/**
 * 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 org.apache.distributedlog.client.routing;

import com.twitter.finagle.Addr;
import com.twitter.finagle.Address;
import com.twitter.finagle.Addrs;
import com.twitter.finagle.Name;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import scala.runtime.AbstractFunction1;
import scala.runtime.BoxedUnit;

/**
 * A {@link Name} implementation for testing purpose.
 */
public class TestName implements Name {

    private static final Logger LOG = LoggerFactory.getLogger(TestName.class);

    private AbstractFunction1<Addr, BoxedUnit> callback = null;

    public void changes(AbstractFunction1<Addr, BoxedUnit> callback) {
        this.callback = callback;
    }

    public void changeAddrs(List<Address> addresses) {
        if (null != callback) {
            LOG.info("Sending a callback {}", addresses);
            callback.apply(Addrs.newBoundAddr(addresses));
        }
    }
}