protonj2-client/src/main/java/org/apache/qpid/protonj2/client/ReconnectLocation.java

/*
 * 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.qpid.protonj2.client;

import java.util.Objects;

/**
 * Represents a reconnection host used to track location and configuration
 * for individual remote hosts that can be used to re-establish a connection
 * on loss of connectivity.
 */
public class ReconnectLocation {

    private final String host;
    private final int port;

    /**
     * Creates a new {@link ReconnectLocation} instance with the fixed host and port values.
     *
     * @param host
     * 		The remote host where the connection will be made
     * @param port
     *      The port on the remote where the connection attempt will be made.
     */
    public ReconnectLocation(String host, int port) {
        Objects.requireNonNull(host, "Cannot create a reconnect entry with a null host value");

        if (host.isBlank()) {
            throw new IllegalArgumentException("Cannot create a reconnect entry with a blank host value");
        }

        this.host = host;
        this.port = port;
    }

    /**
     * @return the host where the reconnect should attempt its reconnection.
     */
    public String getHost() {
        return host;
    }

    /**
     * @return the port where the reconnect should attempt its connection.
     */
    public int getPort() {
        return port;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((host == null) ? 0 : host.hashCode());
        result = prime * result + port;
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj == null) {
            return false;
        }

        if (!(obj instanceof ReconnectLocation)) {
            return false;
        }

        ReconnectLocation other = (ReconnectLocation) obj;
        if (host == null) {
            if (other.host != null) {
                return false;
            }
        } else if (!host.equalsIgnoreCase(other.host)) {
            return false;
        }

        if (port != other.port) {
            return false;
        }

        return true;
    }
}