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/*
 * 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.flink.runtime.util;

import org.apache.flink.runtime.akka.AkkaUtils;
import org.apache.flink.util.FlinkException;

import akka.actor.Address;

import java.net.MalformedURLException;
import java.util.UUID;

/**
 * Wrapper class for a pair of connection address and leader session ID.
 */
public class LeaderConnectionInfo {

	private final String address;

	private final UUID leaderSessionID;

	private final String hostname;

	private final int port;

	public LeaderConnectionInfo(String address, UUID leaderSessionID) throws FlinkException {
		this.address = address;
		this.leaderSessionID = leaderSessionID;

		final Address akkaAddress;
		// this only works as long as the address is Akka based
		try {
			akkaAddress = AkkaUtils.getAddressFromAkkaURL(address);
		} catch (MalformedURLException e) {
			throw new FlinkException("Could not extract the hostname from the given address \'" +
				address + "\'.", e);
		}

		if (akkaAddress.host().isDefined()) {
			hostname = akkaAddress.host().get();
		} else {
			hostname = "localhost";
		}

		if (akkaAddress.port().isDefined()) {
			port = (int) akkaAddress.port().get();
		} else {
			port = -1;
		}
	}

	public String getAddress() {
		return address;
	}

	public UUID getLeaderSessionID() {
		return leaderSessionID;
	}

	public String getHostname() {
		return hostname;
	}

	public int getPort() {
		return port;
	}

	@Override
	public String toString() {
		return "LeaderConnectionInfo{" +
			"address='" + address + '\'' +
			", leaderSessionID=" + leaderSessionID +
			'}';
	}
}