// RemoteTimeout is the same as Remote, but with a custom timeout rather than
// the default.
func RemoteTimeout(s *scen.Scenario, stdout, stderr io.Writer, addr string, timeout time.Duration) (float64, error) {
client, err := cloudlus.Dial(addr)
if err != nil {
return math.Inf(1), err
}
defer client.Close()
execfn := func(scn *scen.Scenario) (float64, error) {
j, err := BuildRemoteJob(scn, objfile)
if err != nil {
return math.Inf(1), fmt.Errorf("failed to build remote job: %v", err)
}
j.Timeout = timeout
// closing this channel might cause a send on a closed channel if the
// timeout in the select below fires before the goroutine completes.
done := make(chan bool, 1)
go func() {
j, err = client.Run(j)
done <- true
}()
select {
case <-done:
if err != nil {
return math.Inf(1), fmt.Errorf("job execution failed: %v", err)
}
case <-time.After(j.Timeout + 1*time.Hour):
return math.Inf(1), fmt.Errorf("job rpc timeout limit reached")
}
if err := writeLogs(j, stdout, stderr); err != nil {
return math.Inf(1), fmt.Errorf("job logging failed: %v", err)
}
data, err := client.RetrieveOutfileData(j, objfile)
if err != nil {
return math.Inf(1), fmt.Errorf("couldn't find objective result file: %v", err)
}
val, err := strconv.ParseFloat(strings.TrimSpace(string(data)), 64)
if err != nil {
return math.Inf(1), fmt.Errorf("invalid objective string '%s': %v", data, err)
}
return val, nil
}
return s.CalcTotalObjective(execfn)
}
// Local runs scenario scn on the local machine connecting the simulation's
// standard out and error to stdout and stderr respectively. The file names
// of the generated cyclus input file and database are returned along with the
// objective value.
func Local(scn *scen.Scenario, stdout, stderr io.Writer) (obj float64, err error) {
execfn := func(s *scen.Scenario) (float64, error) {
// generate cyclus input file and run cyclus
ui := uuid.NewRandom()
infile := ui.String() + ".cyclus.xml"
dbfile := ui.String() + ".sqlite"
data, err := s.GenCyclusInfile()
if err != nil {
return math.Inf(1), err
}
err = ioutil.WriteFile(infile, data, 0644)
if err != nil {
return math.Inf(1), err
}
cmd := exec.Command("cyclus", infile, "-o", dbfile)
cmd.Stdout = stdout
cmd.Stderr = stderr
if err := cmd.Run(); err != nil {
return math.Inf(1), err
}
defer os.Remove(dbfile)
// post process cyclus output db
db, err := sql.Open("sqlite3", dbfile)
if err != nil {
return math.Inf(1), err
}
defer db.Close()
simids, err := post.Process(db)
if err != nil {
return math.Inf(1), err
}
return s.CalcObjective(dbfile, simids[0])
}
return scn.CalcTotalObjective(execfn)
}