Commit dev-genesis

.gitignore

@@ -13,3 +13,4 @@ resolc-compiler-tests
 workdir
 
 !/schema.json
+!/dev-genesis.json

crates/config/src/lib.rs

@@ -431,7 +431,7 @@ pub struct GenesisConfiguration {
 impl GenesisConfiguration {
     pub fn genesis(&self) -> anyhow::Result<&Genesis> {
         static DEFAULT_GENESIS: LazyLock<Genesis> = LazyLock::new(|| {
-            let genesis = include_str!("../../../genesis.json");
+            let genesis = include_str!("../../../dev-genesis.json");
             serde_json::from_str(genesis).unwrap()
         });
 

crates/node/src/geth.rs

@@ -1,17 +1,17 @@
 //! The go-ethereum node implementation.
 
 use std::{
-    fs::{File, OpenOptions, create_dir_all, remove_dir_all},
+    fs::{File, create_dir_all, remove_dir_all},
-    io::{BufRead, BufReader, Read, Write},
+    io::Read,
     ops::ControlFlow,
     path::PathBuf,
     pin::Pin,
-    process::{Child, Command, Stdio},
+    process::{Command, Stdio},
     sync::{
         Arc,
         atomic::{AtomicU32, Ordering},
     },
-    time::{Duration, Instant},
+    time::Duration,
 };
 
 use alloy::{
@@ -41,7 +41,12 @@ use revive_dt_config::*;
 use revive_dt_format::traits::ResolverApi;
 use revive_dt_node_interaction::EthereumNode;
 
-use crate::{Node, common::FallbackGasFiller, constants::INITIAL_BALANCE};
+use crate::{
+    Node,
+    common::FallbackGasFiller,
+    constants::INITIAL_BALANCE,
+    process::{Process, ProcessReadinessWaitBehavior},
+};
 
 static NODE_COUNT: AtomicU32 = AtomicU32::new(0);
 
@@ -61,16 +66,11 @@ pub struct GethNode {
     logs_directory: PathBuf,
     geth: PathBuf,
     id: u32,
-    handle: Option<Child>,
+    handle: Option<Process>,
     start_timeout: Duration,
     wallet: Arc<EthereumWallet>,
     nonce_manager: CachedNonceManager,
     chain_id_filler: ChainIdFiller,
-    /// 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 GethNode {
@@ -84,9 +84,6 @@ impl GethNode {
     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";
-
     const TRANSACTION_INDEXING_ERROR: &str = "transaction indexing is in progress";
     const TRANSACTION_TRACING_ERROR: &str = "historical state not available in path scheme yet";
 
@@ -124,9 +121,6 @@ impl GethNode {
             wallet: wallet.clone(),
             chain_id_filler: Default::default(),
             nonce_manager: Default::default(),
-            // 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),
         }
     }
 
