func (task *provisionerTask) setErrorStatus(message string, machine *apiprovisioner.Machine, err error) error {
logger.Errorf(message, machine, err)
if err1 := machine.SetStatus(params.StatusError, err.Error(), nil); 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
}
func (task *provisionerTask) provisioningInfo(machine *apiprovisioner.Machine) (*provisioningInfo, error) {
stateInfo, apiInfo, err := task.auth.SetupAuthentication(machine)
if err != nil {
logger.Errorf("failed to setup authentication: %v", err)
return nil, err
}
// Generated a nonce for the new instance, with 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.
uuid, err := utils.NewUUID()
if err != nil {
return nil, err
}
// ProvisioningInfo is new in 1.20; wait for the API server to be upgraded
// so we don't spew errors on upgrade.
var pInfo *params.ProvisioningInfo
for {
if pInfo, err = machine.ProvisioningInfo(); err == nil {
break
}
if params.IsCodeNotImplemented(err) {
logger.Infof("waiting for state server to be upgraded")
select {
case <-task.tomb.Dying():
return nil, tomb.ErrDying
case <-time.After(15 * time.Second):
continue
}
}
return nil, err
}
includeNetworks := pInfo.IncludeNetworks
excludeNetworks := pInfo.ExcludeNetworks
nonce := fmt.Sprintf("%s:%s", task.machineTag, uuid.String())
machineConfig := environs.NewMachineConfig(machine.Id(), nonce, includeNetworks, excludeNetworks, stateInfo, apiInfo)
return &provisioningInfo{
Constraints: pInfo.Constraints,
Series: pInfo.Series,
Placement: pInfo.Placement,
MachineConfig: machineConfig,
}, nil
}
func (task *provisionerTask) startMachine(machine *apiprovisioner.Machine) error {
provisioningInfo, err := task.provisioningInfo(machine)
if err != nil {
return err
}
possibleTools, err := task.possibleTools(provisioningInfo.Series, provisioningInfo.Constraints)
if err != nil {
return task.setErrorStatus("cannot find tools for machine %q: %v", machine, err)
}
inst, metadata, networkInfo, err := task.broker.StartInstance(environs.StartInstanceParams{
Constraints: provisioningInfo.Constraints,
Tools: possibleTools,
MachineConfig: provisioningInfo.MachineConfig,
Placement: provisioningInfo.Placement,
DistributionGroup: machine.DistributionGroup,
})
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.
return task.setErrorStatus("cannot start instance for machine %q: %v", machine, err)
}
nonce := provisioningInfo.MachineConfig.MachineNonce
networks, ifaces := task.prepareNetworkAndInterfaces(networkInfo)
err = machine.SetInstanceInfo(inst.Id(), nonce, metadata, networks, ifaces)
if err != nil && params.IsCodeNotImplemented(err) {
return fmt.Errorf("cannot provision instance %v for machine %q with networks: not implemented", inst.Id(), machine)
} else if err == nil {
logger.Infof("started machine %s as instance %s with hardware %q, networks %v, interfaces %v", machine, inst.Id(), metadata, networks, ifaces)
return nil
}
// We need to stop the instance right away here, set error status and go on.
task.setErrorStatus("cannot register instance for machine %v: %v", machine, err)
if err := task.broker.StopInstances([]instance.Instance{inst}); err != nil {
// We cannot even stop the instance, log the error and quit.
logger.Errorf("cannot stop instance %q for machine %v: %v", inst.Id(), machine, err)
return err
}
return nil
}