From 67b88547c5dddb7f72d072352ad1d63f88cb5587 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 22 Sep 2022 08:57:34 -0400
Subject: [PATCH] CircMgr: Add an accessor for the CircuitBuilder.

Without this, actually building circuits manually is a pain.

This API is behind the `experimental-api` feature, and so it does
not require a semver.md entry.
---
 crates/tor-circmgr/src/lib.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crates/tor-circmgr/src/lib.rs b/crates/tor-circmgr/src/lib.rs
index 4fcb7c53e..b357a1050 100644
--- a/crates/tor-circmgr/src/lib.rs
+++ b/crates/tor-circmgr/src/lib.rs
@@ -498,6 +498,14 @@ impl<R: Runtime> CircMgr<R> {
         }
     }
 
+    /// Return a reference to the associated CircuitBuilder that this CircMgr
+    /// will use to create its circuits.
+    #[cfg_attr(docsrs, doc(cfg(feature = "experimental-api")))]
+    #[cfg(feature = "experimental-api")]
+    pub fn builder(&self) -> &build::CircuitBuilder<R> {
+        self.mgr.peek_builder()
+    }
+
     /// If `circ_id` is the unique identifier for a circuit that we're
     /// keeping track of, don't give it out for any future requests.
     pub fn retire_circ(&self, circ_id: &UniqId) {