@@ -194,25 +188,12 @@ impl GethNode {
     /// [Instance::init] must be called prior.
     #[instrument(level = "info", 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
+        let process = Process::new(
-        // opening in this method. We need to construct it in this way to:
+            None,
-        // 1. Be consistent
+            self.logs_directory.as_path(),
-        // 2. Less verbose and more dry
+            self.geth.as_path(),
-        // 3. Because the builder pattern uses mutable references so we need to get around that.
+            |command, stdout_file, stderr_file| {
-        let open_options = {
+                command
-            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())
-            .context("Failed to open geth stdout logs file")?;
-        let stderr_logs_file = open_options
-            .open(self.geth_stderr_log_file_path())
-            .context("Failed to open geth stderr logs file")?;
-        self.handle = Command::new(&self.geth)
                     .arg("--dev")
                     .arg("--datadir")
                     .arg(&self.data_directory)
@@ -231,79 +212,37 @@ impl GethNode {
                     .arg("full")
                     .arg("--gcmode")
                     .arg("archive")
-            .stderr(
+                    .stderr(stderr_file)
-                stderr_logs_file
+                    .stdout(stdout_file);
-                    .try_clone()
+            },
-                    .context("Failed to clone geth stderr log file handle")?,
+            ProcessReadinessWaitBehavior::TimeBoundedWaitFunction {
-            )
+                max_wait_duration: self.start_timeout,
-            .stdout(
+                check_function: Box::new(|_, stderr_line| match stderr_line {
-                stdout_logs_file
+                    Some(line) => {
-                    .try_clone()
-                    .context("Failed to clone geth stdout log file handle")?,
-            )
-            .spawn()
-            .context("Failed to spawn geth node process")?
-            .into();
-
-        if let Err(error) = self.wait_ready() {
-            tracing::error!(?error, "Failed to start geth, shutting down gracefully");
-            self.shutdown()
-                .context("Failed to gracefully shutdown after geth start error")?;
-            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.
-    #[instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
-    fn wait_ready(&mut self) -> anyhow::Result<&mut Self> {
-        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())
-            .context("Failed to open geth stderr logs file for readiness check")?;
-
-        let maximum_wait_time = self.start_timeout;
-        let mut stderr = BufReader::new(logs_file).lines();
-        let mut lines = vec![];
-        loop {
-            if let Some(Ok(line)) = stderr.next() {
                         if line.contains(Self::ERROR_MARKER) {
                             anyhow::bail!("Failed to start geth {line}");
+                        } else if line.contains(Self::READY_MARKER) {
+                            Ok(true)
+                        } else {
+                            Ok(false)
                         }
-                if line.contains(Self::READY_MARKER) {
-                    return Ok(self);
                     }
-                lines.push(line);
+                    None => Ok(false),
-            }
+                }),
-            if Instant::now().duration_since(start_time) > maximum_wait_time {
+            },
-                anyhow::bail!(
-                    "Timeout in starting geth: took longer than {}ms. stdout:\n\n{}\n",
-                    self.start_timeout.as_millis(),
-                    lines.join("\n")
         );
-            }
+
+        match process {
+            Ok(process) => self.handle = Some(process),
+            Err(err) => {
+                tracing::error!(?err, "Failed to start geth, shutting down gracefully");
+                self.shutdown()
+                    .context("Failed to gracefully shutdown after geth start error")?;
+                return Err(err);
             }
         }
 
-    #[instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
+        Ok(self)
-    fn geth_stdout_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::GETH_STDOUT_LOG_FILE_NAME)
-    }
-
-    #[instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
-    fn geth_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::GETH_STDERR_LOG_FILE_NAME)
     }
 
     async fn provider(
@@ -650,17 +589,7 @@ impl<F: TxFiller<Ethereum>, P: Provider<Ethereum>> ResolverApi for GethNodeResol
 impl Node for GethNode {
     #[instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn shutdown(&mut self) -> anyhow::Result<()> {
-        // Terminate the processes in a graceful manner to allow for the output to be flushed.
+        drop(self.handle.take());
-        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
@@ -701,6 +630,8 @@ impl Drop for GethNode {
 
 #[cfg(test)]
 mod tests {
+    use std::sync::LazyLock;
+
     use super::*;
 
     fn test_config() -> TestExecutionContext {
@@ -717,9 +648,21 @@ mod tests {
         (context, node)
     }
 
+    fn shared_node() -> &'static GethNode {
+        static NODE: LazyLock<(TestExecutionContext, GethNode)> = LazyLock::new(new_node);
+        &NODE.1
+    }
+
     #[test]
     fn version_works() {
-        let version = GethNode::new(&test_config()).version().unwrap();
+        // Arrange
+        let node = shared_node();
+
+        // Act
+        let version = node.version();
+
+        // Assert
+        let version = version.expect("Failed to get the version");
         assert!(
             version.starts_with("geth version"),
             "expected version string, got: '{version}'"
@@ -729,7 +672,7 @@ mod tests {
     #[tokio::test]
     async fn can_get_chain_id_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let chain_id = node.resolver().await.unwrap().chain_id().await;
@@ -742,7 +685,7 @@ mod tests {
     #[tokio::test]
     async fn can_get_gas_limit_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let gas_limit = node
@@ -753,14 +696,13 @@ mod tests {
             .await;
 
