67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
// Copyright 2015-2018 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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//! Blockhain info type definition
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use std::fmt;
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use ethereum_types::{U256, H256};
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use security_level::SecurityLevel;
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use {BlockNumber};
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/// Information about the blockchain gathered together.
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#[derive(Clone, Debug)]
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pub struct BlockChainInfo {
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/// Blockchain difficulty.
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pub total_difficulty: U256,
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/// Block queue difficulty.
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pub pending_total_difficulty: U256,
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/// Genesis block hash.
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pub genesis_hash: H256,
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/// Best blockchain block hash.
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pub best_block_hash: H256,
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/// Best blockchain block number.
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pub best_block_number: BlockNumber,
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/// Best blockchain block timestamp.
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pub best_block_timestamp: u64,
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/// Best ancient block hash.
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pub ancient_block_hash: Option<H256>,
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/// Best ancient block number.
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pub ancient_block_number: Option<BlockNumber>,
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/// First block on the best sequence.
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pub first_block_hash: Option<H256>,
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/// Number of the first block on the best sequence.
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pub first_block_number: Option<BlockNumber>,
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}
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impl BlockChainInfo {
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/// Determine the security model for the current state.
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pub fn security_level(&self) -> SecurityLevel {
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// TODO: Detect SecurityLevel::FullState : https://github.com/paritytech/parity-ethereum/issues/3834
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if self.ancient_block_number.is_none() || self.first_block_number.is_none() {
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SecurityLevel::FullProofOfWork
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} else {
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SecurityLevel::PartialProofOfWork(self.best_block_number - self.first_block_number.expect("Guard condition means this is not none"))
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}
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}
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}
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impl fmt::Display for BlockChainInfo {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "#{}.{}", self.best_block_number, self.best_block_hash)
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}
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}
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