72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
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package process
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import (
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"fmt"
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"net"
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"os"
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"os/exec"
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"syscall"
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"time"
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"github.com/golang/glog"
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ps "github.com/mitchellh/go-ps"
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"github.com/ncabatoff/process-exporter/proc"
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)
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func IsRespawnIfRequired(err error) bool {
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exitError, ok := err.(*exec.ExitError)
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if !ok {
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return false
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}
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waitStatus := exitError.Sys().(syscall.WaitStatus)
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glog.Warningf(`
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-------------------------------------------------------------------------------
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NGINX master process died (%v): %v
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-------------------------------------------------------------------------------
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`, waitStatus.ExitStatus(), err)
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return true
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}
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func WaitUntilPortIsAvailable(port int) {
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// we wait until the workers are killed
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for {
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conn, err := net.DialTimeout("tcp", fmt.Sprintf("0.0.0.0:%v", port), 1*time.Second)
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if err != nil {
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break
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}
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conn.Close()
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// kill nginx worker processes
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fs, err := proc.NewFS("/proc")
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procs, _ := fs.FS.AllProcs()
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for _, p := range procs {
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pn, err := p.Comm()
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if err != nil {
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glog.Errorf("unexpected error obtaining process information: %v", err)
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continue
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}
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if pn == "nginx" {
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osp, err := os.FindProcess(p.PID)
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if err != nil {
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glog.Errorf("unexpected error obtaining process information: %v", err)
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continue
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}
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osp.Signal(syscall.SIGQUIT)
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}
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}
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time.Sleep(100 * time.Millisecond)
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}
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}
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// IsNginxRunning returns true if a process with the name 'nginx' is found
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func IsNginxRunning() bool {
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processes, _ := ps.Processes()
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for _, p := range processes {
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if p.Executable() == "nginx" {
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return true
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}
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}
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return false
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}
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