Fix tests

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

@@ -44,8 +44,6 @@ 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.
@@ -85,8 +83,8 @@ where
 pub struct Compiler<T: SolidityCompiler> {
     input: SolcStandardJsonInput,
     extra_options: T::Options,
-    allow_paths: Vec<PathBuf>,
-    base_path: Option<PathBuf>,
+    allow_paths: Vec<String>,
+    base_path: Option<String>,
 }
 
 impl Default for Compiler<solc::Solc> {
@@ -147,12 +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
     }
@@ -161,8 +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

@@ -23,27 +23,13 @@ impl SolidityCompiler for Resolc {
         &self,
         input: CompilerInput<Self::Options>,
     ) -> anyhow::Result<CompilerOutput<Self::Options>> {
-        let mut command = Command::new(&self.resolc_path);
-        command
+        let mut child = Command::new(&self.resolc_path)
+            .arg("--standard-json")
+            .args(&input.extra_options)
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
-            .arg("--standard-json");
-
-        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()?;
+            .spawn()?;
 
         let stdin_pipe = child.stdin.as_mut().expect("stdin must be piped");
         serde_json::to_writer(stdin_pipe, &input.input)?;
@@ -69,22 +55,13 @@ impl SolidityCompiler for Resolc {
             });
         }
 
-        let parsed = serde_json::from_slice::<SolcStandardJsonOutput>(&stdout).map_err(|e| {
+        let parsed: SolcStandardJsonOutput = serde_json::from_slice(&stdout).map_err(|e| {
             anyhow::anyhow!(
                 "failed to parse resolc JSON output: {e}\nstderr: {}",
                 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}")
-            }
-        }
-
         Ok(CompilerOutput {
             input,
             output: parsed,

crates/compiler/src/solc.rs

@@ -9,7 +9,6 @@ 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;
 
 pub struct Solc {
     solc_path: PathBuf,
@@ -22,27 +21,12 @@ impl SolidityCompiler for Solc {
         &self,
         input: CompilerInput<Self::Options>,
     ) -> anyhow::Result<CompilerOutput<Self::Options>> {
-        let mut command = Command::new(&self.solc_path);
-        command
+        let mut child = Command::new(&self.solc_path)
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
-            .arg("--standard-json");
-
-        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()?;
+            .arg("--standard-json")
+            .spawn()?;
 
         let stdin = child.stdin.as_mut().expect("should be piped");
         serde_json::to_writer(stdin, &input.input)?;
@@ -58,26 +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}")
-            }
-        }
-
         Ok(CompilerOutput {
             input,
-            output: parsed,
+            output: serde_json::from_slice(&output.stdout)?,
             error: None,
         })
     }

crates/core/src/driver/mod.rs

@@ -69,13 +69,14 @@ where
             anyhow::bail!("unsupported solc version: {:?}", &mode.solc_version);
         };
 
-        let compiler = Compiler::<T::Compiler>::new()
-            .allow_path(metadata.directory()?)
+        let mut compiler = Compiler::<T::Compiler>::new()
+            .base_path(metadata.directory()?.display().to_string())
             .solc_optimizer(mode.solc_optimize());
 
-        let compiler = FilesWithExtensionIterator::new(metadata.directory()?)
-            .with_allowed_extension("sol")
-            .try_fold(compiler, |compiler, path| compiler.with_source(&path))?;
+        for (file, _contract) in metadata.contract_sources()?.values() {
+            tracing::debug!("contract source {}", file.display());
+            compiler = compiler.with_source(file)?;
+        }
 
         let mut task = CompilationTask {
             json_input: compiler.input(),
@@ -179,15 +180,12 @@ where
     }
 
     pub fn deploy_contracts(&mut self, input: &Input, node: &T::Blockchain) -> anyhow::Result<()> {
-        let tracing_span = tracing::debug_span!(
-            "Deploying contracts",
-            ?input,
-            node = std::any::type_name::<T>()
+        tracing::debug!(
+            "Deploying contracts {}, having address {} on node: {}",
+            &input.instance,
+            &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!(
@@ -219,17 +217,7 @@ where
                         continue;
                     };
 
