add missing file

robtandy · robtandy · commit 4f836d90ceb1 · 2025-07-15T09:32:36.000-04:00
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -67,7 +67,7 @@ rustls = "0.23"
 test-log = "0.2"
 thiserror = "1.0"
 
-tokio = { version = "1.0", features = ["full"] }
+tokio = { version = "1.46", features = ["full"] }
 tokio-stream = { version = "0.1", features = ["full"] }
 
 tonic = { version = "0.12", default-features = false, features = [
diff --git a/src/ctx_customizer.rs b/src/ctx_customizer.rs
@@ -0,0 +1,6 @@
+use datafusion::prelude::SessionContext;
+
+pub trait CtxCustomizer {
+    /// Customize the context before planning a a query.
+    fn customize(&self, ctx: &mut SessionContext) -> Result<(), Box<dyn std::error::Error>>;
+}
