/*
* Copyright (c) 2011-2013 The original author or authors
* ------------------------------------------------------
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package io.vertx.core.spi.resolver;
import io.netty.resolver.AddressResolverGroup;
import io.vertx.core.Handler;
import io.vertx.core.Vertx;
import io.vertx.core.VertxException;
import io.vertx.core.dns.AddressResolverOptions;
import io.vertx.core.impl.VertxImpl;
import io.vertx.core.impl.resolver.DnsResolverProvider;
import io.vertx.core.impl.resolver.DefaultResolverProvider;
import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;
import java.net.InetSocketAddress;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
*/
public interface ResolverProvider {
String DISABLE_DNS_RESOLVER_PROP_NAME = "vertx.disableDnsResolver";
boolean DISABLE_DNS_RESOLVER = Boolean.getBoolean(DISABLE_DNS_RESOLVER_PROP_NAME);
static ResolverProvider factory(Vertx vertx, AddressResolverOptions options) {
// For now not really plugable, we just want to not fail when we can't load the async provider
// that use an unstable API and fallback on the default (blocking) provider
try {
if (!DISABLE_DNS_RESOLVER) {
return new DnsResolverProvider((VertxImpl) vertx, options);
}
} catch (Throwable e) {
if (e instanceof VertxException) {
throw e;
}
Logger logger = LoggerFactory.getLogger(ResolverProvider.class);
logger.info("Using the default address resolver as the dns resolver could not be loaded");
}
return new DefaultResolverProvider();
}
AddressResolverGroup<InetSocketAddress> resolver(AddressResolverOptions options);
void close(Handler<Void> doneHandler);
}