/
main.go
83 lines (67 loc) · 1.89 KB
/
main.go
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package main
import (
"database/sql"
"errors"
"fmt"
"os"
"time"
"github.com/go-ini/ini"
_ "github.com/go-sql-driver/mysql"
"github.com/imnnsu/go-mysql-fsm/fsm"
)
func getURI() (string, error) {
conf, err := ini.LoadSources(ini.LoadOptions{AllowBooleanKeys: true}, os.Getenv("HOME")+"/.my.cnf")
if err != nil {
return "", err
}
for _, s := range conf.Sections() {
if s.Key("user").String() == "root" {
return fmt.Sprintf("root:%s@tcp(127.0.0.1:3306)/fsm", s.Key("password")), nil
}
}
return "", errors.New("password for root is not found")
}
func transition(routineID string, fsm *fsm.FSM, event string) {
state, err := fsm.Current()
if err != nil {
panic(err)
}
fmt.Printf("#%v | %-12v |\n", routineID, state)
fmt.Printf("#%v | | -> %v\n", routineID, event)
fsm.Event(event)
fmt.Printf("#%v | | <- %v\n", routineID, event)
state, err = fsm.Current()
if err != nil {
panic(err)
}
fmt.Printf("#%v | %-12v |\n", routineID, state)
}
func updateStateRoutine(routineID string, f *fsm.FSM, events []string) {
for _, event := range events {
transition(routineID, f, event)
}
}
func main() {
uri, err := getURI()
if err != nil {
panic(err)
}
db, err := sql.Open("mysql", uri)
if err != nil {
panic(err)
}
defer db.Close()
events := []fsm.Event{
{Name: "NotReady", Src: []string{"Running"}, Dst: "Error"},
{Name: "Ready", Src: []string{"Initializing", "Error"}, Dst: "Running"},
{Name: "Stop", Src: []string{"Initializing", "Running", "Error"}, Dst: "Stopped"},
{Name: "Delete", Src: []string{"Stopped"}, Dst: "Deleted"},
}
config := fsm.NewConfig(db, "task", "state", "Initializing", events)
f := fsm.NewFSM(config, "1")
f.Initialize()
go updateStateRoutine("1", f, []string{"Ready"})
go updateStateRoutine("2", f, []string{"Ready", "NotReady"})
go updateStateRoutine("3", f, []string{"Stop", "Delete"})
time.Sleep(1 * time.Second)
}