openethereum/sync/src/tests/snapshot.rs

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// Copyright 2015, 2016 Ethcore (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/>.
use util::*;
use ethcore::snapshot::{SnapshotService, ManifestData, RestorationStatus};
use ethcore::header::BlockNumber;
use ethcore::client::{EachBlockWith};
use super::helpers::*;
use SyncConfig;
pub struct TestSnapshotService {
manifest: Option<ManifestData>,
chunks: HashMap<H256, Bytes>,
canon_hashes: Mutex<HashMap<u64, H256>>,
restoration_manifest: Mutex<Option<ManifestData>>,
state_restoration_chunks: Mutex<HashMap<H256, Bytes>>,
block_restoration_chunks: Mutex<HashMap<H256, Bytes>>,
}
impl TestSnapshotService {
pub fn new() -> TestSnapshotService {
TestSnapshotService {
manifest: None,
chunks: HashMap::new(),
canon_hashes: Mutex::new(HashMap::new()),
restoration_manifest: Mutex::new(None),
state_restoration_chunks: Mutex::new(HashMap::new()),
block_restoration_chunks: Mutex::new(HashMap::new()),
}
}
pub fn new_with_snapshot(num_chunks: usize, block_hash: H256, block_number: BlockNumber) -> TestSnapshotService {
let num_state_chunks = num_chunks / 2;
let num_block_chunks = num_chunks - num_state_chunks;
let state_chunks: Vec<Bytes> = (0..num_state_chunks).map(|_| H256::random().to_vec()).collect();
let block_chunks: Vec<Bytes> = (0..num_block_chunks).map(|_| H256::random().to_vec()).collect();
let manifest = ManifestData {
state_hashes: state_chunks.iter().map(|data| data.sha3()).collect(),
block_hashes: block_chunks.iter().map(|data| data.sha3()).collect(),
state_root: H256::new(),
block_number: block_number,
block_hash: block_hash,
};
let mut chunks: HashMap<H256, Bytes> = state_chunks.into_iter().map(|data| (data.sha3(), data)).collect();
chunks.extend(block_chunks.into_iter().map(|data| (data.sha3(), data)));
TestSnapshotService {
manifest: Some(manifest),
chunks: chunks,
canon_hashes: Mutex::new(HashMap::new()),
restoration_manifest: Mutex::new(None),
state_restoration_chunks: Mutex::new(HashMap::new()),
block_restoration_chunks: Mutex::new(HashMap::new()),
}
}
}
impl SnapshotService for TestSnapshotService {
fn manifest(&self) -> Option<ManifestData> {
self.manifest.as_ref().cloned()
}
fn chunk(&self, hash: H256) -> Option<Bytes> {
self.chunks.get(&hash).cloned()
}
fn status(&self) -> RestorationStatus {
match *self.restoration_manifest.lock() {
Some(ref manifest) if self.state_restoration_chunks.lock().len() == manifest.state_hashes.len() &&
self.block_restoration_chunks.lock().len() == manifest.block_hashes.len() => RestorationStatus::Inactive,
Some(ref manifest) => RestorationStatus::Ongoing {
state_chunks: manifest.state_hashes.len() as u32,
block_chunks: manifest.block_hashes.len() as u32,
state_chunks_done: self.state_restoration_chunks.lock().len() as u32,
block_chunks_done: self.block_restoration_chunks.lock().len() as u32,
},
None => RestorationStatus::Inactive,
}
}
fn begin_restore(&self, manifest: ManifestData) {
*self.restoration_manifest.lock() = Some(manifest);
self.state_restoration_chunks.lock().clear();
self.block_restoration_chunks.lock().clear();
}
fn abort_restore(&self) {
*self.restoration_manifest.lock() = None;
self.state_restoration_chunks.lock().clear();
self.block_restoration_chunks.lock().clear();
}
fn restore_state_chunk(&self, hash: H256, chunk: Bytes) {
if self.restoration_manifest.lock().as_ref().map_or(false, |m| m.state_hashes.iter().any(|h| h == &hash)) {
self.state_restoration_chunks.lock().insert(hash, chunk);
}
}
fn restore_block_chunk(&self, hash: H256, chunk: Bytes) {
if self.restoration_manifest.lock().as_ref().map_or(false, |m| m.block_hashes.iter().any(|h| h == &hash)) {
self.block_restoration_chunks.lock().insert(hash, chunk);
}
}
fn provide_canon_hashes(&self, hashes: &[(u64, H256)]) {
self.canon_hashes.lock().extend(hashes.iter().cloned());
}
}
#[test]
fn snapshot_sync() {
::env_logger::init().ok();
let mut config = SyncConfig::default();
config.warp_sync = true;
let mut net = TestNet::new_with_config(5, config);
let snapshot_service = Arc::new(TestSnapshotService::new_with_snapshot(16, H256::new(), 500000));
for i in 0..4 {
net.peer_mut(i).snapshot_service = snapshot_service.clone();
net.peer_mut(i).chain.add_blocks(1, EachBlockWith::Nothing);
}
net.sync_steps(50);
assert_eq!(net.peer(4).snapshot_service.state_restoration_chunks.lock().len(), net.peer(0).snapshot_service.manifest.as_ref().unwrap().state_hashes.len());
assert_eq!(net.peer(4).snapshot_service.block_restoration_chunks.lock().len(), net.peer(0).snapshot_service.manifest.as_ref().unwrap().block_hashes.len());
}