content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.kafka.tools;
  
  import org.apache.kafka.clients.admin.Admin;
  import org.apache.kafka.clients.admin.MockAdminClient;
  import org.apache.kafka.common.test.ClusterInstance;
  import org.apache.kafka.common.test.api.ClusterTest;
  import org.apache.kafka.common.test.api.Type;
  
  import org.junit.jupiter.api.Test;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.util.Arrays;
  import java.util.List;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class ClusterToolTest {
  
      @ClusterTest
      public void testClusterId(ClusterInstance clusterInstance) {
          String output = ToolsTestUtils.captureStandardOut(() ->
                  assertDoesNotThrow(() -> ClusterTool.execute("cluster-id", "--bootstrap-server", clusterInstance.bootstrapServers())));
          assertTrue(output.contains("Cluster ID: " + clusterInstance.clusterId()));
      }
  
      @ClusterTest(brokers = 3)
      public void testUnregister(ClusterInstance clusterInstance) {
          int brokerId;
          Set<Integer> brokerIds = clusterInstance.brokerIds();
          brokerIds.removeAll(clusterInstance.controllerIds());
          brokerId = assertDoesNotThrow(() -> brokerIds.stream().findFirst().get());
          clusterInstance.shutdownBroker(brokerId);
          String output = ToolsTestUtils.captureStandardOut(() ->
                  assertDoesNotThrow(() -> ClusterTool.execute("unregister", "--bootstrap-server", clusterInstance.bootstrapServers(), "--id", String.valueOf(brokerId))));
  
          assertTrue(output.contains("Broker " + brokerId + " is no longer registered."));
      }
  
      @ClusterTest(brokers = 1, types = {Type.KRAFT, Type.CO_KRAFT})
      public void testListEndpointsWithBootstrapServer(ClusterInstance clusterInstance) {
          String output = ToolsTestUtils.captureStandardOut(() ->
                  assertDoesNotThrow(() -> ClusterTool.execute("list-endpoints", "--bootstrap-server", clusterInstance.bootstrapServers())));
          String port = clusterInstance.bootstrapServers().split(":")[1];
          int id = clusterInstance.brokerIds().iterator().next();
          String format = "%-10s %-9s %-10s %-10s %-10s %-15s%n%-10s %-9s %-10s %-10s %-10s %-6s";
          String expected = String.format(format, "ID", "HOST", "PORT", "RACK", "STATE", "ENDPOINT_TYPE", id, "localhost", port, "null", "unfenced", "broker");
          assertEquals(expected, output);
      }
  
      @ClusterTest(brokers = 2, types = {Type.KRAFT, Type.CO_KRAFT})
      public void testListEndpointsArgumentWithBootstrapServer(ClusterInstance clusterInstance) {
          List<Integer> brokerIds = clusterInstance.brokerIds().stream().collect(Collectors.toList());
          clusterInstance.shutdownBroker(brokerIds.get(0));
  
          List<String> ports = Arrays.stream(clusterInstance.bootstrapServers().split(",")).map(b ->  b.split(":")[1]).collect(Collectors.toList());
          String format = "%-10s %-9s %-10s %-10s %-10s %-15s%n%-10s %-9s %-10s %-10s %-10s %-15s%n%-10s %-9s %-10s %-10s %-10s %-6s";
          String expected = String.format(format,
                  "ID", "HOST", "PORT", "RACK", "STATE", "ENDPOINT_TYPE",
                  brokerIds.get(0), "localhost", ports.get(0), "null", "fenced", "broker",
                  brokerIds.get(1), "localhost", ports.get(1), "null", "unfenced", "broker");
  
          String output = ToolsTestUtils.captureStandardOut(() -> assertDoesNotThrow(() -> ClusterTool.execute("list-endpoints", "--bootstrap-server", clusterInstance.bootstrapServers(), "--include-fenced-brokers")));
  
          assertEquals(expected, output);
      }
  
      @ClusterTest(types = {Type.KRAFT, Type.CO_KRAFT})
      public void testClusterIdWithBootstrapController(ClusterInstance clusterInstance) {
          String output = ToolsTestUtils.captureStandardOut(() ->
                  assertDoesNotThrow(() -> ClusterTool.execute("cluster-id", "--bootstrap-controller", clusterInstance.bootstrapControllers())));
          assertTrue(output.contains("Cluster ID: " + clusterInstance.clusterId()));
      }
  
