[KIP-430] DescribeConsumerGroups, DescribeTopics, DescribeCluster with authorized AclOperations

CHANGELOG.md

@@ -1,9 +1,13 @@
-# vNext
+# 2.3.0
 
 ## Enhancements
 
+- References librdkafka.redist 2.3.0. Refer to the [librdkafka v2.3.0 release notes](https://github.com/confluentinc/librdkafka/releases/tag/v2.3.0) for more information.
 - Added support for external JSON schemas in `JsonSerializer` and `JsonDeserializer` (#2042).
 - Added compatibility methods to CachedSchemaRegistryClient ([ISBronny](https://github.com/ISBronny), #2097).
+- Add support for AdminAPI `DescribeCluster()` and `DescribeTopics()` (#2021, @jainruchir).
+- [KIP-430](https://cwiki.apache.org/confluence/display/KAFKA/KIP-430+-+Return+Authorized+Operations+in+Describe+Responses):
+  Return authorized operations in describe responses (#2021, @jainruchir).
 
 
 # 2.2.0

examples/AdminClient/Program.cs

@@ -1,4 +1,5 @@
-// Copyright 2016-2017 Confluent Inc., 2015-2016 Andreas Heider
+// Copyright 2015-2016 Andreas Heider,
+//           2016-2023 Confluent Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -525,7 +526,8 @@ static async Task ListConsumerGroupsAsync(string bootstrapServers, string[] comm
             {
                 try
                 {
-                    var result = await adminClient.ListConsumerGroupsAsync(new ListConsumerGroupsOptions() { 
+                    var result = await adminClient.ListConsumerGroupsAsync(new ListConsumerGroupsOptions()
+                    { 
                         RequestTimeout = timeout,
                         MatchStates = statesList,
                     });
@@ -546,23 +548,52 @@ static async Task ListConsumerGroupsAsync(string bootstrapServers, string[] comm
 
         static async Task DescribeConsumerGroupsAsync(string bootstrapServers, string[] commandArgs)
         {
-            if (commandArgs.Length < 1)
+            if (commandArgs.Length < 3)
             {
-                Console.WriteLine("usage: .. <bootstrapServers> describe-consumer-groups <group1> [<group2 ... <groupN>]");
+                Console.WriteLine("usage: .. <bootstrapServers> describe-consumer-groups <username> <password> <include_authorized_operations> <group1> [<group2 ... <groupN>]");
                 Environment.ExitCode = 1;
                 return;
             }
 
-            var groupNames = commandArgs.ToList();
+            var username = commandArgs[0];
+            var password = commandArgs[1];
+            var includeAuthorizedOperations = (commandArgs[2] == "1");
+            var groupNames = commandArgs.Skip(3).ToList();
+
+            if (string.IsNullOrWhiteSpace(username))
+            {
+                username = null;
+            }
+            if (string.IsNullOrWhiteSpace(password))
+            {
+                password = null;
+            }
+
             var timeout = TimeSpan.FromSeconds(30);
-            using (var adminClient = new AdminClientBuilder(new AdminClientConfig { BootstrapServers = bootstrapServers }).Build())
+            var config = new AdminClientConfig
+            {
+                BootstrapServers = bootstrapServers,
+            };
+            if (username != null && password != null)
+            {
+                config = new AdminClientConfig
+                {
+                    BootstrapServers = bootstrapServers,
+                    SecurityProtocol = SecurityProtocol.SaslPlaintext,
+                    SaslMechanism = SaslMechanism.Plain,
+                    SaslUsername = username,
+                    SaslPassword = password,
+                };
+            }
+
+            using (var adminClient = new AdminClientBuilder(config).Build())
             {
                 try
                 {
-                    var descResult = await adminClient.DescribeConsumerGroupsAsync(groupNames, new DescribeConsumerGroupsOptions() { RequestTimeout = timeout });
+                    var descResult = await adminClient.DescribeConsumerGroupsAsync(groupNames, new DescribeConsumerGroupsOptions() { RequestTimeout = timeout , IncludeAuthorizedOperations = includeAuthorizedOperations});
                     foreach (var group in descResult.ConsumerGroupDescriptions)
                     {
-                        Console.WriteLine($"  Group: {group.GroupId} {group.Error}");
+                        Console.WriteLine($"\n  Group: {group.GroupId} {group.Error}");
                         Console.WriteLine($"  Broker: {group.Coordinator}");
                         Console.WriteLine($"  IsSimpleConsumerGroup: {group.IsSimpleConsumerGroup}");
                         Console.WriteLine($"  PartitionAssignor: {group.PartitionAssignor}");
@@ -579,6 +610,11 @@ static async Task DescribeConsumerGroupsAsync(string bootstrapServers, string[]
                             }
                             Console.WriteLine($"      TopicPartitions: [{topicPartitions}]");
                         }
+                        if (includeAuthorizedOperations)
+                        {
+                            string operations = string.Join(" ", group.AuthorizedOperations);
+                            Console.WriteLine($"  Authorized operations: {operations}");
+                        }
                     }
                 }
                 catch (KafkaException e)
@@ -757,6 +793,162 @@ await adminClient.AlterUserScramCredentialsAsync(alterations,
             }
         }
 
