Remove unneeded dependency

Cargo.lock

@@ -4012,7 +4012,6 @@ version = "0.1.0"
 dependencies = [
  "alloy",
  "anyhow",
- "futures",
  "once_cell",
  "tokio",
  "tracing",

Cargo.toml

@@ -25,7 +25,6 @@ alloy-primitives = "1.2.1"
 alloy-sol-types = "1.2.1"
 anyhow = "1.0"
 clap = { version = "4", features = ["derive"] }
-futures = { version = "0.3.31" }
 hex = "0.4.3"
 reqwest = { version = "0.12.15", features = ["blocking", "json"] }
 once_cell = "1.21"

crates/compiler/src/lib.rs

@@ -44,12 +44,9 @@ pub trait SolidityCompiler {
 pub struct CompilerInput<T: PartialEq + Eq + Hash> {
     pub extra_options: T,
     pub input: SolcStandardJsonInput,
-    pub allow_paths: Vec<PathBuf>,
-    pub base_path: Option<PathBuf>,
 }
 
 /// The generic compilation output configuration.
-#[derive(Debug)]
 pub struct CompilerOutput<T: PartialEq + Eq + Hash> {
     /// The solc standard JSON input.
     pub input: CompilerInput<T>,
@@ -86,8 +83,8 @@ where
 pub struct Compiler<T: SolidityCompiler> {
     input: SolcStandardJsonInput,
     extra_options: T::Options,
-    allow_paths: Vec<PathBuf>,
+    allow_paths: Vec<String>,
-    base_path: Option<PathBuf>,
+    base_path: Option<String>,
 }
 
 impl Default for Compiler<solc::Solc> {
@@ -148,12 +145,12 @@ where
         self
     }
 
-    pub fn allow_path(mut self, path: PathBuf) -> Self {
+    pub fn allow_path(mut self, path: String) -> Self {
         self.allow_paths.push(path);
         self
     }
 
-    pub fn base_path(mut self, base_path: PathBuf) -> Self {
+    pub fn base_path(mut self, base_path: String) -> Self {
         self.base_path = Some(base_path);
         self
     }
@@ -162,8 +159,6 @@ where
         T::new(solc_path).build(CompilerInput {
             extra_options: self.extra_options,
             input: self.input,
-            allow_paths: self.allow_paths,
-            base_path: self.base_path,
         })
     }
 

crates/compiler/src/revive_resolc.rs

@@ -11,7 +11,6 @@ use revive_dt_config::Arguments;
 use revive_solc_json_interface::SolcStandardJsonOutput;
 
 /// A wrapper around the `resolc` binary, emitting PVM-compatible bytecode.
-#[derive(Debug)]
 pub struct Resolc {
     /// Path to the `resolc` executable
     resolc_path: PathBuf,
@@ -20,32 +19,17 @@ pub struct Resolc {
 impl SolidityCompiler for Resolc {
     type Options = Vec<String>;
 
-    #[tracing::instrument(level = "debug", ret)]
     fn build(
         &self,
         input: CompilerInput<Self::Options>,
     ) -> anyhow::Result<CompilerOutput<Self::Options>> {
-        let mut command = Command::new(&self.resolc_path);
+        let mut child = Command::new(&self.resolc_path)
-        command
+            .arg("--standard-json")
+            .args(&input.extra_options)
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
-            .arg("--standard-json");
+            .spawn()?;
-
-        if let Some(ref base_path) = input.base_path {
-            command.arg("--base-path").arg(base_path);
-        }
-        if !input.allow_paths.is_empty() {
-            command.arg("--allow-paths").arg(
-                input
-                    .allow_paths
-                    .iter()
-                    .map(|path| path.display().to_string())
-                    .collect::<Vec<_>>()
-                    .join(","),
-            );
-        }
-        let mut child = command.spawn()?;
 
         let stdin_pipe = child.stdin.as_mut().expect("stdin must be piped");
         serde_json::to_writer(stdin_pipe, &input.input)?;
@@ -71,64 +55,12 @@ impl SolidityCompiler for Resolc {
             });
         }
 
-        let mut parsed =
+        let parsed: SolcStandardJsonOutput = serde_json::from_slice(&stdout).map_err(|e| {
-            serde_json::from_slice::<SolcStandardJsonOutput>(&stdout).map_err(|e| {
+            anyhow::anyhow!(
-                anyhow::anyhow!(
+                "failed to parse resolc JSON output: {e}\nstderr: {}",
-                    "failed to parse resolc JSON output: {e}\nstderr: {}",
+                String::from_utf8_lossy(&stderr)
-                    String::from_utf8_lossy(&stderr)
+            )
-                )
+        })?;
-            })?;
-
-        // Detecting if the compiler output contained errors and reporting them through logs and
-        // errors instead of returning the compiler output that might contain errors.
-        for error in parsed.errors.iter().flatten() {
-            if error.severity == "error" {
-                tracing::error!(?error, ?input, "Encountered an error in the compilation");
-                anyhow::bail!("Encountered an error in the compilation: {error}")
-            }
-        }
-
-        // We need to do some post processing on the output to make it in the same format that solc
-        // outputs. More specifically, for each contract, the `.metadata` field should be replaced
-        // with the `.metadata.solc_metadata` field which contains the ABI and other information
-        // about the compiled contracts. We do this because we do not want any downstream logic to
-        // need to differentiate between which compiler is being used when extracting the ABI of the
-        // contracts.
-        if let Some(ref mut contracts) = parsed.contracts {
-            for (contract_path, contracts_map) in contracts.iter_mut() {
-                for (contract_name, contract_info) in contracts_map.iter_mut() {
-                    let Some(metadata) = contract_info.metadata.take() else {
-                        continue;
-                    };
-
-                    // Get the `solc_metadata` in the metadata of the contract.
-                    let Some(solc_metadata) = metadata
-                        .get("solc_metadata")
-                        .and_then(|metadata| metadata.as_str())
-                    else {
-                        tracing::error!(
-                            contract_path,
-                            contract_name,
-                            metadata = serde_json::to_string(&metadata).unwrap(),
-                            "Encountered a contract compiled with resolc that has no solc_metadata"
-                        );
-                        anyhow::bail!(
-                            "Contract {} compiled with resolc that has no solc_metadata",
-                            contract_name
-                        );
-                    };
-
-                    // Replace the original metadata with the new solc_metadata.
-                    contract_info.metadata =
-                        Some(serde_json::Value::String(solc_metadata.to_string()));
-                }
-            }
-        }
-
-        tracing::debug!(
-            output = %serde_json::to_string(&parsed).unwrap(),
-            "Compiled successfully"
-        );
 
         Ok(CompilerOutput {
             input,

crates/compiler/src/solc.rs

@@ -9,9 +9,7 @@ use std::{
 use crate::{CompilerInput, CompilerOutput, SolidityCompiler};
 use revive_dt_config::Arguments;
 use revive_dt_solc_binaries::download_solc;
-use revive_solc_json_interface::SolcStandardJsonOutput;
 
-#[derive(Debug)]
 pub struct Solc {
     solc_path: PathBuf,
 }
@@ -19,32 +17,16 @@ pub struct Solc {
 impl SolidityCompiler for Solc {
     type Options = ();
 
-    #[tracing::instrument(level = "debug", ret)]
     fn build(
         &self,
         input: CompilerInput<Self::Options>,
     ) -> anyhow::Result<CompilerOutput<Self::Options>> {
-        let mut command = Command::new(&self.solc_path);
+        let mut child = Command::new(&self.solc_path)
-        command
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
-            .arg("--standard-json");
+            .arg("--standard-json")
-
+            .spawn()?;
-        if let Some(ref base_path) = input.base_path {
-            command.arg("--base-path").arg(base_path);
-        }
-        if !input.allow_paths.is_empty() {
-            command.arg("--allow-paths").arg(
-                input
-                    .allow_paths
-                    .iter()
-                    .map(|path| path.display().to_string())
-                    .collect::<Vec<_>>()
-                    .join(","),
-            );
-        }
-        let mut child = command.spawn()?;
 
         let stdin = child.stdin.as_mut().expect("should be piped");
         serde_json::to_writer(stdin, &input.input)?;
@@ -60,31 +42,9 @@ impl SolidityCompiler for Solc {
             });
         }
 
-        let parsed =
-            serde_json::from_slice::<SolcStandardJsonOutput>(&output.stdout).map_err(|e| {
-                anyhow::anyhow!(
-                    "failed to parse resolc JSON output: {e}\nstderr: {}",
-                    String::from_utf8_lossy(&output.stdout)
-                )
-            })?;
-
-        // Detecting if the compiler output contained errors and reporting them through logs and
-        // errors instead of returning the compiler output that might contain errors.
-        for error in parsed.errors.iter().flatten() {
-            if error.severity == "error" {
-                tracing::error!(?error, ?input, "Encountered an error in the compilation");
-                anyhow::bail!("Encountered an error in the compilation: {error}")
-            }
-        }
-
-        tracing::debug!(
-            output = %String::from_utf8_lossy(&output.stdout).to_string(),
-            "Compiled successfully"
-        );
-
         Ok(CompilerOutput {
             input,
-            output: parsed,
+            output: serde_json::from_slice(&output.stdout)?,
             error: None,
         })
     }

crates/core/src/driver/mod.rs

@@ -1,11 +1,11 @@
 //! The test driver handles the compilation and execution of the test cases.
 
 use alloy::json_abi::JsonAbi;
-use alloy::network::TransactionBuilder;
+use alloy::primitives::Bytes;
-use alloy::rpc::types::TransactionReceipt;
 use alloy::rpc::types::trace::geth::GethTrace;
+use alloy::rpc::types::{TransactionInput, TransactionReceipt};
 use alloy::{
-    primitives::{Address, map::HashMap},
+    primitives::{Address, TxKind, map::HashMap},
     rpc::types::{
         TransactionRequest,
         trace::geth::{AccountState, DiffMode},
@@ -69,13 +69,14 @@ where
             anyhow::bail!("unsupported solc version: {:?}", &mode.solc_version);
         };
 
