Esempio n. 1
0
func (st *mockState) StorageAttachment(
	storageTag names.StorageTag, unitTag names.UnitTag,
) (params.StorageAttachment, error) {
	if unitTag != st.unit.tag {
		return params.StorageAttachment{}, &params.Error{Code: params.CodeNotFound}
	}
	attachment, ok := st.storageAttachment[params.StorageAttachmentId{
		UnitTag:    unitTag.String(),
		StorageTag: storageTag.String(),
	}]
	if !ok {
		return params.StorageAttachment{}, &params.Error{Code: params.CodeNotFound}
	}
	if attachment.Kind == params.StorageKindUnknown {
		return params.StorageAttachment{}, &params.Error{Code: params.CodeNotProvisioned}
	}
	return attachment, nil
}
Esempio n. 2
0
// RemoveStorageAttachment removes the storage attachment with the
// specified unit and storage tags from state. This method is only
// expected to succeed if the storage attachment is Dead.
func (sa *StorageAccessor) RemoveStorageAttachment(storageTag names.StorageTag, unitTag names.UnitTag) error {
	var results params.ErrorResults
	args := params.StorageAttachmentIds{
		Ids: []params.StorageAttachmentId{{
			StorageTag: storageTag.String(),
			UnitTag:    unitTag.String(),
		}},
	}
	err := sa.facade.FacadeCall("RemoveStorageAttachments", args, &results)
	if err != nil {
		return err
	}
	if len(results.Results) != 1 {
		return errors.Errorf("expected 1 result, got %d", len(results.Results))
	}
	result := results.Results[0]
	if result.Error != nil {
		return result.Error
	}
	return nil
}
Esempio n. 3
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// WatchStorageAttachments starts a watcher for changes to the info
// of the storage attachment with the specified unit and storage tags.
func (sa *StorageAccessor) WatchStorageAttachment(storageTag names.StorageTag, unitTag names.UnitTag) (watcher.NotifyWatcher, error) {
	var results params.NotifyWatchResults
	args := params.StorageAttachmentIds{
		Ids: []params.StorageAttachmentId{{
			StorageTag: storageTag.String(),
			UnitTag:    unitTag.String(),
		}},
	}
	err := sa.facade.FacadeCall("WatchStorageAttachments", args, &results)
	if err != nil {
		return nil, err
	}
	if len(results.Results) != 1 {
		return nil, errors.Errorf("expected 1 result, got %d", len(results.Results))
	}
	result := results.Results[0]
	if result.Error != nil {
		return nil, result.Error
	}
	w := apiwatcher.NewNotifyWatcher(sa.facade.RawAPICaller(), result)
	return w, nil
}
Esempio n. 4
0
// StorageAttachment returns the storage attachment with the specified
// unit and storage tags.
func (sa *StorageAccessor) StorageAttachment(storageTag names.StorageTag, unitTag names.UnitTag) (params.StorageAttachment, error) {
	if sa.facade.BestAPIVersion() < 2 {
		return params.StorageAttachment{}, errors.NotImplementedf("StorageAttachment() (need V2+)")
	}
	args := params.StorageAttachmentIds{
		Ids: []params.StorageAttachmentId{{
			StorageTag: storageTag.String(),
			UnitTag:    unitTag.String(),
		}},
	}
	var results params.StorageAttachmentResults
	err := sa.facade.FacadeCall("StorageAttachments", args, &results)
	if err != nil {
		return params.StorageAttachment{}, errors.Trace(err)
	}
	if len(results.Results) != 1 {
		panic(errors.Errorf("expected 1 result, got %d", len(results.Results)))
	}
	result := results.Results[0]
	if result.Error != nil {
		return params.StorageAttachment{}, result.Error
	}
	return result.Result, nil
}