-                    let nonce = match node.fetch_add_nonce(input.caller) {
-                        Ok(nonce) => nonce,
-                        Err(error) => {
-                            tracing::error!(
-                                caller = ?input.caller,
-                                ?error,
-                                "Failed to get the nonce for the caller"
-                            );
-                            return Err(error);
-                        }
-                    };
+                    let nonce = node.fetch_add_nonce(input.caller)?;
 
                     tracing::debug!(
                         "Calculated nonce {}, for contract {}, having address {} on node: {}",
@@ -242,17 +230,7 @@ where
                     // We are using alloy for building and submitting the transactions and it will
                     // automatically fill in all of the missing fields from the provider that we
                     // are using.
-                    let code = match alloy::hex::decode(&code) {
-                        Ok(code) => code,
-                        Err(error) => {
-                            tracing::error!(
-                                code,
-                                ?error,
-                                "Failed to hex-decode the code of the contract. (This could possibly mean that it contains '_' and therefore it requires linking to be performed)"
-                            );
-                            return Err(error.into());
-                        }
-                    };
+                    let code = alloy::hex::decode(&code)?;
                     let tx = TransactionRequest::default()
                         .nonce(nonce)
                         .from(input.caller)
@@ -498,77 +476,3 @@ 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

@@ -89,14 +89,9 @@ impl Input {
             return Ok(Bytes::default()); // fallback or deployer — no input
         };
 
-        let Some(abi) = deployed_abis.get(&self.instance) else {
-            tracing::error!(
-                contract_name = 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);
-        };
+        let abi = deployed_abis
+            .get(&self.instance)
+            .ok_or_else(|| anyhow::anyhow!("ABI for instance '{}' not found", &self.instance))?;
 
         tracing::trace!("ABI found for instance: {}", &self.instance);
 

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 use blocking_executor::*;
+pub mod nonce;
+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

@@ -23,7 +23,10 @@ use alloy::{
     },
 };
 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 tracing::Level;
 
 use crate::Node;
@@ -202,7 +205,7 @@ 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();
 
@@ -281,7 +284,7 @@ impl EthereumNode for Instance {
                     }
                 }
             }
-        })?
+        }))
     }
 
     #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
@@ -297,14 +300,14 @@ 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))]
@@ -326,15 +329,7 @@ impl EthereumNode for Instance {
         let connection_string = self.connection_string.clone();
         let wallet = self.wallet.clone();
 
-        let onchain_nonce = BlockingExecutor::execute::<anyhow::Result<_>>(async move {
-            ProviderBuilder::new()
-                .wallet(wallet)
-                .connect(&connection_string)
-                .await?
-                .get_transaction_count(address)
-                .await
-                .map_err(Into::into)
-        })??;
+        let onchain_nonce = fetch_onchain_nonce(connection_string, wallet, address)?;
 
         let mut nonces = self.nonces.lock().unwrap();
         let current = nonces.entry(address).or_insert(onchain_nonce);

crates/node/src/kitchensink.rs

@@ -27,7 +27,10 @@ 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;
 
@@ -337,7 +340,7 @@ 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)
@@ -346,7 +349,7 @@ impl EthereumNode for KitchensinkNode {
                 .await?
                 .get_receipt()
                 .await?)
-        })?;
+        }));
         tracing::info!(?receipt, "Submitted tx to kitchensink");
         receipt
     }
@@ -365,14 +368,14 @@ 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))]
@@ -391,15 +394,7 @@ impl EthereumNode for KitchensinkNode {
         let url = self.rpc_url.clone();
         let wallet = self.wallet.clone();
 
-        let onchain_nonce = BlockingExecutor::execute::<anyhow::Result<_>>(async move {
-            ProviderBuilder::new()
-                .wallet(wallet)
-                .connect(&url)
-                .await?
-                .get_transaction_count(address)
-                .await
-                .map_err(Into::into)
-        })??;
+        let onchain_nonce = fetch_onchain_nonce(url, wallet, address)?;
 
         let mut nonces = self.nonces.lock().unwrap();
         let current = nonces.entry(address).or_insert(onchain_nonce);