-        let compiler = Compiler::<T::Compiler>::new()
+        let mut compiler = Compiler::<T::Compiler>::new()
-            .allow_path(metadata.directory()?)
+            .base_path(metadata.directory()?.display().to_string())
             .solc_optimizer(mode.solc_optimize());
 
-        let compiler = FilesWithExtensionIterator::new(metadata.directory()?)
+        for (file, _contract) in metadata.contract_sources()?.values() {
-            .with_allowed_extension("sol")
+            tracing::debug!("contract source {}", file.display());
-            .try_fold(compiler, |compiler, path| compiler.with_source(&path))?;
+            compiler = compiler.with_source(file)?;
+        }
 
         let mut task = CompilationTask {
             json_input: compiler.input(),
@@ -134,17 +135,21 @@ where
             std::any::type_name::<T>()
         );
 
-        let tx =
+        let tx = match input.legacy_transaction(
-            match input.legacy_transaction(nonce, &self.deployed_contracts, &self.deployed_abis) {
+            self.config.network_id,
-                Ok(tx) => {
+            nonce,
-                    tracing::debug!("Legacy transaction data: {tx:#?}");
+            &self.deployed_contracts,
-                    tx
+            &self.deployed_abis,
-                }
+        ) {
-                Err(err) => {
+            Ok(tx) => {
-                    tracing::error!("Failed to construct legacy transaction: {err:?}");
+                tracing::debug!("Legacy transaction data: {tx:#?}");
-                    return Err(err);
+                tx
-                }
+            }
-            };
+            Err(err) => {
+                tracing::error!("Failed to construct legacy transaction: {err:?}");
+                return Err(err);
+            }
+        };
 
         tracing::trace!("Executing transaction for input: {input:?}");
 
@@ -179,15 +184,12 @@ where
     }
 
     pub fn deploy_contracts(&mut self, input: &Input, node: &T::Blockchain) -> anyhow::Result<()> {
-        let tracing_span = tracing::debug_span!(
+        tracing::debug!(
-            "Deploying contracts",
+            "Deploying contracts {}, having address {} on node: {}",
-            ?input,
+            &input.instance,
-            node = std::any::type_name::<T>()
+            &input.caller,
+            std::any::type_name::<T>()
         );
-        let _guard = tracing_span.enter();
-
-        tracing::debug!(number_of_contracts_to_deploy = self.contracts.len());
-
         for output in self.contracts.values() {
             let Some(contract_map) = &output.contracts else {
                 tracing::debug!(
@@ -199,9 +201,6 @@ where
 
             for contracts in contract_map.values() {
                 for (contract_name, contract) in contracts {
-                    let tracing_span = tracing::info_span!("Deploying contract", contract_name);
-                    let _guard = tracing_span.enter();
-
                     tracing::debug!(
                         "Contract name is: {:?} and the input name is: {:?}",
                         &contract_name,
@@ -229,14 +228,16 @@ where
                         std::any::type_name::<T>()
                     );
 
-                    // We are using alloy for building and submitting the transactions and it will
+                    let tx = TransactionRequest {
-                    // automatically fill in all of the missing fields from the provider that we
+                        from: Some(input.caller),
-                    // are using.
+                        to: Some(TxKind::Create),
-                    let code = alloy::hex::decode(&code)?;
+                        gas_price: Some(5_000_000),
-                    let tx = TransactionRequest::default()
+                        gas: Some(5_000_000),
-                        .nonce(nonce)
+                        chain_id: Some(self.config.network_id),
-                        .from(input.caller)
+                        nonce: Some(nonce),
-                        .with_deploy_code(code);
+                        input: TransactionInput::new(Bytes::from(code.into_bytes())),
+                        ..Default::default()
+                    };
 
                     let receipt = match node.execute_transaction(tx) {
                         Ok(receipt) => receipt,
@@ -282,40 +283,51 @@ where
                         std::any::type_name::<T>()
                     );
 
-                    let Some(Value::String(metadata)) = &contract.metadata else {
+                    if let Some(Value::String(metadata_json_str)) = &contract.metadata {
-                        tracing::error!(?contract, "Contract does not have a metadata field");
+                        tracing::trace!(
-                        anyhow::bail!("Contract does not have a metadata field: {contract:?}");
+                            "metadata found for contract {contract_name}, {metadata_json_str}"
-                    };
-
-                    // Deserialize the solc metadata into a JSON object so we can get the ABI of the
-                    // contracts. If we fail to perform the deserialization then we return an error
-                    // as there's no other way to handle this.
-                    let Ok(metadata) = serde_json::from_str::<Value>(metadata) else {
-                        tracing::error!(%metadata, "Failed to parse solc metadata into a structured value");
-                        anyhow::bail!(
-                            "Failed to parse solc metadata into a structured value {metadata}"
                         );
-                    };
 
-                    // Accessing the ABI on the solc metadata and erroring if the accessing failed
+                        match serde_json::from_str::<serde_json::Value>(metadata_json_str) {
-                    let Some(abi) = metadata.get("output").and_then(|value| value.get("abi"))
+                            Ok(metadata_json) => {
-                    else {
+                                if let Some(abi_value) =
-                        tracing::error!(%metadata, "Failed to access the .output.abi field of the solc metadata");
+                                    metadata_json.get("output").and_then(|o| o.get("abi"))
-                        anyhow::bail!(
+                                {
-                            "Failed to access the .output.abi field of the solc metadata {metadata}"
+                                    match serde_json::from_value::<JsonAbi>(abi_value.clone()) {
-                        );
+                                        Ok(parsed_abi) => {
-                    };
+                                            tracing::trace!(
-
+                                                "ABI found in metadata for contract {}",
-                    // Deserialize the ABI object that we got from the unstructured JSON into a
+                                                &contract_name
-                    // structured ABI object and error out if we fail.
+                                            );
-                    let Ok(abi) = serde_json::from_value::<JsonAbi>(abi.clone()) else {
+                                            self.deployed_abis
-                        tracing::error!(%metadata, "Failed to deserialize ABI into a structured format");
+                                                .insert(contract_name.clone(), parsed_abi);
-                        anyhow::bail!(
+                                        }
-                            "Failed to deserialize ABI into a structured format {metadata}"
+                                        Err(err) => {
-                        );
+                                            anyhow::bail!(
-                    };
+                                                "Failed to parse ABI from metadata for contract {}: {}",
-
+                                                contract_name,
-                    self.deployed_abis.insert(contract_name.clone(), abi);
+                                                err
+                                            );
+                                        }
+                                    }
+                                } else {
+                                    anyhow::bail!(
+                                        "No ABI found in metadata for contract {}",
+                                        contract_name
+                                    );
+                                }
+                            }
+                            Err(err) => {
+                                anyhow::bail!(
+                                    "Failed to parse metadata JSON string for contract {}: {}",
+                                    contract_name,
+                                    err
+                                );
+                            }
+                        }
+                    } else {
+                        anyhow::bail!("No metadata found for contract {}", contract_name);
+                    }
                 }
             }
         }
@@ -467,77 +479,3 @@ where
         Ok(())
     }
 }
-
-/// An iterator that finds files of a certain extension in the provided directory. You can think of
-/// this a glob pattern similar to: `${path}/**/*.md`
-struct FilesWithExtensionIterator {
-    /// The set of allowed extensions that that match the requirement and that should be returned
-    /// when found.
-    allowed_extensions: std::collections::HashSet<std::borrow::Cow<'static, str>>,
-
-    /// The set of directories to visit next. This iterator does BFS and so these directories will
-    /// only be visited if we can't find any files in our state.
-    directories_to_search: Vec<std::path::PathBuf>,
-
-    /// The set of files matching the allowed extensions that were found. If there are entries in
-    /// this vector then they will be returned when the [`Iterator::next`] method is called. If not
-    /// then we visit one of the next directories to visit.
-    ///
-    /// [`Iterator`]: std::iter::Iterator
-    files_matching_allowed_extensions: Vec<std::path::PathBuf>,
-}
-
-impl FilesWithExtensionIterator {
-    fn new(root_directory: std::path::PathBuf) -> Self {
-        Self {
-            allowed_extensions: Default::default(),
-            directories_to_search: vec![root_directory],
-            files_matching_allowed_extensions: Default::default(),
-        }
-    }
-
-    fn with_allowed_extension(
-        mut self,
-        allowed_extension: impl Into<std::borrow::Cow<'static, str>>,
-    ) -> Self {
-        self.allowed_extensions.insert(allowed_extension.into());
-        self
-    }
-}
-
-impl Iterator for FilesWithExtensionIterator {
-    type Item = std::path::PathBuf;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        if let Some(file_path) = self.files_matching_allowed_extensions.pop() {
-            return Some(file_path);
-        };
-
-        let directory_to_search = self.directories_to_search.pop()?;
-
-        // Read all of the entries in the directory. If we failed to read this dir's entires then we
-        // elect to just ignore it and look in the next directory, we do that by calling the next
-        // method again on the iterator, which is an intentional decision that we made here instead
-        // of panicking.
-        let Ok(dir_entries) = std::fs::read_dir(directory_to_search) else {
-            return self.next();
-        };
-
-        for entry in dir_entries.flatten() {
-            let entry_path = entry.path();
-            if entry_path.is_dir() {
-                self.directories_to_search.push(entry_path)
-            } else if entry_path.is_file()
-                && entry_path.extension().is_some_and(|ext| {
-                    self.allowed_extensions
-                        .iter()
-                        .any(|allowed| ext.eq_ignore_ascii_case(allowed.as_ref()))
-                })
-            {
-                self.files_matching_allowed_extensions.push(entry_path)
-            }
-        }
-
-        self.next()
-    }
-}

crates/format/src/input.rs

@@ -1,13 +1,15 @@
 use std::collections::HashMap;
 
 use alloy::{
-    json_abi::JsonAbi,
+    hex,
-    network::TransactionBuilder,
+    json_abi::{Function, JsonAbi},
-    primitives::{Address, Bytes, U256},
+    primitives::{Address, Bytes, TxKind},
-    rpc::types::TransactionRequest,
+    rpc::types::{TransactionInput, TransactionRequest},
 };
+use alloy_primitives::U256;
+use alloy_sol_types::SolValue;
 use semver::VersionReq;
-use serde::Deserialize;
+use serde::{Deserialize, de::Deserializer};
 use serde_json::Value;
 
