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 com.datastax.oss.driver.internal.core.metadata;
  
  import static com.datastax.oss.driver.Assertions.assertThat;
  import static org.mockito.Mockito.when;
  
  import com.datastax.oss.driver.api.core.metadata.EndPoint;
  import com.datastax.oss.driver.api.core.uuid.Uuids;
  import com.datastax.oss.driver.internal.core.channel.ChannelFactory;
  import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
  import com.datastax.oss.driver.internal.core.metrics.MetricsFactory;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableMap;
  import java.util.Collections;
  import java.util.UUID;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.Mock;
  import org.mockito.junit.MockitoJUnitRunner;
  
  @RunWith(MockitoJUnitRunner.class)
  public class FullNodeListRefreshTest {
  
    @Mock private InternalDriverContext context;
    @Mock protected MetricsFactory metricsFactory;
    @Mock private ChannelFactory channelFactory;
  
    private DefaultNode node1;
    private DefaultNode node2;
    private EndPoint endPoint3;
    private UUID hostId3;
  
    @Before
    public void setup() {
      when(context.getMetricsFactory()).thenReturn(metricsFactory);
      when(context.getChannelFactory()).thenReturn(channelFactory);
  
      node1 = TestNodeFactory.newNode(1, context);
      node2 = TestNodeFactory.newNode(2, context);
  
      endPoint3 = TestNodeFactory.newEndPoint(3);
      hostId3 = UUID.randomUUID();
    }
  
    @Test
    public void should_add_and_remove_nodes() {
      // Given
      DefaultMetadata oldMetadata =
          new DefaultMetadata(
              ImmutableMap.of(node1.getHostId(), node1, node2.getHostId(), node2),
              Collections.emptyMap(),
              null,
              null);
      Iterable<NodeInfo> newInfos =
          ImmutableList.of(
              DefaultNodeInfo.builder()
                  .withEndPoint(node2.getEndPoint())
                  .withHostId(node2.getHostId())
                  .build(),
              DefaultNodeInfo.builder().withEndPoint(endPoint3).withHostId(hostId3).build());
      FullNodeListRefresh refresh = new FullNodeListRefresh(newInfos);
  
      // When
      MetadataRefresh.Result result = refresh.compute(oldMetadata, false, context);
  
      // Then
      assertThat(result.newMetadata.getNodes()).containsOnlyKeys(node2.getHostId(), hostId3);
      DefaultNode node3 = (DefaultNode) result.newMetadata.getNodes().get(hostId3);
      assertThat(result.events)
          .containsOnly(NodeStateEvent.removed(node1), NodeStateEvent.added(node3));
    }
  
    @Test
    public void should_update_existing_nodes() {
      // Given
      DefaultMetadata oldMetadata =
          new DefaultMetadata(
              ImmutableMap.of(node1.getHostId(), node1, node2.getHostId(), node2),
              Collections.emptyMap(),
              null,
              null);
  
      UUID schemaVersion1 = Uuids.random();
      UUID schemaVersion2 = Uuids.random();
      Iterable<NodeInfo> newInfos =
          ImmutableList.of(
              DefaultNodeInfo.builder()
                  .withEndPoint(node1.getEndPoint())
                  .withDatacenter("dc1")
                  .withRack("rack1")
                  .withHostId(node1.getHostId())
                  .withSchemaVersion(schemaVersion1)
                  .build(),
              DefaultNodeInfo.builder()
                  .withEndPoint(node2.getEndPoint())
                  .withDatacenter("dc1")
                  .withRack("rack2")
                  .withHostId(node2.getHostId())
                  .withSchemaVersion(schemaVersion2)
                  .build());
      FullNodeListRefresh refresh = new FullNodeListRefresh(newInfos);
  
      // When
      MetadataRefresh.Result result = refresh.compute(oldMetadata, false, context);
  
      // Then
      assertThat(result.newMetadata.getNodes())
          .containsOnlyKeys(node1.getHostId(), node2.getHostId());
      assertThat(node1.getDatacenter()).isEqualTo("dc1");
      assertThat(node1.getRack()).isEqualTo("rack1");
      assertThat(node1.getSchemaVersion()).isEqualTo(schemaVersion1);
      assertThat(node2.getDatacenter()).isEqualTo("dc1");
      assertThat(node2.getRack()).isEqualTo("rack2");
      assertThat(node2.getSchemaVersion()).isEqualTo(schemaVersion2);
      assertThat(result.events).isEmpty();
    }
  
    @Test
    public void should_ignore_duplicate_host_ids() {
      // Given
      DefaultMetadata oldMetadata =
          new DefaultMetadata(
              ImmutableMap.of(node1.getHostId(), node1, node2.getHostId(), node2),
              Collections.emptyMap(),
              null,
              null);
  
      Iterable<NodeInfo> newInfos =
          ImmutableList.of(
              DefaultNodeInfo.builder()
                  .withEndPoint(node1.getEndPoint())
                  .withDatacenter("dc1")
                  .withRack("rack1")
                  .withHostId(node1.getHostId())
                  .build(),
              DefaultNodeInfo.builder()
                  .withEndPoint(node2.getEndPoint())
                  .withDatacenter("dc1")
                  .withRack("rack2")
                  .withHostId(node2.getHostId())
                  .build(),
              // Duplicate host id for node 2, should be ignored:
              DefaultNodeInfo.builder()
                  .withEndPoint(node2.getEndPoint())
                  .withDatacenter("dc1")
                  .withRack("rack3")
                  .withHostId(node2.getHostId())
                  .build());
      FullNodeListRefresh refresh = new FullNodeListRefresh(newInfos);
  
      // When
      MetadataRefresh.Result result = refresh.compute(oldMetadata, false, context);
  
      // Then
      assertThat(result.newMetadata.getNodes())
          .containsOnlyKeys(node1.getHostId(), node2.getHostId());
      assertThat(node1.getDatacenter()).isEqualTo("dc1");
      assertThat(node1.getRack()).isEqualTo("rack1");
      assertThat(node2.getDatacenter()).isEqualTo("dc1");
      assertThat(node2.getRack()).isEqualTo("rack2");
      assertThat(result.events).isEmpty();
    }
  }
  