136 lines
4.1 KiB
Rust
136 lines
4.1 KiB
Rust
use std::{net::IpAddr, str::FromStr};
|
|
|
|
use crate::{DbConnection, SnowDb};
|
|
|
|
use hickory_resolver::Name;
|
|
use rocket::futures::channel::mpsc as rocket_mpsc;
|
|
use rocket::futures::StreamExt;
|
|
use rocket::tokio;
|
|
use snow_scanner_worker::detection::{detect_scanner_from_name, validate_ip};
|
|
|
|
use crate::Scanner;
|
|
|
|
/// Handles all the raw events being streamed from balancers and parses and filters them into only the events we care about.
|
|
pub struct EventBus {
|
|
events_rx: rocket_mpsc::Receiver<EventBusWriterEvent>,
|
|
events_tx: rocket_mpsc::Sender<EventBusWriterEvent>,
|
|
bus_tx: tokio::sync::broadcast::Sender<EventBusEvent>,
|
|
}
|
|
|
|
impl EventBus {
|
|
pub fn new() -> Self {
|
|
let (events_tx, events_rx) = rocket_mpsc::channel(100);
|
|
let (bus_tx, _) = tokio::sync::broadcast::channel(100);
|
|
Self {
|
|
events_rx,
|
|
events_tx,
|
|
bus_tx,
|
|
}
|
|
}
|
|
|
|
// db: &Connection<SnowDb>
|
|
pub async fn run(&mut self, mut conn: DbConnection<SnowDb>) {
|
|
info!("EventBus started");
|
|
loop {
|
|
tokio::select! {
|
|
Some(event) = self.events_rx.next() => {
|
|
self.handle_event(event, &mut conn).await;
|
|
}
|
|
else => {
|
|
warn!("EventBus stopped");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
async fn handle_event(&self, event: EventBusWriterEvent, db: &mut DbConnection<SnowDb>) {
|
|
info!("Received event");
|
|
if self.bus_tx.receiver_count() == 0 {
|
|
return;
|
|
}
|
|
match event {
|
|
EventBusWriterEvent::ScannerFoundResponse { name, address } => {
|
|
let ip: IpAddr = address.into();
|
|
if !validate_ip(ip) {
|
|
error!("Invalid IP address: {ip}");
|
|
return;
|
|
}
|
|
let name = Name::from_str(name.as_str()).unwrap();
|
|
match detect_scanner_from_name(&name) {
|
|
Ok(Some(scanner_type)) => {
|
|
match Scanner::find_or_new(ip, scanner_type, Some(name), db).await {
|
|
Ok(scanner) => {
|
|
let _ = scanner.save(db).await;
|
|
}
|
|
Err(err) => {
|
|
error!("Error find or save: {:?}", err);
|
|
}
|
|
}
|
|
}
|
|
Ok(None) => {
|
|
error!("No name detected for: {:?}", name);
|
|
}
|
|
|
|
Err(err) => {
|
|
error!("No name detected error: {:?}", err);
|
|
}
|
|
};
|
|
}
|
|
EventBusWriterEvent::BroadcastMessage(msg) => match self.bus_tx.send(msg) {
|
|
Ok(count) => {
|
|
info!("Event sent to {count} subscribers");
|
|
}
|
|
Err(err) => {
|
|
error!("Error sending event to subscribers: {}", err);
|
|
}
|
|
},
|
|
}
|
|
}
|
|
|
|
pub fn subscriber(&self) -> EventBusSubscriber {
|
|
EventBusSubscriber::new(self.bus_tx.clone())
|
|
}
|
|
|
|
pub fn writer(&self) -> EventBusWriter {
|
|
EventBusWriter::new(self.events_tx.clone())
|
|
}
|
|
}
|
|
|
|
pub type EventBusEvent = rocket_ws::Message;
|
|
|
|
/// Enables subscriptions to the event bus
|
|
pub struct EventBusSubscriber {
|
|
bus_tx: tokio::sync::broadcast::Sender<EventBusEvent>,
|
|
}
|
|
|
|
/// Enables subscriptions to the event bus
|
|
pub struct EventBusWriter {
|
|
bus_tx: rocket_mpsc::Sender<EventBusWriterEvent>,
|
|
}
|
|
|
|
pub enum EventBusWriterEvent {
|
|
BroadcastMessage(rocket_ws::Message),
|
|
ScannerFoundResponse { name: String, address: IpAddr },
|
|
}
|
|
|
|
impl EventBusWriter {
|
|
pub fn new(bus_tx: rocket_mpsc::Sender<EventBusWriterEvent>) -> Self {
|
|
Self { bus_tx }
|
|
}
|
|
|
|
pub fn write(&self) -> rocket_mpsc::Sender<EventBusWriterEvent> {
|
|
self.bus_tx.clone()
|
|
}
|
|
}
|
|
|
|
impl EventBusSubscriber {
|
|
pub fn new(bus_tx: tokio::sync::broadcast::Sender<EventBusEvent>) -> Self {
|
|
Self { bus_tx }
|
|
}
|
|
|
|
pub fn subscribe(&self) -> tokio::sync::broadcast::Receiver<EventBusEvent> {
|
|
self.bus_tx.subscribe()
|
|
}
|
|
}
|