chore(clippy): disallow some methods from itertools (#2075)

easytier/.clippy.toml

@@ -0,0 +1,11 @@
+disallowed-methods = [
+    { path = "itertools::Itertools::map_into", reason = "Blocks underlying iterator optimizations. Use the native `.map(Into::into)` instead." },
+    { path = "itertools::Itertools::map_ok", reason = "Blocks underlying iterator optimizations. Use the native `.map(|r| r.map(f))` instead." },
+    { path = "itertools::Itertools::filter_ok", reason = "Blocks underlying iterator optimizations. Use a native approach, e.g., `.filter(|r| r.as_ref().map_or(true, condition))`." },
+    { path = "itertools::Itertools::filter_map_ok", reason = "Blocks underlying iterator optimizations. Use native `.map()` and `.flatten()`, or extract logic into a standard `.filter_map()`." },
+
+    { path = "itertools::Itertools::collect_vec", reason = "Non-standard idiom. Directly use the standard library's `.collect::<Vec<_>>()`." },
+    { path = "itertools::Itertools::try_collect", reason = "Non-standard idiom. Standard `collect()` already supports Result/Option inversion; use `.collect::<Result<_, _>>()`." },
+    { path = "itertools::Itertools::set_from", reason = "Non-standard idiom. Directly use the `.extend()` method provided by the standard library's `Extend` trait." },
+    { path = "itertools::Itertools::concat", reason = "Non-standard idiom. Use native `.flatten().collect()` or a slice's `.concat()` instead." }
+]

easytier/src/connector/dns_connector.rs

@@ -14,7 +14,6 @@ use crate::{
 use anyhow::Context;
 use dashmap::DashSet;
 use hickory_resolver::proto::rr::rdata::SRV;
-use itertools::Itertools;
 use rand::{seq::SliceRandom, Rng as _};
 use strum::VariantArray;
 
@@ -117,7 +116,7 @@ impl DnsTunnelConnector {
         let srv_domains = IpScheme::VARIANTS
             .iter()
             .map(|s| (s, format!("_easytier._{}.{}", s, domain_name)))
-            .collect_vec();
+            .collect::<Vec<_>>();
         tracing::info!("build srv_domains: {:?}", srv_domains);
         let responses = Arc::new(DashSet::new());
         let srv_lookup_tasks = srv_domains

easytier/src/peers/peer_ospf_route.rs

@@ -71,7 +71,6 @@ use super::{
 };
 
 use atomic_shim::AtomicU64;
-use itertools::Itertools;
 
 static SERVICE_ID: u32 = 7;
 static UPDATE_PEER_INFO_PERIOD: Duration = Duration::from_secs(3600);
@@ -1327,7 +1326,7 @@ impl RouteTable {
             .into_iter()
             .flat_map(|info| &info.proxy_cidrs)
             .filter_map(|cidr| cidr.parse::<IpCidr>().ok())
-            .collect_vec();
+            .collect::<Vec<_>>();
 
         // build next hop map
         let (graph, start_node) =