587 lines
20 KiB
Rust
587 lines
20 KiB
Rust
//! Local Lattice node API with multi-store support
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use crate::{
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DataDir, MetaStore, NodeIdentity, PeerStatus, SigChain, Store, Uuid,
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log::LogError,
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meta_store::MetaStoreError,
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sigchain::SigChainError,
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store::StoreError,
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spawn_store_actor, StoreCmd,
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node_identity::NodeError as IdentityError,
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};
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use std::path::Path;
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use std::rc::Rc;
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use thiserror::Error;
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#[derive(Error, Debug)]
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pub enum NodeError {
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#[error("IO error: {0}")]
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Io(#[from] std::io::Error),
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#[error("Store error: {0}")]
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Store(#[from] StoreError),
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#[error("MetaStore error: {0}")]
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MetaStore(#[from] MetaStoreError),
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#[error("SigChain error: {0}")]
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SigChain(#[from] SigChainError),
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#[error("Log error: {0}")]
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Log(#[from] LogError),
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#[error("Node error: {0}")]
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Node(#[from] IdentityError),
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#[error("Already initialized")]
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AlreadyInitialized,
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#[error("Channel closed")]
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ChannelClosed,
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#[error("Actor error: {0}")]
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Actor(String),
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}
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pub struct NodeInfo {
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pub node_id: String,
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pub data_path: String,
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pub stores: Vec<Uuid>,
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}
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pub struct StoreInfo {
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pub store_id: Uuid,
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pub entries_replayed: u64,
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}
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pub struct NodeBuilder {
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pub data_dir: DataDir,
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}
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impl NodeBuilder {
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pub fn new() -> Self {
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Self { data_dir: DataDir::default() }
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}
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pub fn build(self) -> Result<Node, NodeError> {
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self.data_dir.ensure_dirs()?;
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let key_path = self.data_dir.identity_key();
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let is_new = !key_path.exists();
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let node = if key_path.exists() {
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NodeIdentity::load(&key_path)?
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} else {
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let node = NodeIdentity::generate();
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node.save(&key_path)?;
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node
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};
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let meta = MetaStore::open(self.data_dir.meta_db())?;
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// Set hostname on first creation
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if is_new {
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let hostname = hostname::get()
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.map(|s| s.to_string_lossy().to_string())
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.unwrap_or_else(|_| "unknown".to_string());
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let _ = meta.set_name(&hostname);
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}
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Ok(Node {
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data_dir: self.data_dir,
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node: Rc::new(node),
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meta,
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})
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}
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}
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impl Default for NodeBuilder {
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fn default() -> Self { Self::new() }
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}
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/// A local Lattice node (manages identity and store registry)
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pub struct Node {
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data_dir: DataDir,
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node: Rc<NodeIdentity>,
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meta: MetaStore,
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}
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impl Node {
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pub fn info(&self) -> NodeInfo {
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NodeInfo {
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node_id: hex::encode(self.node.public_key_bytes()),
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data_path: self.data_dir.base().display().to_string(),
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stores: self.meta.list_stores().unwrap_or_default(),
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}
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}
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pub fn node_id(&self) -> [u8; 32] {
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self.node.public_key_bytes()
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}
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/// Get the secret key bytes for Iroh integration (same Ed25519 key)
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pub fn secret_key_bytes(&self) -> [u8; 32] {
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self.node.secret_key_bytes()
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}
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pub fn data_path(&self) -> &Path {
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self.data_dir.base()
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}
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/// Get the node's display name (from meta.db, set on creation)
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pub fn name(&self) -> Option<String> {
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self.meta.name().ok().flatten()
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}
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/// Set the node's display name.
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/// Updates meta.db and if a store handle is provided, also updates /nodes/{pubkey}/name
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pub async fn set_name(&self, name: &str, store: Option<&StoreHandle>) -> Result<(), NodeError> {
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// Update meta.db
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self.meta.set_name(name)?;
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// If store provided, update there too
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if let Some(handle) = store {
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let pubkey_hex = hex::encode(self.node.public_key_bytes());
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let name_key = format!("/nodes/{}/name", pubkey_hex);
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handle.put(name_key.as_bytes(), name.as_bytes()).await?;
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}
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Ok(())
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}
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/// Get the root store ID
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pub fn root_store(&self) -> Result<Option<Uuid>, NodeError> {
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Ok(self.meta.root_store()?)
