feat: add support for setting multiple address

I did it like this, due to the fact that it would have been a pain
to work out syntax for labels.
So I moved the url to annotations

Cargo.lock

@@ -745,6 +745,15 @@ dependencies = [
  "hashbrown 0.16.1",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.15"
@@ -970,6 +979,7 @@ dependencies = [
  "either",
  "evalexpr",
  "futures",
+ "itertools",
  "k8s-openapi",
  "kube",
  "nix",

Cargo.toml

@@ -43,3 +43,4 @@ strip-ansi-escapes = "0.2.1"
 evalexpr = { version = "13.1.0", features = ["regex"] }
 async-trait = "0.1.89"
 tokio-util = { version = "0.7.18", features = ["rt"] }
+itertools = "0.14.0"

src/kube_cache.rs

@@ -2,6 +2,7 @@ use std::{collections::HashMap, fmt, sync::Arc, time::Duration};
 
 use async_trait::async_trait;
 use futures::StreamExt;
+use itertools::Itertools;
 use k8s_openapi::api::{apps::v1::Deployment, core::v1::Service};
 use kube::{
     api::{ListParams, ObjectList, Patch, PatchParams},
@@ -347,15 +348,28 @@ fn filter_label_value<R>(res: &R, addr: &str, port: &str) -> bool
 where
     R: ResourceExt,
 {
+    let labels_iter = res.labels().iter();
+    let annotations_iter = res.annotations().iter();
+    let iters = labels_iter.merge(annotations_iter);
+
     let mut found_port = false;
-    res.labels()
+    iters
-        .iter()
         .filter(|(key, value)| match key.as_str() {
             MAIN_LABEL => value.as_str() == addr,
             PORT_LABEL => {
                 found_port = true;
                 value.as_str() == port
             }
+            URL_ANNOTATION => value
+                .lines()
+                .find(|str| {
+                    if str.find(':').is_some() {
+                        str == &format!("{addr}:{port}").as_str()
+                    } else {
+                        str == &addr
+                    }
+                })
+                .is_some(),
             _ => false,
         })
         .count()