Golang State.AddOneMachine方法代碼示例

func addMachineForUnit(st *state.State, unit *state.Unit, placement *instance.Placement, networks []string) (*state.Machine, error) {
	unitCons, err := unit.Constraints()
	if err != nil {
		return nil, err
	}
	var containerType instance.ContainerType
	var mid, placementDirective string
	// Extract container type and parent from container placement directives.
	if containerType, err = instance.ParseContainerType(placement.Scope); err == nil {
		mid = placement.Directive
	} else {
		switch placement.Scope {
		case st.EnvironUUID():
			placementDirective = placement.Directive
		case instance.MachineScope:
			mid = placement.Directive
		default:
			return nil, errors.Errorf("invalid environment UUID %q", placement.Scope)
		}
	}

	// Create any new machine marked as dirty so that
	// nothing else will grab it before we assign the unit to it.

	// If a container is to be used, create it.
	if containerType != "" {
		template := state.MachineTemplate{
			Series:            unit.Series(),
			Jobs:              []state.MachineJob{state.JobHostUnits},
			Dirty:             true,
			Constraints:       *unitCons,
			RequestedNetworks: networks,
		}
		return st.AddMachineInsideMachine(template, mid, containerType)
	}
	// If a placement directive is to be used, do that here.
	if placementDirective != "" {
		template := state.MachineTemplate{
			Series:            unit.Series(),
			Jobs:              []state.MachineJob{state.JobHostUnits},
			Dirty:             true,
			Constraints:       *unitCons,
			RequestedNetworks: networks,
			Placement:         placementDirective,
		}
		return st.AddOneMachine(template)
	}

	// Otherwise use an existing machine.
	return st.Machine(mid)
}

// initBootstrapMachine initializes the initial bootstrap machine in state.
func initBootstrapMachine(c agent.ConfigSetter, st *state.State, args InitializeStateParams) (*state.Machine, error) {
	logger.Infof("initialising bootstrap machine with config: %+v", args)

	jobs := make([]state.MachineJob, len(args.BootstrapMachineJobs))
	for i, job := range args.BootstrapMachineJobs {
		machineJob, err := machineJobFromParams(job)
		if err != nil {
			return nil, errors.Errorf("invalid bootstrap machine job %q: %v", job, err)
		}
		jobs[i] = machineJob
	}
	var hardware instance.HardwareCharacteristics
	if args.BootstrapMachineHardwareCharacteristics != nil {
		hardware = *args.BootstrapMachineHardwareCharacteristics
	}
	m, err := st.AddOneMachine(state.MachineTemplate{
		Addresses:               args.BootstrapMachineAddresses,
		Series:                  series.HostSeries(),
		Nonce:                   agent.BootstrapNonce,
		Constraints:             args.BootstrapMachineConstraints,
		InstanceId:              args.BootstrapMachineInstanceId,
		HardwareCharacteristics: hardware,
		Jobs: jobs,
	})
	if err != nil {
		return nil, errors.Errorf("cannot create bootstrap machine in state: %v", err)
	}
	if m.Id() != agent.BootstrapMachineId {
		return nil, errors.Errorf("bootstrap machine expected id 0, got %q", m.Id())
	}
	// Read the machine agent's password and change it to
	// a new password (other agents will change their password
	// via the API connection).
	logger.Debugf("create new random password for machine %v", m.Id())

	newPassword, err := utils.RandomPassword()
	if err != nil {
		return nil, err
	}
	if err := m.SetPassword(newPassword); err != nil {
		return nil, err
	}
	if err := m.SetMongoPassword(newPassword); err != nil {
		return nil, err
	}
	c.SetPassword(newPassword)
	return m, nil
}

// initBootstrapMachine initializes the initial bootstrap machine in state.
func initBootstrapMachine(c ConfigSetter, st *state.State, cfg BootstrapMachineConfig) (*state.Machine, error) {
	logger.Infof("initialising bootstrap machine with config: %+v", cfg)

	jobs := make([]state.MachineJob, len(cfg.Jobs))
	for i, job := range cfg.Jobs {
		machineJob, err := state.MachineJobFromParams(job)
		if err != nil {
			return nil, fmt.Errorf("invalid bootstrap machine job %q: %v", job, err)
		}
		jobs[i] = machineJob
	}
	m, err := st.AddOneMachine(state.MachineTemplate{
		Addresses:               cfg.Addresses,
		Series:                  version.Current.Series,
		Nonce:                   BootstrapNonce,
		Constraints:             cfg.Constraints,
		InstanceId:              cfg.InstanceId,
		HardwareCharacteristics: cfg.Characteristics,
		Jobs: jobs,
	})
	if err != nil {
		return nil, fmt.Errorf("cannot create bootstrap machine in state: %v", err)
	}
	if m.Id() != BootstrapMachineId {
		return nil, fmt.Errorf("bootstrap machine expected id 0, got %q", m.Id())
	}
	// Read the machine agent's password and change it to
	// a new password (other agents will change their password
	// via the API connection).
	logger.Debugf("create new random password for machine %v", m.Id())

	newPassword, err := utils.RandomPassword()
	if err != nil {
		return nil, err
	}
	if err := m.SetPassword(newPassword); err != nil {
		return nil, err
	}
	if err := m.SetMongoPassword(newPassword); err != nil {
		return nil, err
	}
	c.SetPassword(newPassword)
	return m, nil
}