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fn block_status(&self, id: BlockId) -> BlockStatus {
let chain = self.chain.read();
match Self::block_hash(&chain, id) {
Some(ref hash) if chain.is_known(hash) => BlockStatus::InChain,
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Some(hash) => self.block_queue.status(&hash).into(),
None => BlockStatus::Unknown
fn block_total_difficulty(&self, id: BlockId) -> Option<U256> {
if let BlockId::Pending = id {
if let Some(block) = self.miner.pending_block() {
return Some(*block.header.difficulty() + self.block_total_difficulty(BlockId::Latest).expect("blocks in chain have details; qed"));
let chain = self.chain.read();
Self::block_hash(&chain, id).and_then(|hash| chain.block_details(&hash)).map(|d| d.total_difficulty)
fn nonce(&self, address: &Address, id: BlockId) -> Option<U256> {
self.state_at(id).map(|s| s.nonce(address))
fn storage_root(&self, address: &Address, id: BlockId) -> Option<H256> {
self.state_at(id).and_then(|s| s.storage_root(address))
}
fn block_hash(&self, id: BlockId) -> Option<H256> {
let chain = self.chain.read();
Self::block_hash(&chain, id)
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}
fn code(&self, address: &Address, id: BlockId) -> Option<Option<Bytes>> {
self.state_at(id).map(|s| s.code(address).map(|c| (*c).clone()))
fn balance(&self, address: &Address, id: BlockId) -> Option<U256> {
self.state_at(id).map(|s| s.balance(address))
fn storage_at(&self, address: &Address, position: &H256, id: BlockId) -> Option<H256> {
self.state_at(id).map(|s| s.storage_at(address, position))
fn list_accounts(&self, id: BlockId, after: Option<&Address>, count: u64) -> Option<Vec<Address>> {
if !self.factories.trie.is_fat() {
trace!(target: "fatdb", "list_accounts: Not a fat DB");
return None;
}
let state = match self.state_at(id) {
Some(state) => state,
_ => return None,
};
let (root, db) = state.drop();
let trie = match self.factories.trie.readonly(db.as_hashdb(), &root) {
Ok(trie) => trie,
_ => {
trace!(target: "fatdb", "list_accounts: Couldn't open the DB");
return None;
}
};
Ok(iter) => iter,
_ => return None,
};
if let Some(after) = after {
if let Err(e) = iter.seek(after) {
trace!(target: "fatdb", "list_accounts: Couldn't seek the DB: {:?}", e);
}
}
let accounts = iter.filter_map(|item| {
item.ok().map(|(addr, _)| Address::from_slice(&addr))
Some(accounts)
}
fn list_storage(&self, id: BlockId, account: &Address, after: Option<&H256>, count: u64) -> Option<Vec<H256>> {
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if !self.factories.trie.is_fat() {
trace!(target: "fatdb", "list_stroage: Not a fat DB");
return None;
}
let state = match self.state_at(id) {
Some(state) => state,
_ => return None,
};
let root = match state.storage_root(account) {
Some(root) => root,
_ => return None,
};
let (_, db) = state.drop();
let account_db = self.factories.accountdb.readonly(db.as_hashdb(), account.sha3());
let trie = match self.factories.trie.readonly(account_db.as_hashdb(), &root) {
Ok(trie) => trie,
_ => {
trace!(target: "fatdb", "list_storage: Couldn't open the DB");
return None;
}
};
let mut iter = match trie.iter() {
Ok(iter) => iter,
_ => return None,
};
if let Some(after) = after {
