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use derive_more::From;
use either::Either;
use std::io;
use super::framed::DispatcherError;
#[derive(Debug)]
pub enum MqttError<E> {
Service(E),
Protocol(ProtocolError),
HandshakeTimeout,
Disconnected,
V3ProtocolError,
}
#[derive(Debug)]
pub enum ProtocolError {
Decode(DecodeError),
Encode(EncodeError),
Unexpected(u8, &'static str),
PacketIdMismatch,
MaxTopicAlias,
ReceiveMaximumExceeded,
UnknownTopicAlias,
KeepAliveTimeout,
Io(io::Error),
}
impl<E> From<Either<E, ProtocolError>> for MqttError<E> {
fn from(err: Either<E, ProtocolError>) -> Self {
match err {
Either::Left(e) => MqttError::Service(e),
Either::Right(e) => MqttError::Protocol(e),
}
}
}
impl<E> From<Either<DecodeError, io::Error>> for MqttError<E> {
fn from(err: Either<DecodeError, io::Error>) -> Self {
match err {
Either::Left(err) => MqttError::Protocol(ProtocolError::Decode(err)),
Either::Right(err) => MqttError::Protocol(ProtocolError::Io(err)),
}
}
}
impl<E> From<Either<EncodeError, io::Error>> for MqttError<E> {
fn from(err: Either<EncodeError, io::Error>) -> Self {
match err {
Either::Left(err) => MqttError::Protocol(ProtocolError::Encode(err)),
Either::Right(err) => MqttError::Protocol(ProtocolError::Io(err)),
}
}
}
impl From<DispatcherError<crate::v3::codec::Codec>> for ProtocolError {
fn from(err: DispatcherError<crate::v3::codec::Codec>) -> Self {
match err {
DispatcherError::KeepAlive => ProtocolError::KeepAliveTimeout,
DispatcherError::Encoder(err) => ProtocolError::Encode(err),
DispatcherError::Decoder(err) => ProtocolError::Decode(err),
DispatcherError::Io(err) => ProtocolError::Io(err),
}
}
}
impl From<DispatcherError<crate::v5::codec::Codec>> for ProtocolError {
fn from(err: DispatcherError<crate::v5::codec::Codec>) -> Self {
match err {
DispatcherError::KeepAlive => ProtocolError::KeepAliveTimeout,
DispatcherError::Encoder(err) => ProtocolError::Encode(err),
DispatcherError::Decoder(err) => ProtocolError::Decode(err),
DispatcherError::Io(err) => ProtocolError::Io(err),
}
}
}
#[derive(Debug, From)]
pub enum DecodeError {
InvalidProtocol,
InvalidLength,
MalformedPacket,
UnsupportedProtocolLevel,
ConnectReservedFlagSet,
ConnAckReservedFlagSet,
InvalidClientId,
UnsupportedPacketType,
PacketIdRequired,
MaxSizeExceeded,
Utf8Error(std::str::Utf8Error),
}
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
pub enum EncodeError {
InvalidLength,
MalformedPacket,
PacketIdRequired,
UnsupportedVersion,
}
impl PartialEq for DecodeError {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(DecodeError::InvalidProtocol, DecodeError::InvalidProtocol) => true,
(DecodeError::InvalidLength, DecodeError::InvalidLength) => true,
(DecodeError::UnsupportedProtocolLevel, DecodeError::UnsupportedProtocolLevel) => {
true
}
(DecodeError::ConnectReservedFlagSet, DecodeError::ConnectReservedFlagSet) => true,
(DecodeError::ConnAckReservedFlagSet, DecodeError::ConnAckReservedFlagSet) => true,
(DecodeError::InvalidClientId, DecodeError::InvalidClientId) => true,
(DecodeError::UnsupportedPacketType, DecodeError::UnsupportedPacketType) => true,
(DecodeError::PacketIdRequired, DecodeError::PacketIdRequired) => true,
(DecodeError::MaxSizeExceeded, DecodeError::MaxSizeExceeded) => true,
(DecodeError::MalformedPacket, DecodeError::MalformedPacket) => true,
(DecodeError::Utf8Error(_), _) => false,
_ => false,
}
}
}