Ignore interior mutability of Resource

clippy.toml

@@ -0,0 +1,6 @@
+# NOTE: Resources are hashed using their `.suffix` field without using any interior mutable fields.
+# See https://github.com/eclipse-zenoh/zenoh/blob/b55c781220d7ea9f7f117570990f6e4e063e58fe/zenoh/src/net/routing/dispatcher/resource.rs#L193
+# A corresponding comment is present in the `Hash` implementation of `Ressource` as a reminder that this configuration is set.
+ignore-interior-mutability = [
+    "zenoh::net::routing::dispatcher::resource::Resource",
+]

zenoh/src/net/routing/dispatcher/resource.rs

@@ -188,6 +188,10 @@ impl PartialEq for Resource {
 }
 impl Eq for Resource {}
 
+// NOTE: The `clippy::mutable_key_type` lint takes issue with the fact that `Resource` contains
+// interior mutable data. A configuration option is used to assert that the accessed fields are
+// not interior mutable in clippy.toml. Thus care should be taken to ensure soundness of this impl
+// as Clippy will not warn about its usage in sets/maps.
 impl Hash for Resource {
     fn hash<H: Hasher>(&self, state: &mut H) {
         self.expr().hash(state);