mirror of
https://github.com/genuinetools/reg.git
synced 2024-08-20 13:50:23 -04:00
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
package cluster
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import (
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"bufio"
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"fmt"
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"net"
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"os/exec"
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"strings"
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)
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func (c *Cluster) resolveSystemAddr() (net.IP, error) {
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defRouteCmd := "/usr/sbin/ipadm show-addr -p -o addr " +
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"`/usr/sbin/route get default | /usr/bin/grep interface | " +
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"/usr/bin/awk '{print $2}'`"
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out, err := exec.Command("/usr/bin/bash", "-c", defRouteCmd).Output()
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if err != nil {
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return nil, fmt.Errorf("cannot get default route: %v", err)
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}
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defInterface := strings.SplitN(string(out), "/", 2)
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defInterfaceIP := net.ParseIP(defInterface[0])
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return defInterfaceIP, nil
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}
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func listSystemIPs() []net.IP {
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var systemAddrs []net.IP
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cmd := exec.Command("/usr/sbin/ipadm", "show-addr", "-p", "-o", "addr")
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cmdReader, err := cmd.StdoutPipe()
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if err != nil {
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return nil
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}
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if err := cmd.Start(); err != nil {
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return nil
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}
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scanner := bufio.NewScanner(cmdReader)
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go func() {
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for scanner.Scan() {
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text := scanner.Text()
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nameAddrPair := strings.SplitN(text, "/", 2)
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// Let go of loopback interfaces and docker interfaces
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systemAddrs = append(systemAddrs, net.ParseIP(nameAddrPair[0]))
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}
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}()
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if err := scanner.Err(); err != nil {
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fmt.Printf("scan underwent err: %+v\n", err)
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}
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if err := cmd.Wait(); err != nil {
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fmt.Printf("run command wait: %+v\n", err)
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}
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return systemAddrs
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}
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