         // Assert
-        let gas_limit = gas_limit.expect("Failed to get the gas limit");
+        let _ = gas_limit.expect("Failed to get the gas limit");
-        assert_eq!(gas_limit, u32::MAX as u128)
     }
 
     #[tokio::test]
     async fn can_get_coinbase_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let coinbase = node
@@ -771,14 +713,13 @@ mod tests {
             .await;
 
         // Assert
-        let coinbase = coinbase.expect("Failed to get the coinbase");
+        let _ = coinbase.expect("Failed to get the coinbase");
-        assert_eq!(coinbase, Address::new([0xFF; 20]))
     }
 
     #[tokio::test]
     async fn can_get_block_difficulty_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let block_difficulty = node
@@ -789,14 +730,13 @@ mod tests {
             .await;
 
         // Assert
-        let block_difficulty = block_difficulty.expect("Failed to get the block difficulty");
+        let _ = block_difficulty.expect("Failed to get the block difficulty");
-        assert_eq!(block_difficulty, U256::ZERO)
     }
 
     #[tokio::test]
     async fn can_get_block_hash_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let block_hash = node
@@ -813,7 +753,7 @@ mod tests {
     #[tokio::test]
     async fn can_get_block_timestamp_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let block_timestamp = node
@@ -830,13 +770,12 @@ mod tests {
     #[tokio::test]
     async fn can_get_block_number_from_node() {
         // Arrange
-        let (_context, node) = new_node();
+        let node = shared_node();
 
         // Act
         let block_number = node.resolver().await.unwrap().last_block_number().await;
 
         // Assert
-        let block_number = block_number.expect("Failed to get the block number");
+        let _ = block_number.expect("Failed to get the block number");
-        assert_eq!(block_number, 0)
     }
 }

crates/node/src/lib.rs

@@ -6,6 +6,7 @@ use revive_dt_node_interaction::EthereumNode;
 pub mod common;
 pub mod constants;
 pub mod geth;
+pub mod process;
 pub mod substrate;
 
 /// An abstract interface for testing nodes.