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}
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/// Open the root store if set
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pub fn open_root_store(&self) -> Result<Option<(StoreHandle, StoreInfo)>, NodeError> {
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match self.meta.root_store()? {
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Some(id) => Ok(Some(self.open_store(id)?)),
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None => Ok(None),
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}
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}
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/// Initialize the node with a root store (fails if already initialized).
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/// Writes the node's pubkey to `/nodes/{pubkey}/info` in the root store.
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pub async fn init(&self) -> Result<(Uuid, StoreHandle), NodeError> {
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if self.meta.root_store()?.is_some() {
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return Err(NodeError::AlreadyInitialized);
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}
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let store_id = self.create_store()?;
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self.meta.set_root_store(store_id)?;
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// Open the store and write our node info as separate keys
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let (handle, _) = self.open_store(store_id)?;
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let pubkey_hex = hex::encode(self.node.public_key_bytes());
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// Store node metadata as separate keys
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if let Some(name) = self.name() {
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let name_key = format!("/nodes/{}/name", pubkey_hex);
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handle.put(name_key.as_bytes(), name.as_bytes()).await?;
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}
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let added_at = std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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.map(|d| d.as_secs())
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.unwrap_or(0);
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let added_at_key = format!("/nodes/{}/added_at", pubkey_hex);
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handle.put(added_at_key.as_bytes(), added_at.to_string().as_bytes()).await?;
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// Write status = active
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let status_key = format!("/nodes/{}/status", pubkey_hex);
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handle.put(status_key.as_bytes(), PeerStatus::Active.as_str().as_bytes()).await?;
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Ok((store_id, handle))
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}
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pub fn list_stores(&self) -> Result<Vec<Uuid>, NodeError> {
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Ok(self.meta.list_stores()?)
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}
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pub fn create_store(&self) -> Result<Uuid, NodeError> {
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let store_id = Uuid::new_v4();
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self.create_store_internal(store_id)
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}
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/// Create a store with a specific UUID (for joining existing mesh)
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pub fn create_store_with_uuid(&self, store_id: Uuid) -> Result<Uuid, NodeError> {
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self.create_store_internal(store_id)
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}
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/// Set a store as the root store
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pub fn set_root_store(&self, store_id: Uuid) -> Result<(), NodeError> {
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self.meta.set_root_store(store_id)?;
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Ok(())
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}
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fn create_store_internal(&self, store_id: Uuid) -> Result<Uuid, NodeError> {
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self.data_dir.ensure_store_dirs(store_id)?;
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let _ = Store::open(self.data_dir.store_state_db(store_id))?;
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self.meta.add_store(store_id)?;
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Ok(store_id)
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}
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pub fn open_store(&self, store_id: Uuid) -> Result<(StoreHandle, StoreInfo), NodeError> {
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self.data_dir.ensure_store_dirs(store_id)?;
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let author_id_hex = hex::encode(self.node.public_key_bytes());
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let log_path = self.data_dir.store_log_file(store_id, &author_id_hex);
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let sigchain = if log_path.exists() {
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SigChain::from_log(&log_path, *store_id.as_bytes(), self.node.public_key_bytes())?
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} else {
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SigChain::new(&log_path, *store_id.as_bytes(), self.node.public_key_bytes())
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};
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let store = Store::open(self.data_dir.store_state_db(store_id))?;
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let entries_replayed = if log_path.exists() {
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store.replay_log(&log_path)?
