chore: rename drain_filter to extract_if

sync w/ upstream

References:
* rust-lang/rust#104455
* rust-lang/rust#70530

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

Author: rwestphal

holo-northbound/src/configuration.rs

@@ -663,7 +663,7 @@ where
     // Move to a separate vector the changes that need to be relayed.
     let callbacks = P::callbacks().unwrap();
     let relayed_changes = changes
-        .drain_filter(|(cb_key, _)| callbacks.0.get(cb_key).is_none())
+        .extract_if(|(cb_key, _)| callbacks.0.get(cb_key).is_none())
         .collect();
 
     // Process local changes.

holo-northbound/src/lib.rs

@@ -4,7 +4,7 @@
 // See LICENSE for license details.
 //
 
-#![feature(drain_filter)]
+#![feature(extract_if)]
 #![warn(rust_2018_idioms)]
 #![allow(type_alias_bounds)]
 #![allow(clippy::too_many_arguments)]

holo-ospf/src/events.rs

@@ -1266,7 +1266,7 @@ where
     // retransmission lists.
     for lse_idx in lsdb
         .maxage_lsas
-        .drain_filter(|lse_idx| {
+        .extract_if(|lse_idx| {
             let lse = &arenas.lsa_entries[*lse_idx];
             !arenas.neighbors.iter().any(|(_, nbr)| {
                 nbr.lists

holo-ospf/src/lib.rs

@@ -11,7 +11,7 @@
 )]
 #![allow(clippy::single_match, clippy::too_many_arguments)]
 #![allow(type_alias_bounds)]
-#![feature(btree_drain_filter, hash_drain_filter, ip, let_chains, lazy_cell)]
+#![feature(btree_extract_if, hash_extract_if, ip, let_chains, lazy_cell)]
 
 pub mod area;
 pub mod collections;

holo-ospf/src/route.rs

@@ -209,7 +209,7 @@ pub(crate) fn update_rib_partial<V>(
     // Check for intra-area changes.
     if !partial.intra.is_empty() {
         // Remove affected intra-area routes from the RIB.
-        old_rib.extend(rib.drain_filter(|prefix, route| {
+        old_rib.extend(rib.extract_if(|prefix, route| {
             partial.intra.contains(prefix)
                 && route.path_type == PathType::IntraArea
         }));
@@ -235,7 +235,7 @@ pub(crate) fn update_rib_partial<V>(
     // Check for inter-area changes.
     if !partial.inter_network.is_empty() {
         // Remove affected inter-area routes from the RIB.
-        old_rib.extend(rib.drain_filter(|prefix, route| {
+        old_rib.extend(rib.extract_if(|prefix, route| {
             partial.inter_network.contains(prefix)
                 && route.path_type == PathType::InterArea
         }));
@@ -273,7 +273,7 @@ pub(crate) fn update_rib_partial<V>(
             }
 
             // Remove affected inter-area routes from the routers RIB.
-            area.state.routers.drain_filter(|router_id, route| {
+            let _ = area.state.routers.extract_if(|router_id, route| {
                 partial.inter_router.contains(router_id)
                     && route.path_type == PathType::InterArea
             });
@@ -294,7 +294,7 @@ pub(crate) fn update_rib_partial<V>(
         let reevaluate_all = !partial.inter_router.is_empty();
 
         // Remove affected external routes from the RIB.
-        old_rib.extend(rib.drain_filter(|prefix, route| {
+        old_rib.extend(rib.extract_if(|prefix, route| {
             (reevaluate_all || partial.external.contains(prefix))
                 && matches!(
                     route.path_type,