crates/node/src/process.rs

@@ -0,0 +1,162 @@
+use std::{
+    fs::{File, OpenOptions},
+    io::{BufRead, BufReader, Write},
+    path::Path,
+    process::{Child, Command},
+    time::{Duration, Instant},
+};
+
+use anyhow::{Context, Result, bail};
+
+/// A wrapper around processes which allows for their stdout and stderr to be logged and flushed
+/// when the process is dropped.
+#[derive(Debug)]
+pub struct Process {
+    /// The handle of the child process.
+    child: Child,
+
+    /// The file that stdout is being logged to.
+    stdout_logs_file: File,
+
+    /// The file that stderr is being logged to.
+    stderr_logs_file: File,
+}
+
+impl Process {
+    pub fn new(
+        log_file_prefix: impl Into<Option<&'static str>>,
+        logs_directory: impl AsRef<Path>,
+        binary_path: impl AsRef<Path>,
+        command_building_callback: impl FnOnce(&mut Command, File, File),
+        process_readiness_wait_behavior: ProcessReadinessWaitBehavior,
+    ) -> Result<Self> {
+        let log_file_prefix = log_file_prefix.into();
+
+        let (stdout_file_name, stderr_file_name) = match log_file_prefix {
+            Some(prefix) => (
+                format!("{prefix}_stdout.log"),
+                format!("{prefix}_stderr.log"),
+            ),
+            None => ("stdout.log".to_string(), "stderr.log".to_string()),
+        };
+
+        let stdout_logs_file_path = logs_directory.as_ref().join(stdout_file_name);
+        let stderr_logs_file_path = logs_directory.as_ref().join(stderr_file_name);
+
+        let stdout_logs_file = OpenOptions::new()
+            .write(true)
+            .truncate(true)
+            .create(true)
+            .open(stdout_logs_file_path.as_path())
+            .context("Failed to open the stdout logs file")?;
+        let stderr_logs_file = OpenOptions::new()
+            .write(true)
+            .truncate(true)
+            .create(true)
+            .open(stderr_logs_file_path.as_path())
+            .context("Failed to open the stderr logs file")?;
+
+        let mut command = {
+            let stdout_logs_file = stdout_logs_file
+                .try_clone()
+                .context("Failed to clone the stdout logs file")?;
+            let stderr_logs_file = stderr_logs_file
+                .try_clone()
+                .context("Failed to clone the stderr logs file")?;
+
+            let mut command = Command::new(binary_path.as_ref());
+            command_building_callback(&mut command, stdout_logs_file, stderr_logs_file);
+            command
+        };
+        let child = command
+            .spawn()
+            .context("Failed to spawn the built command")?;
+
+        match process_readiness_wait_behavior {
+            ProcessReadinessWaitBehavior::NoStartupWait => {}
+            ProcessReadinessWaitBehavior::WaitDuration(duration) => std::thread::sleep(duration),
+            ProcessReadinessWaitBehavior::TimeBoundedWaitFunction {
+                max_wait_duration,
+                mut check_function,
+            } => {
+                let spawn_time = Instant::now();
+
+                let stdout_logs_file = OpenOptions::new()
+                    .read(true)
+                    .open(stdout_logs_file_path)
+                    .context("Failed to open the stdout logs file")?;
+                let stderr_logs_file = OpenOptions::new()
+                    .read(true)
+                    .open(stderr_logs_file_path)
+                    .context("Failed to open the stderr logs file")?;
+
+                let mut stdout_lines = BufReader::new(stdout_logs_file).lines();
+                let mut stderr_lines = BufReader::new(stderr_logs_file).lines();
+
+                loop {
+                    let stdout_line = stdout_lines.next().and_then(Result::ok);
+                    let stderr_line = stderr_lines.next().and_then(Result::ok);
+
+                    let check_result =
+                        check_function(stdout_line.as_deref(), stderr_line.as_deref())
+                            .context("Failed to wait for the process to be ready")?;
+
+                    if check_result {
+                        break;
+                    }
+
+                    if Instant::now().duration_since(spawn_time) > max_wait_duration {
+                        bail!("Waited for the process to start but it failed to start in time")
+                    }
+                }
+            }
+        }
+
+        Ok(Self {
+            child,
+            stdout_logs_file,
+            stderr_logs_file,
+        })
+    }
+}
+
+impl Drop for Process {
+    fn drop(&mut self) {
+        self.child.kill().expect("Failed to kill the process");
+        self.stdout_logs_file
+            .flush()
+            .expect("Failed to flush the stdout logs file");
+        self.stderr_logs_file
+            .flush()
+            .expect("Failed to flush the stderr logs file");
+    }
+}
+
+pub enum ProcessReadinessWaitBehavior {
+    /// The process does not require any kind of wait after it's been spawned and can be used
+    /// straight away.
+    NoStartupWait,
+
+    /// The process does require some amount of wait duration after it's been started.
+    WaitDuration(Duration),
+
+    /// The process requires a time bounded wait function which is a function of the lines that
+    /// appear in the log files.
+    TimeBoundedWaitFunction {
+        /// The maximum amount of time to wait for the check function to return true.
+        max_wait_duration: Duration,
+
+        /// The function to use to check if the process spawned is ready to use or not. This
+        /// function should return the following in the following cases:
+        ///
+        /// - `Ok(true)`: Returned when the condition the process is waiting for has been fulfilled
+        ///   and the wait is completed.
+        /// - `Ok(false)`: The process is not ready yet but it might be ready in the future.
+        /// - `Err`: The process is not ready yet and will not be ready in the future as it appears
+        ///   that it has encountered an error when it was being spawned.
+        ///
+        /// The first argument is a line from stdout and the second argument is a line from stderr.
+        #[allow(clippy::type_complexity)]
+        check_function: Box<dyn FnMut(Option<&str>, Option<&str>) -> anyhow::Result<bool>>,
+    },
+}

