/*
* Licensed 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.facebook.presto.cassandra.util;
import com.datastax.driver.core.Host;
import com.facebook.presto.spi.HostAddress;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class HostAddressFactory
{
private final Map<String, HostAddress> hostMap = new HashMap<>();
public HostAddress toHostAddress(Host host)
{
String hostAddressName = host.getAddress().getHostAddress();
HostAddress address = hostMap.get(hostAddressName);
if (address == null) {
address = HostAddress.fromString(hostAddressName);
hostMap.put(hostAddressName, address);
}
return address;
}
public List<HostAddress> toHostAddressList(Collection<Host> hosts)
{
ArrayList<HostAddress> list = new ArrayList<>(hosts.size());
for (Host host : hosts) {
list.add(toHostAddress(host));
}
return list;
}
}