4c5e4ac8da
* separate modules for consensus snapshot chunks * bulk of authority warp logic * finish authority warp implementation * squash warnings and enable authority snapshot mode * test harness for PoA * fiddle with harness * epoch generation proof fixes * update constructor code * store epoch transition proof after block commit * basic snap and restore test * use keyvaluedb in state restoration * decompress chunks * fix encoding issues * fixed-to-contract-to-contract test * implement ancient block import * restore genesis transition in PoW snapshot * add format version method to snapshot components * supported version numbers in snapshot_components * allow returning of ancient epoch transitions * genesis hash mismatch check * remove commented code
46 lines
1.5 KiB
Rust
46 lines
1.5 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
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// Epoch verifiers.
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use error::Error;
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use header::Header;
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/// Verifier for all blocks within an epoch with self-contained state.
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///
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/// See docs on `Engine` relating to proving functions for more details.
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pub trait EpochVerifier: Send + Sync {
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/// Get the epoch number.
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fn epoch_number(&self) -> u64;
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/// Lightly verify the next block header.
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/// This may not be a header belonging to a different epoch.
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fn verify_light(&self, header: &Header) -> Result<(), Error>;
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/// Perform potentially heavier checks on the next block header.
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fn verify_heavy(&self, header: &Header) -> Result<(), Error> {
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self.verify_light(header)
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}
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}
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/// Special "no-op" verifier for stateless, epoch-less engines.
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pub struct NoOp;
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impl EpochVerifier for NoOp {
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fn epoch_number(&self) -> u64 { 0 }
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fn verify_light(&self, _header: &Header) -> Result<(), Error> { Ok(()) }
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}
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