 #[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
@@ -17,6 +19,7 @@ pub struct Input {
     pub comment: Option<String>,
     #[serde(default = "default_instance")]
     pub instance: String,
+    #[serde(deserialize_with = "deserialize_method")]
     pub method: Method,
     pub calldata: Option<Calldata>,
     pub expected: Option<Expected>,
@@ -44,28 +47,58 @@ pub struct ExpectedOutput {
 #[serde(untagged)]
 pub enum Calldata {
     Single(String),
-    Compound(Vec<String>),
+    Compound(Vec<CalldataArg>),
+}
+
+#[derive(Clone, Debug, Deserialize, Eq, PartialEq)]
+#[serde(untagged)]
+pub enum CalldataArg {
+    Literal(String),
+    /// For example: `Contract.address`
+    AddressRef(String),
 }
 
 /// Specify how the contract is called.
-#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+#[derive(Debug, Default, Clone, Eq, PartialEq)]
 pub enum Method {
     /// Initiate a deploy transaction, calling contracts constructor.
     ///
     /// Indicated by `#deployer`.
-    #[serde(rename = "#deployer")]
     Deployer,
-
     /// Does not calculate and insert a function selector.
     ///
     /// Indicated by `#fallback`.
     #[default]
-    #[serde(rename = "#fallback")]
     Fallback,
+    /// Call the public function with this selector.
+    ///
+    /// Calculates the selector if neither deployer or fallback matches.
+    Function([u8; 4]),
+}
 
-    /// Call the public function with the given name.
+fn deserialize_method<'de, D>(deserializer: D) -> Result<Method, D::Error>
-    #[serde(untagged)]
+where
-    FunctionName(String),
+    D: Deserializer<'de>,
+{
+    Ok(match String::deserialize(deserializer)?.as_str() {
+        "#deployer" => Method::Deployer,
+        "#fallback" => Method::Fallback,
+        signature => {
+            let signature = if signature.ends_with(')') {
+                signature.to_string()
+            } else {
+                format!("{signature}()")
+            };
+            match Function::parse(&signature) {
+                Ok(function) => Method::Function(function.selector().0),
+                Err(error) => {
+                    return Err(serde::de::Error::custom(format!(
+                        "parsing function signature '{signature}' error: {error}"
+                    )));
+                }
+            }
+        }
+    })
 }
 
 impl Input {
@@ -85,32 +118,24 @@ impl Input {
         deployed_abis: &HashMap<String, JsonAbi>,
         deployed_contracts: &HashMap<String, Address>,
     ) -> anyhow::Result<Bytes> {
-        let Method::FunctionName(ref function_name) = self.method else {
+        let Method::Function(selector) = self.method else {
             return Ok(Bytes::default()); // fallback or deployer — no input
         };
 
-        let Some(abi) = deployed_abis.get(&self.instance) else {
+        let abi = deployed_abis
-            tracing::error!(
+            .get(&self.instance)
-                contract_name = self.instance,
+            .ok_or_else(|| anyhow::anyhow!("ABI for instance '{}' not found", &self.instance))?;
-                available_abis = ?deployed_abis.keys().collect::<Vec<_>>(),
-                "Attempted to lookup ABI of contract but it wasn't found"
-            );
-            anyhow::bail!("ABI for instance '{}' not found", &self.instance);
-        };
 
         tracing::trace!("ABI found for instance: {}", &self.instance);
 
-        // We follow the same logic that's implemented in the matter-labs-tester where they resolve
+        // Find function by selector
-        // the function name into a function selector and they assume that he function doesn't have
-        // any existing overloads.
-        // https://github.com/matter-labs/era-compiler-tester/blob/1dfa7d07cba0734ca97e24704f12dd57f6990c2c/compiler_tester/src/test/case/input/mod.rs#L158-L190
         let function = abi
             .functions()
-            .find(|function| function.name.starts_with(function_name))
+            .find(|f| f.selector().0 == selector)
             .ok_or_else(|| {
                 anyhow::anyhow!(
-                    "Function with name {:?} not found in ABI for the instance {:?}",
+                    "Function with selector {:?} not found in ABI for the instance {:?}",
-                    function_name,
+                    selector,
                     &self.instance
                 )
             })?;
@@ -135,45 +160,90 @@ impl Input {
             &self.instance
         );
 
-        // Allocating a vector that we will be using for the calldata. The vector size will be:
+        let mut encoded = selector.to_vec();
-        // 4 bytes for the function selector.
-        // function.inputs.len() * 32 bytes for the arguments (each argument is a U256).
-        //
-        // We're using indices in the following code in order to avoid the need for us to allocate
-        // a new buffer for each one of the resolved arguments.
-        let mut calldata = Vec::<u8>::with_capacity(4 + calldata_args.len() * 32);
-        calldata.extend(function.selector().0);
 
-        for (arg_idx, arg) in calldata_args.iter().enumerate() {
+        for (i, param) in function.inputs.iter().enumerate() {
-            match resolve_argument(arg, deployed_contracts) {
+            let arg = calldata_args.get(i).unwrap();
-                Ok(resolved) => {
+            let encoded_arg = match arg {
-                    calldata.extend(resolved.to_be_bytes::<32>());
+                CalldataArg::Literal(value) => match param.ty.as_str() {
-                }
+                    "uint256" | "uint" => {
-                Err(error) => {
+                        let val: U256 = value.parse()?;
-                    tracing::error!(arg, arg_idx, ?error, "Failed to resolve argument");
+                        val.abi_encode()
-                    return Err(error);
+                    }
+                    "uint24" => {
+                        let val: u32 = value.parse()?;
+                        (val & 0xFFFFFF).abi_encode()
+                    }
+                    "bool" => {
+                        let val: bool = value.parse()?;
+                        val.abi_encode()
+                    }
+                    "address" => {
+                        let addr: Address = value.parse()?;
+                        addr.abi_encode()
+                    }
+                    "string" => value.abi_encode(),
+                    "bytes32" => {
+                        let val = hex::decode(value.trim_start_matches("0x"))?;
+                        let mut fixed = [0u8; 32];
+                        fixed[..val.len()].copy_from_slice(&val);
+                        fixed.abi_encode()
+                    }
+                    "uint256[]" | "uint[]" => {
+                        let nums: Vec<u64> = serde_json::from_str(value)?;
+                        nums.abi_encode()
+                    }
+                    "bytes" => {
+                        let val = hex::decode(value.trim_start_matches("0x"))?;
+                        val.abi_encode()
+                    }
+                    _ => anyhow::bail!("Unsupported type: {}", param.ty),
+                },
+                CalldataArg::AddressRef(name) => {
+                    let contract_name = name.trim_end_matches(".address");
+                    let addr = deployed_contracts
+                        .get(contract_name)
+                        .copied()
+                        .ok_or_else(|| {
+                            anyhow::anyhow!("Address for '{}' not found", contract_name)
+                        })?;
+                    addr.abi_encode()
                 }
             };
+
+            encoded.extend(encoded_arg);
         }
 
-        Ok(calldata.into())
+        Ok(Bytes::from(encoded))
     }
 
     /// Parse this input into a legacy transaction.
     pub fn legacy_transaction(
         &self,
+        chain_id: u64,
         nonce: u64,
         deployed_contracts: &HashMap<String, Address>,
         deployed_abis: &HashMap<String, JsonAbi>,
     ) -> anyhow::Result<TransactionRequest> {
+        let to = match self.method {
+            Method::Deployer => Some(TxKind::Create),
+            _ => Some(TxKind::Call(
+                self.instance_to_address(&self.instance, deployed_contracts)?,
+            )),
+        };
+
         let input_data = self.encoded_input(deployed_abis, deployed_contracts)?;
-        let transaction_request = TransactionRequest::default().nonce(nonce);
+
-        match self.method {
+        Ok(TransactionRequest {
-            Method::Deployer => Ok(transaction_request.with_deploy_code(input_data)),
+            from: Some(self.caller),
-            _ => Ok(transaction_request
+            to,
-                .to(self.instance_to_address(&self.instance, deployed_contracts)?)
+            nonce: Some(nonce),
-                .input(input_data.into())),
+            chain_id: Some(chain_id),
-        }
+            gas_price: Some(5_000_000),
+            gas: Some(5_000_000),
+            input: TransactionInput::new(input_data),
+            ..Default::default()
+        })
     }
 }
 
@@ -185,72 +255,12 @@ fn default_caller() -> Address {
     "90F8bf6A479f320ead074411a4B0e7944Ea8c9C1".parse().unwrap()
 }
 
