func (s ConcreteScript) runOnce(params ScriptParams) (int, error) {
jobChange := params.JobChange()
hashChange := params.HashChange()
updatedPkgs := params.UpdatedPackages()
command := boshsys.Command{
Name: s.path,
Env: map[string]string{
"PATH": "/usr/sbin:/usr/bin:/sbin:/bin",
},
}
jobState, err := params.JobState()
if err != nil {
return 0, bosherr.WrapError(err, "Getting job state")
}
if jobState != "" {
command.Env["BOSH_JOB_STATE"] = jobState
}
jobNextState, err := params.JobNextState()
if err != nil {
return 0, bosherr.WrapError(err, "Getting job next state")
}
if jobNextState != "" {
command.Env["BOSH_JOB_NEXT_STATE"] = jobNextState
}
command.Args = append(command.Args, jobChange, hashChange)
command.Args = append(command.Args, updatedPkgs...)
stdout, _, _, err := s.runner.RunComplexCommand(command)
if err != nil {
return 0, bosherr.WrapError(err, "Running drain script")
}
value, err := strconv.Atoi(strings.TrimSpace(stdout))
if err != nil {
return 0, bosherr.WrapError(err, "Script did not return a signed integer")
}
return value, nil
}