+        static void PrintTopicDescriptions(List<TopicDescription> topicDescriptions, bool includeAuthorizedOperations)
+        {
+            foreach (var topic in topicDescriptions)
+            {
+                Console.WriteLine($"\n  Topic: {topic.Name} {topic.Error}");
+                Console.WriteLine($"  Partitions:");
+                foreach (var partition in topic.Partitions)
+                {
+                    Console.WriteLine($"    Partition ID: {partition.Partition} with leader: {partition.Leader}");
+                    if(!partition.ISR.Any())
+                    {
+                        Console.WriteLine("      There is no In-Sync-Replica broker for the partition");
+                    }
+                    else
+                    {
+                        string isrs = string.Join("; ", partition.ISR);
+                        Console.WriteLine($"      The In-Sync-Replica brokers are: {isrs}");
+                    }
+
+                    if(!partition.Replicas.Any())
+                    {
+                        Console.WriteLine("      There is no Replica broker for the partition");
+                    }
+                    else
+                    {
+                        string replicas = string.Join("; ", partition.Replicas);
+                        Console.WriteLine($"      The Replica brokers are: {replicas}");
+                    }
+
+                }
+                Console.WriteLine($"  Is internal: {topic.IsInternal}");
+                if (includeAuthorizedOperations)
+                {
+                    string operations = string.Join(" ", topic.AuthorizedOperations);
+                    Console.WriteLine($"  Authorized operations: {operations}");
+                }
+            }
+        }
+
+        static async Task DescribeTopicsAsync(string bootstrapServers, string[] commandArgs)
+        {
+            if (commandArgs.Length < 3)
+            {
+                Console.WriteLine("usage: .. <bootstrapServers> describe-topics <username> <password> <include_authorized_operations> <topic1> [<topic2 ... <topicN>]");
+                Environment.ExitCode = 1;
+                return;
+            }
+
+            var username = commandArgs[0];
+            var password = commandArgs[1];
+            var includeAuthorizedOperations = (commandArgs[2] == "1");
+            if (string.IsNullOrWhiteSpace(username))
+            {
+                username = null;
+            }
+            if (string.IsNullOrWhiteSpace(password))
+            {
+                password = null;
+            }
+            var topicNames = commandArgs.Skip(3).ToList();
+
+            var timeout = TimeSpan.FromSeconds(30);
+            var config = new AdminClientConfig
+            {
+                BootstrapServers = bootstrapServers,
+            };
+            if (username != null && password != null)
+            {
+                config = new AdminClientConfig
+                {
+                    BootstrapServers = bootstrapServers,
+                    SecurityProtocol = SecurityProtocol.SaslPlaintext,
+                    SaslMechanism = SaslMechanism.Plain,
+                    SaslUsername = username,
+                    SaslPassword = password,
+                };
+            }
+
+            using (var adminClient = new AdminClientBuilder(config).Build())
+            {
+                try
+                {
+                    var descResult = await adminClient.DescribeTopicsAsync(
+                        TopicCollection.OfTopicNames(topicNames),
+                        new DescribeTopicsOptions() { RequestTimeout = timeout , IncludeAuthorizedOperations = includeAuthorizedOperations});
+                    PrintTopicDescriptions(descResult.TopicDescriptions, includeAuthorizedOperations);
+                }
+                catch (DescribeTopicsException e)
+                {
+                    // At least one TopicDescription will have an error.
+                    PrintTopicDescriptions(e.Results.TopicDescriptions, includeAuthorizedOperations);
+                }
+                catch (KafkaException e)
+                {
+                    Console.WriteLine($"An error occurred describing topics: {e}");
+                    Environment.ExitCode = 1;
+                }
+            }
+        }
+
+        static async Task DescribeClusterAsync(string bootstrapServers, string[] commandArgs)
+        {
+            if (commandArgs.Length < 3)
+            {
+                Console.WriteLine("usage: .. <bootstrapServers> describe-cluster <username> <password> <include_authorized_operations>");
+                Environment.ExitCode = 1;
+                return;
+            }
+
+            var username = commandArgs[0];
+            var password = commandArgs[1];
+            var includeAuthorizedOperations = (commandArgs[2] == "1");
+
+            var timeout = TimeSpan.FromSeconds(30);
+            var config = new AdminClientConfig
+            {
+                BootstrapServers = bootstrapServers,
+            };
+            if (username != null && password != null)
+            {
+                config = new AdminClientConfig
+                {
+                    BootstrapServers = bootstrapServers,
+                    SecurityProtocol = SecurityProtocol.SaslPlaintext,
+                    SaslMechanism = SaslMechanism.Plain,
+                    SaslUsername = username,
+                    SaslPassword = password,
+                };
+            }
+
+            using (var adminClient = new AdminClientBuilder(config).Build())
+            {
+                try
+                {
+                    var descResult = await adminClient.DescribeClusterAsync(new DescribeClusterOptions() { RequestTimeout = timeout , IncludeAuthorizedOperations = includeAuthorizedOperations});
+
+                    Console.WriteLine($"  Cluster Id: {descResult.ClusterId}\n  Controller: {descResult.Controller}");
+                    Console.WriteLine("  Nodes:");
+                    foreach(var node in descResult.Nodes)
+                    {
+                        Console.WriteLine($"    {node}");
+                    }
+                    if (includeAuthorizedOperations)
+                    {
+                        string operations = string.Join(" ", descResult.AuthorizedOperations);
+                        Console.WriteLine($"  Authorized operations: {operations}");
+                    }
+                }
+                catch (KafkaException e)
+                {
+                    Console.WriteLine($"An error occurred describing cluster: {e}");
+                    Environment.ExitCode = 1;
+                }
+            }
+        }
+
         public static async Task Main(string[] args)
         {
             if (args.Length < 2)
@@ -768,8 +960,8 @@ public static async Task Main(string[] args)
                         "list-consumer-groups", "describe-consumer-groups",
                         "list-consumer-group-offsets", "alter-consumer-group-offsets",
                         "incremental-alter-configs", "describe-user-scram-credentials", 
-                        "alter-user-scram-credentials"
-
+                        "alter-user-scram-credentials", "describe-topics",
+                        "describe-cluster"
                     }) +
                     " ..");
                 Environment.ExitCode = 1;
@@ -824,6 +1016,12 @@ public static async Task Main(string[] args)
                 case "alter-user-scram-credentials":
                     await AlterUserScramCredentialsAsync(bootstrapServers, commandArgs);
                     break;
+                case "describe-topics":
+                    await DescribeTopicsAsync(bootstrapServers, commandArgs);
+                    break;
+                case "describe-cluster":
+                    await DescribeClusterAsync(bootstrapServers, commandArgs);
+                    break;
                 default:
                     Console.WriteLine($"unknown command: {command}");
                     break;

