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fix(anvil): print traces for eth_simulateV1 #11253

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Merged
merged 2 commits into from
Aug 8, 2025
Merged

fix(anvil): print traces for eth_simulateV1 #11253

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bbe97bb
fix(anvil): print traces for simulateV1
klkvr Aug 8, 2025
2794157
fix
klkvr Aug 8, 2025
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27 changes: 18 additions & 9 deletions crates/anvil/src/eth/backend/mem/inspector.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ use revm::{
interpreter::EthInterpreter,
},
};
use revm_inspectors::transfer::TransferInspector;
use std::sync::Arc;

/// The [`revm::Inspector`] used when transacting in the evm
Expand All @@ -28,6 +29,8 @@ pub struct AnvilInspector {
pub tracer: Option<TracingInspector>,
/// Collects all `console.sol` logs
pub log_collector: Option<LogCollector>,
/// Collects all internal ETH transfers as ERC20 transfer events.
pub transfer: Option<TransferInspector>,
}

impl AnvilInspector {
Expand Down Expand Up @@ -79,6 +82,12 @@ impl AnvilInspector {
self
}

/// Configures the `Tracer` [`revm::Inspector`] with a transfer event collector
pub fn with_transfers(mut self) -> Self {
self.transfer = Some(TransferInspector::new(false).with_logs(true));
self
}

/// Configures the `Tracer` [`revm::Inspector`] with a trace printer
pub fn with_trace_printer(mut self) -> Self {
self.tracer = Some(TracingInspector::new(TracingInspectorConfig::all().with_state_diffs()));
Expand Down Expand Up @@ -139,7 +148,7 @@ where
fn call(&mut self, ecx: &mut CTX, inputs: &mut CallInputs) -> Option<CallOutcome> {
call_inspectors!(
#[ret]
[&mut self.tracer, &mut self.log_collector],
[&mut self.tracer, &mut self.log_collector, &mut self.transfer],
|inspector| inspector.call(ecx, inputs).map(Some),
);
None
Expand All @@ -152,11 +161,11 @@ where
}

fn create(&mut self, ecx: &mut CTX, inputs: &mut CreateInputs) -> Option<CreateOutcome> {
if let Some(tracer) = &mut self.tracer
&& let Some(out) = tracer.create(ecx, inputs)
{
return Some(out);
}
call_inspectors!(
#[ret]
[&mut self.tracer, &mut self.transfer],
|inspector| inspector.create(ecx, inputs).map(Some),
);
None
}

Expand All @@ -168,9 +177,9 @@ where

#[inline]
fn selfdestruct(&mut self, contract: Address, target: Address, value: U256) {
if let Some(tracer) = &mut self.tracer {
<TracingInspector as Inspector<CTX>>::selfdestruct(tracer, contract, target, value);
}
call_inspectors!([&mut self.tracer, &mut self.transfer], |inspector| {
Inspector::<CTX, EthInterpreter>::selfdestruct(inspector, contract, target, value)
});
}
}

Expand Down
11 changes: 8 additions & 3 deletions crates/anvil/src/eth/backend/mem/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -118,7 +118,6 @@ use revm::{
primitives::{KECCAK_EMPTY, hardfork::SpecId},
state::AccountInfo,
};
use revm_inspectors::transfer::TransferInspector;
use std::{
collections::BTreeMap,
fmt::Debug,
Expand Down Expand Up @@ -1693,11 +1692,13 @@ impl Backend {
env.evm_env.block_env.basefee = 0;
}

let mut inspector = self.build_inspector();

// transact
let ResultAndState { result, state } = if trace_transfers {
// prepare inspector to capture transfer inside the evm so they are
// recorded and included in logs
let mut inspector = TransferInspector::new(false).with_logs(true);
inspector = inspector.with_transfers();
let mut evm= self.new_evm_with_inspector_ref(
&cache_db as &dyn DatabaseRef,
&env,
Expand All @@ -1707,7 +1708,6 @@ impl Backend {
trace!(target: "backend", env=?env.evm_env, spec=?env.evm_env.spec_id(),"simulate evm env");
evm.transact(env.tx)?
} else {
let mut inspector = self.build_inspector();
let mut evm = self.new_evm_with_inspector_ref(
&cache_db as &dyn DatabaseRef,
&env,
Expand All @@ -1718,6 +1718,11 @@ impl Backend {
};
trace!(target: "backend", ?result, ?request, "simulate call");

inspector.print_logs();
if self.print_traces {
inspector.into_print_traces(self.call_trace_decoder.clone());
}

// commit the transaction
cache_db.commit(state);
gas_used += result.gas_used();
Expand Down
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