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 com.datastax.oss.driver.api.core.metadata.EndPoint;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import java.io.Serializable;
  import java.net.InetSocketAddress;
  import java.util.Objects;
  
  public class DefaultEndPoint implements EndPoint, Serializable {
  
    private static final long serialVersionUID = 1;
  
    private final InetSocketAddress address;
    private final String metricPrefix;
  
    public DefaultEndPoint(InetSocketAddress address) {
      this.address = Objects.requireNonNull(address, "address can't be null");
      this.metricPrefix = buildMetricPrefix(address);
    }
  
    @NonNull
    @Override
    public InetSocketAddress resolve() {
      return address;
    }
  
    @Override
    public boolean equals(Object other) {
      if (other == this) {
        return true;
      } else if (other instanceof DefaultEndPoint) {
        InetSocketAddress thisAddress = this.address;
        InetSocketAddress thatAddress = ((DefaultEndPoint) other).address;
        // If only one of the addresses is unresolved, resolve the other. Otherwise (both resolved or
        // both unresolved), compare as-is.
        if (thisAddress.isUnresolved() && !thatAddress.isUnresolved()) {
          thisAddress = new InetSocketAddress(thisAddress.getHostName(), thisAddress.getPort());
        } else if (thatAddress.isUnresolved() && !thisAddress.isUnresolved()) {
          thatAddress = new InetSocketAddress(thatAddress.getHostName(), thatAddress.getPort());
        }
        return thisAddress.equals(thatAddress);
      } else {
        return false;
      }
    }
  
    @Override
    public int hashCode() {
      return address.hashCode();
    }
  
    @Override
    public String toString() {
      return address.toString();
    }
  
    @NonNull
    @Override
    public String asMetricPrefix() {
      return metricPrefix;
    }
  
    private static String buildMetricPrefix(InetSocketAddress address) {
      String hostString = address.getHostString();
      if (hostString == null) {
        throw new IllegalArgumentException(
            "Could not extract a host string from provided address " + address);
      }
      // Append the port since Cassandra 4 supports nodes with different ports
      return hostString.replace('.', '_') + ':' + address.getPort();
    }
  }
  