 0x02, 0x03}
assert.Equal(t, []byte{0x03, 0x02, 0x01}, Reverse(src))
}
func TestConntrackStatFileParsing(t *testing.T) {
tmpfile, err := ioutil.TempFile("", "proc_net_stat_conntrack")
defer os.Remove(tmpfile.Name())
assert.Nil(t, err, "Temporary file creation failed: ", err)
data := []byte(`
entries searched found new invalid ignore delete deleteList insert insertFailed drop earlyDrop icmpError expectNew expectCreate expectDelete searchRestart
0000007b 00000000 00000000 00000000 000b115a 00000084 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000004a
0000007b 00000000 00000000 00000000 0007eee5 00000068 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000035
0000007b 00000000 00000000 00000000 0090346b 00000057 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000025
0000007b 00000000 00000000 00000000 0005920f 00000069 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000064
0000007b 00000000 00000000 00000000 000331ff 00000059 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000003b
0000007b 00000000 00000000 00000000 000314ea 00000066 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000054
0000007b 00000000 00000000 00000000 0002b270 00000055 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000003d
0000007b 00000000 00000000 00000000 0002f67d 00000057 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000042
`)
// Expected results
slist := NewConntrackStatList()
slist.Append(&ConntrackStat{
Entries: 123,
Searched: 0,
Found: 0,
New: 0,
Invalid: 725338,
Ignore: 132,
Delete: 0,
DeleteList: 0,
Insert: 0,
InsertFailed: 0,
Drop: 0,
EarlyDrop: 0,
IcmpError: 0,
ExpectNew: 0,
ExpectCreate: 0,
ExpectDelete: 0,
SearchRestart: 74,
})
slist.Append(&ConntrackStat{123, 0, 0, 0, 519909, 104, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 53})
slist.Append(&ConntrackStat{123, 0, 0, 0, 9450603, 87, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37})
slist.Append(&ConntrackStat{123, 0, 0, 0, 365071, 105, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100})
slist.Append(&ConntrackStat{123, 0, 0, 0, 209407, 89, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 59})
slist.Append(&ConntrackStat{123, 0, 0, 0, 201962, 102, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 84})
slist.Append(&ConntrackStat{123, 0, 0, 0, 176752, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 61})
slist.Append(&ConntrackStat{123, 0, 0, 0, 194173, 87, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 66})
// Write data to tempfile
_, err = tmpfile.Write(data)
assert.Nil(t, err, "Temporary file writing failed: ", err)
// Function under test
stats, err := conntrackStatsFromFile(tmpfile.Name(), true)
assert.Equal(t, 8, len(stats), "Expected 8 results")
summary := &ConntrackStat{}
for i, exp := range slist.Items() {
st := stats[i]
assert.Equal(t, exp.Entries, st.Entries)
summary.Entries += st.Entries
assert.Equal(t, exp.Searched, st.Searched)
summary.Searched += st.Searched
assert.Equal(t, exp.Found, st.Found)
summary.Found += st.Found
assert.Equal(t, exp.New, st.New)
summary.New += st.New
assert.Equal(t, exp.Invalid, st.Invalid)
summary.Invalid += st.Invalid
assert.Equal(t, exp.Ignore, st.Ignore)
summary.Ignore += st.Ignore
assert.Equal(t, exp.Delete, st.Delete)
summary.Delete += st.Delete
assert.Equal(t, exp.DeleteList, st.DeleteList)
summary.DeleteList += st.DeleteList
assert.Equal(t, exp.Insert, st.Insert)
summary.Insert += st.Insert
assert.Equal(t, exp.InsertFailed, st.InsertFailed)
summary.InsertFailed += st.InsertFailed
assert.Equal(t, exp.Drop, st.Drop)
summary.Drop += st.Drop
assert.Equal(t, exp.EarlyDrop, st.EarlyDrop)
summary.EarlyDrop += st.EarlyDrop
assert.Equal(t, exp.IcmpError, st.IcmpError)
summary.IcmpError += st.IcmpError
assert.Equal(t, exp.ExpectNew, st.ExpectNew)
summary.ExpectNew += st.ExpectNew
assert.Equal(t, exp.ExpectCreate, st.ExpectCreate)
summary.ExpectCreate += st.ExpectCreate
assert.Equal(t, exp.ExpectDelete, st.ExpectDelete)
summary.ExpectDelete += st.ExpectDelete
assert.Equal(t, exp.SearchRestart, st.SearchRestart)
summary.SearchRestart += st.SearchRestart
}
// Test summary grouping
totals, err := conntrackStatsFromFile(tmpfile.Name(), false)
for i, st := range totals {
assert.Equal(t, summary.Entries, st.Entries)
assert.Equal(t, summary.Searched, st.Searched)
assert.Equal(t, summary.Found, st.Found)
assert.Equal(t, summary.New, st.New)
assert.Equal(t, summary.Invalid, st.Invalid)
assert.Equal(t, summary.Ignore, st.Ignore)
assert.Equal(t, summary.Delete, st.Delete)
assert.Equal(t, summary.DeleteList, st.DeleteList)
assert.Equal(t, summary.Insert, st.Insert)
assert.Equal(t, summary.InsertFailed, st.InsertFailed)
assert.Equal(t, summary.Drop, st.Drop)
assert.Equal(t, summary.EarlyDrop, st.EarlyDrop)
assert.Equal(t, summary.IcmpError, st.IcmpError)
assert.Equal(t, summary.ExpectNew, st.ExpectNew)
assert.Equal(t, summary.ExpectCreate, st.ExpectCreate)
assert.Equal(t, summary.ExpectDelete, st.ExpectDelete)
assert.Equal(t, summary.SearchRestart, st.SearchRestart)
assert.Equal(t, 0, i) // Should only have one element
}
}