// FilesystemParams returns the parameters for creating or destroying the
// given filesystem.
func FilesystemParams(
f state.Filesystem,
storageInstance state.StorageInstance,
modelUUID, controllerUUID string,
environConfig *config.Config,
poolManager poolmanager.PoolManager,
registry storage.ProviderRegistry,
) (params.FilesystemParams, error) {
var pool string
var size uint64
if stateFilesystemParams, ok := f.Params(); ok {
pool = stateFilesystemParams.Pool
size = stateFilesystemParams.Size
} else {
filesystemInfo, err := f.Info()
if err != nil {
return params.FilesystemParams{}, errors.Trace(err)
}
pool = filesystemInfo.Pool
size = filesystemInfo.Size
}
filesystemTags, err := storageTags(storageInstance, modelUUID, controllerUUID, environConfig)
if err != nil {
return params.FilesystemParams{}, errors.Annotate(err, "computing storage tags")
}
providerType, cfg, err := StoragePoolConfig(pool, poolManager, registry)
if err != nil {
return params.FilesystemParams{}, errors.Trace(err)
}
result := params.FilesystemParams{
f.Tag().String(),
"", // volume tag
size,
string(providerType),
cfg.Attrs(),
filesystemTags,
nil, // attachment params set by the caller
}
volumeTag, err := f.Volume()
if err == nil {
result.VolumeTag = volumeTag.String()
} else if err != state.ErrNoBackingVolume {
return params.FilesystemParams{}, errors.Trace(err)
}
return result, nil
}
func createFilesystemDetails(
st storageAccess, f state.Filesystem, attachments []state.FilesystemAttachment,
) (*params.FilesystemDetails, error) {
details := ¶ms.FilesystemDetails{
FilesystemTag: f.FilesystemTag().String(),
}
if volumeTag, err := f.Volume(); err == nil {
details.VolumeTag = volumeTag.String()
}
if info, err := f.Info(); err == nil {
details.Info = storagecommon.FilesystemInfoFromState(info)
}
if len(attachments) > 0 {
details.MachineAttachments = make(map[string]params.FilesystemAttachmentInfo, len(attachments))
for _, attachment := range attachments {
stateInfo, err := attachment.Info()
var info params.FilesystemAttachmentInfo
if err == nil {
info = storagecommon.FilesystemAttachmentInfoFromState(stateInfo)
}
details.MachineAttachments[attachment.Machine().String()] = info
}
}
status, err := f.Status()
if err != nil {
return nil, errors.Trace(err)
}
details.Status = common.EntityStatusFromState(status)
if storageTag, err := f.Storage(); err == nil {
storageInstance, err := st.StorageInstance(storageTag)
if err != nil {
return nil, errors.Trace(err)
}
storageDetails, err := createStorageDetails(st, storageInstance)
if err != nil {
return nil, errors.Trace(err)
}
details.Storage = storageDetails
}
return details, nil
}
// FilesystemFromState converts a state.Filesystem to params.Filesystem.
func FilesystemFromState(f state.Filesystem) (params.Filesystem, error) {
info, err := f.Info()
if err != nil {
return params.Filesystem{}, errors.Trace(err)
}
result := params.Filesystem{
f.FilesystemTag().String(),
"",
FilesystemInfoFromState(info),
}
volumeTag, err := f.Volume()
if err == nil {
result.VolumeTag = volumeTag.String()
} else if err != state.ErrNoBackingVolume {
return params.Filesystem{}, errors.Trace(err)
}
return result, nil
}