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A driver for DataStax Enterprise (DSE) and Apache Cassandra 1.2+ clusters that works exclusively with the Cassandra Query Language version 3 (CQL3) and Cassandra's binary protocol, supporting DSE-specific features such as geospatial types, DSE Graph and DSE authentication.

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/*
 * Copyright DataStax, Inc.
 *
 * This software can be used solely with DataStax Enterprise. Please consult the license at
 * http://www.datastax.com/terms/datastax-dse-driver-license-terms
 */
package com.datastax.driver.dse.graph;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.google.common.net.InetAddresses;
import java.io.IOException;
import java.net.InetAddress;

/**
 * Default deserializer used by the driver for {@link InetAddress} instances. The actual subclass
 * returned by this deserializer depends on the type of address: {@link java.net.Inet4Address IPV4}
 * or {@link java.net.Inet6Address IPV6}.
 */
class DefaultInetAddressDeserializer extends StdDeserializer {

  private final Class inetClass;

  DefaultInetAddressDeserializer(Class inetClass) {
    super(inetClass);
    this.inetClass = inetClass;
  }

  @Override
  public T deserialize(JsonParser parser, DeserializationContext ctx) throws IOException {
    String ip = parser.readValueAs(String.class);
    try {
      InetAddress inet = InetAddresses.forString(ip);
      return inetClass.cast(inet);
    } catch (ClassCastException e) {
      throw new JsonParseException(
          parser,
          String.format("Inet address cannot be cast to %s: %s", inetClass.getSimpleName(), ip),
          e);
    } catch (IllegalArgumentException e) {
      throw new JsonParseException(parser, String.format("Expected inet address, got %s", ip), e);
    }
  }
}