[COMMON] rewrite admin.Config by java 17 record

common/src/main/java/org/astraea/common/ByteUtils.java

@@ -341,7 +341,7 @@ public String name() {
 
                         @Override
                         public Config config() {
-                          return Config.of(protoTopic.getConfigMap());
+                          return new Config(protoTopic.getConfigMap());
                         }
 
                         @Override

common/src/main/java/org/astraea/common/admin/Broker.java

@@ -31,7 +31,7 @@ static Broker of(
       Map<String, String> configs,
       Map<String, DescribeLogDirsResponse.LogDirInfo> dirs,
       Collection<org.apache.kafka.clients.admin.TopicDescription> topics) {
-    var config = Config.of(configs);
+    var config = new Config(configs);
     var partitionsFromTopicDesc =
         topics.stream()
             .flatMap(

common/src/main/java/org/astraea/common/admin/Config.java

@@ -20,28 +20,14 @@
 import java.util.Optional;
 
 /** this interface used to represent the resource (topic or broker) configuration. */
-public interface Config {
+public record Config(Map<String, String> raw) {
 
-  Config EMPTY = Config.of(Map.of());
-
-  static Config of(Map<String, String> configs) {
-    return new Config() {
-      @Override
-      public Map<String, String> raw() {
-        return configs;
-      }
-
-      @Override
-      public Optional<String> value(String key) {
-        return Optional.ofNullable(configs.get(key));
-      }
-    };
-  }
-
-  Map<String, String> raw();
+  public static final Config EMPTY = new Config(Map.of());
   /**
    * @param key config key
    * @return the value associated to input key. otherwise, empty
    */
-  Optional<String> value(String key);
+  public Optional<String> value(String key) {
+    return Optional.ofNullable(raw.get(key));
+  }
 }

common/src/main/java/org/astraea/common/admin/Topic.java

@@ -27,7 +27,7 @@ static Topic of(
       org.apache.kafka.clients.admin.TopicDescription topicDescription,
       Map<String, String> kafkaConfig) {
 
-    var config = Config.of(kafkaConfig);
+    var config = new Config(kafkaConfig);
     var topicPartitions =
         topicDescription.partitions().stream()
             .map(p -> TopicPartition.of(name, p.partition()))