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use crate::parsers::zfs::{Rule, ZfsParser};
use libnv::nvpair::NvList;
use pest::Parser;
use std::{borrow::Cow, io, path::PathBuf};
pub type Result<T, E = Error> = std::result::Result<T, E>;
pub type ValidationResult<T = (), E = ValidationError> = std::result::Result<T, E>;
quick_error! {
#[derive(Debug)]
pub enum Error {
CmdNotFound {}
LZCInitializationFailed(err: std::io::Error) {
cause(err)
}
NvOpError(err: libnv::NvError) {
cause(err)
from()
}
Io(err: std::io::Error) {
cause(err)
from()
}
Unknown {}
UnknownSoFar(err: String) {}
DatasetNotFound(dataset: PathBuf) {}
ValidationErrors(errors: Vec<ValidationError>) {
from()
}
MultiOpError(err: NvList) {
from()
}
Unimplemented {}
}
}
impl From<ValidationError> for Error {
fn from(err: ValidationError) -> Error { Error::ValidationErrors(vec![err]) }
}
impl Error {
pub fn kind(&self) -> ErrorKind {
match self {
Error::CmdNotFound => ErrorKind::CmdNotFound,
Error::LZCInitializationFailed(_) => ErrorKind::LZCInitializationFailed,
Error::NvOpError(_) => ErrorKind::NvOpError,
Error::Io(_) => ErrorKind::Io,
Error::DatasetNotFound(_) => ErrorKind::DatasetNotFound,
Error::Unknown | Error::UnknownSoFar(_) => ErrorKind::Unknown,
Error::ValidationErrors(_) => ErrorKind::ValidationErrors,
Error::MultiOpError(_) => ErrorKind::MultiOpError,
Error::Unimplemented => ErrorKind::Unimplemented,
}
}
fn unknown_so_far(stderr: Cow<'_, str>) -> Self { Error::UnknownSoFar(stderr.into()) }
#[allow(clippy::option_unwrap_used)]
#[allow(clippy::wildcard_enum_match_arm)]
pub(crate) fn from_stderr(stderr_raw: &[u8]) -> Self {
let stderr = String::from_utf8_lossy(stderr_raw);
if let Ok(mut pairs) = ZfsParser::parse(Rule::error, &stderr) {
let error_pair = pairs.next().unwrap().into_inner().next().unwrap();
match error_pair.as_rule() {
Rule::dataset_not_found => {
let dataset_name_pair = error_pair.into_inner().next().unwrap();
Error::DatasetNotFound(PathBuf::from(dataset_name_pair.as_str()))
},
_ => Self::unknown_so_far(stderr),
}
} else {
Self::unknown_so_far(stderr)
}
}
pub fn invalid_input() -> Self { Error::Io(io::Error::from(io::ErrorKind::InvalidInput)) }
}
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub enum ErrorKind {
CmdNotFound,
LZCInitializationFailed,
NvOpError,
InvalidInput,
Io,
Unknown,
DatasetNotFound,
ValidationErrors,
Unimplemented,
MultiOpError,
}
impl PartialEq for Error {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Error::ValidationErrors(l), Error::ValidationErrors(r)) => l == r,
_ => self.kind() == other.kind(),
}
}
}
quick_error! {
#[derive(Debug, Eq, PartialEq)]
pub enum ValidationError {
MultipleZpools(zpools: Vec<PathBuf>) {}
NameTooLong(dataset: PathBuf) {}
MissingName(dataset: PathBuf) {}
MissingSnapshotName(dataset: PathBuf) {}
MissingPool(dataset: PathBuf) {}
Unknown(dataset: PathBuf) {}
}
}