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// Copyright 2018-2019 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
use std::{fmt, io, path::PathBuf};
use bincode::Error as BincodeError;
use crate::{backend::traits::BackendError, error::StoreError};
#[derive(Debug)]
pub enum ErrorImpl {
KeyValuePairNotFound,
EnvPoisonError,
DbsFull,
DbsIllegalOpen,
DbNotFoundError,
DbIsForeignError,
UnsuitableEnvironmentPath(PathBuf),
IoError(io::Error),
BincodeError(BincodeError),
}
impl BackendError for ErrorImpl {}
impl fmt::Display for ErrorImpl {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match self {
ErrorImpl::KeyValuePairNotFound => write!(fmt, "KeyValuePairNotFound (safe mode)"),
ErrorImpl::EnvPoisonError => write!(fmt, "EnvPoisonError (safe mode)"),
ErrorImpl::DbsFull => write!(fmt, "DbsFull (safe mode)"),
ErrorImpl::DbsIllegalOpen => write!(fmt, "DbIllegalOpen (safe mode)"),
ErrorImpl::DbNotFoundError => write!(fmt, "DbNotFoundError (safe mode)"),
ErrorImpl::DbIsForeignError => write!(fmt, "DbIsForeignError (safe mode)"),
ErrorImpl::UnsuitableEnvironmentPath(_) => {
write!(fmt, "UnsuitableEnvironmentPath (safe mode)")
}
ErrorImpl::IoError(e) => e.fmt(fmt),
ErrorImpl::BincodeError(e) => e.fmt(fmt),
}
}
}
impl Into<StoreError> for ErrorImpl {
fn into(self) -> StoreError {
// The `StoreError::KeyValuePairBadSize` error is unused, because this
// backend supports keys and values of arbitrary sizes.
// The `StoreError::MapFull` and `StoreError::ReadersFull` are
// unimplemented yet, but they should be in the future.
match self {
ErrorImpl::KeyValuePairNotFound => StoreError::KeyValuePairNotFound,
ErrorImpl::BincodeError(_) => StoreError::FileInvalid,
ErrorImpl::DbsFull => StoreError::DbsFull,
ErrorImpl::UnsuitableEnvironmentPath(path) => {
StoreError::UnsuitableEnvironmentPath(path)
}
ErrorImpl::IoError(error) => StoreError::IoError(error),
_ => StoreError::SafeModeError(self),
}
}
}
impl From<io::Error> for ErrorImpl {
fn from(e: io::Error) -> ErrorImpl {
ErrorImpl::IoError(e)
}
}
impl From<BincodeError> for ErrorImpl {
fn from(e: BincodeError) -> ErrorImpl {
ErrorImpl::BincodeError(e)
}
}