-/// This function takes in the string calldata argument provided in the JSON input and resolves it
-/// into a [`U256`] which is later used to construct the calldata.
-///
-/// # Note
-///
-/// This piece of code is taken from the matter-labs-tester repository which is licensed under MIT
-/// or Apache. The original source code can be found here:
-/// https://github.com/matter-labs/era-compiler-tester/blob/0ed598a27f6eceee7008deab3ff2311075a2ec69/compiler_tester/src/test/case/input/value.rs#L43-L146
-fn resolve_argument(
-    value: &str,
-    deployed_contracts: &HashMap<String, Address>,
-) -> anyhow::Result<U256> {
-    if let Some(instance) = value.strip_suffix(".address") {
-        Ok(U256::from_be_slice(
-            deployed_contracts
-                .get(instance)
-                .ok_or_else(|| anyhow::anyhow!("Instance `{}` not found", instance))?
-                .as_ref(),
-        ))
-    } else if let Some(value) = value.strip_prefix('-') {
-        let value = U256::from_str_radix(value, 10)
-            .map_err(|error| anyhow::anyhow!("Invalid decimal literal after `-`: {}", error))?;
-        if value > U256::ONE << 255u8 {
-            anyhow::bail!("Decimal literal after `-` is too big");
-        }
-        let value = value
-            .checked_sub(U256::ONE)
-            .ok_or_else(|| anyhow::anyhow!("`-0` is invalid literal"))?;
-        Ok(U256::MAX.checked_sub(value).expect("Always valid"))
-    } else if let Some(value) = value.strip_prefix("0x") {
-        Ok(U256::from_str_radix(value, 16)
-            .map_err(|error| anyhow::anyhow!("Invalid hexadecimal literal: {}", error))?)
-    } else {
-        // TODO: This is a set of "variables" that we need to be able to resolve to be fully in
-        // compliance with the matter labs tester but we currently do not resolve them. We need to
-        // add logic that does their resolution in the future, perhaps through some kind of system
-        // context API that we pass down to the resolution function that allows it to make calls to
-        // the node to perform these resolutions.
-        let is_unsupported = [
-            "$CHAIN_ID",
-            "$GAS_LIMIT",
-            "$COINBASE",
-            "$DIFFICULTY",
-            "$BLOCK_HASH",
-            "$BLOCK_TIMESTAMP",
-        ]
-        .iter()
-        .any(|var| value.starts_with(var));
-
-        if is_unsupported {
-            tracing::error!(value, "Unsupported variable used");
-            anyhow::bail!("Encountered {value} which is currently unsupported by the framework");
-        } else {
-            Ok(U256::from_str_radix(value, 10)
-                .map_err(|error| anyhow::anyhow!("Invalid decimal literal: {}", error))?)
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
 
     use super::*;
     use alloy::json_abi::JsonAbi;
-    use alloy_primitives::address;
+    use alloy_primitives::{address, keccak256};
-    use alloy_sol_types::SolValue;
     use std::collections::HashMap;
 
     #[test]
@@ -268,18 +278,16 @@ mod tests {
         "#;
 
         let parsed_abi: JsonAbi = serde_json::from_str(raw_metadata).unwrap();
-        let selector = parsed_abi
+        let selector = keccak256("store(uint256)".as_bytes())[0..4]
-            .function("store")
+            .try_into()
-            .unwrap()
+            .unwrap();
-            .first()
-            .unwrap()
-            .selector()
-            .0;
 
         let input = Input {
             instance: "Contract".to_string(),
-            method: Method::FunctionName("store".to_owned()),
+            method: Method::Function(selector),
-            calldata: Some(Calldata::Compound(vec!["42".into()])),
+            calldata: Some(Calldata::Compound(vec![CalldataArg::Literal(
+                "42".to_string(),
+            )])),
             ..Default::default()
         };
 
@@ -297,6 +305,112 @@ mod tests {
         assert_eq!(decoded.0, 42);
     }
 
+    #[test]
+    fn test_encoded_input_bool() {
+        let raw_abi = r#"[
+            {
+                "inputs": [{"name": "flag", "type": "bool"}],
+                "name": "toggle",
+                "outputs": [],
+                "stateMutability": "nonpayable",
+                "type": "function"
+            }
+        ]"#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
+        let selector = keccak256("toggle(bool)".as_bytes())[0..4]
+            .try_into()
+            .unwrap();
+
+        let input = Input {
+            instance: "Contract".to_string(),
+            method: Method::Function(selector),
+            calldata: Some(Calldata::Compound(vec![CalldataArg::Literal(
+                "true".to_string(),
+            )])),
+            ..Default::default()
+        };
+
+        let mut abis = HashMap::new();
+        abis.insert("Contract".to_string(), parsed_abi);
+        let contracts = HashMap::new();
+
+        let encoded = input.encoded_input(&abis, &contracts).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+
+        type T = (bool,);
+        let decoded: T = T::abi_decode(&encoded.0[4..]).unwrap();
+        assert_eq!(decoded.0, true);
+    }
+
+    #[test]
+    fn test_encoded_input_string() {
+        let raw_abi = r#"[
+            {
+                "inputs": [{"name": "msg", "type": "string"}],
+                "name": "echo",
+                "outputs": [],
+                "stateMutability": "nonpayable",
+                "type": "function"
+            }
+        ]"#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
+        let selector = keccak256("echo(string)".as_bytes())[0..4]
+            .try_into()
+            .unwrap();
+
+        let input = Input {
+            instance: "Contract".to_string(),
+            method: Method::Function(selector),
+            calldata: Some(Calldata::Compound(vec![CalldataArg::Literal(
+                "hello".to_string(),
+            )])),
+            ..Default::default()
+        };
+
+        let mut abis = HashMap::new();
+        abis.insert("Contract".to_string(), parsed_abi);
+        let contracts = HashMap::new();
+
+        let encoded = input.encoded_input(&abis, &contracts).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+    }
+
+    #[test]
+    fn test_encoded_input_uint256_array() {
+        let raw_abi = r#"[
+        {
+            "inputs": [{"name": "arr", "type": "uint256[]"}],
+            "name": "sum",
+            "outputs": [],
+            "stateMutability": "nonpayable",
+            "type": "function"
+        }
+        ]"#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
+        let selector = keccak256("sum(uint256[])".as_bytes())[0..4]
+            .try_into()
+            .unwrap();
+
+        let input = Input {
+            instance: "Contract".to_string(),
+            method: Method::Function(selector),
+            calldata: Some(Calldata::Compound(vec![CalldataArg::Literal(
+                "[1,2,3]".to_string(),
+            )])),
+            ..Default::default()
+        };
+
+        let mut abis = HashMap::new();
+        abis.insert("Contract".to_string(), parsed_abi);
+        let contracts = HashMap::new();
+
+        let encoded = input.encoded_input(&abis, &contracts).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+    }
+
     #[test]
     fn test_encoded_input_address() {
         let raw_abi = r#"[
@@ -310,20 +424,16 @@ mod tests {
         ]"#;
 
         let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
-        let selector = parsed_abi
+        let selector = keccak256("send(address)".as_bytes())[0..4]
-            .function("send")
+            .try_into()
-            .unwrap()
+            .unwrap();
-            .first()
-            .unwrap()
-            .selector()
-            .0;
 
-        let input: Input = Input {
+        let input = Input {
             instance: "Contract".to_string(),
-            method: Method::FunctionName("send".to_owned()),
+            method: Method::Function(selector),
-            calldata: Some(Calldata::Compound(vec![
+            calldata: Some(Calldata::Compound(vec![CalldataArg::Literal(
                 "0x1000000000000000000000000000000000000001".to_string(),
-            ])),
+            )])),
             ..Default::default()
         };
 

crates/node-interaction/Cargo.toml

@@ -11,7 +11,6 @@ rust-version.workspace = true
 [dependencies]
 alloy = { workspace = true }
 anyhow = { workspace = true }
-futures = { workspace = true }
 tracing = { workspace = true }
 once_cell = { workspace = true }
 tokio = { workspace = true }