src/Confluent.Kafka/Admin/ConsumerGroupDescription.cs

@@ -1,4 +1,4 @@
-// Copyright 2022 Confluent Inc.
+// Copyright 2022-2023 Confluent Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
 // Refer to LICENSE for more information.
 
 using System.Collections.Generic;
+using System.Linq;
+using System.Text;
 
 namespace Confluent.Kafka.Admin
 {
@@ -50,13 +52,51 @@ public class ConsumerGroupDescription
         public ConsumerGroupState State { get; set; }
 
         /// <summary>
-        ///     Consumer group coordinator (broker).
+        ///     Broker that acts as consumer group coordinator (null if not known).
         /// </summary>
         public Node Coordinator { get; set; }
 
         /// <summary>
         ///    Members list.
         /// </summary>
         public List<MemberDescription> Members { get; set; }
+
+        /// <summary>
+        ///    AclOperation list (null if not requested or not supported).
+        /// </summary>
+        public List<AclOperation> AuthorizedOperations { get; set; }
+
+        /// <summary>
+        ///     Returns a JSON representation of this object.
+        /// </summary>
+        /// <returns>
+        ///     A JSON representation of this object.
+        /// </returns>
+        public override string ToString()
+        {
+            var result = new StringBuilder();
+            var members = string.Join(",",
+                Members.Select(member =>
+                    member.ToString()
+                ).ToList());
+            var authorizedOperations = "null";
+            if (AuthorizedOperations != null)
+            {
+                authorizedOperations = string.Join(",",
+                    AuthorizedOperations.Select(authorizedOperation =>
+                        authorizedOperation.ToString().Quote()
+                    ).ToList());
+                authorizedOperations = $"[{authorizedOperations}]";
+            }
+
+            result.Append($"{{\"GroupId\": {GroupId.Quote()}");
+            result.Append($", \"Error\": \"{Error.Code}\", \"IsSimpleConsumerGroup\": {IsSimpleConsumerGroup.Quote()}");
+            result.Append($", \"PartitionAssignor\": {PartitionAssignor.Quote()}, \"State\": {State.ToString().Quote()}");
+            result.Append($", \"Coordinator\": {Coordinator?.ToString() ?? "null"}, \"Members\": [{members}]");
+            result.Append($", \"AuthorizedOperations\": {authorizedOperations}}}");
+
+            return result.ToString();
+        }
+
     }
 }