github
/
k3s
mirror of https://github.com/k3s-io/k3s
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Revert "controller/volume: simplify sync logic in syncBoundClaim" 

This reverts commit 67787caeeb.
pull/6/head
Paul Morie 2016-07-30 14:00:09 -04:00
parent f0fa9e588f
commit a6d0dc0529
1 changed files with 42 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
pkg/controller/volume/persistentvolume/controller.go
View File

@ -258,55 +258,60 @@ func (ctrl *PersistentVolumeController) syncBoundClaim(claim *api.PersistentVolu
// [Unit test set 3]
if claim.Spec.VolumeName == "" {
// Claim was bound before but not any more.
_, err := ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimLost", "Bound claim has lost reference to PersistentVolume. Data on the volume is lost!")
return err
if _, err := ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimLost", "Bound claim has lost reference to PersistentVolume. Data on the volume is lost!"); err != nil {
return err
}
return nil
}
obj, found, err := ctrl.volumes.store.GetByKey(claim.Spec.VolumeName)
if err != nil {
return err
}
if !found {
// Claim is bound to a non-existing volume.
_, err = ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimLost", "Bound claim has lost its PersistentVolume. Data on the volume is lost!")
return err
}
volume, ok := obj.(*api.PersistentVolume)
if !ok {
return fmt.Errorf("Cannot convert object from volume cache to volume %q!?: %+v", claim.Spec.VolumeName, obj)
}
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: volume %q found: %s", claimToClaimKey(claim), claim.Spec.VolumeName, getVolumeStatusForLogging(volume))
if volume.Spec.ClaimRef == nil {
// Claim is bound but volume has come unbound.
// Or, a claim was bound and the controller has not received updated
// volume yet. We can't distinguish these cases.
// Bind the volume again and set all states to Bound.
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: volume is unbound, fixing", claimToClaimKey(claim))
if err = ctrl.bind(volume, claim); err != nil {
// Objects not saved, next syncPV or syncClaim will try again
if _, err = ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimLost", "Bound claim has lost its PersistentVolume. Data on the volume is lost!"); err != nil {
return err
}
return nil
}
if volume.Spec.ClaimRef.UID == claim.UID {
// All is well
// NOTE: syncPV can handle this so it can be left out.
// NOTE: bind() call here will do nothing in most cases as
// everything should be already set.
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: claim is already correctly bound", claimToClaimKey(claim))
if err = ctrl.bind(volume, claim); err != nil {
// Objects not saved, next syncPV or syncClaim will try again
return err
} else {
volume, ok := obj.(*api.PersistentVolume)
if !ok {
return fmt.Errorf("Cannot convert object from volume cache to volume %q!?: %+v", claim.Spec.VolumeName, obj)
}
return nil
}
// Claim is bound but volume has a different claimant.
// Set the claim phase to 'Lost', which is a terminal
// phase.
_, err = ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimMisbound", "Two claims are bound to the same volume, this one is bound incorrectly")
return err
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: volume %q found: %s", claimToClaimKey(claim), claim.Spec.VolumeName, getVolumeStatusForLogging(volume))
if volume.Spec.ClaimRef == nil {
// Claim is bound but volume has come unbound.
// Or, a claim was bound and the controller has not received updated
// volume yet. We can't distinguish these cases.
// Bind the volume again and set all states to Bound.
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: volume is unbound, fixing", claimToClaimKey(claim))
if err = ctrl.bind(volume, claim); err != nil {
// Objects not saved, next syncPV or syncClaim will try again
return err
}
return nil
} else if volume.Spec.ClaimRef.UID == claim.UID {
// All is well
// NOTE: syncPV can handle this so it can be left out.
// NOTE: bind() call here will do nothing in most cases as
// everything should be already set.
glog.V(4).Infof("synchronizing bound PersistentVolumeClaim[%s]: claim is already correctly bound", claimToClaimKey(claim))
if err = ctrl.bind(volume, claim); err != nil {
// Objects not saved, next syncPV or syncClaim will try again
return err
}
return nil
} else {
// Claim is bound but volume has a different claimant.
// Set the claim phase to 'Lost', which is a terminal
// phase.
if _, err = ctrl.updateClaimPhaseWithEvent(claim, api.ClaimLost, api.EventTypeWarning, "ClaimMisbound", "Two claims are bound to the same volume, this one is bound incorrectly"); err != nil {
return err
}
return nil
}
}
}
// syncVolume is the main controller method to decide what to do with a volume.