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[Rust] Test Arrow mux lifecycle #867

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[Rust] Test Arrow mux lifecycle #867

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49 changes: 39 additions & 10 deletions rust/tests/src/mock_arrow_flight.rs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
//! Mock Arrow Flight server for testing the Arrow Flight SDK functionality.

use std::collections::HashMap;
use std::collections::{HashMap, VecDeque};
use std::pin::Pin;
use std::sync::atomic::{AtomicU64, Ordering};
use std::sync::Arc;
Expand Down Expand Up @@ -152,6 +152,8 @@ pub enum MockFlightResponse {
pub struct MockFlightServer {
/// Responses to inject for each table
responses: Arc<Mutex<HashMap<String, Vec<MockFlightResponse>>>>,
/// Optional scripts consumed once per DoPut, for independent mux lanes/reconnects.
connection_scripts: Arc<Mutex<HashMap<String, VecDeque<Vec<MockFlightResponse>>>>>,
connection_count: Arc<AtomicU64>,
/// Track the maximum offset received from clients
max_offset_received: Arc<Mutex<i64>>,
Expand Down Expand Up @@ -188,6 +190,7 @@ impl MockFlightServer {
pub fn new() -> Self {
Self {
responses: Arc::new(Mutex::new(HashMap::new())),
connection_scripts: Arc::new(Mutex::new(HashMap::new())),
connection_count: Arc::new(AtomicU64::new(0)),
max_offset_received: Arc::new(Mutex::new(-1)),
batch_count: Arc::new(Mutex::new(0)),
Expand Down Expand Up @@ -227,6 +230,17 @@ impl MockFlightServer {
indices.insert(table_name.to_string(), 0);
}

pub async fn inject_connection_scripts(
&self,
table: &str,
scripts: Vec<Vec<MockFlightResponse>>,
) {
self.connection_scripts
.lock()
.await
.insert(table.into(), scripts.into());
}

pub fn connection_count(&self) -> u64 {
self.connection_count.load(Ordering::Relaxed)
}
Expand Down Expand Up @@ -378,7 +392,18 @@ impl FlightService for MockFlightServer {
let mut stream = request.into_inner();
let (tx, rx) = mpsc::channel(100);

self.connection_count.fetch_add(1, Ordering::Relaxed);
let connection_id = self.connection_count.fetch_add(1, Ordering::Relaxed);
let connection_script = self
.connection_scripts
.lock()
.await
.get_mut(&table_name)
.and_then(VecDeque::pop_front);
let response_key = if connection_script.is_some() {
format!("{table_name}#connection-{connection_id}")
} else {
table_name.clone()
};
let responses = Arc::clone(&self.responses);
let max_offset_received = Arc::clone(&self.max_offset_received);
let batch_count = Arc::clone(&self.batch_count);
Expand Down Expand Up @@ -419,9 +444,12 @@ impl FlightService for MockFlightServer {
}
}

if let Some(script) = connection_script {
stream_responses = script;
}
let mut response_index = {
let indices = response_indices.lock().await;
*indices.get(&table_name).unwrap_or(&0)
*indices.get(&response_key).unwrap_or(&0)
};

let clean_request_eof = loop {
Expand Down Expand Up @@ -483,7 +511,7 @@ impl FlightService for MockFlightServer {
response_index += 1;
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
if delay_ms > 0 {
delayed_setup_armed.notify_one();
Expand Down Expand Up @@ -634,7 +662,7 @@ impl FlightService for MockFlightServer {
// Update response index
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
}
}
Expand All @@ -653,7 +681,7 @@ impl FlightService for MockFlightServer {
// Save response index before returning so next connection continues from here
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
let _ = tx.send(Err(status.clone())).await;
return;
Expand All @@ -665,7 +693,7 @@ impl FlightService for MockFlightServer {
response_index += 1;
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
let _ = tx.send(Err(status)).await;
return;
Expand All @@ -679,7 +707,7 @@ impl FlightService for MockFlightServer {
response_index += 1;
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
let _ = tx.send(Err(status)).await;
return;
Expand All @@ -694,7 +722,7 @@ impl FlightService for MockFlightServer {
// Save response index before returning so next connection continues from here
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
return;
}
Expand Down Expand Up @@ -731,7 +759,7 @@ impl FlightService for MockFlightServer {
response_index += 1;
{
let mut indices = response_indices.lock().await;
indices.insert(table_name.clone(), response_index);
indices.insert(response_key.clone(), response_index);
}
// Continue processing - the main loop waits for more batches.
// During grace period the client won't send new batches,
Expand Down Expand Up @@ -865,6 +893,7 @@ async fn start_mock_flight_server_inner(
let mock_server = MockFlightServer::new();
let server_clone = MockFlightServer {
responses: Arc::clone(&mock_server.responses),
connection_scripts: Arc::clone(&mock_server.connection_scripts),
connection_count: Arc::clone(&mock_server.connection_count),
max_offset_received: Arc::clone(&mock_server.max_offset_received),
batch_count: Arc::clone(&mock_server.batch_count),
Expand Down
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