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.dse.driver.internal.core.insights;
  
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  
  class AddressFormatter {
  
    static String nullSafeToString(Object address) {
      if (address instanceof InetAddress) {
        return nullSafeToString((InetAddress) address);
      } else if (address instanceof InetSocketAddress) {
        return nullSafeToString((InetSocketAddress) address);
      } else if (address instanceof String) {
        return address.toString();
      } else {
        return "";
      }
    }
  
    static String nullSafeToString(InetAddress inetAddress) {
      return inetAddress != null ? inetAddress.getHostAddress() : null;
    }
  
    static String nullSafeToString(InetSocketAddress inetSocketAddress) {
      if (inetSocketAddress != null) {
        if (inetSocketAddress.isUnresolved()) {
          return String.format(
              "%s:%s",
              nullSafeToString(inetSocketAddress.getHostName()), inetSocketAddress.getPort());
        } else {
          return String.format(
              "%s:%s", nullSafeToString(inetSocketAddress.getAddress()), inetSocketAddress.getPort());
        }
      }
      return null;
    }
  }
  