crates/node-interaction/src/blocking_executor.rs

@@ -1,221 +0,0 @@
-//! The alloy crate __requires__ a tokio runtime.
-//! We contain any async rust right here.
-
-use std::{any::Any, panic::AssertUnwindSafe, pin::Pin, thread};
-
-use futures::FutureExt;
-use once_cell::sync::Lazy;
-use tokio::{
-    runtime::Builder,
-    sync::{mpsc::UnboundedSender, oneshot},
-};
-
-/// A blocking async executor.
-///
-/// This struct exposes the abstraction of a blocking async executor. It is a global and static
-/// executor which means that it doesn't require for new instances of it to be created, it's a
-/// singleton and can be accessed by any thread that wants to perform some async computation on the
-/// blocking executor thread.
-///
-/// The API of the blocking executor is created in a way so that it's very natural, simple to use,
-/// and unbounded to specific tasks or return types. The following is an example of using this
-/// executor to drive an async computation:
-///
-/// ```rust
-/// use revive_dt_node_interaction::*;
-///
-/// fn blocking_function() {
-///     let result = BlockingExecutor::execute(async move {
-///         tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-///         0xFFu8
-///     })
-///     .expect("Computation failed");
-///
-///     assert_eq!(result, 0xFF);
-/// }
-/// ```
-///
-/// Users get to pass in their async tasks without needing to worry about putting them in a [`Box`],
-/// [`Pin`], needing to perform down-casting, or the internal channel mechanism used by the runtime.
-/// To the user, it just looks like a function that converts some async code into sync code.
-///
-/// This struct also handled panics that occur in the passed futures and converts them into errors
-/// that can be handled by the user. This is done to allow the executor to be robust.
-///
-/// Internally, the executor communicates with the tokio runtime thread through channels which carry
-/// the [`TaskMessage`] and the results of the execution.
-pub struct BlockingExecutor;
-
-impl BlockingExecutor {
-    pub fn execute<R>(future: impl Future<Output = R> + Send + 'static) -> Result<R, anyhow::Error>
-    where
-        R: Send + 'static,
-    {
-        // Note: The blocking executor is a singleton and therefore we store its state in a static
-        // so that it's assigned only once. Additionally, when we set the state of the executor we
-        // spawn the thread where the async runtime runs.
-        static STATE: Lazy<ExecutorState> = Lazy::new(|| {
-            tracing::trace!("Initializing the BlockingExecutor state");
-
-            // All communication with the tokio runtime thread happens over mspc channels where the
-            // producers here are the threads that want to run async tasks and the consumer here is
-            // the tokio runtime thread.
-            let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel::<TaskMessage>();
-
-            thread::spawn(move || {
-                let runtime = Builder::new_current_thread()
-                    .enable_all()
-                    .build()
-                    .expect("Failed to create the async runtime");
-
-                runtime.block_on(async move {
-                    while let Some(TaskMessage {
-                        future: task,
-                        response_tx: response_channel,
-                    }) = rx.recv().await
-                    {
-                        tracing::trace!("Received a new future to execute");
-                        tokio::spawn(async move {
-                            // One of the things that the blocking executor does is that it allows
-                            // us to catch panics if they occur. By wrapping the given future in an
-                            // AssertUnwindSafe::catch_unwind we are able to catch all panic unwinds
-                            // in the given future and convert them into errors.
-                            let task = AssertUnwindSafe(task).catch_unwind();
-
-                            let result = task.await;
-                            let _ = response_channel.send(result);
-                        });
-                    }
-                })
-            });
-
-            ExecutorState { tx }
-        });
-
-        // We need to perform blocking synchronous communication between the current thread and the
-        // tokio runtime thread with the result of the async computation and the oneshot channels
-        // from tokio allows us to do that. The sender side of the channel will be given to the
-        // tokio runtime thread to send the result when the computation is completed and the receive
-        // side of the channel will be kept with this thread to await for the response of the async
-        // task to come back.
-        let (response_tx, response_rx) =
-            oneshot::channel::<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>();
-
-        // The tokio runtime thread expects a Future<Output = Box<dyn Any + Send>> + Send to be
-        // sent to it to execute. However, this function has a typed Future<Output = R> + Send and
-        // therefore we need to change the type of the future to fit what the runtime thread expects
-        // in the task message. In doing this conversion, we lose some of the type information since
-        // we're converting R => dyn Any. However, we will perform down-casting on the result to
-        // convert it back into R.
-        let future = Box::pin(async move { Box::new(future.await) as Box<dyn Any + Send> });
-
-        let task = TaskMessage::new(future, response_tx);
-        if let Err(error) = STATE.tx.send(task) {
-            tracing::error!(?error, "Failed to send the task to the blocking executor");
-            anyhow::bail!("Failed to send the task to the blocking executor: {error:?}")
-        }
-
-        let result = match response_rx.blocking_recv() {
-            Ok(result) => result,
-            Err(error) => {
-                tracing::error!(
-                    ?error,
-                    "Failed to get the response from the blocking executor"
-                );
-                anyhow::bail!("Failed to get the response from the blocking executor: {error:?}")
-            }
-        };
-
-        match result.map(|result| {
-            *result
-                .downcast::<R>()
-                .expect("Type mismatch in the downcast")
-        }) {
-            Ok(result) => Ok(result),
-            Err(error) => {
-                tracing::error!(
-                    ?error,
-                    "Failed to downcast the returned result into the expected type"
-                );
-                anyhow::bail!(
-                    "Failed to downcast the returned result into the expected type: {error:?}"
-                )
-            }
-        }
-    }
-}
-
-/// Represents the state of the async runtime. This runtime is designed to be a singleton runtime
-/// which means that in the current running program there's just a single thread that has an async
-/// runtime.
-struct ExecutorState {
-    /// The sending side of the task messages channel. This is used by all of the other threads to
-    /// communicate with the async runtime thread.
-    tx: UnboundedSender<TaskMessage>,
-}
-
-/// Represents a message that contains an asynchronous task that's to be executed by the runtime
-/// as well as a way for the runtime to report back on the result of the execution.
-struct TaskMessage {
-    /// The task that's being requested to run. This is a future that returns an object that does
-    /// implement [`Any`] and [`Send`] to allow it to be sent between the requesting thread and the
-    /// async thread.
-    future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
-
-    /// A one shot sender channel where the sender of the task is expecting to hear back on the
-    /// result of the task.
-    response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
-}
-
-impl TaskMessage {
-    pub fn new(
-        future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
-        response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
-    ) -> Self {
-        Self {
-            future,
-            response_tx,
-        }
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[test]
-    fn simple_future_works() {
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-            0xFFu8
-        })
-        .unwrap();
-
-        // Assert
-        assert_eq!(result, 0xFFu8);
-    }
-
-    #[test]
-    #[allow(unreachable_code, clippy::unreachable)]
-    fn panics_in_futures_are_caught() {
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            panic!("This is a panic!");
-            0xFFu8
-        });
-
-        // Assert
-        assert!(result.is_err());
-
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-            0xFFu8
-        })
-        .unwrap();
-
-        // Assert
-        assert_eq!(result, 0xFFu8)
-    }
-}

crates/node-interaction/src/lib.rs

@@ -3,9 +3,12 @@
 use alloy::primitives::Address;
 use alloy::rpc::types::trace::geth::{DiffMode, GethTrace};
 use alloy::rpc::types::{TransactionReceipt, TransactionRequest};
+use tokio_runtime::TO_TOKIO;
 
-mod blocking_executor;
+pub mod nonce;
-pub use blocking_executor::*;
+mod tokio_runtime;
+pub mod trace;
+pub mod transaction;
 
 /// An interface for all interactions with Ethereum compatible nodes.
 pub trait EthereumNode {

crates/node-interaction/src/nonce.rs

@@ -0,0 +1,55 @@
+use std::pin::Pin;
+
+use alloy::{
+    primitives::Address,
+    providers::{Provider, ProviderBuilder},
+};
+use tokio::sync::oneshot;
+
+use crate::{TO_TOKIO, tokio_runtime::AsyncNodeInteraction};
+
+pub type Task = Pin<Box<dyn Future<Output = anyhow::Result<u64>> + Send>>;
+
+pub(crate) struct Nonce {
+    sender: oneshot::Sender<anyhow::Result<u64>>,
+    task: Task,
+}
+
+impl AsyncNodeInteraction for Nonce {
+    type Output = anyhow::Result<u64>;
+
+    fn split(
+        self,
+    ) -> (
+        std::pin::Pin<Box<dyn Future<Output = Self::Output> + Send>>,
+        oneshot::Sender<Self::Output>,
+    ) {
+        (self.task, self.sender)
+    }
+}
+
+/// This is like `trace_transaction`, just for nonces.
+pub fn fetch_onchain_nonce(
+    connection: String,
+    wallet: alloy::network::EthereumWallet,
+    address: Address,
+) -> anyhow::Result<u64> {
+    let sender = TO_TOKIO.lock().unwrap().nonce_sender.clone();
+
+    let (tx, rx) = oneshot::channel();
+    let task: Task = Box::pin(async move {
+        let provider = ProviderBuilder::new()
+            .wallet(wallet)
+            .connect(&connection)
+            .await?;
+        let onchain = provider.get_transaction_count(address).await?;
+        Ok(onchain)
+    });
+
+    sender
+        .blocking_send(Nonce { task, sender: tx })
+        .expect("not in async context");
+
+    rx.blocking_recv()
+        .unwrap_or_else(|err| anyhow::bail!("nonce fetch failed: {err}"))
+}

crates/node-interaction/src/tokio_runtime.rs

@@ -0,0 +1,87 @@
+//! The alloy crate __requires__ a tokio runtime.
+//! We contain any async rust right here.
+
+use once_cell::sync::Lazy;
+use std::pin::Pin;
+use std::sync::Mutex;
+use std::thread;
+use tokio::runtime::Runtime;
+use tokio::spawn;
+use tokio::sync::{mpsc, oneshot};
+use tokio::task::JoinError;
+
+use crate::nonce::Nonce;
+use crate::trace::Trace;
+use crate::transaction::Transaction;
+
+pub(crate) static TO_TOKIO: Lazy<Mutex<TokioRuntime>> =
+    Lazy::new(|| Mutex::new(TokioRuntime::spawn()));
+
+/// Common interface for executing async node interactions from a non-async context.
+#[allow(clippy::type_complexity)]
+pub(crate) trait AsyncNodeInteraction: Send + 'static {
+    type Output: Send;
+
+    //// Returns the task and the output sender.
+    fn split(
+        self,
+    ) -> (
+        Pin<Box<dyn Future<Output = Self::Output> + Send>>,
+        oneshot::Sender<Self::Output>,
+    );
+}
+
+pub(crate) struct TokioRuntime {
+    pub(crate) transaction_sender: mpsc::Sender<Transaction>,
+    pub(crate) trace_sender: mpsc::Sender<Trace>,
+    pub(crate) nonce_sender: mpsc::Sender<Nonce>,
+}
+
+impl TokioRuntime {
+    fn spawn() -> Self {
+        let rt = Runtime::new().expect("should be able to create the tokio runtime");
+        let (transaction_sender, transaction_receiver) = mpsc::channel::<Transaction>(1024);
+        let (trace_sender, trace_receiver) = mpsc::channel::<Trace>(1024);
+        let (nonce_sender, nonce_receiver) = mpsc::channel::<Nonce>(1024);
+
+        thread::spawn(move || {
+            rt.block_on(async move {
+                let transaction_task = spawn(interaction::<Transaction>(transaction_receiver));
+                let trace_task = spawn(interaction::<Trace>(trace_receiver));
+                let nonce_task = spawn(interaction::<Nonce>(nonce_receiver));
+
+                if let Err(error) = transaction_task.await {
+                    tracing::error!("tokio transaction task failed: {error}");
+                }
+                if let Err(error) = trace_task.await {
+                    tracing::error!("tokio trace transaction task failed: {error}");
+                }
+                if let Err(error) = nonce_task.await {
+                    tracing::error!("tokio nonce task failed: {error}");
+                }
+            });
+        });
+
+        Self {
+            transaction_sender,
+            trace_sender,
+            nonce_sender,
+        }
+    }
+}
+
+async fn interaction<T>(mut receiver: mpsc::Receiver<T>) -> Result<(), JoinError>
+where
+    T: AsyncNodeInteraction,
+{
+    while let Some(task) = receiver.recv().await {
+        spawn(async move {
+            let (task, sender) = task.split();
+            sender
+                .send(task.await)
+                .unwrap_or_else(|_| panic!("failed to send task output"));
+        });
+    }
+
+    Ok(())
+}