if let Err(e) = iter.seek(after) {
trace!(target: "fatdb", "list_accounts: Couldn't seek the DB: {:?}", e);
}
}
let keys = iter.filter_map(|item| {
item.ok().map(|(key, _)| H256::from_slice(&key))
}).take(count as usize).collect();
Some(keys)
}
fn transaction(&self, id: TransactionId) -> Option<LocalizedTransaction> {
self.transaction_address(id).and_then(|address| self.chain.read().transaction(&address))
fn uncle(&self, id: UncleId) -> Option<Bytes> {
self.block_body(id.block).and_then(|body| BodyView::new(&body).uncle_rlp_at(index))
fn transaction_receipt(&self, id: TransactionId) -> Option<LocalizedReceipt> {
self.transaction_address(id)
.and_then(|address| chain.block_number(&address.block_hash).and_then(|block_number| {
.and_then(|block| {
BodyView::new(&block).localized_transaction_at(&address.block_hash, block_number, address.index)
});
let tx_and_sender = t.and_then(|tx| tx.sender().ok().map(|sender| (tx, sender)));
match (tx_and_sender, chain.transaction_receipt(&address)) {
(Some((tx, sender)), Some(receipt)) => {
let block_hash = tx.block_hash.clone();
let block_number = tx.block_number.clone();
let transaction_hash = tx.hash();
let transaction_index = tx.transaction_index;
let prior_gas_used = match tx.transaction_index {
0 => U256::zero(),
i => {
let prior_address = TransactionAddress { block_hash: address.block_hash, index: i - 1 };
let prior_receipt = chain.transaction_receipt(&prior_address).expect("Transaction receipt at `address` exists; `prior_address` has lower index in same block; qed");
prior_receipt.gas_used
}
};
Some(LocalizedReceipt {
transaction_hash: tx.hash(),
transaction_index: tx.transaction_index,
block_hash: tx.block_hash,
block_number: tx.block_number,
cumulative_gas_used: receipt.gas_used,
gas_used: receipt.gas_used - prior_gas_used,
contract_address: match tx.action {
Action::Call(_) => None,
Action::Create => Some(contract_address(&sender, &tx.nonce))
logs: receipt.logs.into_iter().enumerate().map(|(i, log)| LocalizedLogEntry {
entry: log,
block_hash: block_hash.clone(),
block_number: block_number,
transaction_hash: transaction_hash.clone(),
transaction_index: transaction_index,
log_index: i
}).collect(),
log_bloom: receipt.log_bloom,
state_root: receipt.state_root,
})
},
_ => None
}
fn tree_route(&self, from: &H256, to: &H256) -> Option<TreeRoute> {
let chain = self.chain.read();
match chain.is_known(from) && chain.is_known(to) {
true => Some(chain.tree_route(from.clone(), to.clone())),
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false => None
}
fn find_uncles(&self, hash: &H256) -> Option<Vec<H256>> {
self.chain.read().find_uncle_hashes(hash, self.engine.maximum_uncle_age())
fn state_data(&self, hash: &H256) -> Option<Bytes> {
self.state_db.lock().journal_db().state(hash)
fn block_receipts(&self, hash: &H256) -> Option<Bytes> {
self.chain.read().block_receipts(hash).map(|receipts| ::rlp::encode(&receipts).to_vec())
fn import_block(&self, bytes: Bytes) -> Result<H256, BlockImportError> {
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use verification::queue::kind::HasHash;
use verification::queue::kind::blocks::Unverified;
// create unverified block here so the `sha3` calculation can be cached.
