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use anyhow::{anyhow, Context, Result};
use zone_core::{Container, ContainerStatus};
use std::{
ffi::{OsStr, OsString},
fmt::Display,
path::PathBuf,
process::{Command, Output},
};
use super::snapshot::Snapshot;
#[derive(Debug)]
pub struct FileSystem {
pub(crate) value: OsString,
pub(crate) mountpoint: Option<PathBuf>,
}
impl Display for FileSystem {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.value.to_string_lossy())
}
}
// pool/000.0/nkollack-1
impl TryFrom<OsString> for FileSystem {
type Error = anyhow::Error;
fn try_from(value: OsString) -> Result<Self, Self::Error> {
Ok(FileSystem {
value,
mountpoint: None,
})
}
}
impl TryFrom<&str> for FileSystem {
type Error = anyhow::Error;
fn try_from(value: &str) -> Result<Self, Self::Error> {
value.try_into()
}
}
impl AsRef<OsStr> for FileSystem {
fn as_ref(&self) -> &OsStr {
self.value.as_ref()
}
}
impl From<FileSystem> for PathBuf {
fn from(val: FileSystem) -> Self {
PathBuf::from(val.value)
}
}
impl From<FileSystem> for String {
fn from(val: FileSystem) -> Self {
val.value.to_string_lossy().to_string()
}
}
impl From<FileSystem> for Container {
fn from(file_system: FileSystem) -> Self {
let path_buf = PathBuf::from(&file_system)
.file_name()
.expect("Invalid FileSystem path")
.to_string_lossy()
.into_owned();
let (user, id) = path_buf.rsplit_once("-").expect("Invalid FileSystem name!");
Container {
id: id
.parse()
.expect("Failed to parse ID from FileSystem name!"),
template: PathBuf::from(file_system)
.parent()
.expect("Base path has no parent!")
.to_string_lossy()
.into_owned(),
user: user.to_string(),
status: ContainerStatus::default(),
}
}
}
impl TryFrom<Output> for FileSystem {
type Error = anyhow::Error;
fn try_from(value: Output) -> Result<Self, Self::Error> {
std::str::from_utf8(&value.stdout)?.try_into()
}
}
impl FileSystem {
pub(super) fn get_name(&self) -> Result<String> {
Ok(PathBuf::from(self.value.clone())
.file_name()
.context("Invalid path for filesystem")?
.to_string_lossy()
.into_owned())
}
pub fn set_quota(&self, quota: &str) -> Result<()> {
match Command::new("zfs")
.arg("set")
.arg(format!("quota={}", quota))
.arg(&self.value)
.status()?
.success()
{
true => Ok(()),
false => Err(anyhow!("Failed to set a quota: {:?}", self)),
}
}
pub(super) fn get_snapshots(&self) -> Result<Vec<Snapshot>> {
let stdout = Command::new("zfs")
.arg("list")
.arg("-H")
.arg("-o")
.arg("name")
.arg("-t")
.arg("snapshot")
.arg(self)
.output()?
.stdout;
String::from_utf8(stdout)?
.split_whitespace()
.map(|s| s.try_into())
.collect()
}
pub(super) fn get_latest_snapshot(&self) -> Result<Option<Snapshot>> {
// pool/447.0@210119221709
Ok(self
.get_snapshots()?
.into_iter()
.max_by_key(|s| s.timestamp))
}
pub(super) fn get_file_systems() -> Result<Vec<FileSystem>> {
let output = Command::new("zfs")
.arg("list")
.arg("-H")
.arg("-o")
.arg("name")
.output()?
.stdout;
std::str::from_utf8(&output)?
.split_whitespace()
.map(|fs| fs.try_into())
.collect()
}
}
|
