tyler/proxmox-backup
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datastore: cleanup open and load config only once

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Force consumers to use the lookup_datastore method instead of
potentially opening a datastore twice, and pass the config we have
already loaded into open_with_path, removing the need for open(1).

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
This commit is contained in:
Stefan Reiter 2020-10-19 16:45:22 +02:00 committed by Dietmar Maurer
parent 455f2ad228
commit df729017b4
1 changed files with 4 additions and 14 deletions
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18
src/backup/datastore.rs
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@ -46,17 +46,18 @@ impl DataStore {
let (config, _digest) = datastore::config()?;
let config: datastore::DataStoreConfig = config.lookup("datastore", name)?;
let path = PathBuf::from(&config.path);
let mut map = DATASTORE_MAP.lock().unwrap();
if let Some(datastore) = map.get(name) {
// Compare Config - if changed, create new Datastore object!
if datastore.chunk_store.base == PathBuf::from(&config.path) {
if datastore.chunk_store.base == path {
return Ok(datastore.clone());
}
}
let datastore = DataStore::open(name)?;
let datastore = DataStore::open_with_path(name, &path, config)?;
let datastore = Arc::new(datastore);
map.insert(name.to_string(), datastore.clone());
@ -64,18 +65,7 @@ impl DataStore {
Ok(datastore)
}
pub fn open(store_name: &str) -> Result<Self, Error> {
let (config, _digest) = datastore::config()?;
let (_, store_config) = config.sections.get(store_name)
.ok_or(format_err!("no such datastore '{}'", store_name))?;
let path = store_config["path"].as_str().unwrap();
Self::open_with_path(store_name, Path::new(path))
}
pub fn open_with_path(store_name: &str, path: &Path) -> Result<Self, Error> {
fn open_with_path(store_name: &str, path: &Path, config: DataStoreConfig) -> Result<Self, Error> {
let chunk_store = ChunkStore::open(store_name, path)?;
let gc_status = GarbageCollectionStatus::default();