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Multi-call RPC (#6195)

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* Removing duplicated pending state accessors in miner.

* Merge miner+client call.

* Multicall & multicall RPC.

* Sensible defaults.

* Fix tests.
This commit is contained in:
Tomasz Drwięga
2017-08-04 15:58:14 +02:00
committed by Marek Kotewicz
parent 62153b1ff0
commit f157461ee1
22 changed files with 308 additions and 271 deletions
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113
ethcore/src/miner/miner.rs
View File

@@ -21,8 +21,8 @@ use std::sync::Arc;
use util::*;
use using_queue::{UsingQueue, GetAction};
use account_provider::{AccountProvider, SignError as AccountError};
use state::{State, CleanupMode};
use client::{MiningBlockChainClient, Executive, Executed, EnvInfo, TransactOptions, BlockId, CallAnalytics, TransactionId};
use state::State;
use client::{MiningBlockChainClient, BlockId, TransactionId};
use client::TransactionImportResult;
use executive::contract_address;
use block::{ClosedBlock, IsBlock, Block};
@@ -39,7 +39,7 @@ use miner::local_transactions::{Status as LocalTransactionStatus};
use miner::service_transaction_checker::ServiceTransactionChecker;
use price_info::{Client as PriceInfoClient, PriceInfo};
use price_info::fetch::Client as FetchClient;
use header::BlockNumber;
use header::{Header, BlockNumber};
/// Different possible definitions for pending transaction set.
#[derive(Debug, PartialEq)]
@@ -331,13 +331,28 @@ impl Miner {
}
/// Get `Some` `clone()` of the current pending block's state or `None` if we're not sealing.
pub fn pending_state(&self) -> Option<State<::state_db::StateDB>> {
self.sealing_work.lock().queue.peek_last_ref().map(|b| b.block().fields().state.clone())
pub fn pending_state(&self, latest_block_number: BlockNumber) -> Option<State<::state_db::StateDB>> {
self.map_pending_block(|b| b.state().clone(), latest_block_number)
}
/// Get `Some` `clone()` of the current pending block or `None` if we're not sealing.
pub fn pending_block(&self) -> Option<Block> {
self.sealing_work.lock().queue.peek_last_ref().map(|b| b.to_base())
pub fn pending_block(&self, latest_block_number: BlockNumber) -> Option<Block> {
self.map_pending_block(|b| b.to_base(), latest_block_number)
}
/// Get `Some` `clone()` of the current pending block header or `None` if we're not sealing.
pub fn pending_block_header(&self, latest_block_number: BlockNumber) -> Option<Header> {
self.map_pending_block(|b| b.header().clone(), latest_block_number)
}
fn map_pending_block<F, T>(&self, f: F, latest_block_number: BlockNumber) -> Option<T> where
F: FnOnce(&ClosedBlock) -> T,
{
self.from_pending_block(
latest_block_number,
|| None,
|block| Some(f(block)),
)
}
#[cfg_attr(feature="dev", allow(match_same_arms))]
@@ -679,7 +694,7 @@ impl Miner {
#[cfg_attr(feature="dev", allow(wrong_self_convention))]
#[cfg_attr(feature="dev", allow(redundant_closure))]
fn from_pending_block<H, F, G>(&self, latest_block_number: BlockNumber, from_chain: F, map_block: G) -> H
where F: Fn() -> H, G: Fn(&ClosedBlock) -> H {
where F: Fn() -> H, G: FnOnce(&ClosedBlock) -> H {
let sealing_work = self.sealing_work.lock();
sealing_work.queue.peek_last_ref().map_or_else(
|| from_chain(),
@@ -717,84 +732,6 @@ impl MinerService for Miner {
}
}
fn call(&self, client: &MiningBlockChainClient, t: &SignedTransaction, analytics: CallAnalytics) -> Result<Executed, CallError> {
let sealing_work = self.sealing_work.lock();
match sealing_work.queue.peek_last_ref() {
Some(work) => {
let block = work.block();
// TODO: merge this code with client.rs's fn call somwhow.
let header = block.header();
let last_hashes = Arc::new(client.last_hashes());
let env_info = EnvInfo {
number: header.number(),
author: *header.author(),
timestamp: header.timestamp(),
difficulty: *header.difficulty(),
last_hashes: last_hashes,
gas_used: U256::zero(),
gas_limit: U256::max_value(),
};
// that's just a copy of the state.
let mut state = block.state().clone();
let original_state = if analytics.state_diffing { Some(state.clone()) } else { None };
let sender = t.sender();
let balance = state.balance(&sender).map_err(ExecutionError::from)?;
let needed_balance = t.value + t.gas * t.gas_price;
if balance < needed_balance {
// give the sender a sufficient balance
state.add_balance(&sender, &(needed_balance - balance), CleanupMode::NoEmpty)
.map_err(ExecutionError::from)?;
}
let options = TransactOptions { tracing: analytics.transaction_tracing, vm_tracing: analytics.vm_tracing, check_nonce: false };
let mut ret = Executive::new(&mut state, &env_info, &*self.engine).transact(t, options)?;
// TODO gav move this into Executive.
if let Some(original) = original_state {
ret.state_diff = Some(state.diff_from(original).map_err(ExecutionError::from)?);
}
Ok(ret)
},
None => client.call(t, BlockId::Latest, analytics)
}
}
// TODO: The `chain.latest_x` actually aren't infallible, they just panic on corruption.
// TODO: return trie::Result<T> here, or other.
fn balance(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<U256> {
self.from_pending_block(
chain.chain_info().best_block_number,
|| Some(chain.latest_balance(address)),
|b| b.block().fields().state.balance(address).ok(),
)
}
fn storage_at(&self, chain: &MiningBlockChainClient, address: &Address, position: &H256) -> Option<H256> {
self.from_pending_block(
chain.chain_info().best_block_number,
|| Some(chain.latest_storage_at(address, position)),
|b| b.block().fields().state.storage_at(address, position).ok(),
)
}
fn nonce(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<U256> {
self.from_pending_block(
chain.chain_info().best_block_number,
|| Some(chain.latest_nonce(address)),
|b| b.block().fields().state.nonce(address).ok(),
)
}
fn code(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<Option<Bytes>> {
self.from_pending_block(
chain.chain_info().best_block_number,
|| Some(chain.latest_code(address)),
|b| b.block().fields().state.code(address).ok().map(|c| c.map(|c| (&*c).clone()))
)
}
fn set_author(&self, author: Address) {
if self.engine.seals_internally().is_some() {
let mut sealing_work = self.sealing_work.lock();
@@ -1466,14 +1403,14 @@ mod tests {
miner.update_sealing(&*client);
client.flush_queue();
assert!(miner.pending_block().is_none());
assert!(miner.pending_block(0).is_none());
assert_eq!(client.chain_info().best_block_number, 3 as BlockNumber);
assert_eq!(miner.import_own_transaction(&*client, PendingTransaction::new(transaction_with_network_id(spec.network_id()).into(), None)).unwrap(), TransactionImportResult::Current);
miner.update_sealing(&*client);
client.flush_queue();
assert!(miner.pending_block().is_none());
assert!(miner.pending_block(0).is_none());
assert_eq!(client.chain_info().best_block_number, 4 as BlockNumber);
}

