Golang Machine.SetProvisioned方法代码示例

func (p *Provisioner) startMachine(m *state.Machine) error {
	// TODO(dfc) the state.Info passed to environ.StartInstance remains contentious
	// however as the PA only knows one state.Info, and that info is used by MAs and
	// UAs to locate the state for this environment, it is logical to use the same
	// state.Info as the PA.
	stateInfo, apiInfo, err := p.setupAuthentication(m)
	if err != nil {
		return err
	}
	cons, err := m.Constraints()
	if err != nil {
		return err
	}
	// Generate a unique nonce for the new instance.
	uuid, err := utils.NewUUID()
	if err != nil {
		return err
	}
	// Generated nonce has the format: "machine-#:UUID". The first
	// part is a badge, specifying the tag of the machine the provisioner
	// is running on, while the second part is a random UUID.
	nonce := fmt.Sprintf("%s:%s", state.MachineTag(p.machineId), uuid.String())
	inst, err := p.environ.StartInstance(m.Id(), nonce, m.Series(), cons, stateInfo, apiInfo)
	if err != nil {
		// Set the state to error, so the machine will be skipped next
		// time until the error is resolved, but don't return an
		// error; just keep going with the other machines.
		log.Errorf("worker/provisioner: cannot start instance for machine %q: %v", m, err)
		if err1 := m.SetStatus(params.StatusError, err.Error()); err1 != nil {
			// Something is wrong with this machine, better report it back.
			log.Errorf("worker/provisioner: cannot set error status for machine %q: %v", m, err1)
			return err1
		}
		return nil
	}
	if err := m.SetProvisioned(inst.Id(), nonce); err != nil {
		// The machine is started, but we can't record the mapping in
		// state. It'll keep running while we fail out and restart,
		// but will then be detected by findUnknownInstances and
		// killed again.
		//
		// TODO(dimitern) Stop the instance right away here.
		//
		// Multiple instantiations of a given machine (with the same
		// machine ID) cannot coexist, because findUnknownInstances is
		// called before startMachines. However, if the first machine
		// had started to do work before being replaced, we may
		// encounter surprising problems.
		return err
	}
	// populate the local cache
	p.instances[m.Id()] = inst
	p.machines[inst.Id()] = m.Id()
	log.Noticef("worker/provisioner: started machine %s as instance %s", m, inst.Id())
	return nil
}

func (task *provisionerTask) startMachine(machine *state.Machine) error {
	stateInfo, apiInfo, err := task.auth.SetupAuthentication(machine)
	if err != nil {
		logger.Errorf("failed to setup authentication: %v", err)
		return err
	}
	cons, err := machine.Constraints()
	if err != nil {
		return err
	}
	// Generate a unique nonce for the new instance.
	uuid, err := utils.NewUUID()
	if err != nil {
		return err
	}
	// Generated nonce has the format: "machine-#:UUID". The first
	// part is a badge, specifying the tag of the machine the provisioner
	// is running on, while the second part is a random UUID.
	nonce := fmt.Sprintf("%s:%s", names.MachineTag(task.machineId), uuid.String())
	inst, metadata, err := task.broker.StartInstance(machine.Id(), nonce, machine.Series(), cons, stateInfo, apiInfo)
	if err != nil {
		// Set the state to error, so the machine will be skipped next
		// time until the error is resolved, but don't return an
		// error; just keep going with the other machines.
		logger.Errorf("cannot start instance for machine %q: %v", machine, err)
		if err1 := machine.SetStatus(params.StatusError, err.Error()); err1 != nil {
			// Something is wrong with this machine, better report it back.
			logger.Errorf("cannot set error status for machine %q: %v", machine, err1)
			return err1
		}
		return nil
	}
	if err := machine.SetProvisioned(inst.Id(), nonce, metadata); err != nil {
		logger.Errorf("cannot register instance for machine %v: %v", machine, err)
		// The machine is started, but we can't record the mapping in
		// state. It'll keep running while we fail out and restart,
		// but will then be detected by findUnknownInstances and
		// killed again.
		//
		// TODO(dimitern) Stop the instance right away here.
		//
		// Multiple instantiations of a given machine (with the same
		// machine ID) cannot coexist, because findUnknownInstances is
		// called before startMachines. However, if the first machine
		// had started to do work before being replaced, we may
		// encounter surprising problems.
		return err
	}
	logger.Infof("started machine %s as instance %s with hardware %q", machine, inst.Id(), metadata)
	return nil
}

// startInstance starts a new instance for the given machine.
func (s *FirewallerSuite) startInstance(c *C, m *state.Machine) instance.Instance {
	inst, hc := testing.StartInstance(c, s.Conn.Environ, m.Id())
	err := m.SetProvisioned(inst.Id(), "fake_nonce", hc)
	c.Assert(err, IsNil)
	return inst
}