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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2018 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:
 *
 *   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 io.netty.resolver.dns;

import static io.netty.resolver.dns.DnsAddressDecoder.decodeAddress;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;

import io.netty.channel.EventLoop;
import io.netty.handler.codec.dns.DnsRecord;
import io.netty.handler.codec.dns.DnsRecordType;
import io.netty.util.concurrent.Promise;

final class DnsAddressResolveContext extends DnsResolveContext {

    private final DnsCache resolveCache;
    private final AuthoritativeDnsServerCache authoritativeDnsServerCache;

    DnsAddressResolveContext(DnsNameResolver parent, String hostname, DnsRecord[] additionals,
                             DnsServerAddressStream nameServerAddrs, DnsCache resolveCache,
                             AuthoritativeDnsServerCache authoritativeDnsServerCache) {
        super(parent, hostname, DnsRecord.CLASS_IN, parent.resolveRecordTypes(), additionals, nameServerAddrs);
        this.resolveCache = resolveCache;
        this.authoritativeDnsServerCache = authoritativeDnsServerCache;
    }

    @Override
    DnsResolveContext newResolverContext(DnsNameResolver parent, String hostname,
                                                      int dnsClass, DnsRecordType[] expectedTypes,
                                                      DnsRecord[] additionals,
                                                      DnsServerAddressStream nameServerAddrs) {
        return new DnsAddressResolveContext(parent, hostname, additionals, nameServerAddrs, resolveCache,
                authoritativeDnsServerCache);
    }

    @Override
    InetAddress convertRecord(DnsRecord record, String hostname, DnsRecord[] additionals, EventLoop eventLoop) {
        return decodeAddress(record, hostname, parent.isDecodeIdn());
    }

    @Override
    List filterResults(List unfiltered) {
        final Class inetAddressType = parent.preferredAddressType().addressType();
        final int size = unfiltered.size();
        int numExpected = 0;
        for (int i = 0; i < size; i++) {
            InetAddress address = unfiltered.get(i);
            if (inetAddressType.isInstance(address)) {
                numExpected++;
            }
        }
        if (numExpected == size || numExpected == 0) {
            // If all the results are the preferred type, or none of them are, then we don't need to do any filtering.
            return unfiltered;
        }
        List filtered = new ArrayList(numExpected);
        for (int i = 0; i < size; i++) {
            InetAddress address = unfiltered.get(i);
            if (inetAddressType.isInstance(address)) {
                filtered.add(address);
            }
        }
        return filtered;
    }

    @Override
    void cache(String hostname, DnsRecord[] additionals,
               DnsRecord result, InetAddress convertedResult) {
        resolveCache.cache(hostname, additionals, convertedResult, result.timeToLive(), parent.ch.eventLoop());
    }

    @Override
    void cache(String hostname, DnsRecord[] additionals, UnknownHostException cause) {
        resolveCache.cache(hostname, additionals, cause, parent.ch.eventLoop());
    }

    @Override
    void doSearchDomainQuery(String hostname, Promise> nextPromise) {
        // Query the cache for the hostname first and only do a query if we could not find it in the cache.
        if (!DnsNameResolver.doResolveAllCached(
                hostname, additionals, nextPromise, resolveCache, parent.resolvedInternetProtocolFamiliesUnsafe())) {
            super.doSearchDomainQuery(hostname, nextPromise);
        }
    }

    @Override
    DnsCache resolveCache() {
        return resolveCache;
    }

    @Override
    AuthoritativeDnsServerCache authoritativeDnsServerCache() {
        return authoritativeDnsServerCache;
    }
}