let unverified = Unverified::new(bytes);
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if self.chain.read().is_known(&unverified.hash()) {
return Err(BlockImportError::Import(ImportError::AlreadyInChain));
if self.block_status(BlockId::Hash(unverified.parent_hash())) == BlockStatus::Unknown {
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return Err(BlockImportError::Block(BlockError::UnknownParent(unverified.parent_hash())));
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Ok(try!(self.block_queue.import(unverified)))
fn import_block_with_receipts(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> Result<H256, BlockImportError> {
{
// check block order
let header = BlockView::new(&block_bytes).header_view();
if self.chain.read().is_known(&header.hash()) {
return Err(BlockImportError::Import(ImportError::AlreadyInChain));
}
if self.block_status(BlockId::Hash(header.parent_hash())) == BlockStatus::Unknown {
return Err(BlockImportError::Block(BlockError::UnknownParent(header.parent_hash())));
}
}
self.import_old_block(block_bytes, receipts_bytes).map_err(Into::into)
}
fn chain_info(&self) -> BlockChainInfo {
fn additional_params(&self) -> BTreeMap<String, String> {
self.engine.additional_params().into_iter().collect()
}
fn blocks_with_bloom(&self, bloom: &H2048, from_block: BlockId, to_block: BlockId) -> Option<Vec<BlockNumber>> {
match (self.block_number(from_block), self.block_number(to_block)) {
(Some(from), Some(to)) => Some(self.chain.read().blocks_with_bloom(bloom, from, to)),
fn logs(&self, filter: Filter) -> Vec<LocalizedLogEntry> {
let blocks = filter.bloom_possibilities().iter()
.filter_map(|bloom| self.blocks_with_bloom(bloom, filter.from_block.clone(), filter.to_block.clone()))
.flat_map(|m| m)
// remove duplicate elements
.collect::<HashSet<u64>>()
.into_iter()
.collect::<Vec<u64>>();
self.chain.read().logs(blocks, |entry| filter.matches(entry), filter.limit)
fn filter_traces(&self, filter: TraceFilter) -> Option<Vec<LocalizedTrace>> {
let start = self.block_number(filter.range.start);
let end = self.block_number(filter.range.end);
match (start, end) {
(Some(s), Some(e)) => {
let filter = trace::Filter {
range: s as usize..e as usize,
from_address: From::from(filter.from_address),
to_address: From::from(filter.to_address),
};
let traces = self.tracedb.read().filter(&filter);
Some(traces)
},
_ => None,
}
}
fn trace(&self, trace: TraceId) -> Option<LocalizedTrace> {
let trace_address = trace.address;
self.transaction_address(trace.transaction)
.and_then(|tx_address| {
self.block_number(BlockId::Hash(tx_address.block_hash))
.and_then(|number| self.tracedb.read().trace(number, tx_address.index, trace_address))
fn transaction_traces(&self, transaction: TransactionId) -> Option<Vec<LocalizedTrace>> {
self.transaction_address(transaction)
.and_then(|tx_address| {
self.block_number(BlockId::Hash(tx_address.block_hash))
.and_then(|number| self.tracedb.read().transaction_traces(number, tx_address.index))
fn block_traces(&self, block: BlockId) -> Option<Vec<LocalizedTrace>> {
.and_then(|number| self.tracedb.read().block_traces(number))
fn last_hashes(&self) -> LastHashes {
(*self.build_last_hashes(self.chain.read().best_block_hash())).clone()
fn queue_transactions(&self, transactions: Vec<Bytes>) {
let queue_size = self.queue_transactions.load(AtomicOrdering::Relaxed);
trace!(target: "external_tx", "Queue size: {}", queue_size);
if queue_size > MAX_TX_QUEUE_SIZE {
debug!("Ignoring {} transactions: queue is full", transactions.len());
} else {
let len = transactions.len();
match self.io_channel.lock().send(ClientIoMessage::NewTransactions(transactions)) {
Ok(_) => {
self.queue_transactions.fetch_add(len, AtomicOrdering::SeqCst);
}
Err(e) => {
debug!("Ignoring {} transactions: error queueing: {}", len, e);
}
}
}
}
fn pending_transactions(&self) -> Vec<SignedTransaction> {
self.miner.pending_transactions(self.chain.read().best_block_number())
self.engine.signing_network_id(&self.latest_env_info())
}
fn block_extra_info(&self, id: BlockId) -> Option<BTreeMap<String, String>> {
self.block_header(id)
.map(|block| decode(&block))
.map(|header| self.engine.extra_info(&header))
}
fn uncle_extra_info(&self, id: UncleId) -> Option<BTreeMap<String, String>> {
.map(|header| self.engine.extra_info(&decode(&header)))
fn pruning_info(&self) -> PruningInfo {
PruningInfo {
earliest_chain: self.chain.read().first_block_number().unwrap_or(1),
earliest_state: self.state_db.lock().journal_db().earliest_era().unwrap_or(0),
}
}
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impl MiningBlockChainClient for Client {
fn latest_schedule(&self) -> Schedule {
fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes) -> OpenBlock {
let engine = &*self.engine;
let chain = self.chain.read();
let h = chain.best_block_hash();
self.factories.clone(),
false, // TODO: this will need to be parameterised once we want to do immediate mining insertion.
