[pbs-devel] [PATCH proxmox-backup 3/3] admin/datastore: add more info to status call

[Dietmar Maurer]

This change makes the API call very slow. because it scans over the whole directory tree.
Is this really necessary?


> On 10/23/2020 4:32 PM Dominik Csapak <d.csapak at proxmox.com> wrote:
> 
>  
> add also the snapshot counts as well as the status of the last garbage
> collection
> 
> Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
> ---
>  src/api2/admin/datastore.rs | 61 +++++++++++++++++++++++++++++++++++--
>  1 file changed, 58 insertions(+), 3 deletions(-)
> 
> diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
> index feeff8af..e1a0aacc 100644
> --- a/src/api2/admin/datastore.rs
> +++ b/src/api2/admin/datastore.rs
> @@ -423,6 +423,37 @@ pub fn list_snapshots (
>      Ok(snapshots)
>  }
>  
> +// returns a map from type to (group_count, snapshot_count)
> +fn get_snaphots_count(store: &DataStore) -> Result<HashMap<String, (usize, usize)>, Error> {
> +    let base_path = store.base_path();
> +    let backup_list = BackupInfo::list_backups(&base_path)?;
> +    let mut groups = HashSet::new();
> +    let mut result: HashMap<String, (usize, usize)> = HashMap::new();
> +    for info in backup_list {
> +        let group = info.backup_dir.group();
> +
> +        let id = group.backup_id();
> +        let backup_type = group.backup_type();
> +
> +        let mut new_id = false;
> +
> +        if groups.insert(format!("{}-{}", &backup_type, &id)) {
> +            new_id = true;
> +        }
> +
> +        if let Some(mut counts) = result.get_mut(backup_type) {
> +            counts.1 += 1;
> +            if new_id {
> +                counts.0 +=1;
> +            }
> +        } else {
> +            result.insert(backup_type.to_string(), (1, 1));
> +        }
> +    }
> +
> +    Ok(result)
> +}
> +
>  #[api(
>      input: {
>          properties: {
> @@ -432,7 +463,21 @@ pub fn list_snapshots (
>          },
>      },
>      returns: {
> -        type: StorageStatus,
> +        description: "The overall Datastore status and information.",
> +        type: Object,
> +        properties: {
> +            storage: {
> +                type: StorageStatus,
> +            },
> +            counts: {
> +                description: "Group and Snapshot counts per Type",
> +                type: Object,
> +                properties: { },
> +            },
> +            "gc-status": {
> +                type: GarbageCollectionStatus,
> +            },
> +        },
>      },
>      access: {
>          permission: &Permission::Privilege(&["datastore", "{store}"], PRIV_DATASTORE_AUDIT | PRIV_DATASTORE_BACKUP, true),
> @@ -443,9 +488,19 @@ pub fn status(
>      store: String,
>      _info: &ApiMethod,
>      _rpcenv: &mut dyn RpcEnvironment,
> -) -> Result<StorageStatus, Error> {
> +) -> Result<Value, Error> {
>      let datastore = DataStore::lookup_datastore(&store)?;
> -    crate::tools::disks::disk_usage(&datastore.base_path())
> +    let storage_status = crate::tools::disks::disk_usage(&datastore.base_path())?;
> +    let counts = get_snaphots_count(&datastore)?;
> +    let gc_status = datastore.last_gc_status();
> +
> +    let res = json!({
> +        "storage": storage_status,
> +        "counts": counts,
> +        "gc-status": gc_status,
> +    });
> +
> +    Ok(res)
>  }
>  
>  #[api(
> -- 
> 2.20.1
> 
> 
> 
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