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use self::file_system::FileSystem;
use figment::{
providers::{Env, Format, Serialized, Toml},
Figment, Metadata, Profile, Provider,
};
use serde::{Deserialize, Serialize};
use std::{io, path::PathBuf, result};
pub mod file_system;
pub mod snapshot;
type Result<T> = result::Result<T, Error>;
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("ZFS error")]
ZFS(String),
#[error("Snapshot Error: {0:?}")]
Snapshot(String),
#[error("File System Error: {0:?}")]
FileSystem(String),
#[error("IO Error: Failed to run command")]
IO(#[from] io::Error),
}
#[derive(Debug, Deserialize, Serialize)]
pub struct Config {
pub quota: String,
}
impl Default for Config {
fn default() -> Self {
Config {
quota: "16G".to_string(),
}
}
}
impl Config {
pub fn from<T: Provider>(provider: T) -> result::Result<Config, figment::Error> {
Figment::from(provider).extract()
}
pub fn figment() -> Figment {
Figment::from(Config::default())
.merge(Toml::file(Env::var_or("ZFS_CONFIG", "ZFS.toml")).nested())
.merge(Env::prefixed("ZFS_").global())
}
}
impl Provider for Config {
fn metadata(&self) -> Metadata {
Metadata::named("ZFS Config")
}
fn data(
&self,
) -> result::Result<figment::value::Map<Profile, figment::value::Dict>, figment::Error> {
Serialized::defaults(Config::default()).data()
}
}
pub fn create_file_system(
base_fs_name: String,
name: String,
config: &Config,
) -> Result<FileSystem> {
let fs = FileSystem::get_file_systems()?
.into_iter()
.find_map(|fs| match fs.get_name() {
Ok(n) if n == base_fs_name => Some(fs),
_ => None,
})
.ok_or_else(|| Error::FileSystem("No ".to_string()))?;
let snapshot = fs
.get_latest_snapshot()?
.ok_or_else(|| Error::Snapshot("No snapshot found".to_string()))?;
let mut mountpoint = fs.value;
mountpoint.push(name);
let cloned_fs = snapshot.clone_into_file_system(
snapshot.file_system.get_name()?,
Some(PathBuf::from(mountpoint)),
)?;
cloned_fs.set_quota(&config.quota)?;
Ok(cloned_fs)
}
#[cfg(test)]
mod tests {
#[test]
fn zfs_list() {
use super::*;
assert!(FileSystem::get_file_systems().is_ok());
}
}
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