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[beta] Increase default gas limit for eth_call (#6337)

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* Increase default gas limit for eth_call.

* Fix balance increase.

* Cap gas limit for dapp-originating requests.
This commit is contained in:
Arkadiy Paronyan 2017-08-20 08:14:32 +02:00 committed by Gav Wood
parent 4992064663
commit 7bf840f80a
10 changed files with 56 additions and 24 deletions
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2
ethcore/src/executive.rs
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@ -155,7 +155,7 @@ impl<'a, B: 'a + StateBackend, E: Engine + ?Sized> Executive<'a, B, E> {
pub fn transact_virtual(&'a mut self, t: &SignedTransaction, options: TransactOptions) -> Result<Executed, ExecutionError> {
let sender = t.sender();
let balance = self.state.balance(&sender)?;
let needed_balance = t.value + t.gas * t.gas_price;
let needed_balance = t.value.saturating_add(t.gas.saturating_mul(t.gas_price));
if balance < needed_balance {
// give the sender a sufficient balance
self.state.add_balance(&sender, &(needed_balance - balance), CleanupMode::NoEmpty)?;

12
rpc/src/v1/helpers/fake_sign.rs
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@ -18,6 +18,7 @@ use std::sync::Arc;
use ethcore::client::MiningBlockChainClient;
use ethcore::miner::MinerService;
use ethcore::transaction::{Transaction, SignedTransaction, Action};
use util::U256;
use jsonrpc_core::Error;
use v1::helpers::CallRequest;
@ -27,13 +28,22 @@ pub fn sign_call<B: MiningBlockChainClient, M: MinerService>(
client: &Arc<B>,
miner: &Arc<M>,
request: CallRequest,
gas_cap: bool,
) -> Result<SignedTransaction, Error> {
let from = request.from.unwrap_or(0.into());
let mut gas = request.gas.unwrap_or(U256::max_value());
if gas_cap {
let max_gas = 50_000_000.into();
if gas > max_gas {
warn!("Gas limit capped to {} (from {})", max_gas, gas);
gas = max_gas
}
}
Ok(Transaction {
nonce: request.nonce.unwrap_or_else(|| client.latest_nonce(&from)),
action: request.to.map_or(Action::Create, Action::Call),
gas: request.gas.unwrap_or(50_000_000.into()),
gas,
gas_price: request.gas_price.unwrap_or_else(|| default_gas_price(&**client, &**miner)),
value: request.value.unwrap_or(0.into()),
data: request.data.unwrap_or_default(),

8
rpc/src/v1/impls/eth.rs
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@ -641,9 +641,9 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM> Eth for EthClient<C, SN, S, M, EM> where
self.send_raw_transaction(raw)
}
fn call(&self, request: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<Bytes, Error> {
fn call(&self, meta: Self::Metadata, request: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<Bytes, Error> {
let request = CallRequest::into(request);
let signed = match fake_sign::sign_call(&self.client, &self.miner, request) {
let signed = match fake_sign::sign_call(&self.client, &self.miner, request, meta.is_dapp()) {
Ok(signed) => signed,
Err(e) => return future::err(e).boxed(),
};
@ -659,9 +659,9 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM> Eth for EthClient<C, SN, S, M, EM> where
).boxed()
}
fn estimate_gas(&self, request: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<RpcU256, Error> {
fn estimate_gas(&self, meta: Self::Metadata, request: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<RpcU256, Error> {
let request = CallRequest::into(request);
let signed = match fake_sign::sign_call(&self.client, &self.miner, request) {
let signed = match fake_sign::sign_call(&self.client, &self.miner, request, meta.is_dapp()) {
Ok(signed) => signed,
Err(e) => return future::err(e).boxed(),
};