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} else {
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0
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};
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let info = StoreInfo { store_id, entries_replayed };
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// Spawn actor thread - actor owns store, sigchain, and node copy
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let (tx, actor_handle) = spawn_store_actor(
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store_id,
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store,
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sigchain,
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(*self.node).clone(),
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);
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let handle = StoreHandle {
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store_id,
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tx,
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actor_handle: Some(actor_handle),
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};
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Ok((handle, info))
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}
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}
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/// A handle to a specific store - wraps channel to actor thread
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pub struct StoreHandle {
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store_id: Uuid,
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tx: tokio::sync::mpsc::Sender<StoreCmd>,
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actor_handle: Option<std::thread::JoinHandle<()>>,
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}
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impl Clone for StoreHandle {
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fn clone(&self) -> Self {
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Self {
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store_id: self.store_id,
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tx: self.tx.clone(),
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actor_handle: None, // Clones don't own the actor thread
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}
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}
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}
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impl StoreHandle {
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pub fn id(&self) -> Uuid { self.store_id }
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pub async fn get(&self, key: &[u8]) -> Result<Option<Vec<u8>>, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::Get { key: key.to_vec(), resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn get_heads(&self, key: &[u8]) -> Result<Vec<crate::HeadInfo>, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::GetHeads { key: key.to_vec(), resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn list(&self) -> Result<Vec<(Vec<u8>, Vec<u8>)>, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::List { resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn log_seq(&self) -> u64 {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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let _ = self.tx.send(StoreCmd::LogSeq { resp: resp_tx }).await;
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resp_rx.await.unwrap_or(0)
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}
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pub async fn applied_seq(&self) -> Result<u64, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::AppliedSeq { resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn author_state(&self, author: &[u8; 32]) -> Result<Option<crate::proto::AuthorState>, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::AuthorState { author: *author, resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn sync_state(&self) -> Result<crate::sync_state::SyncState, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::SyncState { resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn read_entries_after(&self, author: &[u8; 32], from_hash: Option<[u8; 32]>) -> Result<Vec<crate::proto::SignedEntry>, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::ReadEntriesAfter { author: *author, from_hash, resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn apply_entry(&self, entry: crate::proto::SignedEntry) -> Result<(), NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::ApplyEntry { entry, resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(NodeError::Store)
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}
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pub async fn put(&self, key: &[u8], value: &[u8]) -> Result<u64, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::Put { key: key.to_vec(), value: value.to_vec(), resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(|e| NodeError::Actor(e.to_string()))
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}
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pub async fn delete(&self, key: &[u8]) -> Result<u64, NodeError> {
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use StoreCmd;
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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self.tx.send(StoreCmd::Delete { key: key.to_vec(), resp: resp_tx }).await
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.map_err(|_| NodeError::ChannelClosed)?;
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resp_rx.await
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.map_err(|_| NodeError::ChannelClosed)?
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.map_err(|e| NodeError::Actor(e.to_string()))
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}
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}
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impl Drop for StoreHandle {
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fn drop(&mut self) {
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// Only send shutdown if we own the actor (non-cloned handle)
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if let Some(handle) = self.actor_handle.take() {
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let _ = self.tx.try_send(StoreCmd::Shutdown);
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let _ = handle.join();
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}
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// Clones (actor_handle = None) don't send shutdown - actor keeps running
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use std::env::temp_dir;
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fn temp_data_dir(name: &str) -> DataDir {
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let path = temp_dir().join(format!("lattice_node_test_{}", name));
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let _ = std::fs::remove_dir_all(&path);
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DataDir::new(path)
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}
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#[tokio::test]
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async fn test_create_and_open_store() {
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let data_dir = temp_data_dir("meta_store");
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let node = NodeBuilder { data_dir: data_dir.clone() }
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.build()
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.expect("Failed to create node");