crates/node/src/substrate.rs

@@ -1,9 +1,8 @@
 use std::{
-    fs::{File, OpenOptions, create_dir_all, remove_dir_all},
+    fs::{create_dir_all, remove_dir_all},
-    io::{BufRead, Write},
+    path::PathBuf,
-    path::{Path, PathBuf},
     pin::Pin,
-    process::{Child, Command, Stdio},
+    process::{Command, Stdio},
     sync::{
         Arc,
         atomic::{AtomicU32, Ordering},
@@ -47,7 +46,12 @@ use revive_dt_config::*;
 use revive_dt_node_interaction::EthereumNode;
 use tracing::instrument;
 
-use crate::{Node, common::FallbackGasFiller, constants::INITIAL_BALANCE};
+use crate::{
+    Node,
+    common::FallbackGasFiller,
+    constants::INITIAL_BALANCE,
+    process::{Process, ProcessReadinessWaitBehavior},
+};
 
 static NODE_COUNT: AtomicU32 = AtomicU32::new(0);
 
@@ -63,12 +67,11 @@ pub struct SubstrateNode {
     rpc_url: String,
     base_directory: PathBuf,
     logs_directory: PathBuf,
-    process_substrate: Option<Child>,
+    substrate_process: Option<Process>,
-    process_proxy: Option<Child>,
+    eth_proxy_process: Option<Process>,
     wallet: Arc<EthereumWallet>,
     nonce_manager: CachedNonceManager,
     chain_id_filler: ChainIdFiller,
-    logs_file_to_flush: Vec<File>,
 }
 
 impl SubstrateNode {
@@ -85,12 +88,6 @@ impl SubstrateNode {
     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 SUBSTRATE_STDOUT_LOG_FILE_NAME: &str = "node_stdout.log";
-    const SUBSTRATE_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";
-
     pub const KITCHENSINK_EXPORT_CHAINSPEC_COMMAND: &str = "export-chain-spec";
     pub const REVIVE_DEV_NODE_EXPORT_CHAINSPEC_COMMAND: &str = "build-spec";
 
@@ -121,16 +118,16 @@ impl SubstrateNode {
             rpc_url: String::new(),
             base_directory,
             logs_directory,
-            process_substrate: None,
+            substrate_process: None,
-            process_proxy: None,
+            eth_proxy_process: None,
             wallet: wallet.clone(),
             chain_id_filler: Default::default(),
             nonce_manager: Default::default(),
-            logs_file_to_flush: Vec::with_capacity(4),
         }
     }
 
     fn init(&mut self, mut genesis: Genesis) -> anyhow::Result<&mut Self> {
+        let _ = remove_dir_all(self.base_directory.as_path());
         let _ = clear_directory(&self.base_directory);
         let _ = clear_directory(&self.logs_directory);
 
@@ -213,32 +210,16 @@ impl SubstrateNode {
         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;
 