4
rpc/src/v1/impls/light/eth.rs
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@ -383,7 +383,7 @@ impl Eth for EthClient {
self.send_raw_transaction(raw)
}
fn call(&self, req: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<Bytes, Error> {
fn call(&self, _meta: Self::Metadata, req: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<Bytes, Error> {
self.fetcher().proved_execution(req, num).and_then(|res| {
match res {
Ok(exec) => Ok(exec.output.into()),
@ -392,7 +392,7 @@ impl Eth for EthClient {
}).boxed()
}
fn estimate_gas(&self, req: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<RpcU256, Error> {
fn estimate_gas(&self, _meta: Self::Metadata, req: CallRequest, num: Trailing<BlockNumber>) -> BoxFuture<RpcU256, Error> {
// TODO: binary chop for more accurate estimates.
self.fetcher().proved_execution(req, num).and_then(|res| {
match res {

8
rpc/src/v1/impls/light/trace.rs
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@ -17,7 +17,9 @@
//! Traces api implementation.
use jsonrpc_core::Error;
use jsonrpc_core::futures::{future, Future, BoxFuture};
use jsonrpc_macros::Trailing;
use v1::Metadata;
use v1::traits::Traces;
use v1::helpers::errors;
use v1::types::{TraceFilter, LocalizedTrace, BlockNumber, Index, CallRequest, Bytes, TraceResults, H256};
@ -27,6 +29,8 @@ use v1::types::{TraceFilter, LocalizedTrace, BlockNumber, Index, CallRequest, By
pub struct TracesClient;
impl Traces for TracesClient {
type Metadata = Metadata;
fn filter(&self, _filter: TraceFilter) -> Result<Option<Vec<LocalizedTrace>>, Error> {
Err(errors::light_unimplemented(None))
}
@ -43,8 +47,8 @@ impl Traces for TracesClient {
Err(errors::light_unimplemented(None))
}
fn call(&self, _request: CallRequest, _flags: Vec<String>, _block: Trailing<BlockNumber>) -> Result<TraceResults, Error> {
Err(errors::light_unimplemented(None))
fn call(&self, _meta: Self::Metadata, _request: CallRequest, _flags: Vec<String>, _block: Trailing<BlockNumber>) -> BoxFuture<TraceResults, Error> {
future::err(errors::light_unimplemented(None)).boxed()
}
fn raw_transaction(&self, _raw_transaction: Bytes, _flags: Vec<String>, _block: Trailing<BlockNumber>) -> Result<TraceResults, Error> {

16
rpc/src/v1/impls/traces.rs
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@ -18,13 +18,15 @@
use std::sync::Arc;
use rlp::UntrustedRlp;
use ethcore::client::{MiningBlockChainClient, CallAnalytics, TransactionId, TraceId};
use ethcore::miner::MinerService;
use ethcore::transaction::SignedTransaction;
use rlp::UntrustedRlp;
use jsonrpc_core::Error;
use jsonrpc_core::futures::{self, Future, BoxFuture};
use jsonrpc_macros::Trailing;
use v1::Metadata;
use v1::traits::Traces;
use v1::helpers::{errors, fake_sign};
use v1::types::{TraceFilter, LocalizedTrace, BlockNumber, Index, CallRequest, Bytes, TraceResults, H256};
@ -54,6 +56,8 @@ impl<C, M> TracesClient<C, M> {
}
impl<C, M> Traces for TracesClient<C, M> where C: MiningBlockChainClient + 'static, M: MinerService + 'static {
type Metadata = Metadata;
fn filter(&self, filter: TraceFilter) -> Result<Option<Vec<LocalizedTrace>>, Error> {
Ok(self.client.filter_traces(filter.into())
.map(|traces| traces.into_iter().map(LocalizedTrace::from).collect()))
@ -79,15 +83,17 @@ impl<C, M> Traces for TracesClient<C, M> where C: MiningBlockChainClient + 'stat
.map(LocalizedTrace::from))
}
fn call(&self, request: CallRequest, flags: Vec<String>, block: Trailing<BlockNumber>) -> Result<TraceResults, Error> {
fn call(&self, meta: Self::Metadata, request: CallRequest, flags: Vec<String>, block: Trailing<BlockNumber>) -> BoxFuture<TraceResults, Error> {
let block = block.unwrap_or_default();
let request = CallRequest::into(request);
let signed = fake_sign::sign_call(&self.client, &self.miner, request)?;
let signed = try_bf!(fake_sign::sign_call(&self.client, &self.miner, request, meta.is_dapp()));
self.client.call(&signed, block.into(), to_call_analytics(flags))
let res = self.client.call(&signed, block.into(), to_call_analytics(flags))
.map(TraceResults::from)
.map_err(errors::call)
.map_err(errors::call);
futures::done(res).boxed()
}
fn raw_transaction(&self, raw_transaction: Bytes, flags: Vec<String>, block: Trailing<BlockNumber>) -> Result<TraceResults, Error> {

