/
error.rs
205 lines (189 loc) · 5.8 KB
/
error.rs
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//
// Copyright (c) The Holo Core Contributors
//
// See LICENSE for license details.
//
use std::net::IpAddr;
use tracing::warn;
use crate::network::PacketInfo;
use crate::packet::{DecodeError, PacketFlags};
use crate::session::SessionId;
// BFD errors.
#[derive(Debug)]
pub enum Error {
// I/O errors
IoError(IoError),
// Inter-task communication
SessionIdNotFound(SessionId),
// Packet input
UdpInvalidSourceAddr(IpAddr),
UdpPacketDecodeError(DecodeError),
SessionNoMatch(PacketInfo, u32),
VersionMismatch(u8),
InvalidDetectMult(u8),
InvalidFlags(PacketFlags),
InvalidMyDiscriminator(u32),
InvalidYourDiscriminator(u32),
AuthError,
}
// BFD I/O errors.
#[derive(Debug)]
pub enum IoError {
UdpSocketError(std::io::Error),
UdpRecvError(std::io::Error),
UdpSendError(std::io::Error),
UdpRecvMissingSourceAddr,
UdpRecvMissingAncillaryData,
}
// ===== impl Error =====
impl Error {
pub(crate) fn log(&self) {
match self {
Error::IoError(error) => {
error.log();
}
Error::SessionIdNotFound(sess_id) => {
warn!(?sess_id, "{}", self);
}
Error::UdpInvalidSourceAddr(addr) => {
warn!(address = %addr, "{}", self);
}
Error::UdpPacketDecodeError(error) => {
warn!(error = %with_source(error), "{}", self);
}
Error::VersionMismatch(version) => {
warn!(%version, "{}", self);
}
Error::SessionNoMatch(packet_info, your_discr) => {
warn!(?packet_info, %your_discr, "{}", self);
}
Error::InvalidDetectMult(detect_mult) => {
warn!(%detect_mult, "{}", self);
}
Error::InvalidFlags(flags) => {
warn!(?flags, "{}", self);
}
Error::InvalidMyDiscriminator(discr) => {
warn!(%discr, "{}", self);
}
Error::InvalidYourDiscriminator(discr) => {
warn!(%discr, "{}", self);
}
Error::AuthError => {
warn!("{}", self);
}
}
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Error::IoError(error) => error.fmt(f),
Error::SessionIdNotFound(..) => {
write!(f, "session ID not found")
}
Error::UdpInvalidSourceAddr(..) => {
write!(f, "invalid source address")
}
Error::UdpPacketDecodeError(..) => {
write!(f, "failed to decode packet")
}
Error::SessionNoMatch(..) => {
write!(f, "failed to find session")
}
Error::VersionMismatch(..) => {
write!(f, "packet version mismatch")
}
Error::InvalidDetectMult(..) => {
write!(f, "received invalid detection multiplier")
}
Error::InvalidFlags(..) => {
write!(f, "received invalid flags")
}
Error::InvalidMyDiscriminator(..) => {
write!(f, "received invalid My Discriminator")
}
Error::InvalidYourDiscriminator(..) => {
write!(f, "received invalid Your Discriminator")
}
Error::AuthError => {
write!(f, "failed to authenticate packet")
}
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::IoError(error) => Some(error),
Error::UdpPacketDecodeError(error) => Some(error),
_ => None,
}
}
}
impl From<IoError> for Error {
fn from(error: IoError) -> Error {
Error::IoError(error)
}
}
// ===== impl IoError =====
impl IoError {
pub(crate) fn log(&self) {
match self {
IoError::UdpSocketError(error)
| IoError::UdpRecvError(error)
| IoError::UdpSendError(error) => {
warn!(error = %with_source(error), "{}", self);
}
IoError::UdpRecvMissingSourceAddr
| IoError::UdpRecvMissingAncillaryData => {
warn!("{}", self);
}
}
}
}
impl std::fmt::Display for IoError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
IoError::UdpSocketError(..) => {
write!(f, "failed to create UDP socket")
}
IoError::UdpRecvError(..) => {
write!(f, "failed to receive UDP packet")
}
IoError::UdpSendError(..) => {
write!(f, "failed to send UDP packet")
}
IoError::UdpRecvMissingSourceAddr => {
write!(
f,
"failed to retrieve source address from received packet"
)
}
IoError::UdpRecvMissingAncillaryData => {
write!(
f,
"failed to retrieve ancillary data from received packet"
)
}
}
}
}
impl std::error::Error for IoError {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
IoError::UdpSocketError(error)
| IoError::UdpRecvError(error)
| IoError::UdpSendError(error) => Some(error),
_ => None,
}
}
}
// ===== global functions =====
fn with_source<E: std::error::Error>(error: E) -> String {
if let Some(source) = error.source() {
format!("{} ({})", error, with_source(source))
} else {
error.to_string()
}
}