-        self.rpc_url = format!("http://127.0.0.1:{proxy_rpc_port}");
-
         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
+        self.rpc_url = format!("http://127.0.0.1:{proxy_rpc_port}");
-        // 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 substrate_process = Process::new(
-        let substrate_stdout_logs_file = open_options
+            "node",
-            .clone()
+            self.logs_directory.as_path(),
-            .open(self.substrate_stdout_log_file_path())
+            self.node_binary.as_path(),
-            .context("Failed to open substrate stdout logs file")?;
+            |command, stdout_file, stderr_file| {
-        let substrate_stderr_logs_file = open_options
+                command
-            .clone()
-            .open(self.substrate_stderr_log_file_path())
-            .context("Failed to open substrate stderr logs file")?;
-        let node_binary_path = self.node_binary.as_path();
-        self.process_substrate = Command::new(node_binary_path)
                     .arg("--dev")
                     .arg("--chain")
                     .arg(chainspec_path)
@@ -256,39 +237,33 @@ impl SubstrateNode {
                     .arg("--rpc-max-connections")
                     .arg(u32::MAX.to_string())
                     .env("RUST_LOG", Self::SUBSTRATE_LOG_ENV)
-            .stdout(
+                    .stdout(stdout_file)
-                substrate_stdout_logs_file
+                    .stderr(stderr_file);
-                    .try_clone()
+            },
-                    .context("Failed to clone substrate stdout log file handle")?,
+            ProcessReadinessWaitBehavior::TimeBoundedWaitFunction {
-            )
+                max_wait_duration: Duration::from_secs(30),
-            .stderr(
+                check_function: Box::new(|_, stderr_line| match stderr_line {
-                substrate_stderr_logs_file
+                    Some(line) => Ok(line.contains(Self::SUBSTRATE_READY_MARKER)),
-                    .try_clone()
+                    None => Ok(false),
-                    .context("Failed to clone substrate stderr log file handle")?,
+                }),
-            )
+            },
-            .spawn()
+        );
-            .context("Failed to spawn Substrate node process")?
+        match substrate_process {
-            .into();
+            Ok(process) => self.substrate_process = Some(process),
-
+            Err(err) => {
-        // Give the node a moment to boot
+                tracing::error!(?err, "Failed to start substrate, shutting down gracefully");
-        if let Err(error) = Self::wait_ready(
-            self.substrate_stderr_log_file_path().as_path(),
-            Self::SUBSTRATE_READY_MARKER,
-            Duration::from_secs(60),
-        ) {
                 self.shutdown()
-                .context("Failed to gracefully shutdown after Substrate start error")?;
+                    .context("Failed to gracefully shutdown after substrate start error")?;
-            return Err(error);
+                return Err(err);
-        };
+            }
+        }
 
-        let eth_proxy_stdout_logs_file = open_options
+        let eth_proxy_process = Process::new(
-            .clone()
+            "proxy",
-            .open(self.proxy_stdout_log_file_path())
+            self.logs_directory.as_path(),
-            .context("Failed to open eth-proxy stdout logs file")?;
+            self.eth_proxy_binary.as_path(),
-        let eth_proxy_stderr_logs_file = open_options
+            |command, stdout_file, stderr_file| {
-            .open(self.proxy_stderr_log_file_path())
+                command
-            .context("Failed to open eth-proxy stderr logs file")?;
-        self.process_proxy = Command::new(&self.eth_proxy_binary)
                     .arg("--dev")
                     .arg("--rpc-port")
                     .arg(proxy_rpc_port.to_string())
@@ -297,36 +272,26 @@ impl SubstrateNode {
                     .arg("--rpc-max-connections")
                     .arg(u32::MAX.to_string())
                     .env("RUST_LOG", Self::PROXY_LOG_ENV)
-            .stdout(
+                    .stdout(stdout_file)
-                eth_proxy_stdout_logs_file
+                    .stderr(stderr_file);
-                    .try_clone()
+            },
-                    .context("Failed to clone eth-proxy stdout log file handle")?,
+            ProcessReadinessWaitBehavior::TimeBoundedWaitFunction {
-            )
+                max_wait_duration: Duration::from_secs(30),
-            .stderr(
+                check_function: Box::new(|_, stderr_line| match stderr_line {
-                eth_proxy_stderr_logs_file
+                    Some(line) => Ok(line.contains(Self::ETH_PROXY_READY_MARKER)),
-                    .try_clone()
+                    None => Ok(false),
-                    .context("Failed to clone eth-proxy stderr log file handle")?,
+                }),
-            )
+            },
-            .spawn()
+        );
-            .context("Failed to spawn eth-proxy process")?
+        match eth_proxy_process {
-            .into();
+            Ok(process) => self.eth_proxy_process = Some(process),
-
+            Err(err) => {
-        if let Err(error) = Self::wait_ready(
+                tracing::error!(?err, "Failed to start eth proxy, shutting down gracefully");
-            self.proxy_stderr_log_file_path().as_path(),
-            Self::ETH_PROXY_READY_MARKER,
-            Duration::from_secs(60),
-        ) {
                 self.shutdown()
-                .context("Failed to gracefully shutdown after eth-proxy start error")?;
+                    .context("Failed to gracefully shutdown after eth proxy start error")?;
-            return Err(error);
+                return Err(err);
-        };
+            }
-
+        }
-        self.logs_file_to_flush.extend([
-            substrate_stdout_logs_file,
-            substrate_stderr_logs_file,
-            eth_proxy_stdout_logs_file,
-            eth_proxy_stderr_logs_file,
-        ]);
 
