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use crate::RuleEngine;
use anyhow::{Context, Result};
use arrow_json::ReaderBuilder;
use std::io::Cursor;
use std::sync::Arc;
use tokio::net::TcpStream;
use tokio::sync::RwLock;
use tokio_tungstenite::WebSocketStream;
use tracing::{debug, error, info};
pub type SharedEngine = Arc<RwLock<RuleEngine>>;
/// Kafka consumer for ingesting events
pub struct KafkaIngestion {
engine: SharedEngine,
brokers: Vec<String>,
topic: String,
group_id: String,
auto_commit: bool,
}
impl KafkaIngestion {
pub fn new(
engine: SharedEngine,
brokers: Vec<String>,
topic: String,
group_id: String,
auto_commit: bool,
) -> Self {
Self {
engine,
brokers,
topic,
group_id,
auto_commit,
}
}
pub async fn run(&self) -> Result<()> {
use futures::StreamExt;
use rdkafka::config::ClientConfig;
use rdkafka::consumer::{Consumer, StreamConsumer};
use rdkafka::Message;
info!(
brokers = ?self.brokers,
topic = %self.topic,
group_id = %self.group_id,
"Starting Kafka consumer"
);
// Create Kafka consumer
let consumer: StreamConsumer = ClientConfig::new()
.set("bootstrap.servers", self.brokers.join(","))
.set("group.id", &self.group_id)
.set("enable.partition.eof", "false")
.set("session.timeout.ms", "6000")
.set(
"enable.auto.commit",
if self.auto_commit { "true" } else { "false" },
)
.set("auto.offset.reset", "earliest")
.create()
.context("Failed to create Kafka consumer")?;
consumer
.subscribe(&[&self.topic])
.context("Failed to subscribe to Kafka topic")?;
info!("Kafka consumer subscribed to topic: {}", self.topic);
// Process messages
let mut message_stream = consumer.stream();
while let Some(message_result) = message_stream.next().await {
match message_result {
Ok(message) => {
if let Some(payload) = message.payload() {
match self.process_message(payload).await {
Ok(_) => {
debug!(
partition = ?message.partition(),
offset = ?message.offset(),
"Processed Kafka message"
);
}
Err(e) => {
error!(
error = %e,
partition = ?message.partition(),
offset = ?message.offset(),
"Failed to process Kafka message"
);
}
}
}
}
Err(e) => {
error!(error = %e, "Kafka message error");
}
}
}
Ok(())
}
async fn process_message(&self, payload: &[u8]) -> Result<()> {
// Try to parse as JSON
let json_value: serde_json::Value =
serde_json::from_slice(payload).context("Failed to parse Kafka message as JSON")?;
// Convert to RecordBatch
let json_data = serde_json::to_vec(&json_value)?;
let cursor = Cursor::new(json_data);
let engine_lock = self.engine.read().await;
let schema = engine_lock.schema();
drop(engine_lock);
let reader = ReaderBuilder::new(schema.clone())
.build(cursor)
.context("Failed to create JSON reader")?;
// Process all batches from the reader
for batch_result in reader {
match batch_result {
Ok(batch) => {
let mut engine_lock = self.engine.write().await;
match engine_lock.process_batch(&batch).await {
Ok(_traces) => {
debug!(rows = batch.num_rows(), "Processed batch from Kafka");
}
Err(e) => {
error!(error = %e, "Failed to process batch from Kafka");
}
}
}
Err(e) => {
error!(error = %e, "Failed to read batch from Kafka message");
}
}
}
Ok(())
}
}
/// WebSocket server for ingesting events
pub struct WebSocketIngestion {
engine: SharedEngine,
bind: String,
max_connections: usize,
}
impl WebSocketIngestion {
pub fn new(engine: SharedEngine, bind: String, max_connections: usize) -> Self {
Self {
engine,
bind,
max_connections,
}
}
pub async fn run(&self) -> Result<()> {
use tokio::net::TcpListener;
use tokio_tungstenite::accept_async;
