109 lines
3.2 KiB
Rust
109 lines
3.2 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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use std::collections::BTreeMap;
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use util::Address;
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use builtin::Builtin;
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use engines::Engine;
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use spec::CommonParams;
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use evm::Schedule;
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use env_info::EnvInfo;
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use block::ExecutedBlock;
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use common::Bytes;
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use account_provider::AccountProvider;
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/// An engine which does not provide any consensus mechanism, just seals blocks internally.
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pub struct InstantSeal {
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params: CommonParams,
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builtins: BTreeMap<Address, Builtin>,
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}
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impl InstantSeal {
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/// Returns new instance of InstantSeal with default VM Factory
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pub fn new(params: CommonParams, builtins: BTreeMap<Address, Builtin>) -> Self {
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InstantSeal {
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params: params,
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builtins: builtins,
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}
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}
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}
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impl Engine for InstantSeal {
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fn name(&self) -> &str {
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"InstantSeal"
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}
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fn params(&self) -> &CommonParams {
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&self.params
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}
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fn builtins(&self) -> &BTreeMap<Address, Builtin> {
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&self.builtins
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}
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fn schedule(&self, _env_info: &EnvInfo) -> Schedule {
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Schedule::new_homestead()
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}
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fn generate_seal(&self, _block: &ExecutedBlock, _accounts: Option<&AccountProvider>) -> Option<Vec<Bytes>> {
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Some(Vec::new())
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}
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}
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#[cfg(test)]
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mod tests {
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use common::*;
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use tests::helpers::*;
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use account_provider::AccountProvider;
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use spec::Spec;
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use block::*;
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/// Create a new test chain spec with `BasicAuthority` consensus engine.
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fn new_test_instant() -> Spec { Spec::load(include_bytes!("../../res/instant_seal.json")) }
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#[test]
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fn instant_can_seal() {
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let tap = AccountProvider::transient_provider();
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let addr = tap.insert_account("".sha3(), "").unwrap();
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let spec = new_test_instant();
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let engine = &*spec.engine;
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let genesis_header = spec.genesis_header();
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let mut db_result = get_temp_journal_db();
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let mut db = db_result.take();
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spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
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let last_hashes = Arc::new(vec![genesis_header.hash()]);
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let vm_factory = Default::default();
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let b = OpenBlock::new(engine, &vm_factory, Default::default(), false, db, &genesis_header, last_hashes, addr, (3141562.into(), 31415620.into()), vec![]).unwrap();
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let b = b.close_and_lock();
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// Seal with empty AccountProvider.
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let seal = engine.generate_seal(b.block(), Some(&tap)).unwrap();
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assert!(b.try_seal(engine, seal).is_ok());
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}
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#[test]
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fn instant_cant_verify() {
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let engine = new_test_instant().engine;
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let mut header: Header = Header::default();
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assert!(engine.verify_block_basic(&header, None).is_ok());
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header.set_seal(vec![rlp::encode(&Signature::zero()).to_vec()]);
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assert!(engine.verify_block_unordered(&header, None).is_ok());
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}
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}
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