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.cassandra.db.virtual;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.ConcurrentMap;
  import java.util.function.Supplier;
  
  import org.awaitility.Awaitility;
  import org.junit.Test;
  
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.cql3.UntypedResultSet;
  import org.apache.cassandra.gms.ApplicationState;
  import org.apache.cassandra.gms.EndpointState;
  import org.apache.cassandra.gms.Gossiper;
  import org.apache.cassandra.locator.InetAddressAndPort;
  
  import static com.google.common.collect.ImmutableList.of;
  import static org.assertj.core.api.Assertions.assertThat;
  
  public class GossipInfoTableTest extends CQLTester
  {
      @Test
      public void testSelectAllWhenGossipInfoIsEmpty() throws Throwable
      {
          // we have not triggered gossiper yet
          VirtualKeyspaceRegistry.instance.register(new VirtualKeyspace("vts_1",
                                                                        of(new GossipInfoTable("vts_1", HashMap::new))));
          assertEmpty(execute("SELECT * FROM vts_1.gossip_info"));
      }
  
      @Test
      public void testSelectAllWithStateTransitions() throws Throwable
      {
          try
          {
              requireNetwork(); // triggers gossiper
  
              ConcurrentMap<InetAddressAndPort, EndpointState> states = Gossiper.instance.endpointStateMap;
              Awaitility.await().until(() -> !states.isEmpty());
              Map.Entry<InetAddressAndPort, EndpointState> entry = states.entrySet().stream().findFirst()
                      .orElseThrow(AssertionError::new);
              InetAddressAndPort endpoint = entry.getKey();
              EndpointState localState = new EndpointState(entry.getValue());
  
              Supplier<Map<InetAddressAndPort, EndpointState>> endpointStateMapSupplier = () -> new HashMap<InetAddressAndPort, EndpointState>() {{put(endpoint, localState);}};
  
              VirtualKeyspaceRegistry.instance.register(new VirtualKeyspace("vts_2",
                                                                            of(new GossipInfoTable("vts_2", endpointStateMapSupplier))));
  
              UntypedResultSet resultSet = execute("SELECT * FROM vts_2.gossip_info");
  
              assertThat(resultSet.size()).isEqualTo(1);
              UntypedResultSet.Row row = resultSet.one();
              assertThat(row.getColumns().size()).isEqualTo(66);
  
              assertThat(endpoint).isNotNull();
              assertThat(localState).isNotNull();
              assertThat(row.getInetAddress("address")).isEqualTo(endpoint.getAddress());
              assertThat(row.getInt("port")).isEqualTo(endpoint.getPort());
              assertThat(row.getString("hostname")).isEqualTo(endpoint.getHostName());
              assertThat(row.getInt("generation")).isEqualTo(localState.getHeartBeatState().getGeneration());
              assertThat(row.getInt("heartbeat")).isNotNull();
  
              assertValue(row, "status", localState, ApplicationState.STATUS);
              assertValue(row, "load", localState, ApplicationState.LOAD);
              assertValue(row, "schema", localState, ApplicationState.SCHEMA);
              assertValue(row, "dc", localState, ApplicationState.DC);
              assertValue(row, "rack", localState, ApplicationState.RACK);
              assertValue(row, "release_version", localState, ApplicationState.RELEASE_VERSION);
              assertValue(row, "removal_coordinator", localState, ApplicationState.REMOVAL_COORDINATOR);
              assertValue(row, "internal_ip", localState, ApplicationState.INTERNAL_IP);
              assertValue(row, "rpc_address", localState, ApplicationState.RPC_ADDRESS);
              assertValue(row, "severity", localState, ApplicationState.SEVERITY);
              assertValue(row, "net_version", localState, ApplicationState.NET_VERSION);
              assertValue(row, "host_id", localState, ApplicationState.HOST_ID);
              assertValue(row, "rpc_ready", localState, ApplicationState.RPC_READY);
              assertValue(row, "internal_address_and_port", localState, ApplicationState.INTERNAL_ADDRESS_AND_PORT);
              assertValue(row, "native_address_and_port", localState, ApplicationState.NATIVE_ADDRESS_AND_PORT);
              assertValue(row, "status_with_port", localState, ApplicationState.STATUS_WITH_PORT);
              assertValue(row, "sstable_versions", localState, ApplicationState.SSTABLE_VERSIONS);
              assertValue(row, "disk_usage", localState, ApplicationState.DISK_USAGE);
              assertValue(row, "x_11_padding", localState, ApplicationState.X_11_PADDING);
              assertValue(row, "x1", localState, ApplicationState.X1);
              assertValue(row, "x2", localState, ApplicationState.X2);
              assertValue(row, "x3", localState, ApplicationState.X3);
              assertValue(row, "x4", localState, ApplicationState.X4);
              assertValue(row, "x5", localState, ApplicationState.X5);
              assertValue(row, "x6", localState, ApplicationState.X6);
              assertValue(row, "x7", localState, ApplicationState.X7);
              assertValue(row, "x8", localState, ApplicationState.X8);
              assertValue(row, "x9", localState, ApplicationState.X9);
              assertValue(row, "x10", localState, ApplicationState.X10);
  
