71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
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// +build darwin dragonfly freebsd linux netbsd openbsd solaris
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package executor
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import (
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"fmt"
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"os/exec"
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"syscall"
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"time"
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"golang.org/x/sys/unix"
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"github.com/armon/circbuf"
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cstructs "github.com/hashicorp/nomad/client/driver/structs"
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)
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func (e *ExecScriptCheck) setChroot(cmd *exec.Cmd) {
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if e.FSIsolation {
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if cmd.SysProcAttr == nil {
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cmd.SysProcAttr = &syscall.SysProcAttr{}
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}
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cmd.SysProcAttr.Chroot = e.taskDir
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}
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cmd.Dir = "/"
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}
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// Run runs an exec script check
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func (e *ExecScriptCheck) Run() *cstructs.CheckResult {
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buf, _ := circbuf.NewBuffer(int64(cstructs.CheckBufSize))
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cmd := exec.Command(e.cmd, e.args...)
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cmd.Stdout = buf
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cmd.Stderr = buf
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e.setChroot(cmd)
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ts := time.Now()
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if err := cmd.Start(); err != nil {
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return &cstructs.CheckResult{Err: err}
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}
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errCh := make(chan error, 2)
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go func() {
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errCh <- cmd.Wait()
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}()
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for {
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select {
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case err := <-errCh:
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endTime := time.Now()
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if err == nil {
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return &cstructs.CheckResult{
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ExitCode: 0,
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Output: string(buf.Bytes()),
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Timestamp: ts,
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}
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}
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exitCode := 1
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if exitErr, ok := err.(*exec.ExitError); ok {
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if status, ok := exitErr.Sys().(unix.WaitStatus); ok {
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exitCode = status.ExitStatus()
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}
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}
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return &cstructs.CheckResult{
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ExitCode: exitCode,
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Output: string(buf.Bytes()),
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Timestamp: ts,
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Duration: endTime.Sub(ts),
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}
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case <-time.After(e.Timeout()):
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errCh <- fmt.Errorf("timed out after waiting 30s")
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}
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}
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return nil
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}
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