// runUpgrades runs the upgrade operations for each job type and updates the updatedToVersion on success.
func (a *MachineAgent) runUpgrades(
st *state.State,
apiState *api.State,
jobs []params.MachineJob,
agentConfig agent.Config,
) error {
from := version.Current
from.Number = agentConfig.UpgradedToVersion()
if from == version.Current {
logger.Infof("upgrade to %v already completed.", version.Current)
return nil
}
var err error
writeErr := a.ChangeConfig(func(agentConfig agent.ConfigSetter) {
context := upgrades.NewContext(agentConfig, apiState, st)
for _, job := range jobs {
target := upgradeTarget(job)
if target == "" {
continue
}
logger.Infof("starting upgrade from %v to %v for %v %q", from, version.Current, target, a.Tag())
if err = upgrades.PerformUpgrade(from.Number, target, context); err != nil {
err = fmt.Errorf("cannot perform upgrade from %v to %v for %v %q: %v", from, version.Current, target, a.Tag(), err)
return
}
}
agentConfig.SetUpgradedToVersion(version.Current.Number)
})
if writeErr != nil {
return fmt.Errorf("cannot write updated agent configuration: %v", writeErr)
}
return nil
}