Golang Unit.Service方法代碼示例

func (c *DebugHooksCommand) validateHooks(unit *state.Unit) error {
	if len(c.hooks) == 0 {
		return nil
	}
	service, err := unit.Service()
	if err != nil {
		return err
	}
	eps, err := service.Endpoints()
	if err != nil {
		return err
	}
	validHooks := make(map[string]bool)
	for _, hook := range hooks.UnitHooks() {
		validHooks[string(hook)] = true
	}
	for _, ep := range eps {
		for _, hook := range hooks.RelationHooks() {
			hook := fmt.Sprintf("%s-%s", ep.Relation.Name, hook)
			validHooks[hook] = true
		}
	}
	for _, hook := range c.hooks {
		if !validHooks[hook] {
			return fmt.Errorf("unit %q does not contain hook %q", unit.Name(), hook)
		}
	}
	return nil
}

// startUnit creates a new data value for tracking details of the
// unit and starts watching the unit for port changes. The provided
// machineId must be the id for the machine the unit was last observed
// to be assigned to.
func (fw *Firewaller) startUnit(unit *state.Unit, machineId string) error {
	service, err := unit.Service()
	if err != nil {
		return err
	}
	serviceName := service.Name()
	unitName := unit.Name()
	unitd := &unitData{
		fw:    fw,
		unit:  unit,
		ports: unit.OpenedPorts(),
	}
	fw.unitds[unitName] = unitd

	unitd.machined = fw.machineds[machineId]
	unitd.machined.unitds[unitName] = unitd
	if fw.serviceds[serviceName] == nil {
		err := fw.startService(service)
		if err != nil {
			delete(fw.unitds, unitName)
			return err
		}
	}
	unitd.serviced = fw.serviceds[serviceName]
	unitd.serviced.unitds[unitName] = unitd

	ports := make([]instance.Port, len(unitd.ports))
	copy(ports, unitd.ports)

	go unitd.watchLoop(ports)
	return nil
}

// remove will remove the supplied unit from state. It will panic if it
// observes inconsistent internal state.
func (d *Deployer) remove(unit *state.Unit) error {
	if d.deployed[unit.Name()] {
		panic("must not remove a deployed unit")
	} else if unit.Life() == state.Alive {
		panic("must not remove an Alive unit")
	}
	log.Printf("worker/deployer: removing unit %q", unit)
	if err := unit.EnsureDead(); err != nil {
		return err
	}
	service, err := unit.Service()
	if err != nil {
		return err
	}
	return service.RemoveUnit(unit)
}