125 lines
4.3 KiB
Rust
125 lines
4.3 KiB
Rust
// Copyright 2015, 2016 Ethcore (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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#![warn(missing_docs)]
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#![cfg_attr(all(nightly, feature="dev"), feature(plugin))]
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#![cfg_attr(all(nightly, feature="dev"), plugin(clippy))]
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//! Miner module
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//! Keeps track of transactions and mined block.
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//!
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//! Usage example:
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//!
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//! ```rust
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//! extern crate ethcore_util as util;
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//! extern crate ethcore;
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//! extern crate ethminer;
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//! use std::ops::Deref;
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//! use std::env;
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//! use std::sync::Arc;
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//! use util::network::{NetworkService, NetworkConfiguration};
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//! use ethcore::client::{Client, ClientConfig, BlockChainClient};
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//! use ethcore::ethereum;
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//! use ethminer::{Miner, MinerService};
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//!
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//! fn main() {
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//! let mut service = NetworkService::start(NetworkConfiguration::new()).unwrap();
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//! let dir = env::temp_dir();
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//! let client = Client::new(ClientConfig::default(), ethereum::new_frontier(), &dir, service.io().channel()).unwrap();
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//!
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//! let miner: Miner = Miner::default();
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//! // get status
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//! assert_eq!(miner.status().transactions_in_pending_queue, 0);
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//!
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//! // Check block for sealing
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//! assert!(miner.sealing_block(client.deref()).lock().unwrap().is_some());
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//! }
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//! ```
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#[macro_use]
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extern crate log;
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#[macro_use]
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extern crate ethcore_util as util;
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extern crate ethcore;
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extern crate env_logger;
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extern crate rayon;
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mod miner;
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mod transaction_queue;
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pub use transaction_queue::{TransactionQueue, AccountDetails};
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pub use miner::{Miner};
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use std::sync::Mutex;
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use util::{H256, U256, Address, FixedHash, Bytes};
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use ethcore::client::{BlockChainClient};
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use ethcore::block::{ClosedBlock};
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use ethcore::error::{Error};
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use ethcore::transaction::SignedTransaction;
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/// Miner client API
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pub trait MinerService : Send + Sync {
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/// Returns miner's status.
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fn status(&self) -> MinerStatus;
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/// Get the author that we will seal blocks as.
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fn author(&self) -> Address { Address::zero() }
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/// Get the extra_data that we will seal blocks wuth.
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fn extra_data(&self) -> Bytes { vec![] }
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/// Imports transactions to transaction queue.
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fn import_transactions<T>(&self, transactions: Vec<SignedTransaction>, fetch_account: T) -> Vec<Result<(), Error>>
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where T: Fn(&Address) -> AccountDetails;
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/// Returns hashes of transactions currently in pending
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fn pending_transactions_hashes(&self) -> Vec<H256>;
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/// Removes all transactions from the queue and restart mining operation.
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fn clear_and_reset(&self, chain: &BlockChainClient);
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/// Called when blocks are imported to chain, updates transactions queue.
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fn chain_new_blocks(&self, chain: &BlockChainClient, imported: &[H256], invalid: &[H256], enacted: &[H256], retracted: &[H256]);
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/// New chain head event. Restart mining operation.
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fn update_sealing(&self, chain: &BlockChainClient);
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/// Grab the `ClosedBlock` that we want to be sealed. Comes as a mutex that you have to lock.
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fn sealing_block(&self, chain: &BlockChainClient) -> &Mutex<Option<ClosedBlock>>;
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/// Submit `seal` as a valid solution for the header of `pow_hash`.
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/// Will check the seal, but not actually insert the block into the chain.
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fn submit_seal(&self, chain: &BlockChainClient, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error>;
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/// Query pending transactions for hash
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fn transaction(&self, hash: &H256) -> Option<SignedTransaction>;
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/// Suggested gas price
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fn sensible_gas_price(&self) -> U256 { x!(20000000000u64) }
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}
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/// Mining status
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pub struct MinerStatus {
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/// Number of transactions in queue with state `pending` (ready to be included in block)
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pub transactions_in_pending_queue: usize,
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/// Number of transactions in queue with state `future` (not yet ready to be included in block)
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pub transactions_in_future_queue: usize,
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/// Number of transactions included in currently mined block
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pub transactions_in_pending_block: usize,
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}
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