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assert!(node.info().stores.is_empty());
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let store_id = node.create_store().expect("Failed to create store");
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// Verify it's in the list
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let stores = node.list_stores().expect("list failed");
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assert!(stores.contains(&store_id));
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let (handle, _) = node.open_store(store_id).expect("Failed to open store");
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handle.put(b"/key", b"value").await.expect("put failed");
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assert_eq!(handle.get(b"/key").await.unwrap(), Some(b"value".to_vec()));
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let _ = std::fs::remove_dir_all(data_dir.base());
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}
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#[tokio::test]
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async fn test_store_isolation() {
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let data_dir = temp_data_dir("meta_isolation");
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let node = NodeBuilder { data_dir: data_dir.clone() }
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.build()
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.expect("Failed to create node");
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let store_a = node.create_store().expect("create A");
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let store_b = node.create_store().expect("create B");
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let (handle_a, _) = node.open_store(store_a).expect("open A");
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handle_a.put(b"/key", b"from A").await.expect("put A");
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let (handle_b, _) = node.open_store(store_b).expect("open B");
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assert_eq!(handle_b.get(b"/key").await.unwrap(), None);
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assert_eq!(handle_a.get(b"/key").await.unwrap(), Some(b"from A".to_vec()));
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let _ = std::fs::remove_dir_all(data_dir.base());
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}
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#[tokio::test]
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async fn test_init_creates_root_store() {
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let data_dir = temp_data_dir("init_root");
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let node = NodeBuilder { data_dir: data_dir.clone() }
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.build()
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.expect("create node");
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// Initially no root store
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assert!(node.root_store().unwrap().is_none());
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// Init creates root store
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let (root_id, _handle) = node.init().await.expect("init failed");
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assert_eq!(node.root_store().unwrap(), Some(root_id));
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let _ = std::fs::remove_dir_all(data_dir.base());
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}
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#[tokio::test]
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async fn test_duplicate_init_fails() {
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let data_dir = temp_data_dir("init_dup");
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let node = NodeBuilder { data_dir: data_dir.clone() }
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.build()
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.expect("create node");
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node.init().await.expect("first init");
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// Second init should fail
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match node.init().await {
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Ok(_) => panic!("Expected AlreadyInitialized error"),
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Err(e) => match e {
|
|
NodeError::AlreadyInitialized => (),
|
|
_ => panic!("Expected AlreadyInitialized, got {:?}", e),
|
|
},
|
|
}
|
|
|
|
let _ = std::fs::remove_dir_all(data_dir.base());
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_root_store_in_info_after_init() {
|
|
let data_dir = temp_data_dir("init_info");
|
|
|
|
// First session: init
|
|
let node = NodeBuilder { data_dir: data_dir.clone() }
|
|
.build()
|
|
.expect("create node");
|
|
let (root_id, _) = node.init().await.expect("init");
|
|
drop(node); // End first session
|
|
|
|
// Second session: root_store should persist
|
|
let node = NodeBuilder { data_dir: data_dir.clone() }
|
|
.build()
|
|
.expect("reload node");
|
|
|
|
assert_eq!(node.root_store().unwrap(), Some(root_id));
|
|
|
|
let _ = std::fs::remove_dir_all(data_dir.base());
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_idempotent_put_and_delete() {
|
|
let data_dir = temp_data_dir("idempotent");
|
|
|
|
let node = NodeBuilder { data_dir: data_dir.clone() }
|
|
.build()
|
|
.expect("create node");
|
|
let (_, store) = node.init().await.expect("init");
|
|
|
|
// Get baseline seq after init
|
|
let baseline = store.log_seq().await;
|
|
|
|
// Put twice with same value - second should be idempotent
|
|
let seq1 = store.put(b"/key", b"value").await.expect("put 1");
|
|
assert_eq!(seq1, baseline + 1);
|
|
|
|
let seq2 = store.put(b"/key", b"value").await.expect("put 2");
|
|
assert_eq!(seq2, baseline + 1, "Second put should be idempotent (no new entry)");
|
|
|
|
assert_eq!(store.log_seq().await, baseline + 1);
|
|
|
|
// Delete twice - second should be idempotent
|
|
let seq3 = store.delete(b"/key").await.expect("delete 1");
|
|
assert_eq!(seq3, baseline + 2);
|
|
|
|
let seq4 = store.delete(b"/key").await.expect("delete 2");
|
|
assert_eq!(seq4, baseline + 2, "Second delete should be idempotent (no new entry)");
|
|
|
|
assert_eq!(store.log_seq().await, baseline + 2);
|
|
|
|
let _ = std::fs::remove_dir_all(data_dir.base());
|
|
}
|
|
|
|
#[tokio::test]
|
|
async fn test_set_name_updates_store() {
|
|
let data_dir = temp_data_dir("set_name");
|
|
|
|
let node = NodeBuilder { data_dir: data_dir.clone() }
|
|
.build()
|
|
.expect("create node");
|
|
|
|
// Set initial name
|
|
assert!(node.name().is_some());
|
|
let initial_name = node.name().unwrap();
|
|
|
|
// Init creates root store
|
|
let (_, store) = node.init().await.expect("init");
|
|
|
|
// Verify initial name is in store
|
|
let pubkey_hex = hex::encode(node.node_id());
|
|
let name_key = format!("/nodes/{}/name", pubkey_hex);
|
|
let stored_name = store.get(name_key.as_bytes()).await.unwrap();
|
|
assert_eq!(stored_name, Some(initial_name.as_bytes().to_vec()));
|
|
|
|
// Change name
|
|
let new_name = "my-custom-name";
|
|
node.set_name(new_name, Some(&store)).await.expect("set_name");
|
|
|
|
// Verify meta.db updated
|
|
assert_eq!(node.name(), Some(new_name.to_string()));
|
|
|
|
// Verify store updated
|
|
let stored_name = store.get(name_key.as_bytes()).await.unwrap();
|
|
assert_eq!(stored_name, Some(new_name.as_bytes().to_vec()));
|
|
|
|
let _ = std::fs::remove_dir_all(data_dir.base());
|
|
}
|
|
}
|