高效封禁：利用Go封装功能，提升封禁操作效率

// Banned ban user, if time == 0,the timeout is not set
func (e *Enforcer) Banned(id string, service string, level int, time int64) error {
	if id == "" || service == "" {
		return fmt.Errorf("parameter cannot be nil")
	}
	if level < 1 {
		return fmt.Errorf("unexpected level = %v, level must large or equal 1", level)
	}
	err := e.adapter.SetStr(e.spliceBannedKey(id, service), strconv.Itoa(level), time)
	if err != nil {
		return err
	}
	// callback
	e.logger.Ban(e.loginType, id, service, level, time)
	if e.watcher != nil {
		e.watcher.Ban(e.loginType, id, service, level, time)
	}
	return nil
}

// UnBanned Unblock user account
func (e *Enforcer) UnBanned(id string, services ...string) error {
	if id == "" {
		return fmt.Errorf("parmeter id can not be nil")
	}
	if len(services) == 0 {
		return fmt.Errorf("parmeter services length can not be 0")
	}
	for _, service := range services {
		err := e.adapter.DeleteStr(e.spliceBannedKey(id, service))
		if err != nil {
			return err
		}
		e.logger.UnBan(e.loginType, id, service)
		if e.watcher != nil {
			e.watcher.UnBan(e.loginType, id, service)
		}
	}
	return nil
}

// IsBanned if banned return true, else return false
func (e *Enforcer) IsBanned(id string, services string) bool {
	s := e.adapter.GetStr(e.spliceBannedKey(id, services))
	return s != ""
}

// GetBannedLevel get banned level
func (e *Enforcer) GetBannedLevel(id string, service string) (int64, error) {
	str := e.adapter.GetStr(e.spliceBannedKey(id, service))
	if str == "" {
		return 0, fmt.Errorf("loginId = %v, service = %v is not banned", id, service)
	}
	time, err := strconv.ParseInt(str, 10, 64)
	if err != nil {
		return 0, err
	}
	return time, nil
}

// GetBannedTime get banned time
func (e *Enforcer) GetBannedTime(id string, service string) int64 {
	timeout := e.adapter.GetStrTimeout(e.spliceBannedKey(id, service))
	return timeout
}

func TestEnforcer_Banned(t *testing.T) {
	err, enforcer, _ := NewTestEnforcer(t)
	if err != nil {
		t.Fatalf("NewTestEnforcer() failed: %v", err)
	}
	err = enforcer.Banned("1", "comment", 1, 100)
	if err != nil {
		t.Fatalf("Banned() failed: %v", err)
	}
	isBanned := enforcer.IsBanned("1", "comment")
	if !isBanned {
		t.Errorf("unexpected isBanned is false")
	}
	err = enforcer.UnBanned("1", "comment")
	if err != nil {
		t.Fatalf("UnBanned() failed: %v", err)
	}
	isBanned = enforcer.IsBanned("1", "comment")
	if isBanned {
		t.Errorf("unexpected isBanned is false")
	}
}