feat(host): Support multiple modes

.monorepo

@@ -1 +1 @@
-e52030dba4d6130874f80e80900961c342c8c074
+3cc36be2ef1ff1797fd85a30754551949b29dbc1

bin/client/justfile

@@ -49,6 +49,7 @@ run-client-asterisc block_number l1_rpc l1_beacon_rpc l2_rpc rollup_node_rpc ver
     --input $STATE_PATH \
     -- \
     $HOST_BIN_PATH \
+    single \
     --l1-head $L1_HEAD \
     --agreed-l2-head-hash $AGREED_L2_HEAD_HASH \
     --claimed-l2-output-root $CLAIMED_L2_OUTPUT_ROOT \
@@ -96,6 +97,7 @@ run-client-native block_number l1_rpc l1_beacon_rpc l2_rpc rollup_node_rpc rollu
 
   echo "Running host program with native client program..."
   cargo r --bin kona-host --release -- \
+    single \
     --l1-head $L1_HEAD \
     --agreed-l2-head-hash $AGREED_L2_HEAD_HASH \
     --claimed-l2-output-root $CLAIMED_L2_OUTPUT_ROOT \
@@ -125,6 +127,7 @@ run-client-native-offline block_number l2_claim l2_output_root l2_head l1_head l
 
   echo "Running host program with native client program..."
   cargo r --bin kona-host --release -- \
+    single \
     --l1-head $L1_HEAD \
     --agreed-l2-head-hash $AGREED_L2_HEAD_HASH \
     --claimed-l2-output-root $CLAIMED_L2_OUTPUT_ROOT \
@@ -169,6 +172,7 @@ run-client-asterisc-offline block_number l2_claim l2_output_root l2_head l1_head
     --input $STATE_PATH \
     -- \
     $HOST_BIN_PATH \
+    single \
     --l1-head $L1_HEAD \
     --agreed-l2-head-hash $AGREED_L2_HEAD_HASH \
     --claimed-l2-output-root $CLAIMED_L2_OUTPUT_ROOT \

bin/host/src/cli/mod.rs

@@ -1,26 +1,11 @@
 //! This module contains all CLI-specific code for the host binary.
 
-use crate::{
-    blobs::OnlineBlobProvider,
-    kv::{
-        DiskKeyValueStore, LocalKeyValueStore, MemoryKeyValueStore, SharedKeyValueStore,
-        SplitKeyValueStore,
-    },
-};
-use alloy_primitives::B256;
-use alloy_provider::ReqwestProvider;
-use alloy_rpc_client::RpcClient;
-use alloy_transport_http::Http;
-use anyhow::{anyhow, Result};
+use crate::single::SingleChainHostCli;
 use clap::{
     builder::styling::{AnsiColor, Color, Style},
-    ArgAction, Parser,
+    ArgAction, Parser, Subcommand,
 };
-use op_alloy_genesis::RollupConfig;
-use reqwest::Client;
 use serde::Serialize;
-use std::{path::PathBuf, sync::Arc};
-use tokio::sync::RwLock;
 
 mod parser;
 pub(crate) use parser::parse_b256;
@@ -37,164 +22,22 @@ primary thread.
 ";
 
