1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
// Copyright 2015-2018 Parity Technologies (UK) Ltd. // This file is part of Parity. // Parity is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // Parity is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with Parity. If not, see <http://www.gnu.org/licenses/>. //! Blockhain info type definition use std::fmt; use ethereum_types::{U256, H256}; use security_level::SecurityLevel; use {BlockNumber}; /// Information about the blockchain gathered together. #[derive(Clone, Debug)] pub struct BlockChainInfo { /// Blockchain difficulty. pub total_difficulty: U256, /// Block queue difficulty. pub pending_total_difficulty: U256, /// Genesis block hash. pub genesis_hash: H256, /// Best blockchain block hash. pub best_block_hash: H256, /// Best blockchain block number. pub best_block_number: BlockNumber, /// Best blockchain block timestamp. pub best_block_timestamp: u64, /// Best ancient block hash. pub ancient_block_hash: Option<H256>, /// Best ancient block number. pub ancient_block_number: Option<BlockNumber>, /// First block on the best sequence. pub first_block_hash: Option<H256>, /// Number of the first block on the best sequence. pub first_block_number: Option<BlockNumber>, } impl BlockChainInfo { /// Determine the security model for the current state. pub fn security_level(&self) -> SecurityLevel { // TODO: Detect SecurityLevel::FullState : https://github.com/paritytech/parity-ethereum/issues/3834 if self.ancient_block_number.is_none() || self.first_block_number.is_none() { SecurityLevel::FullProofOfWork } else { SecurityLevel::PartialProofOfWork(self.best_block_number - self.first_block_number.expect("Guard condition means this is not none")) } } } impl fmt::Display for BlockChainInfo { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "#{}.{}", self.best_block_number, self.best_block_hash) } }