crates/node-interaction/src/trace.rs

@@ -0,0 +1,43 @@
+//! Trace transactions in a sync context.
+
+use std::pin::Pin;
+
+use alloy::rpc::types::trace::geth::GethTrace;
+use tokio::sync::oneshot;
+
+use crate::TO_TOKIO;
+use crate::tokio_runtime::AsyncNodeInteraction;
+
+pub type Task = Pin<Box<dyn Future<Output = anyhow::Result<GethTrace>> + Send>>;
+
+pub(crate) struct Trace {
+    sender: oneshot::Sender<anyhow::Result<GethTrace>>,
+    task: Task,
+}
+
+impl AsyncNodeInteraction for Trace {
+    type Output = anyhow::Result<GethTrace>;
+
+    fn split(
+        self,
+    ) -> (
+        std::pin::Pin<Box<dyn Future<Output = Self::Output> + Send>>,
+        oneshot::Sender<Self::Output>,
+    ) {
+        (self.task, self.sender)
+    }
+}
+
+/// Execute some [Task] that return a [GethTrace] result.
+pub fn trace_transaction(task: Task) -> anyhow::Result<GethTrace> {
+    let task_sender = TO_TOKIO.lock().unwrap().trace_sender.clone();
+    let (sender, receiver) = oneshot::channel();
+
+    task_sender
+        .blocking_send(Trace { task, sender })
+        .expect("we are not calling this from an async context");
+
+    receiver
+        .blocking_recv()
+        .unwrap_or_else(|error| anyhow::bail!("no trace received: {error}"))
+}

crates/node-interaction/src/transaction.rs

@@ -0,0 +1,46 @@
+//! Execute transactions in a sync context.
+
+use std::pin::Pin;
+
+use alloy::rpc::types::TransactionReceipt;
+use tokio::sync::oneshot;
+
+use crate::TO_TOKIO;
+use crate::tokio_runtime::AsyncNodeInteraction;
+
+pub type Task = Pin<Box<dyn Future<Output = anyhow::Result<TransactionReceipt>> + Send>>;
+
+pub(crate) struct Transaction {
+    receipt_sender: oneshot::Sender<anyhow::Result<TransactionReceipt>>,
+    task: Task,
+}
+
+impl AsyncNodeInteraction for Transaction {
+    type Output = anyhow::Result<TransactionReceipt>;
+
+    fn split(
+        self,
+    ) -> (
+        Pin<Box<dyn Future<Output = Self::Output> + Send>>,
+        oneshot::Sender<Self::Output>,
+    ) {
+        (self.task, self.receipt_sender)
+    }
+}
+
+/// Execute some [Task] that returns a [TransactionReceipt].
+pub fn execute_transaction(task: Task) -> anyhow::Result<TransactionReceipt> {
+    let request_sender = TO_TOKIO.lock().unwrap().transaction_sender.clone();
+    let (receipt_sender, receipt_receiver) = oneshot::channel();
+
+    request_sender
+        .blocking_send(Transaction {
+            receipt_sender,
+            task,
+        })
+        .expect("we are not calling this from an async context");
+
+    receipt_receiver
+        .blocking_recv()
+        .unwrap_or_else(|error| anyhow::bail!("no receipt received: {error}"))
+}

crates/node/src/geth.rs

@@ -2,7 +2,7 @@
 
 use std::{
     collections::HashMap,
-    fs::{File, OpenOptions, create_dir_all, remove_dir_all},
+    fs::{File, create_dir_all, remove_dir_all},
     io::{BufRead, BufReader, Read, Write},
     path::PathBuf,
     process::{Child, Command, Stdio},
@@ -10,6 +10,7 @@ use std::{
         Mutex,
         atomic::{AtomicU32, Ordering},
     },
+    thread,
     time::{Duration, Instant},
 };
 
@@ -23,8 +24,10 @@ use alloy::{
     },
 };
 use revive_dt_config::Arguments;
-use revive_dt_node_interaction::{BlockingExecutor, EthereumNode};
+use revive_dt_node_interaction::{
-use tracing::Level;
+    EthereumNode, nonce::fetch_onchain_nonce, trace::trace_transaction,
+    transaction::execute_transaction,
+};
 
 use crate::Node;
 
@@ -42,7 +45,6 @@ pub struct Instance {
     connection_string: String,
     base_directory: PathBuf,
     data_directory: PathBuf,
-    logs_directory: PathBuf,
     geth: PathBuf,
     id: u32,
     handle: Option<Child>,
@@ -50,17 +52,11 @@ pub struct Instance {
     start_timeout: u64,
     wallet: EthereumWallet,
     nonces: Mutex<HashMap<Address, u64>>,
-    /// This vector stores [`File`] objects that we use for logging which we want to flush when the
-    /// node object is dropped. We do not store them in a structured fashion at the moment (in
-    /// separate fields) as the logic that we need to apply to them is all the same regardless of
-    /// what it belongs to, we just want to flush them on [`Drop`] of the node.
-    logs_file_to_flush: Vec<File>,
 }
 
 impl Instance {
     const BASE_DIRECTORY: &str = "geth";
     const DATA_DIRECTORY: &str = "data";
-    const LOGS_DIRECTORY: &str = "logs";
 
     const IPC_FILE: &str = "geth.ipc";
     const GENESIS_JSON_FILE: &str = "genesis.json";
@@ -68,14 +64,9 @@ impl Instance {
     const READY_MARKER: &str = "IPC endpoint opened";
     const ERROR_MARKER: &str = "Fatal:";
 
-    const GETH_STDOUT_LOG_FILE_NAME: &str = "node_stdout.log";
-    const GETH_STDERR_LOG_FILE_NAME: &str = "node_stderr.log";
-
     /// Create the node directory and call `geth init` to configure the genesis.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn init(&mut self, genesis: String) -> anyhow::Result<&mut Self> {
         create_dir_all(&self.base_directory)?;
-        create_dir_all(&self.logs_directory)?;
 
         let genesis_path = self.base_directory.join(Self::GENESIS_JSON_FILE);
         File::create(&genesis_path)?.write_all(genesis.as_bytes())?;
@@ -105,24 +96,8 @@ impl Instance {
 
     /// Spawn the go-ethereum node child process.
     ///
-    /// [Instance::init] must be called prior.
+    /// [Instance::init] must be called priorly.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn spawn_process(&mut self) -> anyhow::Result<&mut Self> {
-        // This is the `OpenOptions` that we wish to use for all of the log files that we will be
-        // opening in this method. We need to construct it in this way to:
-        // 1. Be consistent
-        // 2. Less verbose and more dry
-        // 3. Because the builder pattern uses mutable references so we need to get around that.
-        let open_options = {
-            let mut options = OpenOptions::new();
-            options.create(true).truncate(true).write(true);
-            options
-        };
-
-        let stdout_logs_file = open_options
-            .clone()
-            .open(self.geth_stdout_log_file_path())?;
-        let stderr_logs_file = open_options.open(self.geth_stderr_log_file_path())?;
         self.handle = Command::new(&self.geth)
             .arg("--dev")
             .arg("--datadir")
@@ -134,67 +109,49 @@ impl Instance {
             .arg("--nodiscover")
             .arg("--maxpeers")
             .arg("0")
-            .stderr(stderr_logs_file.try_clone()?)
+            .stderr(Stdio::piped())
-            .stdout(stdout_logs_file.try_clone()?)
+            .stdout(Stdio::null())
             .spawn()?
             .into();
-
-        if let Err(error) = self.wait_ready() {
-            tracing::error!(?error, "Failed to start geth, shutting down gracefully");
-            self.shutdown()?;
-            return Err(error);
-        }
-
-        self.logs_file_to_flush
-            .extend([stderr_logs_file, stdout_logs_file]);
-
         Ok(self)
     }
 
     /// Wait for the g-ethereum node child process getting ready.
     ///
     /// [Instance::spawn_process] must be called priorly.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn wait_ready(&mut self) -> anyhow::Result<&mut Self> {
+        // Thanks clippy but geth is a server; we don't `wait` but eventually kill it.
+        #[allow(clippy::zombie_processes)]
+        let mut child = self.handle.take().expect("should be spawned");
         let start_time = Instant::now();
-
-        let logs_file = OpenOptions::new()
-            .read(true)
-            .write(false)
-            .append(false)
-            .truncate(false)
-            .open(self.geth_stderr_log_file_path())?;
-
         let maximum_wait_time = Duration::from_millis(self.start_timeout);
-        let mut stderr = BufReader::new(logs_file).lines();
+        let mut stderr = BufReader::new(child.stderr.take().expect("should be piped")).lines();
-        loop {
+        let error = loop {
-            if let Some(Ok(line)) = stderr.next() {
+            let Some(Ok(line)) = stderr.next() else {
-                if line.contains(Self::ERROR_MARKER) {
+                break "child process stderr reading error".to_string();
-                    anyhow::bail!("Failed to start geth {line}");
+            };
-                }
+            if line.contains(Self::ERROR_MARKER) {
-                if line.contains(Self::READY_MARKER) {
+                break line;
-                    return Ok(self);
+            }
-                }
+            if line.contains(Self::READY_MARKER) {
+                // Keep stderr alive
+                // https://github.com/alloy-rs/alloy/issues/2091#issuecomment-2676134147
+                thread::spawn(move || for _ in stderr.by_ref() {});
+
+                self.handle = child.into();
+                return Ok(self);
             }
             if Instant::now().duration_since(start_time) > maximum_wait_time {
-                anyhow::bail!("Timeout in starting geth");
+                break "spawn timeout".to_string();
             }
-        }
+        };
-    }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id), level = Level::TRACE)]
+        let _ = child.kill();
-    fn geth_stdout_log_file_path(&self) -> PathBuf {
+        anyhow::bail!("geth node #{} spawn error: {error}", self.id)
-        self.logs_directory.join(Self::GETH_STDOUT_LOG_FILE_NAME)
-    }
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id), level = Level::TRACE)]
-    fn geth_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::GETH_STDERR_LOG_FILE_NAME)
     }
 }
 
 impl EthereumNode for Instance {
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn execute_transaction(
         &self,
         transaction: TransactionRequest,
@@ -202,7 +159,7 @@ impl EthereumNode for Instance {
         let connection_string = self.connection_string();
         let wallet = self.wallet.clone();
 
