proxmox-backup/src/api2/tape/changer.rs

169 lines
4.0 KiB
Rust

use std::path::Path;
use anyhow::Error;
use serde_json::Value;
use proxmox::api::{api, Router, SubdirMap};
use proxmox::list_subdirs_api_method;
use crate::{
config,
api2::types::{
CHANGER_NAME_SCHEMA,
ScsiTapeChanger,
TapeDeviceInfo,
MtxStatusEntry,
MtxEntryKind,
},
tape::{
TAPE_STATUS_DIR,
Inventory,
linux_tape_changer_list,
changer::{
OnlineStatusMap,
ElementStatus,
ScsiMediaChange,
mtx_status_to_online_set,
},
},
};
#[api(
input: {
properties: {
name: {
schema: CHANGER_NAME_SCHEMA,
},
},
},
returns: {
description: "A status entry for each drive and slot.",
type: Array,
items: {
type: MtxStatusEntry,
},
},
)]
/// Get tape changer status
pub async fn get_status(name: String) -> Result<Vec<MtxStatusEntry>, Error> {
let (config, _digest) = config::drive::config()?;
let mut changer_config: ScsiTapeChanger = config.lookup("changer", &name)?;
let status = tokio::task::spawn_blocking(move || {
changer_config.status()
}).await??;
let state_path = Path::new(TAPE_STATUS_DIR);
let mut inventory = Inventory::load(state_path)?;
let mut map = OnlineStatusMap::new(&config)?;
let online_set = mtx_status_to_online_set(&status, &inventory);
map.update_online_status(&name, online_set)?;
inventory.update_online_status(&map)?;
let mut list = Vec::new();
for (id, drive_status) in status.drives.iter().enumerate() {
let entry = MtxStatusEntry {
entry_kind: MtxEntryKind::Drive,
entry_id: id as u64,
label_text: match &drive_status.status {
ElementStatus::Empty => None,
ElementStatus::Full => Some(String::new()),
ElementStatus::VolumeTag(tag) => Some(tag.to_string()),
},
loaded_slot: drive_status.loaded_slot,
};
list.push(entry);
}
for (id, slot_info) in status.slots.iter().enumerate() {
let entry = MtxStatusEntry {
entry_kind: if slot_info.import_export {
MtxEntryKind::ImportExport
} else {
MtxEntryKind::Slot
},
entry_id: id as u64 + 1,
label_text: match &slot_info.status {
ElementStatus::Empty => None,
ElementStatus::Full => Some(String::new()),
ElementStatus::VolumeTag(tag) => Some(tag.to_string()),
},
loaded_slot: None,
};
list.push(entry);
}
Ok(list)
}
#[api(
input: {
properties: {
name: {
schema: CHANGER_NAME_SCHEMA,
},
from: {
description: "Source slot number",
minimum: 1,
},
to: {
description: "Destination slot number",
minimum: 1,
},
},
},
)]
/// Transfers media from one slot to another
pub async fn transfer(
name: String,
from: u64,
to: u64,
) -> Result<(), Error> {
let (config, _digest) = config::drive::config()?;
let mut changer_config: ScsiTapeChanger = config.lookup("changer", &name)?;
tokio::task::spawn_blocking(move || {
changer_config.transfer(from, to)
}).await?
}
#[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 = &[
(
"scan",
&Router::new()
.get(&API_METHOD_SCAN_CHANGERS)
),
];
pub const ROUTER: Router = Router::new()
.get(&list_subdirs_api_method!(SUBDIRS))
.subdirs(SUBDIRS);