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use brotli2::raw::Error as CompressionError;
use encryption::DecryptionError;
use std::error::Error as StdError;
use std::fmt::{self, Display, Formatter};
use std::io::Error as IoError;
use storage::StorageError;
#[derive(Debug)]
pub enum SelfEncryptionError<E: StorageError> {
Compression,
Decryption,
Io(IoError),
Storage(E),
}
impl<E: StorageError> Display for SelfEncryptionError<E> {
fn fmt(&self, formatter: &mut Formatter) -> fmt::Result {
match *self {
SelfEncryptionError::Compression => {
write!(formatter, "Error while compressing or decompressing")
}
SelfEncryptionError::Decryption => write!(formatter, "Symmetric decryption error"),
SelfEncryptionError::Io(ref error) => {
write!(formatter, "Internal I/O error: {}", error)
}
SelfEncryptionError::Storage(ref error) => {
write!(formatter, "Storage error: {}", error)
}
}
}
}
impl<E: StorageError> StdError for SelfEncryptionError<E> {
fn description(&self) -> &str {
match *self {
SelfEncryptionError::Compression => "Compression error",
SelfEncryptionError::Decryption => "Symmetric decryption error",
SelfEncryptionError::Io(_) => "I/O error",
SelfEncryptionError::Storage(ref error) => error.description(),
}
}
}
impl<E: StorageError> From<CompressionError> for SelfEncryptionError<E> {
fn from(_error: CompressionError) -> SelfEncryptionError<E> {
SelfEncryptionError::Compression
}
}
impl<E: StorageError> From<DecryptionError> for SelfEncryptionError<E> {
fn from(_error: DecryptionError) -> SelfEncryptionError<E> {
SelfEncryptionError::Decryption
}
}
impl<E: StorageError> From<IoError> for SelfEncryptionError<E> {
fn from(error: IoError) -> SelfEncryptionError<E> {
SelfEncryptionError::Io(error)
}
}
impl<E: StorageError> From<E> for SelfEncryptionError<E> {
fn from(error: E) -> SelfEncryptionError<E> {
SelfEncryptionError::Storage(error)
}
}