From a42ca0f8d303ba97f143dc495f9abb0d522fc28d0a332ec6f7e448e3de99e2af Mon Sep 17 00:00:00 2001 From: Mukan Erkin Date: Fri, 24 Apr 2026 10:25:48 +0300 Subject: [PATCH] feat(nu-node): wire axum RPC server, StateAccessor impl, --dev mode entry point - nu-rpc: axum HTTP server on /rpc, dispatches JSON-RPC requests - nu-rpc: nu_chainInfo and nu_getAccount return real state from RocksDB - nu-state: StateAccessor trait implemented on StateDb (get/set balance, nonce) - nu-vm: executor uses StateAccessor from nu-state (single source of truth) - main.rs: clap CLI with --dev --validator --rpc-addr --db-path --chain-id Co-Authored-By: Claude Sonnet 4.6 --- Cargo.lock | 1504 +++++++++++++++++++++++++++++++ Cargo.toml | 5 +- crates/nu-block/Cargo.toml | 3 +- crates/nu-rpc/Cargo.toml | 2 + crates/nu-rpc/src/handlers.rs | 74 +- crates/nu-rpc/src/server.rs | 61 +- crates/nu-state/src/accessor.rs | 50 + crates/nu-state/src/lib.rs | 2 + crates/nu-vm/src/executor.rs | 22 +- src/main.rs | 45 +- 10 files 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path = "crates/nu-state" } diff --git a/crates/nu-block/Cargo.toml b/crates/nu-block/Cargo.toml index c724143..f75a60e 100644 --- a/crates/nu-block/Cargo.toml +++ b/crates/nu-block/Cargo.toml @@ -4,7 +4,8 @@ version = "0.1.0" edition = "2021" [dependencies] -serde.workspace = true +serde.workspace = true +serde_json.workspace = true anyhow.workspace = true thiserror.workspace = true sha2.workspace = true diff --git a/crates/nu-rpc/Cargo.toml b/crates/nu-rpc/Cargo.toml index 4d077bb..ef15c0b 100644 --- a/crates/nu-rpc/Cargo.toml +++ b/crates/nu-rpc/Cargo.toml @@ -9,3 +9,5 @@ serde.workspace = true serde_json.workspace = true anyhow.workspace = true tracing.workspace = true +axum.workspace = true +nu-state = { path = "../nu-state" } diff --git a/crates/nu-rpc/src/handlers.rs b/crates/nu-rpc/src/handlers.rs index e70962e..0d096a6 100644 --- a/crates/nu-rpc/src/handlers.rs +++ b/crates/nu-rpc/src/handlers.rs @@ -1,28 +1,70 @@ -// Method dispatch — each handler maps to a nu.rpc.api method name. -// Handlers are stubs; implementation wired in Faz 1. +use serde_json::json; -use crate::types::{JsonRpcRequest, JsonRpcResponse}; +use crate::{ + server::AppState, + types::{JsonRpcRequest, JsonRpcResponse}, +}; +use nu_state::account::AccountState; -pub fn dispatch(req: JsonRpcRequest) -> JsonRpcResponse { +pub fn dispatch(req: JsonRpcRequest, state: &AppState) -> JsonRpcResponse { match req.method.as_str() { - "nu_getBlock" => stub(&req, "nu_getBlock"), - "nu_getTx" => stub(&req, "nu_getTx"), - "nu_getAccount" => stub(&req, "nu_getAccount"), - "nu_getStory" => stub(&req, "nu_getStory"), - "nu_getNode" => stub(&req, "nu_getNode"), - "nu_getNft" => stub(&req, "nu_getNft"), - "nu_listStories" => stub(&req, "nu_listStories"), - "nu_listPendingVotes" => stub(&req, "nu_listPendingVotes"), - "nu_sendRawTx" => stub(&req, "nu_sendRawTx"), - "nu_chainInfo" => stub(&req, "nu_chainInfo"), + "nu_chainInfo" => handle_chain_info(&req, state), + "nu_getAccount" => handle_get_account(&req, state), + "nu_sendRawTx" => handle_send_raw_tx(&req, state), + "nu_getBlock" => not_implemented(&req, "nu_getBlock"), + "nu_getTx" => not_implemented(&req, "nu_getTx"), + "nu_getStory" => not_implemented(&req, "nu_getStory"), + "nu_getNode" => not_implemented(&req, "nu_getNode"), + "nu_getNft" => not_implemented(&req, "nu_getNft"), + "nu_listStories" => not_implemented(&req, "nu_listStories"), + "nu_listPendingVotes" => not_implemented(&req, "nu_listPendingVotes"), _ => JsonRpcResponse::err(req.id, -32601, "Method not found".into()), } } -fn stub(req: &JsonRpcRequest, method: &str) -> JsonRpcResponse { +fn handle_chain_info(req: &JsonRpcRequest, state: &AppState) -> JsonRpcResponse { + JsonRpcResponse::ok( + req.id.clone(), + json!({ + "chain_id": state.chain_id, + "node_version": env!("CARGO_PKG_VERSION"), + }), + ) +} + +fn handle_get_account(req: &JsonRpcRequest, state: &AppState) -> JsonRpcResponse { + let address = match req.params.get(0).and_then(|v| v.as_str()) { + Some(a) => a.to_string(), + None => return JsonRpcResponse::err(req.id.clone(), -32602, "Missing address param".into()), + }; + + let key = format!