cleanup: move scan changers API implementation

src/api2/tape/mod.rs

@@ -1,8 +1,21 @@
 //! Tape Backup Management
 
-use proxmox::api::router::SubdirMap;
-use proxmox::api::Router;
-use proxmox::list_subdirs_api_method;
+use anyhow::Error;
+use serde_json::Value;
+
+use proxmox::{
+    api::{
+        api,
+        router::SubdirMap,
+        Router,
+    },
+    list_subdirs_api_method,
+};
+
+use crate::{
+    api2::types::TapeDeviceInfo,
+    tape::linux_tape_changer_list,
+};
 
 pub mod drive;
 pub mod changer;
@@ -10,7 +23,27 @@ pub mod media;
 pub mod backup;
 pub mod restore;
 
-pub const SUBDIRS: SubdirMap = &[
+#[api(
+    input: {
+        properties: {},
+    },
+    returns: {
+        description: "The list of autodetected tape changers.",
+        type: Array,
+        items: {
+            type: TapeDeviceInfo,
+        },
+    },
+)]
+/// Scan for SCSI tape changers
+pub fn scan_changers(_param: Value) -> Result<Vec<TapeDeviceInfo>, Error> {
+
+    let list = linux_tape_changer_list();
+
+    Ok(list)
+}
+
+const SUBDIRS: SubdirMap = &[
     ("backup", &backup::ROUTER),
     ("changer", &changer::ROUTER),
     ("drive", &drive::ROUTER),
@@ -19,7 +52,7 @@ pub const SUBDIRS: SubdirMap = &[
     (
         "scan-changers",
         &Router::new()
-            .get(&changer::API_METHOD_SCAN_CHANGERS),
+            .get(&API_METHOD_SCAN_CHANGERS),
     ),
 ];