              assertVersion(row, "status_version", localState, ApplicationState.STATUS);
              assertVersion(row, "load_version", localState, ApplicationState.LOAD);
              assertVersion(row, "schema_version", localState, ApplicationState.SCHEMA);
              assertVersion(row, "dc_version", localState, ApplicationState.DC);
              assertVersion(row, "rack_version", localState, ApplicationState.RACK);
              assertVersion(row, "release_version_version", localState, ApplicationState.RELEASE_VERSION);
              assertVersion(row, "removal_coordinator_version", localState, ApplicationState.REMOVAL_COORDINATOR);
              assertVersion(row, "internal_ip_version", localState, ApplicationState.INTERNAL_IP);
              assertVersion(row, "rpc_address_version", localState, ApplicationState.RPC_ADDRESS);
              assertVersion(row, "severity_version", localState, ApplicationState.SEVERITY);
              assertVersion(row, "net_version_version", localState, ApplicationState.NET_VERSION);
              assertVersion(row, "host_id_version", localState, ApplicationState.HOST_ID);
              assertVersion(row, "tokens_version", localState, ApplicationState.TOKENS);
              assertVersion(row, "rpc_ready_version", localState, ApplicationState.RPC_READY);
              assertVersion(row, "internal_address_and_port_version", localState, ApplicationState.INTERNAL_ADDRESS_AND_PORT);
              assertVersion(row, "native_address_and_port_version", localState, ApplicationState.NATIVE_ADDRESS_AND_PORT);
              assertVersion(row, "status_with_port_version", localState, ApplicationState.STATUS_WITH_PORT);
              assertVersion(row, "sstable_versions_version", localState, ApplicationState.SSTABLE_VERSIONS);
              assertVersion(row, "disk_usage_version", localState, ApplicationState.DISK_USAGE);
              assertVersion(row, "x_11_padding", localState, ApplicationState.X_11_PADDING);
              assertVersion(row, "x1", localState, ApplicationState.X1);
              assertVersion(row, "x2", localState, ApplicationState.X2);
              assertVersion(row, "x3", localState, ApplicationState.X3);
              assertVersion(row, "x4", localState, ApplicationState.X4);
              assertVersion(row, "x5", localState, ApplicationState.X5);
              assertVersion(row, "x6", localState, ApplicationState.X6);
              assertVersion(row, "x7", localState, ApplicationState.X7);
              assertVersion(row, "x8", localState, ApplicationState.X8);
              assertVersion(row, "x9", localState, ApplicationState.X9);
              assertVersion(row, "x10", localState, ApplicationState.X10);
          }
          finally
          {
              // clean up the gossip states
              Gossiper.instance.clearUnsafe();
          }
      }
  
      private void assertValue(UntypedResultSet.Row row, String column, EndpointState localState, ApplicationState key)
      {
          if (row.has(column))
          {
              assertThat(localState.getApplicationState(key)).as("'%s' is expected to be not-null", key)
                                                             .isNotNull();
              String tableString = row.getString(column);
              String stateString = localState.getApplicationState(key).value;
              assertThat(tableString).as("'%s' is expected to match column '%s', table string: %s, state string: %s",
                                         key, column, tableString, stateString).isEqualTo(stateString);
          }
          else
          {
              assertThat(localState.getApplicationState(key)).as("'%s' is expected to be null", key)
                                                             .isNull();
          }
      }
  
      private void assertVersion(UntypedResultSet.Row row, String column, EndpointState localState, ApplicationState key)
      {
          if (row.has(column))
          {
              assertThat(localState.getApplicationState(key)).as("'%s' is expected to be not-null", key)
                                                             .isNotNull();
  
              int tableVersion = row.getInt(column);
              int stateVersion = localState.getApplicationState(key).version;
  
              assertThat(tableVersion).as("'%s' is expected to match column '%s', table int: %s, state int: %s",
                                          key, column, tableVersion, stateVersion).isEqualTo(stateVersion);
          }
          else
          {
              assertThat(localState.getApplicationState(key)).as("'%s' is expected to be null", key)
                                                             .isNull();
          }
      }
  }
  