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.api.testinfra.simulacron;
  
  import com.datastax.oss.driver.api.core.DefaultProtocolVersion;
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  import com.datastax.oss.driver.api.core.metadata.EndPoint;
  import com.datastax.oss.driver.api.testinfra.CassandraResourceRule;
  import com.datastax.oss.driver.internal.core.metadata.DefaultEndPoint;
  import com.datastax.oss.simulacron.common.cluster.ClusterSpec;
  import com.datastax.oss.simulacron.server.BoundCluster;
  import com.datastax.oss.simulacron.server.Inet4Resolver;
  import com.datastax.oss.simulacron.server.Server;
  import java.net.SocketAddress;
  import java.util.Set;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.stream.Collectors;
  
  public class SimulacronRule extends CassandraResourceRule {
    // TODO perhaps share server some other way
    // TODO: Temporarily do not release addresses to ensure IPs are always ordered
    // TODO: Add a way to configure the server for multiple nodes per ip
    public static final Server server =
        Server.builder()
            .withAddressResolver(
                new Inet4Resolver(9043) {
                  @Override
                  public void release(SocketAddress address) {}
                })
            .build();
  
    private final ClusterSpec clusterSpec;
    private BoundCluster boundCluster;
  
    private final AtomicBoolean started = new AtomicBoolean();
  
    public SimulacronRule(ClusterSpec clusterSpec) {
      this.clusterSpec = clusterSpec;
    }
  
    public SimulacronRule(ClusterSpec.Builder clusterSpec) {
      this(clusterSpec.build());
    }
  
    /**
     * Convenient fluent name for getting at bound cluster.
     *
     * @return default bound cluster for this simulacron instance.
     */
    public BoundCluster cluster() {
      return boundCluster;
    }
  
    public BoundCluster getBoundCluster() {
      return boundCluster;
    }
  
    @Override
    protected void before() {
      // prevent duplicate initialization of rule
      if (started.compareAndSet(false, true)) {
        boundCluster = server.register(clusterSpec);
      }
    }
  
    @Override
    protected void after() {
      boundCluster.close();
    }
  
    /** @return All nodes in first data center. */
    @Override
    public Set<EndPoint> getContactPoints() {
      return boundCluster.dc(0).getNodes().stream()
          .map(node -> new DefaultEndPoint(node.inetSocketAddress()))
          .collect(Collectors.toSet());
    }
  
    @Override
    public ProtocolVersion getHighestProtocolVersion() {
      return DefaultProtocolVersion.V4;
    }
  }
  