-        BlockingExecutor::execute(async move {
+        execute_transaction(Box::pin(async move {
             let outer_span = tracing::debug_span!("Submitting transaction", ?transaction,);
             let _outer_guard = outer_span.enter();
 
@@ -281,10 +238,9 @@ impl EthereumNode for Instance {
                     }
                 }
             }
-        })?
+        }))
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn trace_transaction(
         &self,
         transaction: TransactionReceipt,
@@ -297,17 +253,16 @@ impl EthereumNode for Instance {
         });
         let wallet = self.wallet.clone();
 
-        BlockingExecutor::execute(async move {
+        trace_transaction(Box::pin(async move {
             Ok(ProviderBuilder::new()
                 .wallet(wallet)
                 .connect(&connection_string)
                 .await?
                 .debug_trace_transaction(transaction.transaction_hash, trace_options)
                 .await?)
-        })?
+        }))
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn state_diff(
         &self,
         transaction: alloy::rpc::types::TransactionReceipt,
@@ -321,20 +276,11 @@ impl EthereumNode for Instance {
         }
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn fetch_add_nonce(&self, address: Address) -> anyhow::Result<u64> {
         let connection_string = self.connection_string.clone();
         let wallet = self.wallet.clone();
 
-        let onchain_nonce = BlockingExecutor::execute::<anyhow::Result<_>>(async move {
+        let onchain_nonce = fetch_onchain_nonce(connection_string, wallet, address)?;
-            ProviderBuilder::new()
-                .wallet(wallet)
-                .connect(&connection_string)
-                .await?
-                .get_transaction_count(address)
-                .await
-                .map_err(Into::into)
-        })??;
 
         let mut nonces = self.nonces.lock().unwrap();
         let current = nonces.entry(address).or_insert(onchain_nonce);
@@ -353,7 +299,6 @@ impl Node for Instance {
         Self {
             connection_string: base_directory.join(Self::IPC_FILE).display().to_string(),
             data_directory: base_directory.join(Self::DATA_DIRECTORY),
-            logs_directory: base_directory.join(Self::LOGS_DIRECTORY),
             base_directory,
             geth: config.geth.clone(),
             id,
@@ -362,46 +307,22 @@ impl Node for Instance {
             start_timeout: config.geth_start_timeout,
             wallet: config.wallet(),
             nonces: Mutex::new(HashMap::new()),
-            // We know that we only need to be storing 2 files so we can specify that when creating
-            // the vector. It's the stdout and stderr of the geth node.
-            logs_file_to_flush: Vec::with_capacity(2),
         }
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn connection_string(&self) -> String {
         self.connection_string.clone()
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn shutdown(self) -> anyhow::Result<()> {
-    fn shutdown(&mut self) -> anyhow::Result<()> {
-        // Terminate the processes in a graceful manner to allow for the output to be flushed.
-        if let Some(mut child) = self.handle.take() {
-            child
-                .kill()
-                .map_err(|error| anyhow::anyhow!("Failed to kill the geth process: {error:?}"))?;
-        }
-
-        // Flushing the files that we're using for keeping the logs before shutdown.
-        for file in self.logs_file_to_flush.iter_mut() {
-            file.flush()?
-        }
-
-        // Remove the node's database so that subsequent runs do not run on the same database. We
-        // ignore the error just in case the directory didn't exist in the first place and therefore
-        // there's nothing to be deleted.
-        let _ = remove_dir_all(self.base_directory.join(Self::DATA_DIRECTORY));
-
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn spawn(&mut self, genesis: String) -> anyhow::Result<()> {
-        self.init(genesis)?.spawn_process()?;
+        self.init(genesis)?.spawn_process()?.wait_ready()?;
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.geth)
             .arg("--version")
@@ -416,9 +337,14 @@ impl Node for Instance {
 }
 
 impl Drop for Instance {
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
     fn drop(&mut self) {
-        self.shutdown().expect("Failed to shutdown")
+        tracing::info!(id = self.id, "Dropping node");
+        if let Some(child) = self.handle.as_mut() {
+            let _ = child.kill();
+        }
+        if self.base_directory.exists() {
+            let _ = remove_dir_all(&self.base_directory);
+        }
     }
 }
 

crates/node/src/kitchensink.rs

@@ -1,8 +1,8 @@
 use std::{
     collections::HashMap,
-    fs::{File, OpenOptions, create_dir_all, remove_dir_all},
+    fs::create_dir_all,
-    io::{BufRead, Write},
+    io::BufRead,
-    path::{Path, PathBuf},
+    path::PathBuf,
     process::{Child, Command, Stdio},
     sync::{
         Mutex,
@@ -24,10 +24,12 @@ use alloy::{
 use serde_json::{Value as JsonValue, json};
 use sp_core::crypto::Ss58Codec;
 use sp_runtime::AccountId32;
-use tracing::Level;
 
 use revive_dt_config::Arguments;
-use revive_dt_node_interaction::{BlockingExecutor, EthereumNode};
+use revive_dt_node_interaction::{
+    EthereumNode, nonce::fetch_onchain_nonce, trace::trace_transaction,
+    transaction::execute_transaction,
+};
 
 use crate::Node;
 
@@ -41,22 +43,13 @@ pub struct KitchensinkNode {
     rpc_url: String,
     wallet: EthereumWallet,
     base_directory: PathBuf,
-    logs_directory: PathBuf,
     process_substrate: Option<Child>,
     process_proxy: Option<Child>,
     nonces: Mutex<HashMap<Address, u64>>,
-    /// This vector stores [`File`] objects that we use for logging which we want to flush when the
-    /// node object is dropped. We do not store them in a structured fashion at the moment (in
-    /// separate fields) as the logic that we need to apply to them is all the same regardless of
-    /// what it belongs to, we just want to flush them on [`Drop`] of the node.
-    logs_file_to_flush: Vec<File>,
 }
 
 impl KitchensinkNode {
     const BASE_DIRECTORY: &str = "kitchensink";
-    const LOGS_DIRECTORY: &str = "logs";
-    const DATA_DIRECTORY: &str = "chains";
-
     const SUBSTRATE_READY_MARKER: &str = "Running JSON-RPC server";
     const ETH_PROXY_READY_MARKER: &str = "Running JSON-RPC server";
     const CHAIN_SPEC_JSON_FILE: &str = "template_chainspec.json";
@@ -66,21 +59,11 @@ impl KitchensinkNode {
     const SUBSTRATE_LOG_ENV: &str = "error,evm=debug,sc_rpc_server=info,runtime::revive=debug";
     const PROXY_LOG_ENV: &str = "info,eth-rpc=debug";
 
-    const KITCHENSINK_STDOUT_LOG_FILE_NAME: &str = "node_stdout.log";
-    const KITCHENSINK_STDERR_LOG_FILE_NAME: &str = "node_stderr.log";
-
-    const PROXY_STDOUT_LOG_FILE_NAME: &str = "proxy_stdout.log";
-    const PROXY_STDERR_LOG_FILE_NAME: &str = "proxy_stderr.log";
-
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn init(&mut self, genesis: &str) -> anyhow::Result<&mut Self> {
         create_dir_all(&self.base_directory)?;
-        create_dir_all(&self.logs_directory)?;
 
         let template_chainspec_path = self.base_directory.join(Self::CHAIN_SPEC_JSON_FILE);
 
-        // Note: we do not pipe the logs of this process to a separate file since this is just a
-        // once-off export of the default chain spec and not part of the long-running node process.
         let output = Command::new(&self.substrate_binary)
             .arg("export-chain-spec")
             .arg("--chain")
@@ -129,7 +112,6 @@ impl KitchensinkNode {
         Ok(self)
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn spawn_process(&mut self) -> anyhow::Result<()> {
         let substrate_rpc_port = Self::BASE_SUBSTRATE_RPC_PORT + self.id as u16;
         let proxy_rpc_port = Self::BASE_PROXY_RPC_PORT + self.id as u16;
@@ -138,25 +120,8 @@ impl KitchensinkNode {
 
         let chainspec_path = self.base_directory.join(Self::CHAIN_SPEC_JSON_FILE);
 
-        // This is the `OpenOptions` that we wish to use for all of the log files that we will be
-        // opening in this method. We need to construct it in this way to:
-        // 1. Be consistent
-        // 2. Less verbose and more dry
-        // 3. Because the builder pattern uses mutable references so we need to get around that.
-        let open_options = {
-            let mut options = OpenOptions::new();
-            options.create(true).truncate(true).write(true);
-            options
-        };
-
         // Start Substrate node
-        let kitchensink_stdout_logs_file = open_options
+        let mut substrate_process = Command::new(&self.substrate_binary)
-            .clone()
-            .open(self.kitchensink_stdout_log_file_path())?;
-        let kitchensink_stderr_logs_file = open_options
-            .clone()
-            .open(self.kitchensink_stderr_log_file_path())?;
-        self.process_substrate = Command::new(&self.substrate_binary)
             .arg("--chain")
             .arg(chainspec_path)
             .arg("--base-path")
@@ -171,61 +136,40 @@ impl KitchensinkNode {
             .arg("--rpc-cors")
             .arg("all")
             .env("RUST_LOG", Self::SUBSTRATE_LOG_ENV)
-            .stdout(kitchensink_stdout_logs_file.try_clone()?)
+            .stdout(Stdio::null())
-            .stderr(kitchensink_stderr_logs_file.try_clone()?)
+            .stderr(Stdio::piped())
-            .spawn()?
+            .spawn()?;
-            .into();
 
         // Give the node a moment to boot
-        if let Err(error) = Self::wait_ready(
+        Self::wait_ready(
-            self.kitchensink_stderr_log_file_path().as_path(),
+            &mut substrate_process,
             Self::SUBSTRATE_READY_MARKER,
             Duration::from_secs(30),
-        ) {
+        )?;
-            tracing::error!(
-                ?error,
-                "Failed to start substrate, shutting down gracefully"
-            );
-            self.shutdown()?;
-            return Err(error);
-        };
 
-        let eth_proxy_stdout_logs_file = open_options
+        let mut proxy_process = Command::new(&self.eth_proxy_binary)
-            .clone()
-            .open(self.proxy_stdout_log_file_path())?;
-        let eth_proxy_stderr_logs_file = open_options.open(self.proxy_stderr_log_file_path())?;
-        self.process_proxy = Command::new(&self.eth_proxy_binary)
             .arg("--dev")
             .arg("--rpc-port")
             .arg(proxy_rpc_port.to_string())
             .arg("--node-rpc-url")
             .arg(format!("ws://127.0.0.1:{substrate_rpc_port}"))
             .env("RUST_LOG", Self::PROXY_LOG_ENV)
-            .stdout(eth_proxy_stdout_logs_file.try_clone()?)
+            .stdout(Stdio::null())
-            .stderr(eth_proxy_stderr_logs_file.try_clone()?)
+            .stderr(Stdio::piped())
-            .spawn()?
+            .spawn()?;
-            .into();
 
-        if let Err(error) = Self::wait_ready(
+        Self::wait_ready(
-            self.proxy_stderr_log_file_path().as_path(),
+            &mut proxy_process,
             Self::ETH_PROXY_READY_MARKER,
             Duration::from_secs(30),
-        ) {
+        )?;
-            tracing::error!(?error, "Failed to start proxy, shutting down gracefully");
-            self.shutdown()?;
-            return Err(error);
-        };
 
-        self.logs_file_to_flush.extend([
+        self.process_substrate = Some(substrate_process);
-            kitchensink_stdout_logs_file,
+        self.process_proxy = Some(proxy_process);
-            kitchensink_stderr_logs_file,
-            eth_proxy_stdout_logs_file,
-            eth_proxy_stderr_logs_file,
-        ]);
 
         Ok(())
     }
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+
     fn extract_balance_from_genesis_file(
         &self,
         genesis_str: &str,
@@ -266,30 +210,27 @@ impl KitchensinkNode {
         Ok(account_id.to_ss58check())
     }
 
-    fn wait_ready(logs_file_path: &Path, marker: &str, timeout: Duration) -> anyhow::Result<()> {
+    fn wait_ready(child: &mut Child, marker: &str, timeout: Duration) -> anyhow::Result<()> {
         let start_time = std::time::Instant::now();
-        let logs_file = OpenOptions::new()
+        let stderr = child.stderr.take().expect("stderr must be piped");
-            .read(true)
-            .write(false)
-            .append(false)
-            .truncate(false)
-            .open(logs_file_path)?;
 
-        let mut lines = std::io::BufReader::new(logs_file).lines();
+        let mut lines = std::io::BufReader::new(stderr).lines();
         loop {
             if let Some(Ok(line)) = lines.next() {
+                println!("Kitchensink log: {line:?}");
                 if line.contains(marker) {
+                    std::thread::spawn(move || for _ in lines.by_ref() {});
                     return Ok(());
                 }
             }
 
             if start_time.elapsed() > timeout {
+                let _ = child.kill();
                 anyhow::bail!("Timeout waiting for process readiness: {marker}");
             }
         }
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     pub fn eth_rpc_version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.eth_proxy_binary)
             .arg("--version")
@@ -301,32 +242,9 @@ impl KitchensinkNode {
             .stdout;
         Ok(String::from_utf8_lossy(&output).trim().to_string())
     }
-
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), level = Level::TRACE)]
-    fn kitchensink_stdout_log_file_path(&self) -> PathBuf {
-        self.logs_directory
-            .join(Self::KITCHENSINK_STDOUT_LOG_FILE_NAME)
-    }
-
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), level = Level::TRACE)]
-    fn kitchensink_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory
-            .join(Self::KITCHENSINK_STDERR_LOG_FILE_NAME)
-    }
-
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), level = Level::TRACE)]
-    fn proxy_stdout_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::PROXY_STDOUT_LOG_FILE_NAME)
-    }
-
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), level = Level::TRACE)]
-    fn proxy_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::PROXY_STDERR_LOG_FILE_NAME)
-    }
 }
 
 impl EthereumNode for KitchensinkNode {
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn execute_transaction(
         &self,
         transaction: alloy::rpc::types::TransactionRequest,
@@ -337,7 +255,7 @@ impl EthereumNode for KitchensinkNode {
         tracing::debug!("Submitting transaction: {transaction:#?}");
 
         tracing::info!("Submitting tx to kitchensink");
-        let receipt = BlockingExecutor::execute(async move {
+        let receipt = execute_transaction(Box::pin(async move {
             Ok(ProviderBuilder::new()
                 .wallet(wallet)
                 .connect(&url)
@@ -346,12 +264,11 @@ impl EthereumNode for KitchensinkNode {
                 .await?
                 .get_receipt()
                 .await?)
-        })?;
+        }));
         tracing::info!(?receipt, "Submitted tx to kitchensink");
         receipt
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn trace_transaction(
         &self,
         transaction: TransactionReceipt,
@@ -365,17 +282,16 @@ impl EthereumNode for KitchensinkNode {
 
         let wallet = self.wallet.clone();
 
-        BlockingExecutor::execute(async move {
+        trace_transaction(Box::pin(async move {
             Ok(ProviderBuilder::new()
                 .wallet(wallet)
                 .connect(&url)
                 .await?
                 .debug_trace_transaction(transaction.transaction_hash, trace_options)
                 .await?)
-        })?
+        }))
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn state_diff(&self, transaction: TransactionReceipt) -> anyhow::Result<DiffMode> {
         match self
             .trace_transaction(transaction)?
@@ -386,20 +302,11 @@ impl EthereumNode for KitchensinkNode {
         }
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn fetch_add_nonce(&self, address: Address) -> anyhow::Result<u64> {
         let url = self.rpc_url.clone();
         let wallet = self.wallet.clone();
 
-        let onchain_nonce = BlockingExecutor::execute::<anyhow::Result<_>>(async move {
+        let onchain_nonce = fetch_onchain_nonce(url, wallet, address)?;
-            ProviderBuilder::new()
-                .wallet(wallet)
-                .connect(&url)
-                .await?
-                .get_transaction_count(address)
-                .await
-                .map_err(Into::into)
-        })??;
 
         let mut nonces = self.nonces.lock().unwrap();
         let current = nonces.entry(address).or_insert(onchain_nonce);
@@ -414,7 +321,6 @@ impl Node for KitchensinkNode {
         let kitchensink_directory = config.directory().join(Self::BASE_DIRECTORY);
         let id = NODE_COUNT.fetch_add(1, Ordering::SeqCst);
         let base_directory = kitchensink_directory.join(id.to_string());
-        let logs_directory = base_directory.join(Self::LOGS_DIRECTORY);
 
         Self {
             id,
@@ -423,54 +329,30 @@ impl Node for KitchensinkNode {
             rpc_url: String::new(),
             wallet: config.wallet(),
             base_directory,
-            logs_directory,
             process_substrate: None,
             process_proxy: None,
             nonces: Mutex::new(HashMap::new()),
-            // We know that we only need to be storing 4 files so we can specify that when creating
-            // the vector. It's the stdout and stderr of the substrate-node and the eth-rpc.
-            logs_file_to_flush: Vec::with_capacity(4),
         }
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn connection_string(&self) -> String {
         self.rpc_url.clone()
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    fn shutdown(mut self) -> anyhow::Result<()> {
-    fn shutdown(&mut self) -> anyhow::Result<()> {
-        // Terminate the processes in a graceful manner to allow for the output to be flushed.
         if let Some(mut child) = self.process_proxy.take() {
-            child
+            let _ = child.kill();
-                .kill()
-                .map_err(|error| anyhow::anyhow!("Failed to kill the proxy process: {error:?}"))?;
         }
         if let Some(mut child) = self.process_substrate.take() {
-            child.kill().map_err(|error| {
+            let _ = child.kill();
-                anyhow::anyhow!("Failed to kill the substrate process: {error:?}")
-            })?;
         }
-
-        // Flushing the files that we're using for keeping the logs before shutdown.
-        for file in self.logs_file_to_flush.iter_mut() {
-            file.flush()?
-        }
-
-        // Remove the node's database so that subsequent runs do not run on the same database. We
-        // ignore the error just in case the directory didn't exist in the first place and therefore
-        // there's nothing to be deleted.
-        let _ = remove_dir_all(self.base_directory.join(Self::DATA_DIRECTORY));
-
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn spawn(&mut self, genesis: String) -> anyhow::Result<()> {
         self.init(&genesis)?.spawn_process()
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.substrate_binary)
             .arg("--version")
@@ -485,9 +367,13 @@ impl Node for KitchensinkNode {
 }
 
 impl Drop for KitchensinkNode {
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn drop(&mut self) {
-        self.shutdown().expect("Failed to shutdown")
+        if let Some(mut child) = self.process_proxy.take() {
+            let _ = child.kill();
+        }
+        if let Some(mut child) = self.process_substrate.take() {
+            let _ = child.kill();
+        }
     }
 }
 

crates/node/src/lib.rs

@@ -23,7 +23,7 @@ pub trait Node: EthereumNode {
     /// Prune the node instance and related data.
     ///
     /// Blocking until it's completely stopped.
-    fn shutdown(&mut self) -> anyhow::Result<()>;
+    fn shutdown(self) -> anyhow::Result<()>;
 
     /// Returns the nodes connection string.
     fn connection_string(&self) -> String;