From 9ac6cd5c79e094fdcd8f99564e1ce879e2f876ac Mon Sep 17 00:00:00 2001
From: Chia-Ping Tsai <chia7712@gmail.com>
Date: Sat, 13 May 2023 21:23:28 +0800
Subject: [PATCH] [METRICS] rewrite ClusterMetrics.PartitionMetric by java 17
 record

---
 .../common/metrics/broker/ClusterMetrics.java    | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/common/src/main/java/org/astraea/common/metrics/broker/ClusterMetrics.java b/common/src/main/java/org/astraea/common/metrics/broker/ClusterMetrics.java
index 1292b24901..0e1983aca9 100644
--- a/common/src/main/java/org/astraea/common/metrics/broker/ClusterMetrics.java
+++ b/common/src/main/java/org/astraea/common/metrics/broker/ClusterMetrics.java
@@ -76,23 +76,11 @@ public static ClusterMetrics.Partition ofAlias(String alias) {
     }
 
     public List<PartitionMetric> fetch(MBeanClient client) {
-      return client.beans(ALL.get(this)).stream()
-          .map(PartitionMetric::new)
-          .collect(Collectors.toUnmodifiableList());
+      return client.beans(ALL.get(this)).stream().map(PartitionMetric::new).toList();
     }
   }
 
-  public static class PartitionMetric implements HasGauge<Integer> {
-    private final BeanObject beanObject;
-
-    public PartitionMetric(BeanObject beanObject) {
-      this.beanObject = beanObject;
-    }
-
-    @Override
-    public BeanObject beanObject() {
-      return beanObject;
-    }
+  public record PartitionMetric(BeanObject beanObject) implements HasGauge<Integer> {
 
     public TopicPartition topicPartition() {
       return partitionIndex().orElseThrow();