Put feature cfg on flight imports

src/frontend/flight/sql.rs

@@ -84,7 +84,7 @@ impl FlightSqlService for SeafowlFlightHandler {
 
         let flight_info = FlightInfo::new()
             .try_with_schema(&schema)
-            .expect("encoding schema")
+            .map_err(|e| Status::internal(e.to_string()))?
             .with_endpoint(endpoint)
             .with_descriptor(request.into_inner());
 

src/main.rs

@@ -12,6 +12,7 @@ use clap::Parser;
 use futures::{future::join_all, Future, FutureExt};
 
 use pretty_env_logger::env_logger;
+#[cfg(feature = "frontend-arrow-flight")]
 use seafowl::frontend::flight::run_flight_server;
 use seafowl::{
     cli,

tests/flight/client.rs

@@ -35,9 +35,8 @@ async fn test_basic_queries() -> Result<()> {
         .clone()
         .expect("expected ticket");
 
-    // Retrieve the corresponding Flight stream with do_get
+    // Retrieve the corresponding Flight stream and collect into batches
     let flight_stream = client.do_get(ticket).await.expect("error fetching data");
-
     let results: Vec<RecordBatch> = flight_stream.try_collect().await?;
 
     let expected = [

tests/main.rs

@@ -2,6 +2,7 @@
 // https://endler.dev/2020/rust-compile-times/#combine-all-integration-tests-in-a-single-binary
 
 mod cli;
+#[cfg(feature = "frontend-arrow-flight")]
 mod flight;
 mod http;
 mod statements;