 /// The host binary CLI application arguments.
-#[derive(Default, Parser, Serialize, Clone, Debug)]
+#[derive(Parser, Serialize, Clone, Debug)]
 #[command(about = ABOUT, version, styles = cli_styles())]
 pub struct HostCli {
     /// Verbosity level (0-2)
     #[arg(long, short, action = ArgAction::Count)]
     pub v: u8,
-    /// Hash of the L1 head block. Derivation stops after this block is processed.
-    #[clap(long, value_parser = parse_b256, env)]
-    pub l1_head: B256,
-    /// Hash of the agreed upon safe L2 block committed to by `--agreed-l2-output-root`.
-    #[clap(long, visible_alias = "l2-head", value_parser = parse_b256, env)]
-    pub agreed_l2_head_hash: B256,
-    /// Agreed safe L2 Output Root to start derivation from.
-    #[clap(long, visible_alias = "l2-output-root", value_parser = parse_b256, env)]
-    pub agreed_l2_output_root: B256,
-    /// Claimed L2 output root at block # `--claimed-l2-block-number` to validate.
-    #[clap(long, visible_alias = "l2-claim", value_parser = parse_b256, env)]
-    pub claimed_l2_output_root: B256,
-    /// Number of the L2 block that the claimed output root commits to.
-    #[clap(long, visible_alias = "l2-block-number", env)]
-    pub claimed_l2_block_number: u64,
-    /// Address of L2 JSON-RPC endpoint to use (eth and debug namespace required).
-    #[clap(
-        long,
-        visible_alias = "l2",
-        requires = "l1_node_address",
-        requires = "l1_beacon_address",
-        env
-    )]
-    pub l2_node_address: Option<String>,
-    /// Address of L1 JSON-RPC endpoint to use (eth and debug namespace required)
-    #[clap(
-        long,
-        visible_alias = "l1",
-        requires = "l2_node_address",
-        requires = "l1_beacon_address",
-        env
-    )]
-    pub l1_node_address: Option<String>,
-    /// Address of the L1 Beacon API endpoint to use.
-    #[clap(
-        long,
-        visible_alias = "beacon",
-        requires = "l1_node_address",
-        requires = "l2_node_address",
-        env
-    )]
-    pub l1_beacon_address: Option<String>,
-    /// The Data Directory for preimage data storage. Optional if running in online mode,
-    /// required if running in offline mode.
-    #[clap(
-        long,
-        visible_alias = "db",
-        required_unless_present_all = ["l2_node_address", "l1_node_address", "l1_beacon_address"],
-        env
-    )]
-    pub data_dir: Option<PathBuf>,
-    /// Run the client program natively.
-    #[clap(long, conflicts_with = "server", required_unless_present = "server")]
-    pub native: bool,
-    /// Run in pre-image server mode without executing any client program. If not provided, the
-    /// host will run the client program in the host process.
-    #[clap(long, conflicts_with = "native", required_unless_present = "native")]
-    pub server: bool,
-    /// The L2 chain ID of a supported chain. If provided, the host will look for the corresponding
-    /// rollup config in the superchain registry.
-    #[clap(
-        long,
-        conflicts_with = "rollup_config_path",
-        required_unless_present = "rollup_config_path",
-        env
-    )]
-    pub l2_chain_id: Option<u64>,
-    /// Path to rollup config. If provided, the host will use this config instead of attempting to
-    /// look up the config in the superchain registry.
-    #[clap(
-        long,
-        alias = "rollup-cfg",
-        conflicts_with = "l2_chain_id",
-        required_unless_present = "l2_chain_id",
-        env
-    )]
-    pub rollup_config_path: Option<PathBuf>,
+    /// Host mode
+    #[clap(subcommand)]
+    pub mode: HostMode,
 }
 
-impl HostCli {
-    /// Returns `true` if the host is running in offline mode.
-    pub const fn is_offline(&self) -> bool {
-        self.l1_node_address.is_none() &&
-            self.l2_node_address.is_none() &&
-            self.l1_beacon_address.is_none()
-    }
-
-    /// Returns an HTTP provider for the given URL.
-    fn http_provider(url: &str) -> ReqwestProvider {
-        let url = url.parse().unwrap();
-        let http = Http::<Client>::new(url);
-        ReqwestProvider::new(RpcClient::new(http, true))
-    }
-
-    /// Creates the providers associated with the [HostCli] configuration.
-    ///
-    /// ## Returns
-    /// - A [ReqwestProvider] for the L1 node.
-    /// - An [OnlineBlobProvider] for the L1 beacon node.
-    /// - A [ReqwestProvider] for the L2 node.
-    pub async fn create_providers(
-        &self,
-    ) -> Result<(ReqwestProvider, OnlineBlobProvider, ReqwestProvider)> {
-        let blob_provider = OnlineBlobProvider::new_http(
-            self.l1_beacon_address.clone().ok_or(anyhow!("Beacon API URL must be set"))?,
-        )
-        .await
-        .map_err(|e| anyhow!("Failed to load blob provider configuration: {e}"))?;
-        let l1_provider = Self::http_provider(
-            self.l1_node_address.as_ref().ok_or(anyhow!("Provider must be set"))?,
-        );
-        let l2_provider = Self::http_provider(
-            self.l2_node_address.as_ref().ok_or(anyhow!("L2 node address must be set"))?,
-        );
-
-        Ok((l1_provider, blob_provider, l2_provider))
-    }
-
-    /// Parses the CLI arguments and returns a new instance of a [SharedKeyValueStore], as it is
-    /// configured to be created.
-    pub fn construct_kv_store(&self) -> SharedKeyValueStore {
-        let local_kv_store = LocalKeyValueStore::new(self.clone());
-
-        let kv_store: SharedKeyValueStore = if let Some(ref data_dir) = self.data_dir {
-            let disk_kv_store = DiskKeyValueStore::new(data_dir.clone());
-            let split_kv_store = SplitKeyValueStore::new(local_kv_store, disk_kv_store);
-            Arc::new(RwLock::new(split_kv_store))
-        } else {
-            let mem_kv_store = MemoryKeyValueStore::new();
-            let split_kv_store = SplitKeyValueStore::new(local_kv_store, mem_kv_store);
-            Arc::new(RwLock::new(split_kv_store))
-        };
-
-        kv_store
-    }
-
-    /// Reads the [RollupConfig] from the file system and returns it as a string.
-    pub fn read_rollup_config(&self) -> Result<RollupConfig> {
-        let path = self.rollup_config_path.as_ref().ok_or_else(|| {
-            anyhow::anyhow!(
-                "No rollup config path provided. Please provide a path to the rollup config."
-            )
-        })?;
-
-        // Read the serialized config from the file system.
-        let ser_config = std::fs::read_to_string(path)
-            .map_err(|e| anyhow!("Error reading RollupConfig file: {e}"))?;
-
-        // Deserialize the config and return it.
-        serde_json::from_str(&ser_config)
-            .map_err(|e| anyhow!("Error deserializing RollupConfig: {e}"))
-    }
+/// Operation modes for the host binary.
+#[derive(Subcommand, Serialize, Clone, Debug)]
+pub enum HostMode {
+    /// Run the host in single-chain mode.
+    Single(SingleChainHostCli),
 }
 
