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mod handle;
mod interaction;
mod member_churn;
mod messaging;
mod split;
use crate::{
chunk_store::UsedSpace,
chunks::Chunks,
event_mapping::{map_routing_event, LazyError, Mapping, MsgContext},
metadata::Metadata,
network::Network,
node_ops::NodeDuty,
section_funds::SectionFunds,
state_db::{get_reward_pk, store_new_reward_keypair},
transfers::Transfers,
Config, Error, Result,
};
use bls::SecretKey;
use ed25519_dalek::PublicKey as Ed25519PublicKey;
use log::{error, info};
use sn_data_types::PublicKey;
use sn_routing::EventStream;
use sn_routing::{Prefix, XorName};
use std::path::{Path, PathBuf};
use std::{
fmt::{self, Display, Formatter},
net::SocketAddr,
};
#[derive(Clone)]
pub struct NodeInfo {
pub genesis: bool,
pub root_dir: PathBuf,
pub node_name: XorName,
pub node_id: Ed25519PublicKey,
pub reward_key: PublicKey,
}
impl NodeInfo {
pub fn path(&self) -> &Path {
self.root_dir.as_path()
}
}
struct AdultRole {
chunks: Chunks,
}
struct ElderRole {
meta_data: Metadata,
transfers: Transfers,
section_funds: SectionFunds,
}
#[allow(clippy::large_enum_variant)]
enum Role {
Adult(AdultRole),
Elder(ElderRole),
}
impl Role {
fn as_adult(&self) -> Result<&AdultRole> {
match self {
Self::Adult(adult_state) => Ok(adult_state),
_ => Err(Error::NotAnAdult),
}
}
fn as_adult_mut(&mut self) -> Result<&mut AdultRole> {
match self {
Self::Adult(adult_state) => Ok(adult_state),
_ => Err(Error::NotAnAdult),
}
}
fn as_elder(&self) -> Result<&ElderRole> {
match self {
Self::Elder(elder_state) => Ok(elder_state),
_ => Err(Error::NotAnElder),
}
}
fn as_elder_mut(&mut self) -> Result<&mut ElderRole> {
match self {
Self::Elder(elder_state) => Ok(elder_state),
_ => Err(Error::NotAnElder),
}
}
}
pub struct Node {
network_api: Network,
network_events: EventStream,
node_info: NodeInfo,
used_space: UsedSpace,
role: Role,
}
impl Node {
#[allow(clippy::eval_order_dependence)]
pub async fn new(config: &Config) -> Result<Self> {
let root_dir_buf = config.root_dir()?;
let root_dir = root_dir_buf.as_path();
std::fs::create_dir_all(root_dir)?;
let reward_key_task = async move {
let res: Result<PublicKey>;
match get_reward_pk(root_dir).await? {
Some(public_key) => {
res = Ok(PublicKey::Bls(public_key));
}
None => {
let secret = SecretKey::random();
let public = secret.public_key();
store_new_reward_keypair(root_dir, &secret, &public).await?;
res = Ok(PublicKey::Bls(public));
}
};
res
}
.await;
let reward_key = reward_key_task?;
let (network_api, network_events) = Network::new(config).await?;
let node_info = NodeInfo {
genesis: config.is_first(),
root_dir: root_dir_buf,
node_name: network_api.our_name().await,
node_id: network_api.public_key().await,
reward_key,
};
let used_space = UsedSpace::new(config.max_capacity());
let node = Self {
role: Role::Adult(AdultRole {
chunks: Chunks::new(node_info.root_dir.as_path(), used_space.clone()).await?,
}),
node_info,
used_space,
network_api,
network_events,
};
messaging::send(node.register_wallet().await, &node.network_api).await?;
Ok(node)
}
pub fn our_connection_info(&mut self) -> SocketAddr {
self.network_api.our_connection_info()
}
pub async fn our_name(&mut self) -> XorName {
self.network_api.our_name().await
}
pub async fn our_prefix(&mut self) -> Prefix {
self.network_api.our_prefix().await
}
pub async fn run(&mut self) -> Result<()> {
while let Some(event) = self.network_events.next().await {
match map_routing_event(event, &self.network_api).await {
Mapping::Ok { op, ctx } => self.process_while_any(op, ctx).await,
Mapping::Error(error) => handle_error(error),
}
}
Ok(())
}
async fn process_while_any(&mut self, op: NodeDuty, ctx: Option<MsgContext>) {
let mut next_ops = vec![op];
while !next_ops.is_empty() {
let mut pending_node_ops: Vec<NodeDuty> = vec![];
for duty in next_ops {
match self.handle(duty).await {
Ok(new_ops) => pending_node_ops.extend(new_ops),
Err(e) => try_handle_error(e, ctx.clone()),
};
}
next_ops = pending_node_ops;
}
}
}
fn handle_error(err: LazyError) {
use std::error::Error;
info!(
"unimplemented: Handle errors. This should be return w/ lazyError to sender. {:?}",
err
);
if let Some(source) = err.error.source() {
error!("Source of error: {:?}", source);
}
}
fn try_handle_error(err: Error, ctx: Option<MsgContext>) {
use std::error::Error;
if let Some(source) = err.source() {
if let Some(_ctx) = ctx {
info!(
"unimplemented: Handle errors. This should be return w/ lazyError to sender. {:?}",
err
);
error!("Source of error: {:?}", source);
} else {
error!(
"Erroring without a msg context. Source of error: {:?}",
source
);
}
} else {
info!("unimplemented: Handle errors. {:?}", err);
}
}
impl Display for Node {
fn fmt(&self, formatter: &mut Formatter) -> fmt::Result {
write!(formatter, "Node")
}
}