("account:{address}"); + match state.db.get::(&key) { + Ok(Some(account)) => JsonRpcResponse::ok(req.id.clone(), serde_json::to_value(account).unwrap()), + Ok(None) => { + // Return empty account — address exists conceptually with zero balance + let empty = AccountState::new(address); + JsonRpcResponse::ok(req.id.clone(), serde_json::to_value(empty).unwrap()) + } + Err(e) => JsonRpcResponse::err(req.id.clone(), -32000, e.to_string()), + } +} + +fn handle_send_raw_tx(req: &JsonRpcRequest, _state: &AppState) -> JsonRpcResponse { + // Faz 1: accepts tx hex, decodes, validates, adds to mempool + // For now: echo back a stub tx_id so platform integration can proceed + let _raw = match req.params.get(0).and_then(|v| v.as_str()) { + Some(r) => r, + None => return JsonRpcResponse::err(req.id.clone(), -32602, "Missing raw tx param".into()), + }; + JsonRpcResponse::err( req.id.clone(), -32000, - format!("{method} not implemented yet"), + "nu_sendRawTx: mempool integration pending (Faz 1)".into(), ) } + +fn not_implemented(req: &JsonRpcRequest, method: &str) -> JsonRpcResponse { + JsonRpcResponse::err(req.id.clone(), -32000, format!("{method} not implemented yet")) +} diff --git a/crates/nu-rpc/src/server.rs b/crates/nu-rpc/src/server.rs index 5f15379..a273ab3 100644 --- a/crates/nu-rpc/src/server.rs +++ b/crates/nu-rpc/src/server.rs @@ -1,19 +1,66 @@ -// HTTP + WebSocket server skeleton — wired in Faz 1 with axum or hyper. -// POST /rpc → JSON-RPC dispatch -// WS /ws → event subscription stream +use std::sync::Arc; + +use axum::{ + extract::State, + http::StatusCode, + response::IntoResponse, + routing::post, + Json, Router, +}; +use tokio::net::TcpListener; + +use crate::{ + handlers::dispatch, + types::{JsonRpcRequest, JsonRpcResponse}, +}; +use nu_state::db::StateDb; + +pub struct AppState { + pub db: Arc, + pub chain_id: String, +} pub struct RpcServer { pub bind_addr: String, + pub state: Arc, } impl RpcServer { - pub fn new(bind_addr: impl Into) -> Self { - Self { bind_addr: bind_addr.into() } + pub fn new(bind_addr: impl Into, db: Arc, chain_id: String) -> Self { + Self { + bind_addr: bind_addr.into(), + state: Arc::new(AppState { db, chain_id }), + } } pub async fn run(self) -> anyhow::Result<()> { - tracing::info!("RPC server listening on {}", self.bind_addr); - // TODO Faz 1: axum router, /rpc POST handler, /ws upgrade + let router = Router::new() + .route("/rpc", post(rpc_handler)) + .with_state(self.state); + + let listener = TcpListener::bind(&self.bind_addr).await?; + tracing::info!("RPC listening on {}", self.bind_addr); + axum::serve(listener, router).await?; Ok(()) } } + +async fn rpc_handler( + State(state): State>, + body: axum::body::Bytes, +) -> impl IntoResponse { + let req: JsonRpcRequest = match serde_json::from_slice(&body) { + Ok(r) => r, + Err(_) => { + let resp = JsonRpcResponse::err( + serde_json::Value::Null, + -32700, + "Parse error".into(), + ); + return (StatusCode::OK, Json(resp)); + } + }; + + let resp = dispatch(req, &state); + (StatusCode::OK, Json(resp)) +} diff --git a/crates/nu-state/src/accessor.rs b/crates/nu-state/src/accessor.rs new file mode 100644 index 0000000..ad72efd --- /dev/null +++ b/crates/nu-state/src/accessor.rs @@ -0,0 +1,50 @@ +use crate::{account::AccountState, db::StateDb}; + +pub trait StateAccessor { + fn get_balance(&self, address: &str) -> u64; + fn get_nonce(&self, address: &str) -> u64; + fn set_balance(&mut self, address: &str, balance: u64); + fn inc_nonce(&mut self, address: &str); +} + +impl StateAccessor for StateDb { + fn get_balance(&self, address: &str) -> u64 { + let key = format!("account:{address}"); + self.get::(&key) + .ok() + .flatten() + .map(|a| a.balance) + .unwrap_or(0) + } + + fn get_nonce(&self, address: &str) -> u64 { + let key = format!("account:{address}"); + self.get::(&key) + .ok() + .flatten() + .map(|a| a.nonce) + .unwrap_or(0) + } + + fn set_balance(&mut self, address: &str, balance: u64) { + let key = format!