 /// Styles for the CLI application.
@@ -208,69 +51,3 @@ const fn cli_styles() -> clap::builder::Styles {
         .valid(Style::new().bold().underline().fg_color(Some(Color::Ansi(AnsiColor::Green))))
         .placeholder(Style::new().fg_color(Some(Color::Ansi(AnsiColor::White))))
 }
-
-#[cfg(test)]
-mod test {
-    use crate::HostCli;
-    use alloy_primitives::B256;
-    use clap::Parser;
-
-    #[test]
-    fn test_flags() {
-        let zero_hash_str = &B256::ZERO.to_string();
-        let default_flags = [
-            "host",
-            "--l1-head",
-            zero_hash_str,
-            "--l2-head",
-            zero_hash_str,
-            "--l2-output-root",
-            zero_hash_str,
-            "--l2-claim",
-            zero_hash_str,
-            "--l2-block-number",
-            "0",
-        ];
-
-        let cases = [
-            // valid
-            (["--server", "--l2-chain-id", "0", "--data-dir", "dummy"].as_slice(), true),
-            (["--server", "--rollup-config-path", "dummy", "--data-dir", "dummy"].as_slice(), true),
-            (["--native", "--l2-chain-id", "0", "--data-dir", "dummy"].as_slice(), true),
-            (["--native", "--rollup-config-path", "dummy", "--data-dir", "dummy"].as_slice(), true),
-            (
-                [
-                    "--l1-node-address",
-                    "dummy",
-                    "--l2-node-address",
-                    "dummy",
-                    "--l1-beacon-address",
-                    "dummy",
-                    "--server",
-                    "--l2-chain-id",
-                    "0",
-                ]
-                .as_slice(),
-                true,
-            ),
-            // invalid
-            (["--server", "--native", "--l2-chain-id", "0"].as_slice(), false),
-            (["--l2-chain-id", "0", "--rollup-config-path", "dummy", "--server"].as_slice(), false),
-            (["--server"].as_slice(), false),
-            (["--native"].as_slice(), false),
-            (["--rollup-config-path", "dummy"].as_slice(), false),
-            (["--l2-chain-id", "0"].as_slice(), false),
-            (["--l1-node-address", "dummy", "--server", "--l2-chain-id", "0"].as_slice(), false),
-            (["--l2-node-address", "dummy", "--server", "--l2-chain-id", "0"].as_slice(), false),
-            (["--l1-beacon-address", "dummy", "--server", "--l2-chain-id", "0"].as_slice(), false),
-            ([].as_slice(), false),
-        ];
-
-        for (args_ext, valid) in cases.into_iter() {
-            let args = default_flags.iter().chain(args_ext.iter()).cloned().collect::<Vec<_>>();
-
-            let parsed = HostCli::try_parse_from(args);
-            assert_eq!(parsed.is_ok(), valid);
-        }
-    }
-}

bin/host/src/eth/mod.rs

@@ -0,0 +1,10 @@
+//! Ethereum utilities for the host binary.
+
+mod blobs;
+pub use blobs::{
+    APIConfigResponse, APIGenesisResponse, OnlineBlobProvider, ReducedConfigData,
+    ReducedGenesisData,
+};
+
+mod precompiles;
+pub(crate) use precompiles::execute;

bin/host/src/fetcher.rs

@@ -0,0 +1,11 @@
+//! Fetcher trait definition.
+
+use kona_preimage::{HintRouter, PreimageFetcher};
+
+/// The Fetcher trait is used to define the interface for fetching data from the preimage oracle,
+/// by [PreimageKey], and routing hints.
+///
+/// [PreimageKey]: kona_preimage::PreimageKey
+pub trait Fetcher: PreimageFetcher + HintRouter {}
+
+impl<T> Fetcher for T where T: PreimageFetcher + HintRouter {}

bin/host/src/kv/mod.rs

@@ -14,9 +14,6 @@ pub use disk::DiskKeyValueStore;
 mod split;
 pub use split::SplitKeyValueStore;
 
-mod local;
-pub use local::LocalKeyValueStore;
-
 /// A type alias for a shared key-value store.
 pub type SharedKeyValueStore = Arc<RwLock<dyn KeyValueStore + Send + Sync>>;