      @ClusterTest(brokers = 3, types = {Type.KRAFT, Type.CO_KRAFT})
      public void testUnregisterWithBootstrapController(ClusterInstance clusterInstance) {
          Set<Integer> brokerIds = clusterInstance.brokerIds();
          brokerIds.removeAll(clusterInstance.controllerIds());
          int brokerId = assertDoesNotThrow(() -> brokerIds.stream().findFirst().get());
          clusterInstance.shutdownBroker(brokerId);
          assertDoesNotThrow(() -> ClusterTool.execute("unregister", "--bootstrap-controller", clusterInstance.bootstrapControllers(), "--id", String.valueOf(brokerId)));
      }
  
      @ClusterTest(brokers = 3, types = {Type.KRAFT, Type.CO_KRAFT})
      public void testListEndpointsWithBootstrapController(ClusterInstance clusterInstance) {
          String output = ToolsTestUtils.captureStandardOut(() ->
                  assertDoesNotThrow(() -> ClusterTool.execute("list-endpoints", "--bootstrap-controller", clusterInstance.bootstrapControllers())));
          String port = clusterInstance.bootstrapControllers().split(":")[1];
          int id = clusterInstance.controllerIds().iterator().next();
          String format = "%-10s %-9s %-10s %-10s %-15s%n%-10s %-9s %-10s %-10s %-10s";
          String expected = String.format(format, "ID", "HOST", "PORT", "RACK", "ENDPOINT_TYPE", id, "localhost", port, "null", "controller");
          assertTrue(output.equals(expected));
      }
  
      @ClusterTest(brokers = 3, types = {Type.KRAFT, Type.CO_KRAFT})
      public void testListEndpointsArgumentWithBootstrapController(ClusterInstance clusterInstance) {
          RuntimeException exception =
                  assertThrows(RuntimeException.class,
                          () -> ClusterTool.execute("list-endpoints", "--bootstrap-controller", clusterInstance.bootstrapControllers(), "--include-fenced-brokers"));
          assertEquals("The option --include-fenced-brokers is only supported with --bootstrap-server option", exception.getMessage());
      }
  
      @Test
      public void testPrintClusterId() throws Exception {
          Admin adminClient = new MockAdminClient.Builder().
                  clusterId("QtNwvtfVQ3GEFpzOmDEE-w").
                  build();
          ByteArrayOutputStream stream = new ByteArrayOutputStream();
          ClusterTool.clusterIdCommand(new PrintStream(stream), adminClient);
          assertEquals("Cluster ID: QtNwvtfVQ3GEFpzOmDEE-w\n", stream.toString());
      }
  
      @Test
      public void testClusterTooOldToHaveId() throws Exception {
          Admin adminClient = new MockAdminClient.Builder().
                  clusterId(null).
                  build();
          ByteArrayOutputStream stream = new ByteArrayOutputStream();
          ClusterTool.clusterIdCommand(new PrintStream(stream), adminClient);
          assertEquals("No cluster ID found. The Kafka version is probably too old.\n", stream.toString());
      }
  
      @Test
      public void testUnregisterBroker() throws Exception {
          Admin adminClient = new MockAdminClient.Builder().numBrokers(3).
                  usingRaftController(true).
                  build();
          ByteArrayOutputStream stream = new ByteArrayOutputStream();
          ClusterTool.unregisterCommand(new PrintStream(stream), adminClient, 0);
          assertEquals("Broker 0 is no longer registered.\n", stream.toString());
      }
  
      @Test
      public void testLegacyModeClusterCannotUnregisterBroker() throws Exception {
          Admin adminClient = new MockAdminClient.Builder().numBrokers(3).
                  usingRaftController(false).
                  build();
          ByteArrayOutputStream stream = new ByteArrayOutputStream();
          ClusterTool.unregisterCommand(new PrintStream(stream), adminClient, 0);
          assertEquals("The target cluster does not support the broker unregistration API.\n", stream.toString());
      }
  }
  