21
ethcore/src/miner/mod.rs
View File

@@ -62,12 +62,12 @@ pub use self::stratum::{Stratum, Error as StratumError, Options as StratumOption
use std::collections::BTreeMap;
use util::{H256, U256, Address, Bytes};
use client::{MiningBlockChainClient, Executed, CallAnalytics};
use client::{MiningBlockChainClient};
use block::ClosedBlock;
use header::BlockNumber;
use receipt::{RichReceipt, Receipt};
use error::{Error, CallError};
use transaction::{UnverifiedTransaction, PendingTransaction, SignedTransaction};
use error::{Error};
use transaction::{UnverifiedTransaction, PendingTransaction};
/// Miner client API
pub trait MinerService : Send + Sync {
@@ -185,21 +185,6 @@ pub trait MinerService : Send + Sync {
/// Suggested gas limit.
fn sensible_gas_limit(&self) -> U256 { 21000.into() }
/// Latest account balance in pending state.
fn balance(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<U256>;
/// Call into contract code using pending state.
fn call(&self, chain: &MiningBlockChainClient, t: &SignedTransaction, analytics: CallAnalytics) -> Result<Executed, CallError>;
/// Get storage value in pending state.
fn storage_at(&self, chain: &MiningBlockChainClient, address: &Address, position: &H256) -> Option<H256>;
/// Get account nonce in pending state.
fn nonce(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<U256>;
/// Get contract code in pending state.
fn code(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<Option<Bytes>>;
}
/// Mining status