func initdb() {
if *showquery {
// don't need a database for printing queries
return
} else if *dbname == "" {
log.Fatal("must specify database with -db flag")
}
var err error
db, err = sql.Open("sqlite3", *dbname)
fatalif(err)
if *simidstr == "" {
ids, err := query.SimIds(db)
fatalif(err)
simid = ids[0]
} else {
simid = uuid.Parse(*simidstr)
if simid == nil {
log.Fatalf("invalid simid '%s'", *simidstr)
}
}
post.Process(db)
}
// 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)
}