57 lines
1.9 KiB
Rust
57 lines
1.9 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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use bytes::Bytes;
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use client::Client;
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use ethereum_types::H256;
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use snapshot::ManifestData;
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use std::fmt;
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/// Message type for external and internal events
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#[derive(Debug)]
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pub enum ClientIoMessage {
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/// Best Block Hash in chain has been changed
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NewChainHead,
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/// A block is ready
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BlockVerified,
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/// Begin snapshot restoration
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BeginRestoration(ManifestData),
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/// Feed a state chunk to the snapshot service
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FeedStateChunk(H256, Bytes),
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/// Feed a block chunk to the snapshot service
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FeedBlockChunk(H256, Bytes),
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/// Take a snapshot for the block with given number.
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TakeSnapshot(u64),
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/// Execute wrapped closure
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Execute(Callback),
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}
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impl ClientIoMessage {
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/// Create new `ClientIoMessage` that executes given procedure.
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pub fn execute<F: Fn(&Client) + Send + Sync + 'static>(fun: F) -> Self {
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ClientIoMessage::Execute(Callback(Box::new(fun)))
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}
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}
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/// A function to invoke in the client thread.
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pub struct Callback(pub Box<dyn Fn(&Client) + Send + Sync>);
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impl fmt::Debug for Callback {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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write!(fmt, "<callback>")
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}
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}
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