info!(
bind = %self.bind,
max_connections = self.max_connections,
"Starting WebSocket server"
);
let listener = TcpListener::bind(&self.bind).await?;
info!("WebSocket server listening on {}", self.bind);
while let Ok((stream, addr)) = listener.accept().await {
let engine = self.engine.clone();
tokio::spawn(async move {
info!(client = %addr, "New WebSocket connection");
match accept_async(stream).await {
Ok(ws_stream) => {
if let Err(e) = handle_websocket_stream(ws_stream, engine).await {
error!(error = %e, "WebSocket handler error");
}
}
Err(e) => {
error!(error = %e, "Failed to accept WebSocket connection");
}
}
});
}
Ok(())
}
}
async fn handle_websocket_stream(
stream: WebSocketStream<TcpStream>,
engine: SharedEngine,
) -> Result<()> {
use arrow_json::ReaderBuilder;
use futures::{SinkExt, StreamExt};
use std::io::Cursor;
use tokio_tungstenite::tungstenite::Message;
let (mut sender, mut receiver) = stream.split();
while let Some(msg) = receiver.next().await {
match msg {
Ok(Message::Text(text)) => {
// Try to parse as JSON
match serde_json::from_str::<serde_json::Value>(&text) {
Ok(json_value) => {
// Convert to RecordBatch
let json_data = match serde_json::to_vec(&json_value) {
Ok(data) => data,
Err(e) => {
error!(error = %e, "Failed to serialize JSON");
continue;
}
};
let cursor = Cursor::new(json_data);
let engine_lock = engine.read().await;
let schema = engine_lock.schema();
drop(engine_lock);
let reader = match ReaderBuilder::new(schema.clone()).build(cursor) {
Ok(r) => r,
Err(e) => {
error!(error = %e, "Failed to create JSON reader");
continue;
}
};
// Process all batches
for batch_result in reader {
match batch_result {
Ok(batch) => {
let mut engine_lock = engine.write().await;
match engine_lock.process_batch(&batch).await {
Ok(_traces) => {
debug!(
rows = batch.num_rows(),
"Processed batch from WebSocket"
);
}
Err(e) => {
error!(error = %e, "Failed to process batch from WebSocket");
}
}
}
Err(e) => {
error!(error = %e, "Failed to read batch from WebSocket message");
}
}
}
}
Err(e) => {
error!(error = %e, "Failed to parse WebSocket message as JSON");
}
}
}
Ok(Message::Binary(data)) => {
// Try to parse binary as JSON
match serde_json::from_slice::<serde_json::Value>(&data) {
Ok(json_value) => {
// Same processing as text
let json_data = match serde_json::to_vec(&json_value) {
Ok(data) => data,
Err(e) => {
error!(error = %e, "Failed to serialize JSON");
continue;
}
};
let cursor = Cursor::new(json_data);
let engine_lock = engine.read().await;
let schema = engine_lock.schema();
drop(engine_lock);
let reader = match ReaderBuilder::new(schema.clone()).build(cursor) {
Ok(r) => r,
Err(e) => {
error!(error = %e, "Failed to create JSON reader");
continue;
}
};
for batch_result in reader {
match batch_result {
Ok(batch) => {
let mut engine_lock = engine.write().await;
if let Err(e) = engine_lock.process_batch(&batch).await {
error!(error = %e, "Failed to process batch from WebSocket");
}
}
Err(e) => {
error!(error = %e, "Failed to read batch from WebSocket message");
}
}
}
}
Err(e) => {
error!(error = %e, "Failed to parse WebSocket binary as JSON");
}
}
}
Ok(Message::Close(_)) => {
info!("WebSocket connection closed");
break;
}
Ok(Message::Ping(data)) => {
// Respond with pong
if sender.send(Message::Pong(data)).await.is_err() {
break;
}
}
Ok(Message::Pong(_)) => {
// Ignore pong
}
Ok(Message::Frame(_)) => {
// Ignore frames
}
Err(e) => {
error!(error = %e, "WebSocket error");
break;
}
}
}
info!("WebSocket connection ended");
Ok(())
}