[PATCH proxmox-backup v2 13/14] bin: manager: allow listing of extended usage statistics via cli

[Christian Ebner <c.ebner@proxmox.com>]

Implements the command to expose the statistics provided by the
list-statistics api endpoint via `proxmox-backup-manager datastore
list-statistics` subcommand.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 src/bin/proxmox_backup_manager/datastore.rs | 47 +++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/src/bin/proxmox_backup_manager/datastore.rs b/src/bin/proxmox_backup_manager/datastore.rs
index 4c1d9daf5..3063c872e 100644
--- a/src/bin/proxmox_backup_manager/datastore.rs
+++ b/src/bin/proxmox_backup_manager/datastore.rs
@@ -347,9 +347,56 @@ async fn s3_refresh(mut param: Value, rpcenv: &mut dyn RpcEnvironment) -> Result
     Ok(())
 }
 
+#[api(
+    input: {
+        properties: {
+            store: {
+                schema: DATASTORE_SCHEMA,
+            },
+            "output-format": {
+                schema: OUTPUT_FORMAT,
+                optional: true,
+            },
+        }
+    }
+)]
+/// List datastore statistics
+fn list_statistics(param: Value, rpcenv: &mut dyn RpcEnvironment) -> Result<Value, Error> {
+    let output_format = get_output_format(&param);
+
+    let info = &api2::admin::datastore::API_METHOD_LIST_STATISTICS;
+    let mut data = match info.handler {
+        ApiHandler::Sync(handler) => (handler)(param, info, rpcenv)?,
+        _ => unreachable!(),
+    };
+
+    let options = default_table_format_options().column_config(vec![
+        ColumnConfig::new("ns").header("Namespace"),
+        ColumnConfig::new("backup-type").header("Type"),
+        ColumnConfig::new("backup-id").header("ID"),
+        ColumnConfig::new("backup-time").header("Time"),
+        ColumnConfig::new("logical-size").header("Logical Size"),
+        ColumnConfig::new("raw-size").header("Raw Size"),
+        ColumnConfig::new("unique-raw-size").header("Unique Raw Size"),
+        ColumnConfig::new("reference-count").header("Reference Count"),
+        ColumnConfig::new("unique-count").header("Unique Count"),
+        ColumnConfig::new("dedup-count").header("Deduplication Count"),
+    ]);
+
+    format_and_print_result_full(&mut data, &info.returns, &output_format, &options);
+
+    Ok(Value::Null)
+}
+
 pub fn datastore_commands() -> CommandLineInterface {
     let cmd_def = CliCommandMap::new()
         .insert("list", CliCommand::new(&API_METHOD_LIST_DATASTORES))
+        .insert(
+            "list-statistics",
+            CliCommand::new(&API_METHOD_LIST_STATISTICS)
+                .arg_param(&["store"])
+                .completion_cb("store", pbs_config::datastore::complete_datastore_name),
+        )
         .insert(
             "mount",
             CliCommand::new(&API_METHOD_MOUNT_DATASTORE)
-- 
2.47.3