9
rpc/src/v1/metadata.rs
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@ -42,6 +42,15 @@ impl Metadata {
_ => DappId::default(),
}
}
/// Returns true if the request originates from a Dapp.
pub fn is_dapp(&self) -> bool {
if let Origin::Dapps(_) = self.origin {
true
} else {
false
}
}
}
impl jsonrpc_core::Metadata for Metadata {}

6
rpc/src/v1/tests/mocked/traces.rs
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@ -25,12 +25,12 @@ use evm::CallType;
use jsonrpc_core::IoHandler;
use v1::tests::helpers::{TestMinerService};
use v1::{Traces, TracesClient};
use v1::{Metadata, Traces, TracesClient};
struct Tester {
client: Arc<TestBlockChainClient>,
_miner: Arc<TestMinerService>,
io: IoHandler,
io: IoHandler<Metadata>,
}
fn io() -> Tester {
@ -67,7 +67,7 @@ fn io() -> Tester {
}));
let miner = Arc::new(TestMinerService::default());
let traces = TracesClient::new(&client, &miner);
let mut io = IoHandler::new();
let mut io = IoHandler::default();
io.extend_with(traces.to_delegate());
Tester {

8
rpc/src/v1/traits/eth.rs
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@ -110,12 +110,12 @@ build_rpc_trait! {
fn submit_transaction(&self, Bytes) -> Result<H256, Error>;
/// Call contract, returning the output data.
#[rpc(async, name = "eth_call")]
fn call(&self, CallRequest, Trailing<BlockNumber>) -> BoxFuture<Bytes, Error>;
#[rpc(meta, name = "eth_call")]
fn call(&self, Self::Metadata, CallRequest, Trailing<BlockNumber>) -> BoxFuture<Bytes, Error>;
/// Estimate gas needed for execution of given contract.
#[rpc(async, name = "eth_estimateGas")]
fn estimate_gas(&self, CallRequest, Trailing<BlockNumber>) -> BoxFuture<U256, Error>;
#[rpc(meta, name = "eth_estimateGas")]
fn estimate_gas(&self, Self::Metadata, CallRequest, Trailing<BlockNumber>) -> BoxFuture<U256, Error>;
/// Get transaction by its hash.
#[rpc(name = "eth_getTransactionByHash")]

7
rpc/src/v1/traits/traces.rs
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@ -17,12 +17,15 @@
//! Traces specific rpc interface.
use jsonrpc_core::Error;
use jsonrpc_core::futures::BoxFuture;
use jsonrpc_macros::Trailing;
use v1::types::{TraceFilter, LocalizedTrace, BlockNumber, Index, CallRequest, Bytes, TraceResults, H256};
build_rpc_trait! {
/// Traces specific rpc interface.
pub trait Traces {
type Metadata;
/// Returns traces matching given filter.
#[rpc(name = "trace_filter")]
fn filter(&self, TraceFilter) -> Result<Option<Vec<LocalizedTrace>>, Error>;
@ -40,8 +43,8 @@ build_rpc_trait! {
fn block_traces(&self, BlockNumber) -> Result<Option<Vec<LocalizedTrace>>, Error>;
/// Executes the given call and returns a number of possible traces for it.
#[rpc(name = "trace_call")]
fn call(&self, CallRequest, Vec<String>, Trailing<BlockNumber>) -> Result<TraceResults, Error>;
#[rpc(meta, name = "trace_call")]
fn call(&self, Self::Metadata, CallRequest, Vec<String>, Trailing<BlockNumber>) -> BoxFuture<TraceResults, Error>;
/// Executes the given raw transaction and returns a number of possible traces for it.
#[rpc(name = "trace_rawTransaction")]