Added cluster version to api (#609)

kafka-ui-api/src/main/java/com/provectus/kafka/ui/model/ExtendedAdminClient.java

@@ -15,6 +15,7 @@ public class ExtendedAdminClient {
   private final Set<SupportedFeature> supportedFeatures;
 
   public static Mono<ExtendedAdminClient> extendedAdminClient(AdminClient adminClient) {
+
     return ClusterUtil.getSupportedFeatures(adminClient)
         .map(s -> new ExtendedAdminClient(adminClient, s));
   }

kafka-ui-api/src/main/java/com/provectus/kafka/ui/model/KafkaCluster.java

@@ -11,6 +11,7 @@ import lombok.Data;
 @Builder(toBuilder = true)
 public class KafkaCluster {
   private final String name;
+  private final String version;
   private final Integer jmxPort;
   private final String bootstrapServers;
   private final String zookeeper;

kafka-ui-api/src/main/java/com/provectus/kafka/ui/service/KafkaService.java

@@ -104,13 +104,16 @@ public class KafkaService {
   public Mono<KafkaCluster> getUpdatedCluster(KafkaCluster cluster) {
     return getOrCreateAdminClient(cluster)
         .flatMap(
-            ac -> getClusterMetrics(ac.getAdminClient())
-                .flatMap(i -> fillJmxMetrics(i, cluster.getName(), ac.getAdminClient()))
-                .flatMap(clusterMetrics ->
-                    getTopicsData(ac.getAdminClient()).flatMap(it ->
-                        updateSegmentMetrics(ac.getAdminClient(), clusterMetrics, it)
-                    ).map(segmentSizeDto -> buildFromData(cluster, segmentSizeDto))
-                )
+            ac -> ClusterUtil.getClusterVersion(ac.getAdminClient()).flatMap(
+                version ->
+                    getClusterMetrics(ac.getAdminClient())
+                        .flatMap(i -> fillJmxMetrics(i, cluster.getName(), ac.getAdminClient()))
+                        .flatMap(clusterMetrics ->
+                            getTopicsData(ac.getAdminClient()).flatMap(it ->
+                                updateSegmentMetrics(ac.getAdminClient(), clusterMetrics, it)
+                            ).map(segmentSizeDto -> buildFromData(cluster, version, segmentSizeDto))
+                        )
+            )
         ).onErrorResume(
             e -> Mono.just(cluster.toBuilder()
                 .status(ServerStatus.OFFLINE)
@@ -120,6 +123,7 @@ public class KafkaService {
   }
 
   private KafkaCluster buildFromData(KafkaCluster currentCluster,
+                                     String version,
                                      InternalSegmentSizeDto segmentSizeDto) {
 
     var topics = segmentSizeDto.getInternalTopicWithSegmentSize();
@@ -152,6 +156,7 @@ public class KafkaService {
         .build();
 
     return currentCluster.toBuilder()
+        .version(version)
         .status(ServerStatus.ONLINE)
         .zookeeperStatus(zookeeperStatus)
         .lastZookeeperException(zookeeperException)

kafka-ui-api/src/main/java/com/provectus/kafka/ui/util/ClusterUtil.java

@@ -237,23 +237,12 @@ public class ClusterUtil {
 
   public static Mono<Set<ExtendedAdminClient.SupportedFeature>> getSupportedFeatures(
       AdminClient adminClient) {
-    return ClusterUtil.toMono(adminClient.describeCluster().controller())
-        .map(Node::id)
-        .map(id -> Collections
-            .singletonList(new ConfigResource(ConfigResource.Type.BROKER, id.toString())))
-        .map(brokerCR -> adminClient.describeConfigs(brokerCR).all())
-        .flatMap(ClusterUtil::toMono)
+    return getClusterVersion(adminClient)
         .map(ClusterUtil::getSupportedUpdateFeature)
         .map(Collections::singleton);
   }
 
-  private static ExtendedAdminClient.SupportedFeature getSupportedUpdateFeature(
-      Map<ConfigResource, Config> configs) {
-    String version = configs.values().stream()
-        .map(Config::entries)
-        .flatMap(Collection::stream)
-        .filter(entry -> entry.name().contains(CLUSTER_VERSION_PARAM_KEY))
-        .findFirst().orElseThrow().value();
+  private static ExtendedAdminClient.SupportedFeature getSupportedUpdateFeature(String version) {
     try {
       final String[] parts = version.split("\\.");
       if (parts.length > 2) {
@@ -268,6 +257,25 @@ public class ClusterUtil {
     }
   }
 
+  public static Mono<String> getClusterVersion(AdminClient adminClient) {
+    return ClusterUtil.toMono(adminClient.describeCluster().controller())
+        .map(Node::id)
+        .map(id -> Collections
+            .singletonList(new ConfigResource(ConfigResource.Type.BROKER, id.toString())))
+        .map(brokerCR -> adminClient.describeConfigs(brokerCR).all())
+        .flatMap(ClusterUtil::toMono)
+        .map(ClusterUtil::getClusterVersion);
+  }
+
+  public static String getClusterVersion(Map<ConfigResource, Config> configs) {
+    return configs.values().stream()
+        .map(Config::entries)
+        .flatMap(Collection::stream)
+        .filter(entry -> entry.name().contains(CLUSTER_VERSION_PARAM_KEY))
+        .findFirst().orElseThrow().value();
+  }
+
+
   public static <T, R> Map<T, R> toSingleMap(Stream<Map<T, R>> streamOfMaps) {
     return streamOfMaps
         .reduce((map1, map2) -> Stream.concat(map1.entrySet().stream(), map2.entrySet().stream())

kafka-ui-contract/src/main/resources/swagger/kafka-ui-api.yaml

@@ -1281,6 +1281,8 @@ components:
           type: number
         readOnly:
           type: boolean
+        version:
+          type: string
         features:
           type: array
           items: