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use std::sync::{Weak, Arc};
use rlp::{UntrustedRlp, View};
use ethcore::client::{BlockChainClient, CallAnalytics, TransactionId, TraceId};
use ethcore::miner::MinerService;
use ethcore::transaction::{Transaction as EthTransaction, SignedTransaction, Action};
use jsonrpc_core::Error;
use jsonrpc_macros::Trailing;
use v1::traits::Traces;
use v1::helpers::{errors, CallRequest as CRequest};
use v1::types::{TraceFilter, LocalizedTrace, BlockNumber, Index, CallRequest, Bytes, TraceResults, H256};
fn to_call_analytics(flags: Vec<String>) -> CallAnalytics {
CallAnalytics {
transaction_tracing: flags.contains(&("trace".to_owned())),
vm_tracing: flags.contains(&("vmTrace".to_owned())),
state_diffing: flags.contains(&("stateDiff".to_owned())),
}
}
pub struct TracesClient<C, M> where C: BlockChainClient, M: MinerService {
client: Weak<C>,
miner: Weak<M>,
}
impl<C, M> TracesClient<C, M> where C: BlockChainClient, M: MinerService {
pub fn new(client: &Arc<C>, miner: &Arc<M>) -> Self {
TracesClient {
client: Arc::downgrade(client),
miner: Arc::downgrade(miner),
}
}
fn sign_call(&self, request: CRequest) -> Result<SignedTransaction, Error> {
let client = take_weak!(self.client);
let miner = take_weak!(self.miner);
let from = request.from.unwrap_or(0.into());
Ok(EthTransaction {
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_price: request.gas_price.unwrap_or_else(|| miner.sensible_gas_price()),
value: request.value.unwrap_or(0.into()),
data: request.data.map_or_else(Vec::new, |d| d.to_vec())
}.fake_sign(from))
}
fn active(&self) -> Result<(), Error> {
take_weak!(self.client).keep_alive();
Ok(())
}
}
impl<C, M> Traces for TracesClient<C, M> where C: BlockChainClient + 'static, M: MinerService + 'static {
fn filter(&self, filter: TraceFilter) -> Result<Vec<LocalizedTrace>, Error> {
self.active()?;
let client = take_weak!(self.client);
let traces = client.filter_traces(filter.into());
let traces = traces.map_or_else(Vec::new, |traces| traces.into_iter().map(LocalizedTrace::from).collect());
Ok(traces)
}
fn block_traces(&self, block_number: BlockNumber) -> Result<Vec<LocalizedTrace>, Error> {
self.active()?;
let client = take_weak!(self.client);
let traces = client.block_traces(block_number.into());
let traces = traces.map_or_else(Vec::new, |traces| traces.into_iter().map(LocalizedTrace::from).collect());
Ok(traces)
}
fn transaction_traces(&self, transaction_hash: H256) -> Result<Vec<LocalizedTrace>, Error> {
self.active()?;
let client = take_weak!(self.client);
let traces = client.transaction_traces(TransactionId::Hash(transaction_hash.into()));
let traces = traces.map_or_else(Vec::new, |traces| traces.into_iter().map(LocalizedTrace::from).collect());
Ok(traces)
}
fn trace(&self, transaction_hash: H256, address: Vec<Index>) -> Result<Option<LocalizedTrace>, Error> {
self.active()?;
let client = take_weak!(self.client);
let id = TraceId {
transaction: TransactionId::Hash(transaction_hash.into()),
address: address.into_iter().map(|i| i.value()).collect()
};
let trace = client.trace(id);
let trace = trace.map(LocalizedTrace::from);
Ok(trace)
}
fn call(&self, request: CallRequest, flags: Vec<String>, block: Trailing<BlockNumber>) -> Result<Option<TraceResults>, Error> {
self.active()?;
let block = block.0;
let request = CallRequest::into(request);
let signed = self.sign_call(request)?;
Ok(match take_weak!(self.client).call(&signed, block.into(), to_call_analytics(flags)) {
Ok(e) => Some(TraceResults::from(e)),
_ => None,
})
}
fn raw_transaction(&self, raw_transaction: Bytes, flags: Vec<String>, block: Trailing<BlockNumber>) -> Result<Option<TraceResults>, Error> {
self.active()?;
let block = block.0;
UntrustedRlp::new(&raw_transaction.into_vec()).as_val()
.map_err(|e| errors::invalid_params("Transaction is not valid RLP", e))
.and_then(|tx| SignedTransaction::new(tx).map_err(errors::from_transaction_error))
.and_then(|signed| {
Ok(match take_weak!(self.client).call(&signed, block.into(), to_call_analytics(flags)) {
Ok(e) => Some(TraceResults::from(e)),
_ => None,
})
})
}
fn replay_transaction(&self, transaction_hash: H256, flags: Vec<String>) -> Result<Option<TraceResults>, Error> {
self.active()?;
Ok(match take_weak!(self.client).replay(TransactionId::Hash(transaction_hash.into()), to_call_analytics(flags)) {
Ok(e) => Some(TraceResults::from(e)),
_ => None,
})
}
}