mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-05-22 23:51:21 +00:00
67 lines
2.2 KiB
Rust
67 lines
2.2 KiB
Rust
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// Copyright 2017 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 futures::{future, prelude::*};
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use multiaddr::Multiaddr;
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use tokio_io::{AsyncRead, AsyncWrite};
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use upgrade::{ConnectionUpgrade, Endpoint};
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/// Applies a closure on the output of a connection upgrade.
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#[inline]
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pub fn map<U, F>(upgrade: U, map: F) -> Map<U, F> {
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Map { upgrade, map }
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}
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/// Application of a closure on the output of a connection upgrade.
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#[derive(Debug, Copy, Clone)]
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pub struct Map<U, F> {
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upgrade: U,
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map: F,
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}
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impl<C, U, F, O> ConnectionUpgrade<C> for Map<U, F>
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where
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U: ConnectionUpgrade<C>,
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C: AsyncRead + AsyncWrite,
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F: FnOnce(U::Output) -> O,
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{
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type NamesIter = U::NamesIter;
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type UpgradeIdentifier = U::UpgradeIdentifier;
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fn protocol_names(&self) -> Self::NamesIter {
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self.upgrade.protocol_names()
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}
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type Output = O;
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type Future = future::Map<U::Future, F>;
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fn upgrade(
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self,
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socket: C,
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id: Self::UpgradeIdentifier,
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ty: Endpoint,
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remote_addr: &Multiaddr,
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) -> Self::Future {
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self.upgrade
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.upgrade(socket, id, ty, remote_addr)
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.map(self.map)
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}
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}
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