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chanmgr: implement HasRetryTime.

This commit is contained in:
Nick Mathewson 2022-03-31 15:38:48 -04:00
parent f7810d42eb
commit 936439858b
1 changed files with 31 additions and 0 deletions
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31
crates/tor-chanmgr/src/err.rs
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@ -92,6 +92,37 @@ impl tor_error::HasKind for Error {
}
}
impl tor_error::HasRetryTime for Error {
fn retry_time(&self) -> tor_error::RetryTime {
use tor_error::RetryTime as RT;
use Error as E;
match self {
// We can retry this action immediately; there was already a time delay.
E::ChanTimeout => RT::Immediate,
// These are worth retrying in a little while.
//
// TODO: Someday we might want to distinguish among different kinds of IO
// errors.
E::PendingFailed | E::Proto(_) | E::Io { .. } => RT::AfterWaiting,
// This error reflects multiple attempts, but every failure is an IO
// error, so we can also retry this after a delay.
//
// TODO: Someday we might want to distinguish among different kinds
// of IO errors.
E::ChannelBuild { .. } => RT::AfterWaiting,
// This one can't succeed: if the ChanTarget have addresses to begin with,
// it won't have addresses in the future.
E::UnusableTarget(_) => RT::Never,
// These aren't recoverable at all.
E::Spawn { .. } | E::Internal(_) => RT::Never,
}
}
}
impl Error {
/// Construct a new `Error` from a `SpawnError`.
pub(crate) fn from_spawn(spawning: &'static str, err: SpawnError) -> Error {