self.state_db.lock().boxed_clone_canon(&h),
&chain.block_header(&h).expect("h is best block hash: so its header must exist: qed"),
).expect("OpenBlock::new only fails if parent state root invalid; state root of best block's header is never invalid; qed");
.into_iter()
.take(engine.maximum_uncle_count())
.foreach(|h| {
open_block.push_uncle(h).expect("pushing maximum_uncle_count;
open_block was just created;
push_uncle is not ok only if more than maximum_uncle_count is pushed;
so all push_uncle are Ok;
qed");
&self.factories.vm
fn import_sealed_block(&self, block: SealedBlock) -> ImportResult {
let h = block.header().hash();
let start = precise_time_ns();
let route = {
// scope for self.import_lock
let _import_lock = self.import_lock.lock();
let _timer = PerfTimer::new("import_sealed_block");
let number = block.header().number();
let block_data = block.rlp_bytes();
let route = self.commit_block(block, &h, &block_data);
trace!(target: "client", "Imported sealed block #{} ({})", number, h);
self.state_db.lock().sync_cache(&route.enacted, &route.retracted, false);
route
};
let (enacted, retracted) = self.calculate_enacted_retracted(&[route]);
self.miner.chain_new_blocks(self, &[h.clone()], &[], &enacted, &retracted);
self.notify(|notify| {
notify.new_blocks(
vec![h.clone()],
vec![],
enacted.clone(),
retracted.clone(),
vec![h.clone()],
precise_time_ns() - start,
);
});
self.db.read().flush().expect("DB flush failed.");
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impl MayPanic for Client {
fn on_panic<F>(&self, closure: F) where F: OnPanicListener {
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self.panic_handler.on_panic(closure);
}
}
impl ProvingBlockChainClient for Client {
fn prove_storage(&self, key1: H256, key2: H256, from_level: u32, id: BlockId) -> Vec<Bytes> {
self.state_at(id)
.and_then(move |state| state.prove_storage(key1, key2, from_level).ok())
.unwrap_or_else(Vec::new)
fn prove_account(&self, key1: H256, from_level: u32, id: BlockId) -> Vec<Bytes> {
self.state_at(id)
.and_then(move |state| state.prove_account(key1, from_level).ok())
.unwrap_or_else(Vec::new)
fn code_by_hash(&self, account_key: H256, id: BlockId) -> Bytes {
self.state_at(id)
.and_then(move |state| state.code_by_address_hash(account_key).ok())
.and_then(|x| x)
.unwrap_or_else(Vec::new)
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#[cfg(test)]
mod tests {
#[test]
fn should_not_cache_details_before_commit() {
use client::BlockChainClient;
use tests::helpers::*;
use std::thread;
use std::time::Duration;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use util::kvdb::DBTransaction;
let client = generate_dummy_client(0);
let genesis = client.chain_info().best_block_hash;
let (new_hash, new_block) = get_good_dummy_block_hash();
let go = {
// Separate thread uncommited transaction
let go = Arc::new(AtomicBool::new(false));
let go_thread = go.clone();
let another_client = client.reference().clone();
thread::spawn(move || {
let mut batch = DBTransaction::new(&*another_client.chain.read().db().clone());
another_client.chain.read().insert_block(&mut batch, &new_block, Vec::new());
go_thread.store(true, Ordering::SeqCst);
});
go
};
while !go.load(Ordering::SeqCst) { thread::park_timeout(Duration::from_millis(5)); }
assert!(client.tree_route(&genesis, &new_hash).is_none());
}
}