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api2/tape/drive: wrap some api calls in run_drive_blocking_task

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those calls could also block, so we have to run them in a blocking
tokio task, as to not block the current thread

nice side effect is that we now also update the state for that
drive in those instances

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2021-02-18 15:40:26 +01:00 committed by Dietmar Maurer
parent 47a7241410
commit 41e66bfaf6
1 changed files with 35 additions and 29 deletions
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64
src/api2/tape/drive.rs
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@ -1014,16 +1014,18 @@ fn barcode_label_media_worker(
}, },
)] )]
/// Read Cartridge Memory (Medium auxiliary memory attributes) /// Read Cartridge Memory (Medium auxiliary memory attributes)
pub fn cartridge_memory(drive: String) -> Result<Vec<MamAttribute>, Error> { pub async fn cartridge_memory(drive: String) -> Result<Vec<MamAttribute>, Error> {
run_drive_blocking_task(
drive.clone(),
"reading cartridge memory".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let mut handle = drive_config.open()?;
let (config, _digest) = config::drive::config()?; handle.cartridge_memory()
}
let _lock_guard = lock_tape_device(&config, &drive)?; )
.await
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let mut handle = drive_config.open()?;
handle.cartridge_memory()
} }
#[api( #[api(
@ -1039,16 +1041,18 @@ pub fn cartridge_memory(drive: String) -> Result<Vec<MamAttribute>, Error> {
}, },
)] )]
/// Read Volume Statistics (SCSI log page 17h) /// Read Volume Statistics (SCSI log page 17h)
pub fn volume_statistics(drive: String) -> Result<Lp17VolumeStatistics, Error> { pub async fn volume_statistics(drive: String) -> Result<Lp17VolumeStatistics, Error> {
run_drive_blocking_task(
drive.clone(),
"reading volume statistics".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let mut handle = drive_config.open()?;
let (config, _digest) = config::drive::config()?; handle.volume_statistics()
}
let _lock_guard = lock_tape_device(&config, &drive)?; )
.await
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let mut handle = drive_config.open()?;
handle.volume_statistics()
} }
#[api( #[api(
@ -1064,20 +1068,22 @@ pub fn volume_statistics(drive: String) -> Result<Lp17VolumeStatistics, Error> {
}, },
)] )]
/// Get drive/media status /// Get drive/media status
pub fn status(drive: String) -> Result<LinuxDriveAndMediaStatus, Error> { pub async fn status(drive: String) -> Result<LinuxDriveAndMediaStatus, Error> {
run_drive_blocking_task(
drive.clone(),
"reading drive status".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let (config, _digest) = config::drive::config()?; // Note: use open_linux_tape_device, because this also works if no medium loaded
let file = open_linux_tape_device(&drive_config.path)?;
let _lock_guard = lock_tape_device(&config, &drive)?; let mut handle = LinuxTapeHandle::new(file);
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?; handle.get_drive_and_media_status()
}
// Note: use open_linux_tape_device, because this also works if no medium loaded )
let file = open_linux_tape_device(&drive_config.path)?; .await
let mut handle = LinuxTapeHandle::new(file);
handle.get_drive_and_media_status()
} }
#[api( #[api(