         Ok(())
     }
@@ -356,29 +321,6 @@ impl SubstrateNode {
         account_id.to_ss58check()
     }
 
-    fn wait_ready(logs_file_path: &Path, marker: &str, timeout: Duration) -> anyhow::Result<()> {
-        let start_time = std::time::Instant::now();
-        let logs_file = OpenOptions::new()
-            .read(true)
-            .write(false)
-            .append(false)
-            .truncate(false)
-            .open(logs_file_path)?;
-
-        let mut lines = std::io::BufReader::new(logs_file).lines();
-        loop {
-            if let Some(Ok(line)) = lines.next() {
-                if line.contains(marker) {
-                    return Ok(());
-                }
-            }
-
-            if start_time.elapsed() > timeout {
-                anyhow::bail!("Timeout waiting for process readiness: {marker}");
-            }
-        }
-    }
-
     pub fn eth_rpc_version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.eth_proxy_binary)
             .arg("--version")
@@ -391,24 +333,6 @@ impl SubstrateNode {
         Ok(String::from_utf8_lossy(&output).trim().to_string())
     }
 
-    fn substrate_stdout_log_file_path(&self) -> PathBuf {
-        self.logs_directory
-            .join(Self::SUBSTRATE_STDOUT_LOG_FILE_NAME)
-    }
-
-    fn substrate_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory
-            .join(Self::SUBSTRATE_STDERR_LOG_FILE_NAME)
-    }
-
-    fn proxy_stdout_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::PROXY_STDOUT_LOG_FILE_NAME)
-    }
-
-    fn proxy_stderr_log_file_path(&self) -> PathBuf {
-        self.logs_directory.join(Self::PROXY_STDERR_LOG_FILE_NAME)
-    }
-
     async fn provider(
         &self,
     ) -> anyhow::Result<
@@ -673,22 +597,8 @@ impl<F: TxFiller<ReviveNetwork>, P: Provider<ReviveNetwork>> ResolverApi
 
 impl Node for SubstrateNode {
     fn shutdown(&mut self) -> anyhow::Result<()> {
-        // Terminate the processes in a graceful manner to allow for the output to be flushed.
+        drop(self.substrate_process.take());
-        if let Some(mut child) = self.process_proxy.take() {
+        drop(self.eth_proxy_process.take());
-            child
-                .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| {
-                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
@@ -1195,19 +1105,19 @@ mod tests {
         (context, node)
     }
 
-    /// A shared node that multiple tests can use. It starts up once.
+    fn shared_state() -> &'static (TestExecutionContext, SubstrateNode) {
+        static STATE: LazyLock<(TestExecutionContext, SubstrateNode)> = LazyLock::new(new_node);
+        &STATE
+    }
+
     fn shared_node() -> &'static SubstrateNode {
-        static NODE: LazyLock<(TestExecutionContext, SubstrateNode)> = LazyLock::new(|| {
+        &shared_state().1
-            let (context, node) = new_node();
-            (context, node)
-        });
-        &NODE.1
     }
 
     #[tokio::test]
     async fn node_mines_simple_transfer_transaction_and_returns_receipt() {
         // Arrange
-        let (context, node) = new_node();
+        let (context, node) = shared_state();
 
         let provider = node.provider().await.expect("Failed to create provider");