mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-06-26 08:11:39 +00:00
81 lines
2.6 KiB
Rust
81 lines
2.6 KiB
Rust
// Copyright 2018 Parity Technologies (UK) Ltd.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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use multistream_select::NegotiationError;
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use std::fmt;
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/// Error that can happen when upgrading a connection or substream to use a protocol.
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#[derive(Debug)]
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pub enum UpgradeError<E> {
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/// Error during the negotiation process.
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Select(NegotiationError),
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/// Error during the post-negotiation handshake.
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Apply(E),
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}
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impl<E> UpgradeError<E> {
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pub fn map_err<F, T>(self, f: F) -> UpgradeError<T>
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where
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F: FnOnce(E) -> T,
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{
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match self {
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UpgradeError::Select(e) => UpgradeError::Select(e),
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UpgradeError::Apply(e) => UpgradeError::Apply(f(e)),
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}
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}
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pub fn into_err<T>(self) -> UpgradeError<T>
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where
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T: From<E>,
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{
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self.map_err(Into::into)
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}
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}
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impl<E> fmt::Display for UpgradeError<E>
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where
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E: fmt::Display,
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{
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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UpgradeError::Select(e) => write!(f, "select error: {}", e),
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UpgradeError::Apply(e) => write!(f, "upgrade apply error: {}", e),
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}
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}
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}
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impl<E> std::error::Error for UpgradeError<E>
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where
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E: std::error::Error + 'static,
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{
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fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
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match self {
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UpgradeError::Select(e) => Some(e),
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UpgradeError::Apply(e) => Some(e),
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}
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}
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}
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impl<E> From<NegotiationError> for UpgradeError<E> {
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fn from(e: NegotiationError) -> Self {
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UpgradeError::Select(e)
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}
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}
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