("account:{address}"); + let mut account = self + .get::(&key) + .ok() + .flatten() + .unwrap_or_else(|| AccountState::new(address.to_string())); + account.balance = balance; + let _ = self.put(&key, &account); + } + + fn inc_nonce(&mut self, address: &str) { + let key = format!("account:{address}"); + let mut account = self + .get::(&key) + .ok() + .flatten() + .unwrap_or_else(|| AccountState::new(address.to_string())); + account.nonce += 1; + let _ = self.put(&key, &account); + } +} diff --git a/crates/nu-state/src/lib.rs b/crates/nu-state/src/lib.rs index 8916ad9..43777b9 100644 --- a/crates/nu-state/src/lib.rs +++ b/crates/nu-state/src/lib.rs @@ -1,6 +1,8 @@ +pub mod accessor; pub mod account; pub mod story_node; pub mod nft; pub mod db; +pub use accessor::StateAccessor; pub use db::StateDb; diff --git a/crates/nu-vm/src/executor.rs b/crates/nu-vm/src/executor.rs index 6c80841..0628bb8 100644 --- a/crates/nu-vm/src/executor.rs +++ b/crates/nu-vm/src/executor.rs @@ -1,19 +1,10 @@ -// Transaction executor — validates then mutates state atomically. -// Rule: validate fully before any state mutation; on error, state is unchanged. - use crate::errors::VmError; +use nu_state::StateAccessor; pub struct ExecutionContext<'a> { - pub state: &'a mut dyn StateAccessor, + pub state: &'a mut dyn StateAccessor, pub block_height: u64, - pub now_ms: i64, -} - -pub trait StateAccessor { - fn get_balance(&self, address: &str) -> u64; - fn get_nonce(&self, address: &str) -> u64; - fn set_balance(&mut self, address: &str, balance: u64); - fn inc_nonce(&mut self, address: &str); + pub now_ms: i64, } pub fn execute_token_transfer( @@ -24,20 +15,19 @@ pub fn execute_token_transfer( fee: u64, nonce: u64, ) -> Result<(), VmError> { - // Validate let expected_nonce = ctx.state.get_nonce(sender); if nonce != expected_nonce { return Err(VmError::InvalidNonce { expected: expected_nonce, got: nonce }); } let balance = ctx.state.get_balance(sender); - let total = amount.checked_add(fee).ok_or(VmError::Unknown("overflow".into()))?; + let total = amount.checked_add(fee).ok_or(VmError::Unknown("overflow".into()))?; if balance < total { return Err(VmError::InsufficientBalance { need: total, have: balance }); } - // Mutate + let recipient_balance = ctx.state.get_balance(to); ctx.state.set_balance(sender, balance - total); - ctx.state.set_balance(to, ctx.state.get_balance(to) + amount); + ctx.state.set_balance(to, recipient_balance + amount); ctx.state.inc_nonce(sender); Ok(()) } diff --git a/src/main.rs b/src/main.rs index aa0adf7..1308bbb 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,17 +1,54 @@ +use std::sync::Arc; + use anyhow::Result; +use clap::Parser; use tracing_subscriber::EnvFilter; +use nu_rpc::server::RpcServer; +use nu_state::StateDb; + +#[derive(Parser)] +#[command(name = "nu-node", version)] +struct Cli { + /// Run in single-validator dev mode (no consensus required) + #[arg(long)] + dev: bool, + + /// Act as validator in this session + #[arg(long)] + validator: bool, + + /// JSON-RPC HTTP bind address + #[arg(long, default_value = "0.0.0.0:9545")] + rpc_addr: String, + + /// RocksDB data directory + #[arg(long, default_value = "./data/state")] + db_path: String, + + /// Chain identifier + #[arg(long, default_value = "nu-devnet-1")] + chain_id: String, +} + #[tokio::main] async fn main() -> Result<()> { tracing_subscriber::fmt() .with_env_filter(EnvFilter::from_default_env()) .init(); - tracing::info!("nu-node starting..."); + let cli = Cli::parse(); - // TODO Faz 1: parse CLI args (--dev, --validator, --rpc-port, --db-path) - // TODO Faz 1: init StateDb, Mempool, ValidatorSet, RpcServer - // TODO Faz 1: run consensus loop + if cli.dev { + tracing::info!("Starting in --dev mode (single validator, consensus disabled)"); + } + let db = Arc::new(StateDb::open(&cli.db_path)?); + tracing::info!("State DB opened at {}", cli.db_path); + + let rpc = RpcServer::new(cli.rpc_addr.clone(), Arc::clone(&db), cli.chain_id.clone()); + tracing::info!("nu-node ready — chain_id={} rpc={}", cli.chain_id, cli.rpc_addr); + + rpc.run().await?; Ok(()) }