AbstractAddressResolver.java — netty Source File

Source Code

/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.resolver;

import io.netty.util.concurrent.EventExecutor;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.Promise;
import io.netty.util.internal.TypeParameterMatcher;

import java.net.SocketAddress;
import java.nio.channels.UnsupportedAddressTypeException;
import java.util.Collections;
import java.util.List;

import static io.netty.util.internal.ObjectUtil.checkNotNull;

/**
 * A skeletal {@link AddressResolver} implementation.
 */
public abstract class AbstractAddressResolver<T extends SocketAddress> implements AddressResolver<T> {

    private final EventExecutor executor;
    private final TypeParameterMatcher matcher;

    /**
     * @param executor the {@link EventExecutor} which is used to notify the listeners of the {@link Future} returned
     *                 by {@link #resolve(SocketAddress)}
     */
    protected AbstractAddressResolver(EventExecutor executor) {
        this.executor = checkNotNull(executor, "executor");
        this.matcher = TypeParameterMatcher.find(this, AbstractAddressResolver.class, "T");
    }

    /**
     * @param executor the {@link EventExecutor} which is used to notify the listeners of the {@link Future} returned
     *                 by {@link #resolve(SocketAddress)}
     * @param addressType the type of the {@link SocketAddress} supported by this resolver
     */
    protected AbstractAddressResolver(EventExecutor executor, Class<? extends T> addressType) {
        this.executor = checkNotNull(executor, "executor");
        this.matcher = TypeParameterMatcher.get(addressType);
    }

    /**
     * Returns the {@link EventExecutor} which is used to notify the listeners of the {@link Future} returned
     * by {@link #resolve(SocketAddress)}.
// ... (147 more lines)