func UsagePreInstall() {
if kmgCmd.Exist("mpstat") && kmgCmd.Exist("netstat") {
return
}
kmgCmd.MustCombinedOutput("sudo apt-get update")
kmgCmd.MustCombinedOutput("sudo apt-get install -y sysstat")
}
//获取外网网卡
func FindDeviceNameByIp(ip string) string {
o := string(kmgCmd.MustCombinedOutput("ifconfig -s"))
lines := strings.Split(o, "\n")
for i, l := range lines {
if i == 0 {
continue
}
dn := strings.Split(l, " ")
deviceName := dn[0]
s := string(kmgCmd.MustCombinedOutput("ifconfig " + deviceName))
if strings.Contains(s, ip) {
return deviceName
}
}
return ""
}
// 仅支持linux ipv4
func MustGetRouteTable() []*RouteRule {
if !kmgPlatform.IsLinux() {
panic("[MustGetRouteTable] only support linux now")
}
outputS := kmgCmd.MustCombinedOutput("netstat -nr")
lineList := strings.Split(string(outputS), "\n")
if len(lineList) < 2 {
panic("[getRouteTable] len(lineList)<2 " + string(outputS))
}
output := []*RouteRule{}
for i, line := range lineList[2:] {
line = strings.TrimSpace(line)
if line == "" {
continue
}
part := strings.Fields(line)
if len(part) < 4 {
panic(fmt.Errorf("[getRouteTable] len(part)<4 lineNum:%d content:%s", i, string(outputS)))
}
thisRule := &RouteRule{
Destination: part[0],
Gateway: part[1],
Genmask: part[2],
Iface: part[len(part)-1],
}
output = append(output, thisRule)
}
return output
}
func GetDefaultGateway() string {
if !kmgPlatform.IsDarwin() {
panic("not support platform")
}
output := kmgCmd.MustCombinedOutput("netstat -nr")
for _, line := range strings.Split(string(output), "\n") {
if strings.Contains(line, "default") {
return strings.Fields(line)[1]
}
}
return ""
}
/*
// 返回最小变化的提交的名字
// 找到当前文件和commitId里面变化最小的版本
// localCommit 是当前文件的提交
// targetCommit 是需要寻找最小版本的commit
无.git文件恢复
git clone xxx ./tmp1
mv ./tmp1/.git ./
git checkout --orphan current
kmg GitSmallestChange -local=current -target=master
git checkout xx //返回的那个分支地址
*/
func (repo *Repository) MustSmallestChange(localCommit string, targetCommit string) string {
commitList := repo.MustGetAllParentCommitId(targetCommit)
minNum := 2 << 31
minCommit := ""
lineBreak := []byte("\n")
for _, commitName := range commitList {
output := kmgCmd.MustCombinedOutput("git diff " + localCommit + " " + commitName)
num := bytes.Count(output, lineBreak)
if minNum > num {
minNum = num
minCommit = commitName
if num == 0 {
break
}
}
}
return minCommit
}
func MustGetIptableRuleList() []IptableRule {
content := kmgCmd.MustCombinedOutput("iptables-save")
return parseIptableSave(string(content))
}
//只返回 / 挂载的磁盘空间
//total 1024byte 的默认单位，没有选项改成byte
func Disk() (used float64, total int) {
return disk(string(kmgCmd.MustCombinedOutput("df")))
}
func Cpu() (used float64, numOfCore int) {
return cpu(string(kmgCmd.MustCombinedOutput("mpstat")))
}
//byte
func Memory() (used float64, total int) {
return memory(string(kmgCmd.MustCombinedOutput("free -b")))
}
//byte
func NetworkRXTX(deviceName string) (rx int, tx int) {
return networkRXTX(string(kmgCmd.MustCombinedOutput("ifconfig " + deviceName)))
}
//是否是root,此处只返回是否,其他错误抛panic
// TODO 名字比较费解.
func MustIsRoot() bool {
return bytes.Equal(kmgCmd.MustCombinedOutput("whoami"), []byte("root\n"))
}